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BLD2024-00855 Shop, ADU - BLD Engineering / Geo-tech Reports - 6/20/2024
I d 2c�2�1 -c,10� Randall Thompson, P.E. THOMPBON Phone: 509.987- 1699 6 N O I N@ 8 R I N G email:Irthompsonengin Bari ngOyahoo.cam 541 Jordan Ln • Richland, WA 99352 STRUCTURAL CALCULATIONS KILLMAN SHOP/ADU BLDG FOR WILLIAMS ARCHITECTURE PROJECT #24-089 SITE LOCATED AT COPY LOT #20 CLEAR LAKE DR SHELTON, WA 98584 THESE PLANS MUST BE ON THE JOB SITE FOR INSPECTION BY RANDALL N. THOMPSON, P.E. Ire, REVIEWED FOR CODE COMPLIANCE MASON COUNTY BUILDING DEPARTMENT 5l29l24, 10:40 AM ATC Hazards by Location J ���0�9 A This is a beta release of the new ATC Hazards by Location website,Please contact us with feedback. V, d The ATC Hazards by Location website will not be updated to support ASCE 7-22.}Ind QU why, 1 —" OTCHazards by Location Searbh Information Address: W Clew Lake Dr,Washington 98584,USA 363 ft - �- Coordinates: 47.2638714,-123.1561158 Elevation: 363 ft - tow TI mestamp: 2024-06-29T17:40:01.127Z Hazard Type: Seismic Reference Document: ASCE7-16 Map date 02024 Googls Risk Category, I Site Class; D-default Basic Parameters Name Value Description Sa 1.549 MCER ground motion(period=0,2s) S1 0.587 MCER ground motion(period=1.0s) SMS 1.859 Site-modified spectral acceleration value SMt 'null Site-modified spectral acceleration value SDs 1.239 Numeric seismic design value at 0.2s SA SW •null Numeric seismic design value at 1.Os SA `See Section 11.4.8 Additional Information Name Value Description SDC •null Seismic design category Fa 1.2 Site amplification factor at 0.2s Fv •null Site amplification factor at 1.0s CRS 0.903 Coefflclent of risk(0.2s) CRt 0.881 Coefficient of risk(1.Os) PGA 0.67 MCEG peak ground acceleration FpGA 1.2 Site amplification factor at PGA PGAM 0.804 Site modified peak ground acceleration TL 16 Long-period transition period is) SsRT 1.549 Probabilistic risk-targeted ground motion(0.2s) SsUH 1,715 Factored uniform-hazard spectral acceleration(2%probability of excaadancs in 50 years) Sal) 1.599 Factored deterministic acceleration value(0.2s) S1RT 0.587 Probabilistic rlsk-targeted ground motion(1.0s) S1UH 0.667 Factored uniform-hazard spectral acceleration(2%probability of exceedance In 50 years) S1D 0.858 Factored deterministic acceleration value(1.0s) PGAd 0.753 Factored deterministic acceleration value(PGA) *See Section 11.4.8 The results Indicated here DO NOT reflect any state or local amendments to the values or any delineation lines made during ilia building code adoption process.Users should confirm any output obtained from this tool with the local Authority Having Jurisdiction before proceeding with design. https:Hhazards.atcouncli,org!#/selsmic?lat=47.2638714&ing=-123.1561158&address=W Clear Lake Dr%2C Washington 98584%2C USA 1/2 Y*,0eA 41?-� SCOPE OF WORK: Provide vertical & lateral design (per 2021 I.B.C.) for new shop/garage/ADU per client's request. PROJECT DESCRIPTION: Single story wood framed shop/garage/ADU. DESIGN PARAMETERS:. GRAVITY LOADS: Roofs: Trusses &comp = 15 psf dead 25 psf snow 40 psf total Walls: Conventional = 10 psf dead SITE SOILS DATA: Assumed allowable soil bearing pressure= 1500 psf LATERAL LOADS: Wind: Basic wind speed= 110 MPH V-asd= 85 MPH Exposure category"B" Seismic: Design category"D" Resonant response factor R= 6.5 Ss= 1.549g S1 =0.587g Sds= 1.239g Shc =null MEN ■■.� ■■EMMIN ■■ ■ ■ ■■■■ SIVER3 M SINRES72" 0 ■■■ �;7m■■■■ ■■■ MENNEN 0 SMONNNIMME MEMO ■■NNE■■"E", '1!=iri■■■ EMENOMMEMEMME No NNE no ■EME■EM■■SEEM ■■ ■■ N !M■■NE■ ■■■NE■EM ■ ■ ■ .�_r...�.�..."'N MENNE■ ■ w ■ ■ ■�■im C! ■MGmm M: ■ 0M . ■■EMIMMEN ■■MOM■■■E■ ■ EMM■■MULN M0Nir7Z"'E3 mmum MBE©MENE NNEENMNE■■E EME NMI■■ MN■EM■M 00 mZRIME ■■■■M■ ■■ ■■SEE■E■ME■ ME S000 ■ME■■■ ■EMEMM■M■■■Ems MEN EMEMO N■ M■MM■MMN■EMENORMEM '�. 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E N O I N E E A I !V 0 Sheet: Page � of 5HEARWALL D 51GN CHAR1 WALL STORY SHEAR AVAILA13LE TOTAL SHEAR S.W. ANCHOR BOLTS UPLIFT S.W. DEAD NET TOTAL HOLDOWN OPTIONS LINE LEVEL FORCE SHEAKWA L (S.W.) 15(.W. (0f) TYr E (n) /dia. (5) (ib5) SECTION LOAD UPLIFT UPLIFT ni> i ai� 1 1 4 � � 7 i U9 V715 ���/gym, , 44 IC.- 11101 f . 1 Job: IA _ T HOMPSON Date: By: 2 E N G I N E E R I N O Sheet: Page o 1 r / { ti zPal I \ -Jai, I I - 01I 0. I � I ICI I { I Af Z ak, I � I I I I I I • i (49 Fl - I I I ' 4 I T - . 1 1 I Y Job: 0 c, L,�, ' Pr 0 THOMPSON Date: �. By: 12 N 19 I N 6 E R I N 0 r; Sheet: Page. ` j- IQ9 i 1� 4 t-' Ild {tor PUF:', 5.0 4r ". ✓ 1A IS I Vent Calculations New Residence for Jack and Alisha Killman July 11 , 2024 Project No. 2023028 4 97 REGISTGED 1 STATE OF WASHIN Prepared by: Williams Architecture Reviewed by: Len Williams, AIA Ventilation Calculation Sheet Williams Architecture Page 1 Project: KILLMAN NEW RESIDENCE Project No.: 2023028 Date: 12/24/2019 Analyst: INS Condition: ATTIC - RESIDENCE Crawl Space Ventilation Based on 1 S.F. of vent per 150 S.F. of Crawl Space - IRC 408.2 Area of crawl space: square feet Square feet of vent required: square feet Number of 16"x8" screened vents required: vents at 1/2 square foot per vent Crawl Space Ventilation Based on 1 S.F. of vent per 1,500 S.F. of Crawl Space - IRC 408.2 Area of vent req'd with Class 1 vapor retarder: square feet Number of 16"x8" vents required: [1 required near each corner] [Radon vent Req'd] vents at 1/2 square foot per vent Crawl Space Mechanically Ventilated Based on 1 Cubic S.F. of vent per 50 S.F. of Crawl Space - IRC 408.3.2.2.1 Area of vent req with ass 1 vapor retarder: [Radon Vent Req'd.] cubic feet cont. exhausted Rafter Space Based on 1 S.F. of vent per 300 S.F. of Enclosed Rafter Space - IRC 806.2 Length of rafter in feet: 16 feet Spacing of rafters in inches: 24 inches Total vent area required 14.4 square inches of free air "Cor-A-Vent" continuous ridge vent provides:2 13.5 square inches free air per lineal foot. (V-300) The ridge vent can supply3 50% (7.2) square inches free air The remaining 50% to be provided by the vent block @ bottom Ventilation required at bottom: 7.2 square inches free air per oc Attic Based on 1 S.F. of vent per 300 S.F. of Enclosed Rafter Space - IRC 806.2 Area of attic: 1047 square feet Number of vent block spaces available @ bottom: 16 spaces Length of ridge available for continuous vent: 29 lineal feet Total vent area required 502.6 square inches of free air "Cor-A-Vent" continuous ridge vent provides:2 13.5 1 square inches free air per lineal foot. (V-300) The ridge vent can supply 50% (251.3) square inches free air The remaining 50% 251.3)to be provided by the vent blocks @ bottom Free air required per vent block (16 blocks): 15.7 square inches free air Footnotes: 1.WSA =Washington State Amendment to the IRC. 2. Cor-A-Vent V-300 rated at 13.5 sq. in. of free air/lineal foot; V-600 rated at 20.0 sq. in. of free air/lineal foot . If using V-600, note on drawings. 3. 40-50% of the required ventailation is allowed at the top with the remaining provided at the bottom. Project Notes: Ventilation Calculation Sheet Williams Architecture Page 1 Project: KILLMAN NEW RESIDENCE Project No.: 2023028 Date: 12/24/2019 Analyst: INS Condition: ATTIC - SHOP AND COVERED PORCH Crawl Space Ventilation Based on 1 S.F. of vent per 150 S.F. of Crawl Space - IRC 408.2 Area of crawl space: square feet Square feet of vent required: square feet Number of 16"x8" screened vents required: vents at 1/2 square foot per vent Crawl Space Ventilation Based on 1 S.F. of vent per 1,500 S.F. of Crawl Space - IRC 408.2 Area of vent req'd with Class 1 vapor retarder: square feet Number of 16"x8" vents required: [1 required near each corner] [Radon vent Req'd] vents at 1/2 square foot per vent Crawl Space Mechanically Ventilated Based on 1 Cubic S.F. of vent per 50 S.F. of Crawl Space - IRC 408.3.2.2.1 Area of vent req with ass 1 vapor retarder: [Radon Vent Req'd.] I cubic feet Cont. exhausted Rafter Space Based on 1 S.F. of vent per 300 S.F. of Enclosed Rafter Space - IRC 806.2 Length of rafter in feet: 16 feet Spacing of rafters in inches: 24 inches Total vent area required 14.4 square inches of free air "Cor-A-Vent" continuous ridge vent provides:2 13.5 square inches free air per lineal foot. (V-300 The ridge vent can supply' 50% (7.2) square inches free air The remaining 50% to be provided by the vent block @ bottom Ventilation required at bottom: 7.2 square inches Tree per block Attic Based on 1 S.F. of vent per 300 S.F. of Enclosed Rafter Space - IRC 806.2 Area of attic: 1500 square feet Number of vent block spaces available @ bottom: 25 spaces Length of ridge available for continuous vent: 50 lineal feet Total vent area required 720.0 square inches of free air "Cor-A-Vent" continuous ridge vent provides:2 13.5 square inches free air per lineal foot. (V-300 The ridge vent can supply 50% 360.0 square inches free air The remaining 50% (360.0)to be provided by the vent blocks @ bottom Free air required per vent block (25 blocks): 14.4 1 square inches free air Footnotes: 1.W SA=Washington State Amendment to the IRC. 2. Cor-A-Vent V-300 rated at 13.5 sq. in. of free air/lineal foot; V-600 rated at 20.0 sq. in. of free air/lineal foot . If using V-600, note on drawings. 3. 40-50% of the required ventailation is allowed at the top with the remaining provided at the bottom. Project Notes. AT MASON COUNTY _:- _�� _ r r DEPARTMENT OF COMMUNITY SERVICES `- -'� BUILDING DIVISION fir .;'.:. :_ 615 W Alder Street, Shelton, WA 98584 www.masoncountywa.gov (360)427-9670 ext.352 Belfair(360)275-4467 ext. 352 Elma(360)482-5269 ext. 352 Owner: `Yl,, Contractor: Permit Number: Site Address: 6gog 4,4ke !7r Plans Examiner: brecJ J� L Sat-- Date: —Z-Z e Current Codes: • 2021 International Residential Code(IRC)WAC 51-51 • 2021 International Building Code(IBC) WAC 51-50 • 2021 International Mechanical Code(IMC)WAC 51-52 • 2021 Uniform Plumbing Code (UPC)WAC 51-56 • 2021 International Energy Conservation Code (IECC), WAC 51A1R & 51-11C • 2021 International Fire Code WAC 51-54A • 2021 International Existing Building Code WAC 51-50 Design Criteria: • Seismic Zone D2, Wind load 85 mph, Exposure (as determined in R301.2.1.4) • Ground snow load Z5_ lbs. Floor live load vary, see Section R301.5. - • climate Zone: 4C (marine)' • Outdoor Design temperature 23 degrees • Interior Design Temp/7Z min. &76 max for cooling. The numbered items on the following pages are associated with the above referenced codes, as adopted by Mason County Building Department. Each number identifies an item in the attached checklist, as noted on the approved plans. This checklist shall remain attached to the approved plans and be available during inspections by Mason County BuildinL,Inspectors. This checklist is submitted as information only and shall not be construed as an all-inclusive list of code requirements. Errors or omissions in the plans and specifications shall not prevent the Building Official, or his authorized agents, from requiring revisions or corrections to these plans and stopping the progress of the project under permit. Office hours are from 8:00 a.m. until 4:30 p.m. We are closed for lunch noon to 1:00 PM Inspections may be scheduled via the Mason County website www.masoncountywa.gov . While on the home page under Online Services, located on the side bar, click the link Request a Building Inspection.You may also call 360-427-9670 ext. 352 & From Belfair call(360) 275-4467 ext. 352. When scheduling an inspection,the following information will be needed: Permit number, site address, name of owner,type inspection requested,preferred day of inspection, and the telephone number Mason County staff should use when they call to confirm the inspection. Inspections are conducted between 8:30 AM and 4:00 PM 1 Plan Review Checklist-2021 International Residential Code child daycare homes,on each additional story of the dwelling 1.CONSTRUCTION DOCUMENTS&('OMPLIANCE including basements and habitable attics.Each story,including TO APPROVED PLANS :IRC Section R106. (1)Approved site plans shall be attached to the approved building basements and habitable attics,shall have at least one detector. In dwelling or dwelling units with split levels with an plans during inspection. (2)Properly lines shall be marked.(3) intervening door between the adjacent levels,a smoke alarm Setback distances will be measured from the furthest installed on the upper level shall suffice for the lower adjacent projection of the permitted structure_ (3) lower level provided that the lower level is less than on full Manufacturer's installation instructions shall be available story below the upper level.Not less than 3 ft from the door or on the job site at the time of inspection. (4)All work shall be opening that contains a bathtub or shower unless this would installed in accordance with the approved construction prevent placement of a smoke alarm required by this section. documents.(5)Any changes made during construction that In the hallway and in the room open to the hallway in the are not in compliance with the approved construction dwelling units where the ceiling height of a room open to a documents shall be resubmitted for approval as an amended hallway serving bedrooms exceeds that of the hallway by 24 set of construction documents. To request approval of inches or more.Within the room to which a loft is open,in the revisions,complete a"Request to Revise Approved Plan" immediate vicinity of the loft.When more than one smoke application and submit to the Mason County Permit Center alarm is required to be installed the alarm devices shall be along with the approved plans and documents detailing interconnected in such a manner that the actuation of one the proposed changes. alarm will activate all the alarms in the individual unit.The 2.EGRESS WINDOWS: IRC Section R 310&R311. All alarm shall be clearly audible in all bedrooms over background noise levels with all intervening doors closed.Required smoke sleeping rooms and basements with habitable attic space shall alarms shall receive their primary power from the building have at least one open able emergency escape and rescue wiring when such wiring is served from a commercial source opening.Such opening shall open directly into a public way or and when primary power is interrupted,shall receive power yard,or court having a minimum width of 36"that opens to a public way.Emergency escape and rescue openings shall have from a battery.Additions,interior alterations,and repairs shall a minimum net clear opening of 5.7 square feet.Exception: be provided with smoke alarms as required for new dwellings; the smoke alarms shall be interconnected and hard wired. grade floor openings shall have a minimum net clear opening Exception: Work involving the exterior surfaces of dwellings,such as of 5 square feet(see definition below). The minimum net clear the replacement of roofing or siding,the addition or replacement of opening height dimension shall be 24".The minimum net clear windows or doors, or the addition of a porch or deck are exempt. opening width dimension shall be 20".The openings shall Smoke alarms and alarms installed to satisfy Section 1?314.4.1 shall have a maximum height of not more than 44" measured not be required to be interconnected to existing smoke alarms where from the floor to the bottom of the clear opening. such existing smoke alarms are not interconnected or where such Emergency escape and rescue openings shall be operational new smoke alarm or alarm is not capable of being interconnected to from the inside of the room without the use of keys or tools or the existing smoke alarms. Carbon monoxide alarms are required special knowledge.Area wells shall be provided when egress in new residential construction.Carbon monoxide alarms shall windows have a finished sill height below adjacent grade be listed in accordance with UL 2034.Combination carbon elevation.The well shall allow the window to be fully opened monoxide and smoke alarms shall be listed in accordance with and provide a minimum horizontal area of 9 sq.ft,with a UL 2034 and UL 217.Detectors shall be installed outside of minimum horizontal projection and width of 36-inches. Area each separate sleeping room in the immediate vicinity outside wells with a vertical depth of more than 44"shall be equipped of the bedroom in the dwelling and on each level of the with an approved and permanent ladder.Grade floor Emergency dwelling in accordance with manufacturer's specifications. Escape and Rescue Opening:An emergency escape and Rescue Where a fuel burning appliance is located within a opening located such that the bottom of the opening is not more than bedroom or its attached bathroom,a carbon monoxide 44"above or below the finished ground level adjacent to the alarm shall be installed within the bedroom. opening. Heat Detector/Heat alarms:Must be installed in newly attached garages.Must be rated for the ambient outdoor 3.SMOKE CARBON HEAT DETECTION• IRC Section temperature and humidity,shall be installed in new garages R314&R315.All smoke alarms,heat detection and heat that are attached to or located under new and existing alarms shall comply with NFPA 72.Smoke alarms shall be dwellings.Heat detectors and heat alarms shall be installed in listed in accordance with UL217.Combination Smoke and a central location and in accordance eth the manufacturer's Carbon shall be listed with UL 217 and UL2034.Installation instructions.Must be interconnected to alarm or smoke alarm in accordance with the provisions of the International that is installed in the dwelling.Alarms and smoke alarms that Residential Code and the household warning equipment are installed for this purpose shall be in a hallway,room or provisions of NFPA 72. Smoke alarms shall be installed in other location that will provide occupant notification.Heat each sleeping room,outside each separate sleeping area in the Detectors and alarms shall receive their primary power from immediate vicinity of the bedrooms,in napping areas of family the building wiring with a battery backup. 2 4.SAFETY LAZING • R308.Each pane of glazing glass is 25 feet or more above grade, a roof, walking installed in a hazardous location shall be provided with a surfaces or other horizontal [within 45 degrees of horizontal]surface adjacent to the glass exterior. manufacturer's designation specifying who applied the designation,designating the type of glass and the safety R308.4.4.Glazing in guards and railings,including structural glazing standard. The designation shall be visible in the final baluster panels and nonstructural in-fill panels,regardless of installation and shall be acid etched,sand-blasted, ceramic area or height above a walking surface shall be considered a fired,laser etched,embossed or on that cannot be removed hazardous location. Glass used as a handrail assembly,or a without being destroyed. guard section shall be firmly supported on all edges. Where one or more sides of any pane of glass are not firmly R308.4.Hazardous locations.The following shall be supported,detailed construction documents,detailed shop considered specific hazardous locations for the purposes of drawings,and analysis or test data assuring safe performance glazing: for the specific installation prepared by a registered design.(ref IBC2403) R308.4.1 Glazing in all fixed and operable panels of swinging, sliding and bi-fold doors. R308.4.4.1 Structural glass baluster panels. Guards with Exceptions: structural glass baluster panels shall be installed with an • Glazed openings of a size through which a 3-inch attached top rail or handrail.The top rail or handrail shall be diameter sphere is unable to pass. supported by not less than three glass baluster panels or shall • Decorative glazing. be otherwise supported to remain in place should one glass baluster panel fail. R308.4.2.Glazing in an individual fixed or operable panel Exception: An attached top rail or handrail is not required where the adjacent to a door shall be a hazardous location where the glass baluster panes are laminated glass with two or more glass plies bottom exposed edge of the glazing is less then 60 inches of equal thickness and of the same glass type. above the floor or walking surface and it meets either of the R308.4.5. Glazing in walls, enclosures,or fences containing or following conditions: (1)Where the glazing is within 24 inches of either side of the door in the plane of the door in a adjacent to hot tubs, spas,whirlpools,saunas,steam rooms, closed position.(2)Where the glazing is on a wall less than bathtubs,showers and indoor or outdoor swimming pools 180 degrees from the plane of the door in a closed position where the bottom exposed edge of the glazing is less than 60 and within 24 inches of the hinge side of an in-swinging door. inches measured vertically above any standing or walking Exceptions: surface shall be a hazardous location.This shall apply to 1. Decorative glazing. single glazing and each pane in multiple glazing.Exception: 2. When there is an intervening wall or other permanent Glazing that is more than 60 inches measured horizontally,from the barrier between the door and the glazing. water's edge of a bathtub,hot tub,spa,whirlpool, or swimming pool 3. Where access through the door is to a closet or storage or from the edge of a shower,sauna or steam room. area 3 ft or less in depth. The glazing in this application R308.4.6. Glazing adjacent to stairs and ramps. Glazing shall comply with Section R308.4.3. where the bottom exposed edge of the glazing is less than 36 4. Glazing that is adjacent to the feed panel of patio doors. inches above the plane of the adjacent walking surface of stairways, landings between flights of stairs and ramps shall R308.4.3.Glazing in an individual fixed or operable panel be a hazardous location. that meets all the following conditions: Exceptions: 1. The exposed area of an individual pane is larger than 1. Where glazing is adjacent to a walking surface and 9 square feet;and a horizontal rail is installed at 34 to 38 inches above the walking surface. The rail shall be capable of 2. The bottom edge of the glazing is less than 18 withstanding a horizontal load of 50 pounds per inches above the floor;and - linear foot without contacting the glass and have a 3. The top edge of the glazing is more than 36 inches cross-sectional height of not less than I%:inches. above the floor;and 2. Glazing 36-inches or more measured horizontally 4. One or more walking surfaces are within 36 inches, from the walking surface. measured horizontally and in a straight line,of the R308.4.7.Glazing adjacent to the bottom stair landing. glazing. Glazing adjacent to the landing at the bottom of a stairway Exceptions. where the glazing is less than 36 inches above the landing and 1. Decorative glazing. within a 60-inch horizontal arc less than 180 degrees from the 2. Where glazing is adjacent to a walking surface and a bottom tread nosing shall be a hazardous location. horizontal rail is installed 34 to 38 inches above the Exceptions: walking surface. The rail shall be capable of 1. Where the glazing is protected by a guard complying withstanding a horizontal load of 50 pounds per linear with Section R312 and the plane of the glass is more than foot without contacting the glass and have a cross- 18 inches from the guard sectional height of not less than 1%a inches. 3. Outboard panes in insulating glass units and other multiple glazed panels when the bottom edge of the 3 5. WINDOW OPENINGS:IRC 312.1.1 &312.2 FALL 7.CL.OTHES DRYERS:IRC Section M1502,G2439, PROTECTION:Guards shall be provided for those portions of &IMC Section 504.Clothes dryers shall be exhausted in open-sided walking surfaces including mezzanines,lofts in accordance with the manufacturer's instructions.Dryer accordance with Section 333,stairs,ramps,and landing,that exhaust systems shall be independent of all other systems and are located more than 30 inches measured vertically to the shall convey the moisture to the outside.Exception:Listed and floor or grade below at any point within 36 inches to the edge labeled condensing(ductless)clothes dryers.Ducts shall terminate of the open site.Insect screening shall not be considered as outside of the building.Dryer exhaust duct terminations shall guard.The top of the sill of an operable window opening is be in accordance with the dryer manufacturer's installation located less than 24 inches above the finished floor and greater instructions.If the manufacturer's instruction does not specify than 72 inches above the finished grade or other surface below a termination location,the exhaust duct shall terminate not on the exterior of the building,the operable window shall less than 3 feet in any direction from openings into buildings, comply with one of the following: including openings in ventilated soffits.Exhaust duct 1.Operable windows openings will not allow a 4- termination shall be equipped with a backdraft damper. inch diameter sphere to pass through the opening Screens shall not be installed at the duct termination.The duct when the opening is in its largest opened position. termination shall not be diminished in size and shall provide 2.operable windows that are provided with window an area of not less than 12.5 square inches.Exhaust ducts,not fall prevention devices that comply with ASTM F- less than 4-inch diameter,shall have a smooth interior finish 2090. and shall be constructed of metal not less than 0.0157 inch in Emergency Escape and Rescue Openings.Where operable thickness.The insert end of the duct shall extend into the windows serve as emergency escape and rescue opening,a adjoining duct fitting in the direction of airflow.Exhaust ducts window opening control device or fall prevention device,after joints shall be sealed and shall be mechanically fastened in operation to release the control device allowing the window to accordance with M1601.4.1.Ducts shall not be joined with fully open,shall not reduce the net clear opening area of the screws or similar fasteners that protrude more than 1/8 inch window unit to less than the area required by Section R310.2.1 into the inside of the duct.Where dryer exhaust ducts are and R310.2.2. enclosed in wall or ceiling cavities,such cavities shall allow the installation of the duct without deformation.Ducts must IRC R303 NATURAL LIGHT&VENTILATION: be supported at intervals not to exceed 12-ft and shall be Habitable rooms shall have an aggregate glazing area of not secured in place.Transition ducts shall be a single length and less than 8 percent of the floor area of such rooms. are listed and labeled in accordance with UL2158A.Duct shall Exceptions:The glazed areas need not be provided in rooms not be greater than 8 feet in length and shall not be concealed where artificial light is provided that can produce an average within construction.Booster fans are prohibited.The illumination of 6 footcandles(65 lux)over the area of the room at a maximum length of a clothes dryer exhaust duct shall be height of 30 inches above the floor level. determined by one of the methods in Sections MI502.4.6.1 Adjoining rooms for the purpose of determining light requirements,any room shall be considered as a portion of an through M1502.4.6.3 or shall not exceed 35 feet from the transition duct from the dryer to the outlet terminal.When adjoining room when at least one-half of the area of the common wall is open and unobstructed and provide an fittings are used the maximum length of the duct shall be opening of not less than one-tenth of the floor area of the reduced in accordance with Table M1502.4.6.1.The maximum length of the exhaust duct does not include the transition duct. interior room but not less than 25 square feet Exception: Opening required for light shall be permitted to open into a sunroom with thermal isolation or a patio cover,provided there is an operable 8.pommlc COOKING EXHAUST EOUIPMENT: area between the adjoining room and the sunroom orpatio cover of IRC Section M1501,M1503,M1504, M1505,M1901& not less than one-tenth of the floor area of the interior room but not M1306.Where Domestic cooking exhaust equipment is less than 20 square feet. provided,it shall comply with one of the following: 1.The fan for overhead range hoods and downdraft exhaust G.F.XHAUST FANS:IRC Section M1501,M1504, Exhaust equipment not integral with the cooking appliance shall be fans are required in each kitchen,bathroom, water closet listed and labeled in accordance with UL 507. room,indoor swimming pool, spa,and other rooms where 2. Overhead range hoods and downdraft exhaust equipment water vapor or cooking odor is produced.The air removed by with integral fans shall comply with UL 507. every mechanical exhaust system shall be discharged outdoors 3.Domestic cooking appliances with integral downdraft at a point specified in WC Section 1504.3. The exhaust shall exhaust equipment shall be listed and labeled in discharge: 1.Not less than 3 feet from property lines.2.Not accordance with ANSI Z21.1 or UL 858. less than 3 feet from gravity air intake openings,operable 4.Microwave ovens with integral exhaust for installation windows,and doors.3.Not less than 10 feet from mechanical over the cooking surface shall be listed and labeled in air intake openings except where either of the following apply: accordance with UL 923. 3.1.The exhaust opening is located not less than 3 feet above M1503.2.1 OPEN-TOP BROILER EXHAUST:Domestic the air intake opening.3.2.The exhaust opening is part of a factory-built intake/exhaust combination termination fitting open-top broiler units shall be provided with a metal exhaust hood,having a minimum thickness of 0.0157 inch(No.28 installed in accordance with the manufacturer's instructions, and the exhaust air is drawn from a living space.4.Openings gage).Such hoods shall be installed with a clearance of not shall comply with Sections R303.5.2 and R303.6 less than 1/4 inch between the hood and the underside of 4 combustible material or cabinets.A clearance of not less than 24 inches shall be maintained between the cooking surface and M1505.4.4.3-Kitchen range hoods for domestic cooking the combustible material or cabinets.The hood width shall not appliances shall meet or exceed either the minimum airflow or be less than the width of the broiler unit and shall extend over the minimum capture efficiency in accordance with Table the entire unit.EXCEPTIONS:1.Broiler units that incorporate an M1505.4.4.3.Capture efficiency ratings shall be determined in integral exhaust system, and that are listed and labeled for use accordance with ASTM E3087.EXCEPTION:Other intermittent without an exhaust hood,shall not be required to have an exhaust kitchen exhaust fans, including downdraft,shall meet or exceed 300 hood 2.Broiler units permanently installed outside the building cfm airflow. envelope and having the cooking surface at least 5 feet below a 1- hourfire resistance rated ceiling shall not be required to have an Table M1505.4.4.3 exhaust hood. Kitchen Range Hood Airflow Rates(cfm)and ASTM M1503.3 EXHAUST DISCHARGE:Domestic cooking E3087 Capture Efficiency(CE) Ratings According to exhaust equipment shall discharge to the outdoors through a Kitchen Range Fuel Type duct.The duct shall have a smooth interior surface,shall be Hood over electric Range Hood Over Combustion Range airtight,shall be equipped with a backdraft damper and shall 60%of CE or 160 CFM 1 80%of CE or 250 CFM be independent of all other exhaust systems.Ducts serving domestic cooking exhaust equipment shall not terminate in an Exhaust systems capable of exhausting more than 400 CFM attic or crawl space or areas inside the building.EXCEPTION: shall be provided with make-up air at a rate approximately Where installed in accordance with the manufacturer's instructions, equal to the exhaust air rate.Such makeup air system shall be and where continuous local exhaust is provided in an enclosed equipped with not less than one damper;each damper shall be kitchen in accordance with Table M1505.4.4.1, listed and labeled a gravity damper or an electrically operated that automatically ductless range hoods shall not be required to discharge to the opens when the exhaust system operates.Dampers shall be outdoors. accessible for inspection, service,repair,and replacement M1503.4 DUCT MATERIAL: without removing permanent construction or any other ducts Ducts serving domestic cooking exhaust equipment shall be not connected to the damper being inspected,serviced, constructed of galvanized steel,stainless steel,or copper. repaired,or replaced. Freestanding or built-in ranges shall Exception:Ducts for domestic kitchen cooking appliances have a vertical clearance above the cooking top of not less equipped with down-draft exhaust systems shall be permitted to be than 30 inches to unprotected combustible material.Reduced constructed of schedule 40 PVC pipe and fittings provided that the clearances are permitted in accordance with installation complies with all the following: the listing and labeling of the range hoods or ovens with 1. The duct is installed under a concrete slab poured on grade. integral exhaust.Appliances shall be installed with clearances 2. The underfloor trench in which the duct is installed is from unprotected combustible materials as indicated on completely backfilled with sand or gravel. the appliance label and in the manufacturer's installation 3. The PVC duct extends not more than I inch above the indoor instructions.Clearances to combustibles shall include such concrete floor surface. 4. The PVC duct extends not more than I inch above grade considerations as door swing,drawer pull,overhead outside of the building. projections or shelving and window swing, coverings,and 5. The PVC ducts are solvent cement. drapes. M1503.5&M1505.4.4.1 KITCHEN EXHAUST RATES: 9.WATER CLOSET:IRC Section R307,UPC Section 402. Where domestic kitchen cooking appliances are equipped with Fixtures shall be set level and in proper alignment with ducted range hoods or down-draft exhaust systems,the fans reference to adjacent walls.No water closet or bidet shall be shall be sized in accordance with Section M1505.4.1:kitchens set closer than fifteen(15)inches from its center to any side shall include a local exhaust system. Such local exhaust wall or obstruction nor closer than thirty(30)inches center to systems shall have the capacity to exhaust the minimum center to any similar fixture.The clear space in front of any airflow rate in accordance with Table M1505.4.4.1.Fans water closet or bidet shall be not less than twenty-four(24) required by this section shall be provided with controls that inches.No urinal shall be set closer than twelve(12)inches enable manual override or automatic occupancy sensor, from its center to any side wall or partition nor closer than humidity sensor,timer controls,or pollutant sensor controls. twenty-four(24)inches center to center.EXCEPTIONS. 1. The An"on/off'switch shall meet this requirement for manual clear space in front of a water closet, lavatory, or bidet in dwelling controls.Manual fan controls shall be readily accessible in the units and sleeping units shall be not less than 21 inches(533 mm).2. room served by the fan. The installation of paper dispensers or accessibility grab bars shall Table M1505.4.4.1 not be considered obstructions. The water closet shall be in a clear Minimum Local Exhaust Rates space not less than 30 inches in width. The clear space in front shall Intermittent Continuous not be less than 24-inches. Water closet seats shall be of smooth, non-absorbent material(UPC 411.3). The effective flush volume of Open Kitchen In accordance with all water closets shall not exceed 1.28 gallons(4.8 L)per flush Section Not permitted M1505.4.4.3 when tested in accordance with ASME A 112.19.2/CSA Enclosed Kitchen In accordance with 5 ACH based on B45.1.EXCEPTIONS. I. Water closets located in day care centers, A kitchen whose Section kitchen Volume intended for use by young children may have a maximum water use permanent openings to M1505.4.4.3 of 3.5 gallons per flush or 13.25 liters per flush. 2. Water closets with interior adjacent spaces bedpan washers may have a maximum water use of 3.5 gallons per do not exceed a total of flush or 13.25 liters per flush.3.Blow out bowls,as defined in 60 s uare eet 5 ANSUASMEA112.19.2M,Section 5.1.2.3 may have a maximum bolts.Spaces between chimneys and floors and ceilings I water use of 3.5 gallons per flush or 13.25 liters per flush(UPC through which chimneys pass shall be fireblocked 411.2)Water closets installed shall meet or exceed the with noncombustible material securely fastened in place.The minimum performance criteria developed for certification of fireblocking of spaces between chimneys and wood joists, high-efficiency toilets under the WaterSense program beams or headers shall be self-supporting or be placed on sponsored by the U.S.Environmental Protection Agency strips of metal or metal lath laid across the spaces (EPA). between combustible material and the chimney.Chimneys shall be provided with crickets where the dimension parallel to 10sH0 .R and BATHTUB AREAS_IRC Section R307, the ridgeline is greater than 30 inches and does not intersect and UPC Sections 408,and 418.See Attached Figure R307.1 the ridgeline.The intersection of the cricket and the chimney The bathtub and shower floors and walls above bathtubs and shall be flashed,and counter flashed in the same manner as installed shower heads and in shower compartments shall be normal roof-chimney intersections.Crickets shall be finished with a nonabsorbent surface.Such wall surface shall constructed in compliance with Figure R1003.20 and Table extend to height of not less than 6 feet above the floor.The R1003.20. Chimney flashing shall be applied according to the clear space in front of the shower opening shall not be less asphalt shingle manufacturer printed instructions. than 24-inches_Shower compartments,regardless of shape, shall have a minimum finished interior of nine hundred(900) 12,TIGHT-FITTING DOORS(FIREPLACE): R1006.6 square inches and shall also be capable of encompassing a (WAC). Solid fuel burning appliances and fireplaces. Solid thirty(30)inch circle.The minimum required area and fuel burning appliances and fireplaces shall be provided with dimensions shall be measured at a height equal to the top of tight fitting metal or ceramic glass doors,and: 1.A source the threshold and at a point tangent to its centerline.The area from outside the structure of primary combustion air, and dimensions shall be maintained to a point of not less than connected to the appliance as per manufacturer's specification. seventy(70)inches above the shower drain outlet with no The air inlet shall originate at a point below the fire box.The protrusions other than the fixture valve or valves,shower duct shall be 4 inches or greater in diameter,not exceed 20 head,soap dishes,shelves,and safety grab bars or rails.Fold-- feet in length,and be installed as per manufacturer's down seats in accessible shower stalls shall be permitted to instructions;or 2.The appliance and manufacturer's protrude into the thirty(30)inch circle.EXCEPTIONS.1. recommended combustion air supply,as an installed unit, Showers that are designed to comply with ICCIANSI All Z 1.2. The shall be certified by an independent testing laboratory to have minimum required area and dimension shall not apply for a shower passed Test No. 11-Negative Pressure Test,Section 12.3,of receptor having overall dimensions of not less than thirty(30)inches ULC S627-M1984 "Space Heaters for Use with Solid Fuels," in width and sixty(60)inches in length. Shower receptors shall modified as follows:2.1.Negative pressure of 8 Pascal shall have curbs not less than 2-inches and not more than 9- inches be initially established with the chamber sealed and the air deep when measured from top of dam or threshold to top of supply,if not directly connected to the appliance,closed off. the drain.Lining materials shall be pitched'/4 inch per foot to 2.2.The air supply,if not directly connected to the appliance, weep holes in the subdrain of a smooth and solidly formed shall then be opened.2.3.The maximum allowable air i subbase.Such lining material shall extend upward on the exchange rate from chamber leakage and intentional air rough jambs of the shower opening to a point not less than 3 supply for the unit(appliance with combustion air supply)in inches above the horizontal surfaces of the seat or the seating the test chamber is 3.5 air changes per hour,or 28 cfrn(cubic area,the top of the finished dam or threshold and shall extend feet of air per minute),whichever is less.EXCEPTION: outward over the top of the permanent seat,permanent seating Combustion air may be supplied to the room in which the solid fuel area,or rough threshold and be turned over and fastened on burning appliance is located in lieu of direct ducting,provided that the outside face of both the permanent seat,permanent seating one of the following conditions is met:1. The solid fuel burning area,or rough threshold and the jams. appliance is part of a central heating plant and installed in an unconditioned space in conformance with the International 11.MASONRY FIREPLACES/CHIMNEYS:Masonry and Mechanical Code,or 2.The solid fuel burning appliance is installed in existing construction directly on a concrete floor or surrounded by concrete chimneys and fireplaces shall be designed and masonry materials as in a fireplace.The combustion air terminus reviewed in accordance with Chapter 10 of IRC.Masonry or shall be located as close to the solid fuel burning appliance as concrete chimneys in Seismic Design Category Do,Di or possible and shall be provided with a barometric damper or D2 shall be reinforced.Reinforcing shall conform to the equivalent.The combustion air source shall be specified by the requirements set forth in Table R1001.1 and Section manufacturer or no less than 4 inches in diameter or the equivalent in R606.R1001 Masonry or concrete chimneys in Seismic area or as approved. Design Category Do,Di or D2 shall be anchored at each floor, 13.FIREPLACE HEARTH EXTENSION• IRC Sections ceiling or roof line more than 6 feet above grade,except R1004.2,R1001.9.R1001.10 and M1414.2. Hearth where constructed completely within the exterior walls. extensions of approved factory-built fireplaces shall be Anchorage shall conform to the follow requirements of Section R1001.4.1: Two 3/i6-inch by 1-inch straps shall be installed in accordance with the listing of the fireplace.The e hearth extension shall be readily distinguishable from the embedded not less than 12 inches into the chimney. Straps shall be hooked around the outer bars and extend 6 inches surrounding floor area.Masonry fireplace hearths and hearth extensions shall be constructed of concrete or masonry, beyond the bend.Each strap shall be fastened to not less than four floor ceiling or floor joists or rafters with two 1/2-inch supported by noncombustible materials.Fireplace hearths shall be at least 4"thick and hearth extensions shall be at least 6 2" thick.The fireplace extension shall extend at least 16"in ferrous meta r located at least 8 inches above the top of l damper s shall be installed in the front of,and at least 8"beyond each side of the fireplace the fireplace opening.Damper opening.Where the fireplace opening is 6 square feet or fireplace or the chimney venting the fireplace and shall be 1 arger,the hearth extension shall extend at least 20"in front operable from the room containing the fireplace. Fireplaces of,and at least 12"beyond each side of the fireplace opening. shall be provided with each of the following: 1.Tightly fitting Hearth extensions for fireplace stoves shall be installed in flueove automati operated by control.readily accessible manual with gas accordance with the listing of the manufacturer's lag shall be installed in accordance with the International specifications. Mechanical Code Section 901,except that the standards for liquefied petroleum gas installations shall be NFPA 58(Liquefied Petroleum 14.1�ACTnRV FIREPLACES INSTALLATIQNS AND Gas Code)and NFPA 54(National Fuel Gas Code). 2.An outside CLEARANCE TO COMBUSTIBLES&MEPLAGE source for combustion air ducted into the firebox.The duct ETREBLOCKING:IRC Sections R1004.1.1, R302.14, shall be at least 6 square inches and shall be provided with an R1001.11, 1003.18, 1003.19,and M1306.2.1. No new or used operable outside air duct damper.3. Site-built fireplaces shall factory-built fireplace shall be installed in Washington state have tight fitting glass or metal doors,or a flue draft induction unless it is certified and labeled in accordance with procedures fan or as approved for minimizing back-drafting.Factory-built and criteria specified in ASTM E2558 Standard Test Method fireplaces shall use doors listed for the installed appliance. for determining particulate matter emission from fires in wood Factory built fireplaces shall use doors listed for the installed burning fireplaces.To certify an entire fireplace model line, appliance.Direct vent appliances or equipment that does not the internal assembly shall be tested to determine its drams,combustion air from inside of the building shall be particulate matter emission performance.Retesting and provided with combustion ventilation and dilution air in recertifying are required if the design and construction accordance with the manufacturer's specifications.Fuel gas specifications of the fireplace model line internal assembly dryers shall be provided with make-up air as directed by change.Testing for certification shall be performed by a manufacturer specifications. Solid-fuel-burning appliances Washington state department of ecology(DOE)approved and shall be provided with combustion air in accordance with the U.S.Environmental Protection Agency(EPA)accredited manufacturers' installation instructions.Where required, laboratory.Masonry and concrete fireplace model lines outdoor combustion air shall be provided in accordance with certified to Washington State Building Code Standard 31-2 IRC G2407.6.The minimum dimension of air openings shall prior to July 1,2013,may retain certification provided the be not less than 3 inches. Two permanent openings,one design and construction specifications of the fireplace model commencing within 12 inches of the top and one commencing line internal assembly do not change. Combustible insulation within 12 inches of the bottom of the enclosure,shall be shall be separated a minimum of 3"from heat producing provided.The openings shall communicate directly or by ducts appliances. Exception:Insulation shall be separated in with the outdoors or spaces that freely communicate with the accordance with conditions stipulated in manufacturer's outdoors.Where directly communicating with the outdoors,or listing. Wood beams,joists,studs,and other combustible where communicating with the outdoors through vertical ducts, material shall have a clearance of not less than 2 inches(51 each opening shall have a minimum free area of 1 square inch mm)from the front faces and sides of masonry fireplaces and per 4,000 Btu/h(550 mm2/kW)of total input rating of not less than 4 inches(102 mm)from the back faces of all appliances in the enclosure[see Figures masonry fireplaces.The airspace shall not be filled,except to G2407.6.1(1)and G2407.6.1(2).Where communicating with provide fireblocking in accordance with Section R1001.12. the outdoors through horizontal ducts,each opening shall have Exceptions:I.Masonry fireplaces listed and labeled for use in a minimum free area of not less than 1 square inch per contact with combustibles in accordance with UL 127 and installed 2,000 Btulh(1100 mm2/kW)of total input rating of in accordance with the manufacturer's instructions are permitted to all appliances in the enclosure see Figure G2407.6.1(3). One have combustible material in contact with their exterior surfaces. permanent opening, commencing within 12 inches of the top of 2.Where masonry fireplaces are part of masonry or concrete P p walls, combustible materials shall not be in contact with the masonry the enclosure,shall be provided.The appliance shall ances of not less than 1 inch from the sides and back or concrete walls less than 12 inches from the inside surface of the have clear nearest firebox lining.3.Exposed combustible trim and the edges of and 6 inches from the front of the appliance.The opening shall sheathing materials such as wood siding,flooring and gypsum board directly communicate with the outdoors or through a vertical or shall be permitted to abut the masonry fireplace sidewalls and hearth horizontal duct to the outdoors,or spaces that freely extension in accordance with Figure RION.11,provided such communicate with the outdoors(see Figure G2407.6.2)and combustible trim or sheathing is not less than 12 inches from the shall have a minimum free area of 1 square inch per inside surface of the nearest firebox lining. 4.Exposed combustible 3,000 Btu/h(734 mmz/kW)of the total input rating of mantels or trim is permitted to be placed directly on the masonry all appliances located in the enclosure and not less than the fireplace front surrounding the fireplace opening providing IMP such combustible materials are not placed within 6 inches of a sum of the areas of all vent connectors in the space.Outside fireplace opening. Combustible material within 12 inches of the combustion air openings shall be corrosion resistant screen or f equivalent protection having not less than 1/<-inch openings and fireplace opening shall not project more than I/s inch or each 1-inch not greater than 1/2"openings.The required size of openings (25 mm)distance from such an opening. for combustion,ventilation and dilution air shall be based on 15.Co ;TrerrrnrT ATD/EXTERIOR AIRSITPPLY,_ the net free area of each opening.Where the free area through a IRC R1001.7.1 (WAC),AND R1006.(WAC), M1701 and design of louver,grille or screen is known,it shall be used in G2407,R303.5.1.Masonry fireplaces shall be equipped with a 7 calculating the size opening required to provide the free area residential bathroom or toilet room having a permanent opening with specified.Where the design and free area of louvers and grilles an area of not less than 100 square inches that communicates with a are not known,it shall be assumed that wood louvers will have space outside of a sleeping room, bathroom, toilet room or storage 25-percent free area and metal louvers and grilles will have 75- closet. Appliances shall be accessible for inspection,service, - percent free area. Screens shall have a mesh size not smaller repair, and replacement without removing permanent than 1/4 inch.Nonmotorized louvers and grilles shall be fixed in construction,other appliances,or other piping or ducts not the open position.Motorized louvers shall be interlocked with connected to the appliance. Appliances shall not be installed the appliance so that they are proven to be in the fully open in a location subject to mechanical damage unless protected by position prior to main burner ignition and during main approved barriers. Appliances designed to be in fixed burner operation.Means shall be provided to prevent the main positions shall be anchored or strapped to resist horizontal burner from igniting if the louvers fail to open displacement caused by earthquake motion in an approved during burner start-up and to shut down the main burner if the manner. Strapping shall be at points within the upper 1/3 and louvers close during operation.Outdoor air openings for fuel- lower 1/3 of the appliance's vertical dimensions.At the lower burning appliances are permitted to connect spaces such as point the strapping shall maintain a minimum distance of 4- ventilated crawl spaces or ventilated attic spaces,provided inches above the controls. Fuel-fired furnaces and boilers those spaces can provide unobstructed openings to the installed in closets and alcoves shall be listed for such outdoors.The exterior air intake shall not be located within the installation.Equipment installed in outdoor locations shall be garage or basement of the dwelling,nor shall the air intake be either listed for outdoor installation or provided with located at an elevation higher than the firebox.Mechanical and protection from outdoor environmental factors that influence gravity outside air intake openings shall be located a minimum operability,durability,and safety of the equipment.Appliances of 10' from any hazardous or noxious contaminant,such as installed in a compartment,alcove,basement or similar space vents, chimneys,plumbing vents,streets,alleys,parking lots shall be accessed by an opening or door and an unobstructed . and loading docks.Where a source of contaminant is located passageway measuring not less than 24-inches wide and large within 10' of an intake opening,such opening shall be located enough to allow removal of the largest appliance in the space, a min.of 3'below the contaminant source.Exhaust from provided there is a level service space of not less than 30- dwelling units,toilet rooms,bathrooms and kitchens shall not inches deep and the height of the appliance,but not less than be considered as hazardous or noxious. 30-inches,at the front or service side of the appliance with the door open. Attics containing appliances requiring access shall MAPPLIANCE INSTALLATION:IRC Chapter 13, have an opening and a clear-unobstructed passageway large G2406. Installation of appliances shall conform to the enough to allow removal of the largest appliance,but not less conditions of their listing and label and the manufacturer's than 30-inches high and 22-inches wide and not more than 20- instructions.A permanent factory-applied nameplate shall be feet long when measure from the opening to the appliance. affixed to appliances with information listed in accordance The passageway shall have continuous solid flooring not less with M1303.NOTE: The standards for liquefied petroleum than 24-inches wide.A level service space at least 30-inches x gas installations shall be in accordance with NFPA 58 30-inches along all sides.Appliances located in under floor (Liquefied Petroleum Gas Code)and the International Fuel spaces shall have an unobstructed passageway large enough to Gas Code.The manufacturer's operating and installation remove the largest appliance,but not less than 30-inches high instructions shall remain attached to the appliance.Fuel- and 22- inches wide,nor more than 20-feet long,measured fired appliances shall not be in sleeping rooms, bathrooms, from the opening to the appliance.A level service space at toilet rooms,or storage closets,or in a space that opens only least 30-inches x 30-inches along all sides. If the service into such rooms or spaces.Exception where the installation space exceeds 12-inches below the adjoining grade,the walls complies with one of the following: 1. The appliance is a direct- on the passageway shall be lined with concrete or masonry vent appliance installed in accordance with the conditions of the extending 4-inches above the adjoining grade.Appliance listing and the manufacturer's instructions.2. Vented room heaters, supported from the ground shall be level and firmly supported wall furnaces,vented decorative appliances,vented gas fireplaces, on a concrete slab or other approved material extending not vented gas fireplace heaters and decorative appliances for less than 3 inches above the adjoining ground. Such support installation in vented solid fuel-burning fireplaces are installed shall be in accordance with the manufacturer's installation in rooms that meet the required volume criteria of Section G2407.5. instructions.Appliances suspended from the floor shall have a 3.A single wall-mounted unvented room heater is installed in a clearance of not less than 6 inches from the ground.Appliances bathroom and such unvented room heater is equipped as specified in suspended from the floor shall have a clearance of not less Section G2445.6 and has an input rating not greater than 6,000 Btulh (1.76 UP). The bathroom shall meet the required volume criteria of than 3-inches from the ground in stalled in accordance with Section G2407.5. 4.A single wall-mounted unvented room heater is manufacturer specifications.Luminaries,controlled by a installed in the bedroom and such unvented room heater is equipped switch at the passageway opening shall be installed near the as specified in Section G2445.6 and has an input rating not greater under floor and attic appliances and a receptacle outlet shall than 10,000 Btu/h(2.93 k9g. The bedroom shall meet the required be installed at or near the appliance location. volume criteria of Section G2407.5.5. The appliance is installed in a room or space that opens only into a bedroom or bathroom, and 17,APPLIANCES LOCATED IN GARAGE: IRC Section such room or space is used for no other purpose and is provided with M1307,IBC 1607.10 Appliances located in a garage,carport, a solid weather-stripped door equipped with an approved self-closing or other location subject to vehicle damage shall be protected device. Combustion air shall be taken directly from the outdoors in accordance with Section G2407.6. 6.A clothes dryer is installed in a with approved barriers.Vehicle barrier systems for passenger 8 cars-shall be designed to resist a single load of 6,000 lbs. appliance.Gypsum board shall not be used as a support base Applied horizontally in any direction to the barrier system and under an appliance. shall have anchorage or attachment capable of transmitting 19.1,pG(PROPANE)APPLIANCES&TANKS•IFGC this load to the structure.For design of the system,the load 303,NFPA 58,IRC M1301,IRC Chapter G24,&IMC shall be assumed to act at a minimum height of 1 6° above the Section 303.7 and IFGC303.7.Appliances shall be installed in floor or ramp surface on an area not to exceed 1 sq.ft. accordance with the manufacturer listing.Fuel-gas appliances Equipment and appliances having an ignition source shall be elevated such that the source of ignition is not less than least shall not be in sleeping rooms,bathrooms,toilet rooms, 18"above the floor surface on which the equipment or storage closets or in a space that opens only into such rooms unless allowed in accordance with IRC G2406.2&IMC appliance stands unless the appliance is listed as flammable 303.3.Appliances installed in pits or excavations shall not vapor ignition resistant.Rooms or spaces that are not part of PP t come in direct contact with the surrounding soil and shall be he living space of a dwelling unit and that communicate with installed not less than 3 inches above the pit floor.The sides of the private garage through openings shall be part of the garage and appliances located in the space shall be elevated as the pit or excavation shall be held back not less than 12 inches specified above. from the appliance.Where the depth exceeds 12 inches below adjoining grade,the walls of the pit or excavation shall be 18.WATER HEATERLUPC Chapter 5 &608,IRC lined with concrete or masonry. Such concrete or masonry Section MI307.2,M2005&IECC/WSEC R403.4.When shall extend not less than 4 inches above adjoining grade and water heaters or hot water storage tanks are installed in shall have sufficient lateral load-bearing capacity to resist locations where leakage of the tanks or connections will cause collapse.Excavation on the control side of the appliance shall damage,the tank or water heater shall be installed in a extend horizontally not less than 30 inches. watertight pan of corrosion resistant material. The pan shall The appliance shall be protected from flooding in be at least 1.5"deep and with a 3/a"diameter drain to the an approved manner. exterior of the building not less than 6"and not more than 24" *�A �A�TIMER' SPECS: RC Section M1302, above the adjacent ground surface.Temperature and pressure 20. — relief valves shall be drained to the outside of the building. M1303.1,M1307,and IMC 304.1.All appliances shall be Drains may not be trapped.Pressure relieve drains must listed and bear a permanent factory applied nameplate(s) terminate not more than 2'nor less than 6"above the ground affixed to the appliances with manufacturer's name or or the flood level of the area receiving the discharge and trademark,model number,serial number,and seal or mark of pointing downward.Water heaters shall be anchored or testing agency. The installer shall leave the manufacturer's strapped to resist horizontal displacement due to earthquake installation and operating instructions attached to the motion. Twenty-two(22)gage x%"straps shall be used and appliance. be placed at points within the upper one-third(1/3)and lower one-third(1/3)of its vertical dimensions.At the lower point,a 21.VACUXJM BREAKERS: UPC Sections 603.5.7 Potable minimum distance of 4"shall be maintained above the water outlets with hose attachments,other than water heater controls.When the water supply system is provided with a drains,boiler drains,and clothes washer connections shall be pressure regulating device or check valve a properly sized protected by a listed non-removable hose bibb backflow expansion tank shall be installed per manufacturer preventer,a non-removable hose Bibb vacuum breaker,or an specifications. Check with your water purveyor. Water atmospheric vacuum breaker installed at least 6"above the heaters used to supply both potable hot water and hot water for highest point of usage located on the discharge side of the last space heating shall be installed in accordance with the valve.In climates where freezing temperatures occur,a listed manufacturer's installation instructions. In accordance with self-draining frost-proof hose bibb with an integral backflow WSEC R403.2 The manufacturer shall configure each gas,oil preventer or vacuum breaker shall be used. and electric boiler(other than a boiler equipped with a tankless domestic water heating coil)with an automatic means 22. •UPC of adjusting the water temperature supplied by the boiler to Section 1007,807.3,&909.1.Floor drain or similar traps ensure incremental change of the inferred heat load will cause connected to the drainage system and subject to infrequent use an incremental change in the temperature of the water supplied shall be protected with a trap seal primer and shall be by the boiler.This can be accomplished with outdoor reset, accessible for maintenance.No domestic dishwashing indoor reset,or water temperature sensing.Service water machine shall be directly connected to a drainage system or heater shall be equipped with automatic temperature controls food waste disposer without the use of an approved and shall be set to 120oF.WSEC Section 403.5.5 Service hot dishwasher air gap fitting on the discharge side of the water systems shall be installed within the building thermal dishwashing machine.Traps for island sinks and similar envelope.Exceptions:1. Where the hot water system efficiency is equipment shall be listed air gaps and shall be installed with greater than or equal to 2.0 UEF:2.Tankless water heaters.3. Gas the flood-level marking at or above the flood level of the sink heat pump water heaters intended for exterior installation.4. Atmospheric vented gas water heaters.All tank-type water heaters or drainboard,whichever is higher.See handout attached. in unconditioned spaces,or on concrete floors in conditioned 23.c'..RAGE/DWELLING DOOR/OPENINGS: spaces,shall be placed on an insulated surface with a -j minimum thermal resistance of R-10,and a minimum IRC Section R302.5.1 Openings from a private garage directly compressive strength of 40 psi or engineered to support the into a room used for sleeping purposes shall not be permitted. 9 Other openings between the garage and residence shall be treated wood. When a structure is equipped with an equipped with solid wood doors not less than V/s inches in automatic fire-sprinkler system installed in accordance thickness,solid or honeycomb-core steel doors not less than with P2904 fire-resistive ratings may be reduced in 11/8 inches thick,or 20-minute fire-rated doors.Doors shall be accordance with Table R302.1(2). Exception for self-latching and equipped with a self-closing automatic projections: a. The fire-resistance rating shall be permitted to closing device. be reduced to 0 hours on the underside of the eave overhang if freblocking is provided from the wall top plate to the 24.GARAGE/DWELLING SEPARATION: IRC Section underside of the roof sheathing. b. The fire-resistance rating R302.5 and R302.6.The garage shall be separated from the shall be permitted to be reduced to 0 hours on the underside of residence and its attic area by not less than''V2"gypsum board the rake overhang where ventilation openings are not installed or equivalent applied to the garage side. Garages beneath in the rake overhang or in walls that are common to attic habitable rooms shall be separated from all habitable rooms areas. Construction,projections,openings,and penetrations of above by not less than 5/8"Type X gypsum board or exterior walls of dwellings and accessory buildings shall equivalent.Where the separation is a floor-ceiling assembly, comply with Table R302.1(1);or dwellings equipped the structure supporting the separation shall also be protected throughout with an automatic sprinkler system installed in by not less than%"gypsum board or equivalent. Garages accordance with Section P2904 shall comply with Table located less than 3-feet from a dwelling unit on the same lot R302.1(2).Exceptions: shall be protected with not less than%s-inch gypsum board 1.Walls,projections, openings, or penetrations in walls applied to the interior side of the exterior walls that are within perpendicular to the line used to determine the fire separation this area.Ducts in the garage and ducts penetrating the walls or distance. ceilings separating the dwelling from the garage shall be 2.Walls of individual dwelling units and their accessory constructed of a minimum 26-gage sheet metal or other structures located on the same lot. approved material and shall have no openings into the garage. 3.Detached tool sheds and storage sheds,playhouses and similar Penetration shall be protected by filling the opening around the structures exempted from permits are not required to provide penetrating item with approved material to resist the free wall protection based on location on the lot.Projections beyond passage of flame and products of combustion.Openings shall the exterior wall shall not extend over the lot line. meet the same protection as required in R302.5. 4.Detached garages accessory to a dwelling located within 2 feet of a lot line are permitted to have roof eave projections not 25.SEPARATION BETWEEN DWELLING UNITS: exceeding 4 inches. 5.Foundation vents installed in compliance with this code are IRC Section R302.3.1.Dwelling units in two-family dwellings permitted shall be separated from each other by wall and floor assemblies having not less than a 1-hour fire-resistance rating.NOTE: 26.FLOOR AREA: IRC Section R304,R306. Every Must be tested in accordance with ASTM E119,UL 263,or dwelling unit shall have at least one habitable room with not Section 703.3.2.of the IBC. Such separation shall be provided less than 70 square feet of gross floor area. Habitable rooms regardless of whether a lot line exists between the two dwelling shall not be less than 7-feet in any horizontal dimension. units or not.Fire-resistance-rated floor/ceiling and wall Exception:Kitchens.Every dwelling unit shall be provided with a assemblies shall extend to and be tight against the exterior wall, water closet, lavatory,bathtub or shower,kitchen area with a and wall assemblies shall extend from the foundation to the separate sink;be connected to an approved sewage disposal system, underside of the roof sheathing. and shall be connected to an approved water supply with hot and Exceptions: cold water. LA fire-resistance rating of'12 hour shall be permitted in buildings equipped throughout with an automatic sprinkler 27.MPM4UM CEILING HEIGHTS: IRC R305. Habitable system installed in accordance with Section P2904. space,hallways,and portions of basements containing these 2.Wall assemblies need not extend through attic spaces where spaces shall have a ceiling height of not less than 7 feet. the ceiling is protected by not less than 5/8-inch Type X gypsum Bathrooms,toilet rooms and laundry rooms shall have a board,an attic draft stop constructed as specified in Section ceiling height of not less than 6 feet 8 inches. Exceptions; R302.12.1 is provided above and along the wall assembly 1.For rooms with sloped ceilings, the required floor area of the separating the dwellings and the structural framing supporting room shall have a ceiling height of not less than 5 feet(1524 the ceiling is protected by not less than /2-inch gypsum board mm)and not less than 50 percent of the required floor area shall or equivalent. have a ceiling height of not less than 7 feet(2134 mm). FIRE-RESISTANCE OF EXTERIOR WALLS: IRC 2.The ceiling height above bathroom and toilet room fixtures R302.1,Tables R302.1 1 Exterior walls with a fire separation shall be such that the fixture is capable of being used for its intended purpose.A shower or tub equipped with a showerhead distance less than 5-feet shall have not less 1 hour tested in shall have a ceiling height of not less than 6 feet 8 inches above accordance with ASTM El 19,UL 263 or Section 703.3 of an area of not less than 30 inches by 30 inches at the the International Building Code with exposure from both sides. showerhead Openings are not permitted at less than 3-ft and limited when 3.Beams,girders,ducts or other obstructions located between 3-ft to 5-ft openings are limited to 25% in basements containing habitable space shall be permitted to maximum wall area.Projections shall not extend to a point project to within 6 feet 4 inches(1931 mm)of the finished floor. closer than 2-feet from the line used to determine the fire 4.Beams and girders spaced apart not less than 36 inches in separation distance. If located between 2 ft and 5 feet a 1-hour clear finished width shall project not more than 78 inches from fire rating on the underside,or heavy timber,or fire-retardant- the finished floor. 10 vertical rise greater than 12 feet between floor levels or R305.1.1 Basements. Portions of basements that do not landings.Landings shall be the same width of the stairway contain habitable space,hallways shall have a ceiling height of served and at least 36 inches measured in the direction of not less than 6 feet 8 inches.Exception:At beams, girders, travel.Exterior landings,decks,balconies,stairs,and similar ducts or other obstructions, the ceiling height shall be not less facilities shall be positively anchored to the primary structure than 6 feet 4 inches from the finished floor. to resist both vertical and lateral forces or shall be designed to be self-supporting. Attachments shall not be accomplished by 28.ATTIC ACCESS IRC R807.1.Buildings with use of toenails or nails subject to withdrawal. combustible ceiling or roof construction shall have an attic access opening to attic areas that have a vertical height of 30 31.GIJARDS: IRC Section R312.Table R301.5 Guards shall inches or greater over an area of not less than 30 square feet. be provided for open sided walking surfaces including,stairs, Minimum access openings shall not be less than 22"x 30"and ramps,landings,porches,balconies,or raised floor surfaces shall be located in a hallway or other location with ready located more than 30 inches above grade or a floor below. access.Where the access is in a ceiling,minimum Grade shall be measured 36-inches horizontally to the edge of unobstructed headroom in the attic space shall be 30 inches at the open side.Required guards at open-sided walking some point above the access measured vertically from the surfaces,including stairs,porches,balconies,or landings,shall bottom of ceiling framing members.The vertical height shall be not less than 36 inches in height as measured vertically be measured from the top of the ceiling framing members to above the adjacent walking surface or the line connecting the the underside of the roof framing members. nosing. Exception: 29,EXTE IOR DOORS/EXITS: IRC R311.No less than 1.Guards on the open sides of stairs shall have a height of not less one egress door shall be provided to each dwelling.The than 34 inches measured vertically from a line connecting the nosing. egress door shall be side-hinged and with a min.clear width of 2.Where the top of the guard serves as a handrail on the open sides 32-inches in width and not less than 78-inches in height, of stairs, the top of the guard shall not be less than 34"and not more measured from the top of the threshold to the bottom of the than 38"as measured vertically from a line connecting the nosing. stop.The exit door shall provide direct access from the Required guards shall be designed such that a sphere 4" in habitable portions of the dwelling to the exterior without diameter cannot pass through. requiring travel through a garage.Egress from habitable levels The Exceptions: triangular openings at the o en side of a stair, formed by the SuP including habitable attics and basements not provided with an riser, tread and bottom rail of a guard are per to be of such egress door shall be by a ramp or a stairway in accordance to size that 6-inch diameter sphere cannot pass through. applicable IRC sections 311.8 or 311.7.Egress doors shall be si si Guards in the open sides erstairs shall not have openings which readily open able from the side from which egress is to be allow passage of a sphere 4- 3/8"in diameter. made without the use of a key or special knowledge or effort. Handrail assemblies and guards shall be able to resist a single The required egress door shall provide a continuous and concentrated load of 2001bs.,applied in any direction at any unobstructed path of egress travel from all portions of the point along the top,and have attachment devices and dwelling without travel through a garage.The egress door supporting structure to transfer this loading to appropriate shall open directly into a public way or to a yard or court structural elements of the building.Intermediate rails(all those that opens to a public way. except the handrail),balusters and panel fillers shall be designed to withstand a horizontally applied normal load of 50 30.1 ""'DINGS AT DOORS AND STAIRWAYS& lbs.on an area equal to 1 sq.ft.,including openings and space CONSTRUCTION:IRC R311.Landings or finished floors at between rails.Insert info on notchincy. the required egress door shall not be more than 1-1/2"lower than the top of the threshold. Exception: The landing on the 32.HAND AIL S:IRC Section R311.7.8,R311.8.3 Handrail exterior side shall not be more than 7-314"below the top of shall be provided on not less than one side of each flight of the threshold provided the door does not swing over the stairs with four or more risers.Such handrails shall be placed landing or floor. There shall be a floor or landing on each side not less than 34" and not more than 38"above the nosing of of all other exterior doors.Floor elevations for the doors shall the treads.Handrails for stairways shall be continuous for the be provided with landings no more than 7-3/4"below the top full length of the flight,from a point directly above the top of the threshold. Exception:A top landing is not required riser to a point directly above the lowest riser. Handrail ends where a stairway of n o t m o r e t h a n two risers is located shall be returned or terminate in newel posts or safety ` on the exterior side of the door,provided the door does not terminals. Handrails adjacent to the wall shall have a space swing over the stairway. Storm and screen doors shall be not less than 1 '/z"between the wall and the handrail. TYPE 1: permitted to swing over exterior stairs and landings.When Circular handrails shall have an outside diameter of at least 1- exterior landings or floors serving the required egress door are I/4"and not greater than 2". If the handrail is not circular,it not at grade,they shall be provided with access to grade by shall have a perimeter dimension of at least 4" and not greater means of a ramp or stairway.The width of each landing shall than 6 1/4"with a maximum cross-section dimension of 2 1/4". not be less than the door served and shall have a dimension of TYPE 11: Handrails with a perimeter greater than 6 '/4"shall 36-inches measured in the direction of travel.The slope at have a graspable finger recess area on both sides of the profile. exterior landings shall not exceed'/4 unit vertical in 12 units The finger recess shall begin a distance of 3/4"measured horizontal(2 percent).A flight of stairs shall not have a vertically from the tallest portion of the profile and achieve a 11 depth of at least 5/16"within 7/8"below the widest portion of stairways providing access to a basement from the outside the profile.This required depth shall continue for at least 3/8" grade level shall be provided with an artificial light source to a level that is not less than 1 3/a"below the tallest portion of located in the immediate vicinity of the bottom landing of the the profile. The minimum width of the handrail above the stairway.Stairway illumination shall receive primary recess shall be 1 '/4"to a maximum of 2 1/4". Edges shall have power from the building wiring. The illumination of a minimum radius of.01". exterior stairways shall be controlled from inside the dwelling. Exception:A switch is not required where remote, central, or 33.STAIR WIDTH: IRC Section R311.7.1 Stairways shall automatic control of lighting is provided. not be less than 36"in clear width at all points above the handrail height and below the required headroom height. 38.SPECIAL STAIRWAYJRC Section R311.4, R311.7.10, Handrails shall not project more than 4%"on either side of R311.7.5.2.1, Spiral stairways and bulkhead enclosure the stairway and the minimum clear width of the stairway at stairways shall comply with all requirements of S e c t i o n and below the handrail height,including treads and landings, 31 1.7. Spiral stairways are permitted,provided the minimum shall not be less than 31 ''/z"where the handrail is installed on width at and below the handrail shall be not less than 26 inches one side,and 27"where handrails are installed on both sides. and the walk line radius are not greater than 24'/2 inches.Each The width of spiral stairways shall be in accordance with tread having a 6-3/4 inch at the walk line.Treads shall be Section R311.7.10.1. identical,and the rise shall be no more than 9 '/2". Headroom shall be not less than 6 feet 6 inches. Stairways serving 34.STAIR TREADS&RISERS AND RAMP SLOPE: bulkhead enclosures see IRC Section R311.7.10.2. IRC Section R311.7.5 &R311.8.1 The riser height shall be not Note: Washington State Amendment to IRC R311.4: Stairways, more than 7-3/4 inches.The greatest riser height within any alternating tread devices, ship's ladders, or ladders within an flight of stairs shall not exceed the smallest by more than 3/8". individual dwelling unit or sleeping unit used for access to areas of The minimum tread depth shall be 10".The tread depth within 200 square feet(18.6 m2) or less, are exempt from the requirements any flight of stairs shall not exceed the smallest by more than of Sections R311.4 and R311.7, where such devices do not provide 3/8".A nosing not less than 1/4"but not more than 1 ''/4"shall exclusive access to a kitchen or bathroom. Such areas shall not be located more than 10 feet(3048 mm) above the finished floor of the be provided on stairways with solid risers.Open risers are space below. permitted,provided that the openings located more than 30 inches,as measured vertically,to the floor or grade below, 39.FOUNDATION FOOTING SIZE: IRC Section R403. does not permit the passage of a 4"diameter sphere.Ramps Assume load-bearing value of soil 1500 PSF unless proven shall have a maximum slope of 1 unit vertical in 12 units otherwise(Soils report required). Snow load is designated by horizontal.Exception:Nosing is not required where the tread area,when snow load is between designated loads,use the depth is at least 11". The opening between adjacent treads is higher snow load. The minimum width,W,and thickness,T, not limited to stairs with a total rise of 30"or less. for concrete footings shall be in accordance with Tables R403.1(1)or R403.1(3)and Figure R403.1(1)or R403.1.3,as 35.STAIR HEADROOM CLEARANCE: IRC R311.7.2 applicable,but not less than 12 inches in width and 6 inches All parts of the stairway shall not be less than 6'8" measured in depth.The footing width shall be based on the load-bearing vertically from the sloped plane adjoining the tread nosing or value of the soil in accordance with Table R401.4.1.Footing from the floor surface of the landing or platform.Exception:1. projections,P,shall be not less than 2 inches and shall not Where the nosing of the treads on the side of a flight of the edge of a exceed the thickness of the footing.Footing thickness and floor opening through which a stair passes, the floor opening shall not projection for fireplaces shall be in accordance project horizontally into the required headroom more than 4%inches with Section R1001.The size of footings supporting piers and 2.Spiral stairways Section R311.7.10.1. columns shall be based on the tributary load and allowable soil 36.UNDER STAIR PROTECTION: IRC Section R302.7 pressure in accordance with Table R401.4.I.Footings for Enclosed space under stairs that is accessed by a door or wood foundations shall be in accordance with the details set access panel shall have walls,under-stair surface and any forth in Section R403.2,and Figures R403.1(2)and R403.1(3). soffits protected on the enclosed side with 1/2-inch gypsum Footings for precast foundation shall be in accordance with the board. details set forth in Section R403.4,Table R403.4,and Figures R403.4(1)and R403.4(2).Exception:Light frame construction 37.ILLUMINATION• IRC Section R303.7.All interior and shall be permitted to have minimum footing sue in accordance exterior stairways shall be provided w with Figures R403.1.1(2)through R403.1.1(4)in lieu of that a means to illuminate the stairs,including landings and treads.Interior stairways determined by Table R403.1(1).See attached tables.All exterior walls shall be supported on continuous footings placed on shall be provided with an artificial light source located in the undisturbed natural soils or engineered fill.In accordance with immediate vicinity of each landing of the stairway.Lighting R403.1.3.6,detached one-and two-family dwellings that are shall be capable of laminating treads and landing to levels not three stories,or less in height and constructed with stud less than 1 foot candle(11 lux)measured a center of treads bearing walls,isolated plain concrete footing supporting and landings.Where lighting outlets are installed in the interior column,or pedestals are permitted. R402.1.2 All required stairways,there shall be a wall switch at each floor level to interior braced wall panels shall be supported on footings at control the lighting outlet where the stairway has 6 or more intervals not exceeding 50-ft. risers.Exterior stairways shall be provided with a light source located at the top of the landing of the stairway.Exterior 12 40.FoOTING RE' ?ORCF.MF.NT: IRC Section 42.STEPPED FOUNDATIONS IN SEISMIC R403.1.3.1,R403.1.3.2(Concrete&Masonry stemwall), DESIGN D2: IRC Section 602.11.2. Where the height R403.1.3.3 (turn-down footings). In Seismic Design of a required braced wall line that extends from the Categories Do,D,and Dz where a construction joint is created foundation to floor above varies more than 4',the between a concrete footing and a concrete stem wall,not braced wall panel shall be constructed in accordance fewer than one No.4 vertical bar shall be installed at not more with figure R602.11.2 and as follows: See attached than 4 feet on center.The vertical bar shall have a standard details. 1)Where the lowest floor framing rests directly hook and extend to the bottom of the footing and shall have on a sill bolted to a foundation not less than 8' in length support and cover as specified in Section R403.1.3.5.3 and extend not less than 14 inches into the stem wall. Standard along a line of bracing,the line shall be considered as double plate of the cripple stud wall beyond hooks shall comply with Section R608.5.4.5.Not fewer than braced.The of footing that extends to the lowest framed one No.4 horizontal bar shall be installed within 12 inches the segment (305 mm)of the top of the stein wall and one No.4 horizontal floor shall be spliced by extending the upper top plate a bar shall be located 3 to 4 inches from the bottom of the minimum of 4' along the foundation. Anchor bolts shall footing.-Masonry stem walls shall be solid grouted.In Seismic be located a maximum of 1' and 3' from the step Design Categories Do,D,and Dz,slabs-on-ground cast foundation. 2)Where cripple walls occur between the monolithically with turned-down footings shall have not fewer top of the foundation and the lowest floor framing,the than one No.4 bar at the top and the bottom of the footing or bracing requirements for a story shall apply,see one No.5 bar or two No.4 bars in the middle third of the R602.10.9 and R602.10.9.1.3)Where only the bottom of footing depth.Where the slab is not cast monolithically with the foundation is stepped and the lowest floor framing the footing,No.3 or larger vertical dowels with standard rests directly on a sill bolted to the foundations,the hooks on each end shall be installed at not more than 4 feet on center in accordance with Figure R403.1.3,Detail 2. Standard requirements of R403.1.6 and R602.11.1 shall apply. hooks shall comply with Section R608.5.4.5. Steel reinforcement in concrete cast against the earth shall have a 43.FOOTING DEPTH: IRC Section R403.1.4,R403.1.3.4 minimum cover of 3 inches.Exterior footings shall be placed Exterior footings shall be placed not less than 12 inches not less than 12 inches(305 mm)below the undisturbed below the undisturbed ground surface.Where applicable,the depth of footings shall also conform to Section ground surface.Where applicable,the depth of footings shall also conform to Section R403.1.4.1 The vertical bar shall be R403.1.4.1.Deck footings shall be in accordance with Section R507.3.In Seismic Design Categories Do,D,and Dz,interior tied in place at inspection.As a minimum standard.See attached handouts. footings supporting bearing walls or braced wall panels,and cast monolithically with a slab on grade,shall extend to a 41.FOIJNDATION WALL SIZE:IRC R404, Concrete depth of not less than 12 inches below the top of the slab. foundation walls shall be selected and constructed in 44. OUNDATION ANCHORAGE: IRC Section 403.1.6, accordance with the provisions of Section R404.1.3 In R602.11.Wood sole plates at all exterior walls on monolithic buildings assigned to Seismic Design Category Do,D,or Dz, as established in Table R301.2,concrete foundation walls that slabs,wood sole plates of braced wall panels at building support light-frame walls shall comply with this section,and interiors on monolithic slabs and all wood sill plates shall be concrete foundation walls that support above-grade concrete anchored to the foundation with minimum 1/2-inch-diameter walls shall comply with ACI 318,ACI 332 or PCA anchor bolts spaced not greater than 6 feet on center 100(see Section R404.1.3).In addition to the horizontal or approved anchors or anchor straps spaced as-required to reinforcement required by Table R404.1.2(1),plain concrete provide equivalent anchorage to 1/2-inch-diameter anchor walls supporting light-frame walls shall comply with the bolts.Bolts shall extend not less than 7 inches into concrete or following: grouted cells of concrete masonry units.The bolts shall be 1.Wall height shall not exceed 8 feet(2438 mm). located in the middle third of the width of the plate.A nut and 2.Unbalanced backfill height shall not exceed 4 feet. washer shall be tightened on each anchor bolt.There shall be 3.Minimum thickness for plain concrete foundation walls not fewer than two bolts per plate section with one bolt shall be 7.5 inches except that 6 inches is permitted where located not more than 12 inches or less than seven bolt the maximum wall height is 4 feet 6 inches. diameters from each end of the plate section.Interior bearing Foundation walls less than 7.5 inches in thickness,supporting wall sole plates on monolithic slab foundation that are not part more than 4 feet of unbalanced backfill or exceeding 8 feet in of a braced wall panel shall be positively anchored height shall be provided with horizontal reinforcement in with approved fasteners. Sill plates and sole plates shall be accordance with Table R404.1.2(1),and vertical reinforcement protected against decay and termites where required in accordance with Table by Sections R317 and R318.Anchor bolts shall be permitted R404.1.2(2),R404.1.2(3),R404.1.2(4),R404.1.2(5),R404.1.2 to be located while concrete is still plastic and before it has (6),R404.1.2(7)or R404.1.2(8).Where Tables set.Where anchor bolts resist placement or the consolidation R404.1.2(2)through R404.1.2(8)permit plain concrete walls, of concrete around anchor bolts is impeded,the concrete shall not less than No.4(No. 13)vertical bars at a spacing not be vibrated to ensure full contact between the anchor bolts and exceeding 48 inches shall be provided. concrete. Exceptions: 13 1.Walls 24 inches(610 mm)total length or shorter connecting parging applied to the exterior of the wall.The parging shall be offset braced wall panels shall be anchored to the foundation dampproof in accordance with one of the following: 1. with not fewer than one anchor bolt located in the center third of Bituminous coating.2.Three pounds per square yard of acrylic the plate section and shall be attached to adjacent braced wall modified cement.3.One-eighth inch coat of surface-bonding panels at corners as shown in Item 9 of Table R602.3(1). cement complying with ASTM C887.4.Any material 2.Connection of walls 12 inches(305 mm)total length or shorter permitted for waterproofing in Section R406.2. connecting offset braced wall panels to the foundation without anchor bolts shall be permitted. The wall shall be attached to 5.0ther approved methods or materials.Exception:Parging of adjacent braced wall panels at corners as shown in Item 9 unit masonry walls is not required where a material is approved for of Table R602.3(1). direct application to the masonry. In addition to the these requirements the following Concrete walls shall be dampproofed by applying any one of requirements shall apply to wood light-frame structures in the listed dainpproofmg materials or any one of the Mason County(Seismic Design D2). waterproofing materials listed in Section R406.2 to the exterior of the wall. 1.Plate washers conforming to Section R602.11.1 shall be provided for all anchor bolts over the fall length of 46.FOUNDATION DRAINAGE: IRC Section R401.3, required braced wall lines except where approved anchor R405. Surface drainage shall be diverted to a storm sewer straps are used.Properly sized cut washers shall be conveyance or other approved point of collection that does not permitted for anchor bolts in wall lines not create a hazard. Lots shall be graded to drain surface water containing braced wall panels.Plate washers,not less away from foundation walls. The grade shall fall not fewer than 0.229 inch(1/4")by 3 inches by 3 inches in size, than 6 inches within the first 10 feet. Exception: Where lot shall be provided between the foundation sill plate and the lines, walls, slopes, or other physical barriers prohibit 6" of nut except where approved anchor straps are used. The fall within 10' drains or swales shall be provided to ensure hole in the plate washer is permitted to be diagonally drainage away from the structure. Impervious surfaces within slotted with a width of up to 3/16 inch(5 min)larger than 10-ft of the building foundation shall be sloped a min. 2% the bolt diameter and a slot length not to exceed away from the building. V/4 inches(44 min),provided a standard cut washer is Drains shall be provided around all concrete or masonry placed between the plate washer and the nut. foundations that retain earth and enclose habitable spaces 2.Interior braced wall plates shall have anchor bolts located below grade. Drainage tiles, gravel, or crushed stone spaced at not more than 6 feet(1829 mm)on center and drains,perforated pipe or other approved systems or materials located within 12 inches(305 min)of the ends of each shall be installed at or below the area to be protected and shall plate section where supported on a continuous foundation. discharge by gravity or mechanical means into an approved 3.Interior bearing wall sole plates shall have anchor bolts drainage system. Gravel or crushed stone drains shall extend spaced at not more than 6 feet(1829 mm)on center and not less than 1-foot beyond the outside edge of the footing and located within 12 inches(305 min)of the ends of each 6 inches above the top of the footing and be covered with an approved filter membrane material. The top of open joints of plate section where supported on a continuous foundation. drain tiles shall be protected with strips of building paper. 4.The maximum anchor bolt spacing shall be 4 feet for Drainage tiles or perforated pipe shall be placed on not less buildings over two stories in height. than 2 inches of washed gravel or crushed rock not less than 5. Stepped cripple walls shall conform to Section one sieve larger than the file joint opening or perforation and R602.11.2. covered with not less than 6 inches of the same material. 6.Where continuous wood foundations in accordance with Section R404.2 are used,the force transfer shall have 47.FOOTING/PIERS ON OR ADJACENT TO SLOPES: a capacity equal to or greater than the connections IRC Section 403.1.7. The placement of buildings and required by Section R602.11.1 or the braced wall structures on or adjacent to slopes steeper than 1 unit vertical panel shall be connected to the wood foundations in in 3 units horizontal(3 3.3=percent slope)shall conform to accordance with the braced wall panel-to-floor fastening Sections R403.1.7.1 through R403.1.7.4.Buildings below requirements of Table R602.3. slopes shall be set a sufficient distance from the slope to provide protection from slope drainage,erosion,and shallow 45.DAMP-PROOF FOUNDATION WALLS: IRC Section failures. Where the existing slope is steeper than one unit R406.Except where required by section R406.2 to be vertical in one unit horizontal(100% slope),the toe of the waterproofed,foundation walls that retain earth and enclose slope shall be assumed to be at the intersection of the interior or usable spaces located below grade shall be horizontal plane drawn from the top of the foundation and a dampproofed from(a)the top of the footing or(b)6 inches plane drawn tangent to the slope at an angle 45 degrees to the below the top of the basement floor,to the finished grade. horizontal. Where a retaining wall is constructed at the toe of R406.2:Except where required by Section R406.2 to be the slope,the height of the slope shall be measured from the waterproofed,foundation walls that retain earth and enclose top of the wall to the top of the slope. Footings on or adjacent interior spaces and floors below grade shall be dampproofed to slopes shall be founded in material with an embedment and from the finished grade to the higher of the top of the footing setback from the slope surface to provide vertical and lateral or 6 inches below the top of the basement floor.Masonry walls support for the footing without detrimental settlement.Except shall have not less than 3/8-inch(9.5 mm)Portland cement as provided for in Section R403.1.7.4 and Figure R403.1.7.1, 14 the following setback is deemed adequate to meet the criteria. N: Where the slope is steeper than one unit vertical in one unit 50.�NDER FLOOR VENTILATIO WAC amendment horizontal(100%slope),the required setback shall be to IRC Section R408.1 and R408.2. The under-floor space measured from an imaginary plane 45 degrees to the between the bottom of the floor joists and the earth under any horizontal,projected upward from the toe of the slope. On building (except space occupied by a basement) shall be graded sites,the top of an exterior foundation shall extend provided with ventilation openings through foundation walls or above the elevation of the street gutter at point of discharge or exterior walls having a net area of not less than 1 square foot the inlet of an approved drainage device not less than 12 for each 300 square feet of under-floor space area.In addition, inches plus 2 percent.Alternate elevations are permitted a ground cover of 6 mil polyethylene or approved equal shall subject to the approval of the building official,provided that it be laid over the ground within crawl spaces.The ground cover can be demonstrated that required drainage to the point of shall be overlapped six inches minimum at the joints and shall discharge and away from the structure is provided at all extend to the foundation wall. Exception: The ground cover locations on the site. may be omitted in crawl spaces if the crawl space has a concrete slab floor with minimum thickness of two inches. One 48.FOUNDATION SUPPORT FOR BRACED WALL ventilating opening shall be within 3-feet of each comer of the PANEL CRIPPLE WALL BRACING• IRC Definition building, except one side of the building shall be permitted to Sections R60 o R602 i n 9 1 R602.10.IL One story have no ventilation openings. Ventilation openings shall be covered for their height and width with any of the following buildings in seismic design category D2 shall be supported on materials rovided that the least dimension of the covering continuous foundations at intervals not to exceed 50-ft. In p two-story buildings ALL interior braced wall panels shall shall not exceed'/a": be supported by continuous foundation.Foundation cripple 1) perforated sheet metal plates not less than.070"thick,2) walls shall be framed of studs not smaller than the studding Expanded sheet metal plates not less than .047"thick,3) Cast above.When exceeding 4 feet in height,such walls shall be iron grills or grating,4)Extruded load-bearing brick vents,5) framed of stud having the size required for an additional story. Hardware cloth of.03 5 wire or heavier,6) Corrosion- Cripple walls supporting bearing walls or exterior walls or resistant wire mesh,with the least dimension being 1/8". See interior braced wall panels as required in Section R403.12 and exceptions for additional options. R602.10.9.1 with a stud height less than 14 inches shall be S1.PROTE TION OF WOOD AND continuously sheathed on one side with wood structural panels WOOD-BASED PRODUCTS AGAINST DECAY fastened to both the top and bottom plates in accordance with Table R602.3(l)or the cripple walls shall be constructed of IRC Section R317.1.2&R407.3.All wood in contact with the solid blocking.All cripple walls footings or foundation. ground, embedded in concrete in direct contact with the Exception:Footing supporting cripple walls used to support ground or embedded in concrete exposed to the weather that interior braced wall panels as required in Section R403.1.2 supports permanent structures intended for human occupancy and R602.10.0.1 shall be continuous for the required length of shall be approved pressure-preservative-treated wood suitable for ground contact use,except that untreated wood used the cripple wall and constructed beyond the cripple wall for minimum distance of 4 inches and maximum distance of the entirely below groundwater level or continuously submerged in fresh water shall not be required to be pressure- footing thickness. The footing extension is not required at preservative treated.Protection of wood and wood-based intersections with other footings.Cripple walls are defined as products from decay shall be provided in the following the framed wall extending from the top of the foundation to locations by the use of naturally durable wood or wood that the underside of the floor framing of the story above.Cripple is preservative-treated in accordance with AWPA Ul. walls below brace walls shall be constructed with wood structural panels with the length and method specified in 1.In crawl spaces or unexcavated areas located within the Table R602.10.3(3)and R602.10.3(4). Adhesive attachment periphery of the building foundation,wood joists or the of wall sheathing shall not be permitted in Seismic Design bottom of a wood structural floor where closer than 18 Categories D2. inches to exposed ground,wood girders where closer than 12 inches to exposed ground, and wood columns where 49. B-TMNF,v FOUNDATION OUNfI A TION&SEISMIC closer than 8 inches to exposed ground. �'nllvii�i.i ■ RE_INFOR IC_._N_G:IRC Sections 1001,R1001.2,When an 2.Wood framing members,including columns,that rest approved design is not provided,footings for masonry and directly on concrete or masonry exterior foundation walls concrete fireplaces and their chimneys shall be constructed of and are less than 8 inches from the exposed ground. concrete or solid masonry not less than 12" thick and shall not 3. Sills and sleepers on a concrete or masonry slab that is extend 6-inches beyond the face of the fireplace or foundation in direct contact with the ground unless separated from wall on all sides. Footings shall be founded on natural, such slab by an impervious moisture barrier. undisturbed earth or engineered fill below the frost depth,at 4.The ends of wood girders entering exterior masonry or least 12"below finished grade.Masonry or concrete chimneys concrete walls having clearances of less than 1/2 inch on shall be anchored at each floor,ceiling,or roof line more than tops,sides and ends. 6-ft.above grade,except were constructed completely within 5.Wood siding,sheathing and wall framing on the the exterior walls. Unless designed otherwise,masonry and exterior of a building having a clearance of less than 6 concrete chimneys shall be reinforced and anchored in inches from the ground or less than 2 inches measured accordance with Chapter 1001. 15 vertically from concrete steps,porch slabs,patio slabs 54.POST-BEAM CONNECTIONS/FASTENING: IRC and similar horizontal surfaces exposed to the weather. Section R502.9,R301.1,R602.3(l). Where post and beam or 6.Wood structural members supporting moisture- girder construction is used to support floor framing,positive permeable floors or roofs that are exposed to the weather, connections shall be provided to ensure against uplift and such as concrete or masonry slabs,unless separated from lateral displacement. The construction of buildings and such floors or roofs by an impervious moisture barrier. structures shall result in a system that provides a complete load 7. Wood furring strips or other wood framing members path that meets all requirements for the transfer of all loads attached directly to the interior of exterior masonry walls from their point of origin through their load resisting elements or concrete walls below grade except where to the foundation.Columns shall be restrained to prevent an approved vapor retarder is applied between the wall lateral displacement at the bottom end. Wood columns shall and the furring strips or framing members. not be less in nominal size than 4"x 4"or approved 8.Portions of wood structural members that form the equivalent. structural supports of buildings,balconies,porches,or 55.SEE ITEM 52. similar permanent building appurtenances where those members are exposed to the weather without adequate protection from a roof,cave, overhang,or other covering 56.FLOOR FRAMING: IRC Chapter 5,Section R502.6, that would prevent moisture or water accumulation on the R502.7,The ends of each joist,beam or girder shall have not surface or at joints between members.Exception:Sawn less than 1-1/2"bearing on wood or metal, h a v e not less than lumber used in buildings located in a geographical region 3"on masonry or concrete except where supported by where experience has demonstrated that climatic conditions approved joint hangers.Alternatively,the ends of joists shall preclude the need to use naturally durable orpreservative- be supported on a 1-inch by 4-inch ribbon strip and shall be treated wood where the structure is exposed to the weather. nailed to the adjacent stud.The bearing on masonry or 9.Wood columns in contact with basement floor slabs concrete shall be direct,or a sill plate of 2-inch-minimum unless supported by concrete piers or metal pedestals nominal thickness shall be provided under the joist,beam,or projecting not less than 1 inch above the concrete floor girder.Joist framing from opposite sides of a beam or partition and separated from the concrete pier by an impervious shall lap a minimum of 3"and shall be nailed together with moisture barrier. three 1 Od-face nails.A wood or metal splice with strength Field-cut ends,notches and drilled holes of preservative- equal to or greater than that provided by the nailed lap is treated wood shall be treated in the field in accordance permitted.Joists framing into the side of a wood girder shall with AWPA M. be supported by approved framing anchors or on ledger strips not less than 2-inches x 2-inches.Joists shall be supported 52.PRESSURE-PRESERVATIVE-TREATED wood shall laterally at the ends and at each intermediate support by full bear the quality mark of an approved agency in accordance depth solid blocking not less than 2"nominal thickness;or by with R317.2. attachment to a full-depth header,band,or rim joist,or to an Lumber and plywood required to be pressure-preservative adjoining stud;or shall be otherwise provided with lateral treated in accordance with Section R318.1 shall bear the support to prevent rotation.Exception:1)Trusses,structural quality mark of an approved inspection agency that maintains composite lumber,structural glued-laminated member, and I-Joist continuing supervision,testing and inspection over the quality shall be supported laterally as required by the manufacture's of the product and that has been approved by an accreditation recommendations.2)In a D2 seismic design category lateral body that complies with the requirements of the American restraint shall be provided at each intermediate support. (Note: Lumber Standard Committee treated wood program. Mason County is a D2 seismic area) Joists exceeding a nominal 2"x 12"shall be supported 53.FASTENERS: Fasteners for pressure preservative and laterally by solid blocking,diagonal bridging(wood or metal), fasteners for pressure-preservative and fire-retardant- treated or a continuous 1"x 3"strip nailed across the bottom of joists wood shall be of hot-dipped zinc-coated galvanized steel, perpendicular to joists at intervals not exceeding 8'0". See stainless steel,silicon bronze or copper. The coating weights Figure R502.2 for floor framing information and Tables for zinc-coated fasteners shall be in accordance with 502.3.1(1),R502.3.1(2), R502.3.3(1)and R502.3.3(2)for manufacturer recommendations or in accordance with ASTM allowable spans. Structural floor members shall not be cut, A653 type G185. See also manufacturer specifications or bored,or notched in excess of Section R502.8.Notches: in distributor specific installation instructions or solid lumber joists,rafters and beams shall not exceed 1/6 of recommendations. the depth of the member,shall not be longer than 1/3 of the Exception: 1) %"diameter or larger steel bolts(where required by depth of the member and shall not be located in the middle 1/3 location). 2)Fasteners other than nails and timber rivets shall be of the span.Notches at the ends of the member shall not permitted to be mechanically deposited zinc-coated steel with exceed 1/4 the depth of the member. The tension side of coating weights in accordance with ASTMB 695, Class 55, members 4 inches or greater in nominal thickness shall not be minimum.3.Plain carbon steel fasteners in SBXIDOT and zinc borate notched except at the ends of the members.The diameter of preservative-treated wood in an interior,dry environment shall be holes bored or cut into members shall not exceed 1/3 the depth permitted Sill plate need not be pressure treated if sill plate of the member. Holes shall not be closer than 2 inches to the installed over an approved moisture barrier such as 30 lb.Felt top or bottom of the member,or to any other hole located in or equivalent and the sill plate is 8"or more above grade. the member.Where the member is also notched,the hole shall 16 loads are less than or equal to 25 pounds per square foot, and the not be closer than 2 inches to the notch.Engineered wood ultimate wind speed is less than or equal to 130 mph,2x6 studs products: Cuts,notches and holes bored in trusses,structural composite lumber,structural glue-laminated members or I- supporting a roof load with not more than 6 feet of tributary length shall have a maximum height of 18 feet where spaced at 16 inches on joists are prohibited except where permitted by the manufacturer's recommendations or where the effects of such center, or 20 feet where spaced at 12 inches on center.Stud shall be a minimum No.2 grade lumber. 3)Exterior load-bearing studs not alterations are specifically considered in the design of the exceeding 12 feet(3658 mm)in height provided in accordance with member by a registered design professional. Floor framing Table R602.3(6). The minimum number offull-height studs adjacent shall be Fastened in accordance with Table R602.3(1) to openings shall be in accordance with Section R602.7.5. The Fastening Schedule.Posts and beams used to support floor building shall be located in Exposure B, the roof live load shall not framing shall be provided with positive connections to ensure exceed 20 psf(0.96 kPa), and the ground snow load shall not against uplift and lateral displacement.Floor assemblies, exceed 30 psf(1.4 kPa).Studs and plates shall be No. 2 grade where the space below is used for storage or fuel-fired lumber or better.In accordance with Table R602.3.I. Studs shall appliances shall be protected from be placed with their wide dimension perpendicular to the fire in accordance with R302.13.Exception: Wood floor assemblies using dimension wall. Wood stud walls shall be capped with a double top plate installed to provide overlapping at corners and intersections lumber or structural composite lumber with a cross sectional area equal to or greater than 2-inch by 10-inch(50.8 mm by with bearing partitions. End joints in top plates shall be offset 254 mm) nominal dimension, or other approved floor not less than 24". Joints in plates need not occur over studs.assemblies demonstrating equivalent fire performance_ plates shall be a nominal 2"in depth and have a width at least equal to the width of studs.Where joists,trusses,or rafters are 57.TOISTS UNDER BEARING PARTITIONS•IRC spaced more than 16"o.c.and the bearing studs are spaced 24"o.c. such members shall bear within 5"of the studs Section R502.4.Joists under parallel bearing partitions shall beneath. Studs shall have full bearing on a 2-inch nominal or be of adequate size to support the load. Double joists,sized to adequately support the load,that are separated to permit the larger plate or sill having a width at least equal to the width of installation of piping or vents shall be full depth solid blocked the studs. with lumber not less than 2"in nominal thickness spaced Drilling¬ching—studs(R602.6): Notching: Any stud not more than 4' O.C. Bearing partitions perpendicular to in an exterior wall or bearing partition may be cut or notched joists shall not be offset from supporting girders,walls,or to a depth not exceeding 25%of the stud width. Studs in non- partitions more than the joist depth unless joists are of bearing partitions may be notched to a depth not to exceed sufficient size to carry the additional load. 40%of a single stud width. Drilling:Any stud may be bored or drilled,provided that the diameter of the resulting hole is not 58.IJNTDER FLOOR CLEARANCE t REMOVAL OF more than 60%of the stud width,the edge of the hole is no DEB RI IRC Section,R408.5. The under-floor grade shall closer than 5/8 of an inch to the edge of the stud,and the hole be cleaned of all vegetation and organic material.All wood is not located in the same section as a cut or notch. Studs forms used for placing concrete and construction materials located in exterior walls or bearing partitions drilled over 40% shall be removed before the building is occupied or used for and successive doubl to 60% ed studs bored(Sll be doubled ee no more ure R 0 6(1)and any purpose. R602.6(2). Exception: Use of approved stud shoes is 59 NDER-FLOOR ACCESS: IRC Section R408.4, permitted when they are installed in accordance with the M1305.1.4.Access shall be provided to all under-floor spaces. manufacturer's recommendations and R602.6 for additional Access openings through the floor shall be a minimum of 18" details. Drilling and notching of top plate:Where piping or x 24". Openings through a perimeter wall shall be at least ductwork is placed in or partly in an exterior wall or interior 16"x 24".When any portion of the through wall access is load bearing wall,necessitating cutting,drilling or notching of below grade,an areaway not less than 16"x 24"shall be the top plate by more than 50%of its width,a galvanized metal provided. The bottom of the areaway shall be below the tie of not less than.054-inch thick and 1'/2 inches wide shall be threshold of the access opening.Through wall access fastened across the plate at each side of the opening with not openings shall not be located under a door to the residence. less than 8-1 Od nails at each side having a min.length of V/2" Where appliances are located under floors a rough-framed each side or equivalent.The metal tie must extend a min. of 6" access shall be provided with an opening or door and an past the opening. (See figure R602.6.1). Foundation cripple unobstructed passageway not less than 22 inches wide and walls(WAC R602.9)shall be framed of studs no less in size large enough to allow the removal of the largest appliance in than the studding above.When exceeding 4'0 feet in height, the space.Access shall be unobstructed by pipes, ducts or such walls shall be framed of studs having the size required similar construction. for an additional story.Cripple walls supporting bearing walls or exterior walls or interior braced wall panels as required in 60.WALL FRAMING: IRC Section R602 including Section R403.1.2 and R602.10.9.1 with a stud height less than R602.3.1,R602.3.2,R602.3.3,R 602.3.4,R602.6 & R602.9. 14 inches shall be continuously sheathed on at least one side The size,height and spacing of studs shall be in accordance with a wood structural panel that is fastened to both the top and with Table R602.3(5).Exception: 1) Utility grade studs shall not be bottom plates in accordance with Table R602.3(1) or the spaced more than 16"on center,support more than a roof and cripple walls shall be constructed of solid blocking.All cripple ceiling,and shall not exceed 8 feetin height for exterior and load walls shall be supported on continuous foundations. bearing walls or IO'for interior non-bearing walls. 2) Where snow Exception:Footings supporting cripple walls used to support 17 interior braced wall panels as required in Sections R403.1.2 and R602.10.9.1 shall be continuous for the required length of In one-story buildings, braced wall panels shall be supported on continuous foundations at intervals not the cripple wall and constructed beyond the cripple wall for a exceeding 50'. In two-story buildings all interior braced wall. min. distance of 4 inches and a maximum distance of the panels shall be supported on continuous foundations. footing thickness. The footings extension is not required at intersections with other footings. • Brace wall panels shall be fastened to required foundations in accordance with R602.10.8.1 & R602.10.8.2. See Figure 61.WALL BRACING: IRC 602.10.Mason County is R602.10.8(1),Figure R602.10.8(2),R602.10.8.2(1), located in Seismic Design Category(SDC)D2.All braced R602.8.2.(2)&Figure R602.10.8(3). See Attached walls and cripple wall bracing in Seismic Design Category D2 shall be constructed in accordance with IRC Tables •Continuous sheathing methods require structural panel R602.10.1.3(1),(2),(3)&(4)and Sections R602.10 and sheathing to be used on all sheathable surfaces on one side of R602.11. a braced wall line including areas above and below openings • Minimum number of braced wall panels.Braced wall lines and gable end walls and shall meet the requirements of with a length of 16 feet or less shall have not less than two Section R602.10.7. braced wall panels of any length or one braced wall panel equal to 48 inches or more.Braced wall lines greater than 16 •Cripple walls Foundation cripple walls shall be framed of feet shall have not less than two braced wall panels. studs not smaller than the studding above.When exceeding 4 • Standard braced wall panels require nailing patterns of 6" feet in height,such walls shall be framed of studs having the o.c.along all panel edges and 12"in the field.All sheathing size required for an additional story. joints must be over studs(vertically)or solid block of min. 1 •Cripple walls supporting bearing walls or exterior walls or '/z inches thickness,at joints(horizontally). interior braced wall panels as required in Sections R403.1.2 • R602.10.2.2.1 Braced wall panels shall be located at each and R602.10.9.1 with a stud height less than 14 inches shall be end of a braced wall line. continuously sheathed on one side with wood structural panels Exceptions: fastened to both the top and bottom plates in accordance with I.Braced wall panels constructed of Method WSP or BY-WSP and Table R602.3(1),or the cripple walls shall be constructed of continuous sheathing methods as specified in Section R602.10.4 solid blocking.All cripple walls shall be supported on shall be permitted to begin not more than 10 feet from each end of continuous footings or foundations. a braced wall line provided that each end complies with one of the Exception: Footings supporting cripple walls used to support following: interior braced wall panels as required in Sections R403.1.2 and R602.10.9.I shall be continuous for the required length of 1.LA minimum 24-inch-wide panel for Methods WSP, CS- the cripple wall and constructed beyond the cripple wall for a WSP, CS-G and CS-PF is applied to each side of the minimum distance of 4 inches and a maximum distance of the building corner as shown in End Condition 4 of Figure footing thickness. The footings extension is not required at R602.10.7. intersections with other footings. 1.2. The end of each braced wall panel closest to the end of • Where "stepped foundations" occur, See IRC the braced wall line shall have an 1,800 pound (8 klV) R602.11.2 for additional requirements such as plate hold-down device fastened to the stud at the edge of the strapping,cripple wall height limitations,etc. braced wall panel closest to the corner and to the foundation or framing below as shown in End Condition 5 • Adhesive attachment is not permitted. of Figure R602.10.7. • 1st floor braced panels supported by double joists, 2.Braced wall panels constructed of Method PFH or ABW; continuous blocking,or floor beams. (R602.10.8.) or of Method BVWSP where a hold-down is provided in accordance with Table R602.10.6.5.4, shall be permitted to 62.OPENINGS IN EXTERIOR&INTERIOR WALLS begin not more than 10 feet from each end of a braced wall (READERS):IRC Section R602.7,R502.5 &R502.6. line. Headers shall be provided over each opening in exterior- Spacing of interior braced wall lines shall not bearing walls. Headers shall be of two pieces of nominal 2- exceed 25' apart.An increase up to 35' apart for a inch framing lumber set on edge as permitted in tables single room within the structure is not to exceed 900 R602.7(1)and R602.7(2)and nailed together in accordance sq. ft., is permitted provided the braced wall length is with Table R602.3(1)or of solid lumber of equivalent size. adjusted in accordance with IRC Table R602.10.3(4). Exterior headers not listed in the tables shall be designed to (Ref Table R602.10.1.3) support the loads specified in Table R3 01.5.The ends of each joist,beam or girder shall not have less than 1'/Z inches of •Each braced wall line shall be located such that no more than bearing wood or metal,have not less than 3 inches of bearing two-thirds of the required braced wall panel length is located to on masonry or concrete or be supported by approved joist one side of the braced wall line.Braced wall panels shall be hangers.A single flat 2"x4"member shall be permitted as a permitted to be offset up to 4 feet from the designated braced header in interior or exterior nonbearing walls for openings up wall line.Braced wall panels parallel to a braced wall line shall to 8-ft in width if the vertical distance to the parallel nailing be offset not more than 4 feet from the designated braced wall surface above is not more than 24-inchesHeaders shall be line location as shown in Figure R602.10.1.1. supported on each end with one or more jack studs or with 18 e with Table R602.7(1) The integrity of fireblocks shall be maintained. approved framing anchors in accordanc or R602.7(2).The full-height stud adjacent to each end of the DRAFTSTOPPING R302.12:_In combustible construction header shall be end-nailed to each end of the header in where there is usable space both above and below the accordance with Table R602.3(1).The minimum number of concealed space of a floor-ceiling assembly,draftstops shall full-height studs at each end of a header shall be in accordance be installed so that the area of the concealed space does not with Table R602.7.5. exceed 1,000 square feet(92.9 m2).Draftstopping shall divide Tr �-DRAFTSTOPPING:IRC the concealed space into approximately equal areas.Where the 63 FIREBLOCKIl\.T�y assembly is enclosed by a floor membrane above and a ceiling R302.11,R302.12,R1001.12,R1003.19. membrane below,draftstopping shall be provided in floor- FIREBLOCKING shall be installed to cut off both horizontal ceiling assemblies under the following circumstances: and vertical concealed draft openings and to form an effective LCeiling is suspended under the floor framing. fire barrier between stories,and between a top story and the 2.Floor framing is constructed of truss-type open-web or roof space.Fire-blocking shall be provided in wood-frame construction in the following locations: 1)In concealed perforated members. spaces of stud walls and partitions,including furred spaces Draftstopping materials shall be not less than 1/2-inch(12.7 and parallel rows of studs or staggered studs,as follows: a) mm)gypsum board,3/8-inch(9.5 mm)wood structural panels Vertically at the ceiling and floor levels.b)Horizontally at or other approved materials adequately supported. intervals not exceeding 10 feet. 2)At all interconnections Draftstopping shall be installed parallel to the floor framing between concealed vertical and horizontal spaces such as members unless otherwise approved by the building official. occur at soffits,drop ceilings,and cove ceilings.3)In The integrity of the draftstops shall be maintained. concealed spaces at stair stringers at the top and bottom of the run. Enclosed spaces under stairs shall comply with Section FIRE PROTECTION OF FLOORS:Floor assemblies that R302.7.4)At openings around vents,pipes and ducts, cables are not required elsewhere h this code to be fire-resistance and wires at ceiling and floor level,with an approved material rated,shall be provided with a 1/2-inch woo structural gypsum to resist the free passage of flame and products of combustion. wallboard membrane,5/8-inch(16 mm)wood structural panel The material filling this annular space shall not be required to membrane,or equivalent on the underside of the floor framing meet the ASTM E136 requirements.5)For the fire-blocking of member.Penetrations or openings for ducts,vets,electrical chimneys and fireplaces,see Section R1003.19. 6) Fire- outlets,lighting,anedlces,luminaires,wires,similar openings or penetrations shall be blocking of cornices of a two-family dwelling is required at drainage,piping the line of dwelling unit separation.Fire blocking materials permitted.Exceptions: 1.Floor assemblies located directly over a space protected by an shall consist of the following material.Except as provided in automatic sprinkler system in accordance with Appendix AWU Section R302.11,Item 4, NFPA 13D, or other approved equivalent sprinkler system. 1.Two-inch nominal lumber. 2.Floor assemblies located directly over a crawl space not intended 2.Two thicknesses of 1-inch nominal lumber with broken lap for storage or fuel-fired appliances. joints. 3.Portions of floor assemblies shall be permitted to be unprotected 3.One thickness of 23/32-inch wood structural panels with where complying with the following: joints backed by 23/32-inch wood structural panels. 3.1. The aggregate area of the unprotected portions does not 4.One thickness of 3/4-inch particleboard with joints backed by exceed 80 square feet(7.4 m2)per story. 3/4-inch particleboard. 3.2.Fireblocking in accordance with Section R302.11.1 is installed along the perimeter of the unprotected portion to S.One-half inch gypsum board. separate the unprotected portion from the remainder of the floor 6.0ne-quarter inch cement-based millboard. assembly. 7.Batts or blankets of mineral wool or glass fiber or other 4.Wood floor assemblies using dimension lumber or structural approved materials installed in such a manner as to be securely composite lumber with a cross sectional area equal to or greater retained in place. than 2-inch by 10-inch(50.8 mm by 254 mm)nominal dimension, or other approved floor assemblies demonstrating equivalent f re 8.Cellulose insulation installed as tested in accordance with performance. ASTM El 19 or UL 263,for the specific application. CHIMNEY FIREBLOCKING_All spaces between Batts or blankets of mineral er glass fiber or other approved chimneys and floors and ceilings through which chimneys nonrigid materials shall be permitted for compliance with the pass shall be fire-blocked with noncombustible material 10-foot horizontal fireblocking in walls constructed using securely fastened in place.The fire-blocking of spaces parallel rows of studs or staggered studs.Unfaced fiberglass between chimneys and wood joists,beams,or headers shall be batt insulation used as fireblocking shall fill the entire cross self-supporting or be placed on strips of metal or metal lath section of the wall cavity to a height of not less than 16 inches laid across the spaces between combustible material and the measured vertically.Where piping,conduit or similar chimney. obstructions are encountered,the insulation shall be packed tightly around the obstruction.Loose-fill insulation material 64.1a x T ERiv�c TAT .-COVERINGR, ATTAC LAMENTS:IRC shall not be used as a fireblock unless specifically tested in the Section R701.2,703.1-703.11.Exterior walls shall provide the form and manner intended for use to demonstrate its ability to building with a weather-resistant exterior wall envelope. remain in place and to retard the spread of fire and hot gases.- 19 Products sensitive to adverse weather shall not be installed water that enters the assembly to the exterior.Protection until adequate weather protection for the installation is against condensation in the exterior wall assembly shall be provided.The exterior sheathing shall be dry before applying provided in accordance with Section R702.7 of this code. exterior cover.Exception:Log walls designed and constructed Exceptions:LA weather-resistant exterior wall envelope shall in accordance with the provisions of ICC 400. The exterior not be required over concrete,or masonry walls designed in wall envelope shall include flashing as described in Section accordance with Chapter 6 and flashed in accordance R703.8.The exterior wall envelope shall be designed and with Section R703.4 or R703.8. constructed in a manner that prevents accumulation of water 2.Compliance with the requirements for a means ofdrainage,and within the wall assembly by providing a water-resistant barrier the requirements of Sections R703.2 and R703.4,shall not be behind the exterior veneer,as specified R703.2,and a means required for an exterior wall envelope that has beendemonstrated to resist wind-driven rain through testing of the draining water that enters the assembly to the exterior. exterior wall envelope,includingjoints,penetrations and Protection against condensation in the exterior wall assembly intersections with dissimilar materials, in accordance with ASTM shall be provided in accordance with Section R702.7.The E331 under the following conditions: requirement for a means of drainage shall not be construed to 2.1.Exterior wall envelope test assemblies shall include at mean an air space cavity under the exterior cladding for an least one opening,one control joint,one wall/eave interface exterior wall clad with panel or lapped siding made of and one wall sill.All tested openings and penetrations shall plywood,engineered wood,hardboard,or fiber cement.A be representative of the intended end-use cor figuration. water-resistive barrier as required by Section R703.2 will be 2.2.Exterior wall envelope test assemblies shall be at least required on exterior walls.Protection against condensation in 4 feet by 8 feet(1219 mm by 2438 mm)in size. the exterior wall assembly shall be provided in accordance 2.3.Exterior wall assemblies shall be tested at a minimum with section R702.7 of this code and the Washington State differential pressure of 6.24 pounds per square foot(299 Energy Code(WSEC)as described in item#95. Exterior wall Pa).2.4.Exterior wall envelope assemblies shall be subjected to coverings and roof overhangs shall be securely fastened with the minimum test exposure for a minimum oft hours. aluminum,galvanized,stainless steel or rust-preventative 3. The requirement for a means of drainage shall not be coated nails or staples in accordance with Table R703.3(1)or construed to mean an air space cavity under the exterior cladding with other approved corrosion-resistance fasteners in for an exterior wall clad with panel or lapped siding made of accordance with the wall coverings manufacturer's plywood engineered wood hardboard or fiber cement.A water- installation instructions.In accordance with Table R703.3(1) resistive barrier as required by Section R703.2 will be required wood siding may not be less than 3/8"thick;to ensure proper on exterior walls. fastening for type used see Table R703.3(1).Approved The exterior wall envelope design shall be considered to resist corrosion-resistant fasteners shall be provided in the exterior wind-driven rain where the results of testing indicate that water wall envelope in such a manner as to prevent entry of water did not penetrate control joints in the exterior wall envelope, into the wall cavity or penetration of water to the building joints at the perimeter of opening penetration or intersections of structural framing components.Minimum fastener length and terminations with dissimilar materials. penetration shall have the greater of the minimum length specified in Table R703.3(1)or as required to provide a WATER-RESISTIVE BARRIER R703.2 Not fewer than one layer minimum penetration into framing as follows: 1.Fasteners for of water-resistive barrier shall be applied over studs or horizontal aluminum siding,steel siding,particleboard panel sheathing of all exterior walls with flashing as indicated siding,wood structural panel siding in accordance with in Section R703.4,in such a manner as to provide a continuous ANSI/APA-PRP 210,fiber-cement panel siding installed over water-resistive barrier behind the exterior wall veneer.The foam plastic sheathing shall penetrate not less than 1 %2 inches water-resistive barrier material shall be continuous to the top of into framing or shall be in accordance with the manufacturer's walls and terminated at penetrations and building appendages installation instructions.2)Fasteners for hardboard panel and in a manner to meet the requirements of the exterior wall lap siding shall penetrate not less than 1 %inches into framing. envelope as described in Section R703.1.Water-resistive 3)Fasteners for vinyl siding and insulated vinyl siding installed barrier materials shall comply with one of the following: over wood structural panel sheathing shall penetrate not less 1.No. 15 felt complying with ASTM D226,Type 1. than 1 '/,inches into sheathing and framing combined.Vinyl 2ASTM 2556,Type 1 or 2. siding and insulated vinyl siding shall be permitted to be 3.ASTM E331 in accordance with Section R703.1.1. installed with fasteners penetrating or through wood or wood 4.Other approved materials in accordance with the structural sheathing of minimum thickness as specified by the manufacturer's installation instructions. manufacturer's instruction or test report,with or penetration No.15 asphalt felt and water-resistive barriers complying into the framing See Section R703.3.3 for more detail.For with ASTM E2556 shall be applied horizontally,with the information related to masonry and anchored stone wall upper layer lapped over the lower layer not less than 2 inches, coverings. and where joints occur,shall be lapped not less than 6 inches. 65.w ATHER RESISTANT SHEATHING PAPER and WALL COVERING ATTACHMENT.Section R703.3 The nominal FLASHING: IRC Section R703.2 The exterior wall envelope thickness and attachment of exterior wall coverings shall be in shall be designed and constructed in a manner that prevents the accordance with Table R703.3(1),the wall covering material accumulation of water within the wall assembly by providing a requirements of this section,and the wall covering water-resistant barrier behind the exterior veneer as required manufacturer's installation instructions.Cladding attachment by Section R703.2 and a means of draining to the exterior over foam sheathing shall comply with the additional 20 4.Fasteners for vertical or horizontal wood siding shall requirements and limitations of Sections R703.15 through R703.17.Nominal material thicknesses penetrate not less than 11/z inches into studs,studs and in Table R703.3(1)are based on a maximum stud spacing of 16 wood sheathing combined,or blocking. inches on center.Where specified by the siding manufacturer's 5.Fasteners for siding material installed over foam plastic instructions and supported by a test report or other sheathing shall have sufficient length to accommodate documentation,attachment to studs with greater spacing is foam plastic sheathing thickness and to penetrate framing permitted.Fasteners for exterior wall coverings attached to or sheathing and framing combined,as specified in Items 1 wood framing shall be in accordance with Section through 4. R703.3.3 and Table R703.3(1).Exterior wall coverings shall be FLASHING(R703.4):Approved corrosion-resistant flashing attached to cold-formed steel light frame construction in shall be applied shingle-fashion in a manner to prevent entry accordance with the cladding manufacturer's installation of water into the wall cavity or penetration of water to the instructions,the requirements of Table R703.3(1)using screw building structural framing components.Self-adhered fasteners substituted for the nails specified in accordance membranes used as flashing shall comply with AAMA 711. with Table R703.3(2),or an approved design.Fastening of Fluid-applied membranes used as flashing in exterior walls exterior wall coverings and roof overhang soffits shall be shall comply with AAMA 714.The flashing shall extend to securely fastened with aluminum,galvanized,stainless steel or the surface of the exterior wall finish.Approved corrosion rust-preventative coated nails or staples in accordance resistant flashings shall be installed at the following with Table R703.3(1)or with other approved corrosion- locations: resistant fasteners in accordance with the wall covering 1.Exterior window and door openings.Flashing at exterior manufacturer's installation instructions.Nails and staples shall window and door openings shall be installed in accordance comply with ASTM F1667.Nails shall be T-head,modified with Section R703.4.1.2.At the intersection of chimneys or round head,or round head with smooth or deformed shanks. other masonry construction with frame or stucco walls,with Staples shall have a minimum crown width of/16 inch outside projecting lips on both sides under stucco copings. diameter and be manufactured of minimum 16-gage wire. 3.Under and at the ends of masonry,wood or metal copings Where fiberboard,gypsum,or foam plastic sheathing backing and sills.4.Continuously above all projecting wood trim. is used,nails or staples shall be driven into the studs.Where wood or wood structural panel sheathing is used,fasteners shall 5.Where exterior porches,decks or stairs attach to a wall or be driven into studs unless otherwise permitted to be driven floor assembly of wood-frame construction. 6.At wall and into sheathing in accordance with either the siding roof intersections.7.At built-in gutters. manufacturer's installation instructions or Table R703.3.3. Flashing installation at exterior window and door Fasteners shall have the greater of the minimum length openings.R703.4.1 Flashing at exterior window and door specified in Table R703.3(1)or as required to provide a openings shall extend to the surface of the exterior wall finish minimum penetration into framing as follows: or to a water-resistive barrier complying with Section 1.Fasteners for horizontal aluminum siding,steel siding, 703.2 for subsequent drainage.Air sealing shall be installed particleboard panel siding,wood structural panel siding in around all window and door openings on the interior side of accordance with Ar1SUAPA-PRP 210,fiber-cement panel flashln�Kali omply with AA1MA 712ached lashing at exterior siding and fiber-cement lap siding installed over foam window and door openings shall be installed in accordance plastic sheathing shall penetrate not less than 11/z inches with one or more of the following: into framing or shall be in accordance with the manufacturer's installation instructions. 1.The fenestration manufacturer's installation and 2.Fasteners for hardboard panel and lap siding shall flashing instructions,or for applications not addressed in penetrate not less than 11/2inches into framing. the fenestration manufacturer's instructions, in accordance with the flashing manufacturer's instructions. 3.Fasteners for vinyl siding and insulated vinyl siding Where flashing instructions or details are not installed over wood or wood structural panel sheathing provided,pan flashing shall be installed at the sill of shall penetrate not less than 11/4 inches into sheathing and exterior window and door openings.Pan flashing shall framing combined.Vinyl siding and insulated vinyl siding be sealed or sloped in such a manner as to direct water to shall be permitted to be installed with fasteners penetrating the surface of the exterior wall finish or to the water- into or through wood or wood structural sheathing of resistive barrier for subsequent drainage.Openings min nium thickness as specified by the manufacturers using pan flashing shall incorporate flashing or instructions or test report,with or without penetration into protection at the head and sides. the framing.Where the fastener penetrates fully through 2.In accordance with the flashing design or method of the sheathing,the end of the fastener shall extend not less a registered design professional. than 1/4 inch beyond the opposite face of the sheathing. g Fasteners for vinyl siding and insulated vinyl siding 3.1n accordance with other approved methods. installed over foam plastic sheathing shall be in accordance emn E AND MASONRY SONRY VENEER-GFNERAL:1RC with Section R703.11.2.Fasteners for vinyl siding and Section L L.Anchored insulated vinyl siding installed over fiberboard or gypsum Section R703.8.Anchored stone and masonry veneer shall be sheathing shall penetrate not less than 11/4 inches into installed in accordance with this R7031er,Table 3(1)and F gures R703 8(1)handtR703 8(2).These framing. 21 veneers installed over a backing of wood or cold-formed steel footings or other approved structural systems designed to " shall be limited to the first story above grade plane and shall accommodate all loads in accordance with Section R301.Deck not exceed 5 inches in thickness.See Section R602.10 for wall footings shall be sized to carry the imposed loads from the bracing requirements for masonry veneer for wood-framed deck structure to the ground as shown in Figure R507.3. construction and Section R603.9.5 for wall bracing Exceptions:1.Footings shall not be required for free-standing decks requirements for masonry veneer for cold-formed steel consisting ofjoists directly supported on grade over their entire construction.Fxception:For detached one-or two-family dwellings length 2.Footings shall not be required for free-standing decks that in Seismic Design Categories Do,Di and D2 exterior stone or meetALL of thefollowing criteria.2.1.The joists bear directly on masonry veneer,as specified in Table R703.8(2),with a backing of precast concrete pier blocks at grade without support by beams or wood framing shall be permitted to the height specified in Table posts.2.2. The area of the deck does not exceed 200 square feet.2.3. R703.8(2)above a noncombustible foundation. Wall bracing and The walking surface is not more than 20 inches above grade at any hold downs at exterior and interior braced wall lines shall be point within 36 inches measured horizontally from the edge.The in accordance with section R602.10 and R602.11.In minimum size of concrete footings shall be in accordance with Table R507.3.1,based on the tributary area and allowable accordance with Footnote a of Table R703.8(2),cripple walls soil-bearing pressure in accordance with Table R401.4.1.Deck shall not be permitted due to D2 seismic design category. footings shall be placed not less than 12 inches(305 mm) Required interior braced wall lines shall be supported on below the undisturbed ground surface.Deck Posts:For single- continuous foundations.Anchored veneer shall be supported level decks,wood post size shall be in accordance with Table on footings,foundations,or other noncombustible support. R507.4.Where posts bear on concrete footings in accordance Wall ties shall be corrosion resistant. with Section R403 and Figure R507.3,lateral restraint shall be provided by manufactured connectors or a minimum post 67.SIDING/EARTH SEPARATION: IRC Section R317.1- embedment of 12 inches in surrounding soils or concrete piers. #5. Wood siding,sheathing and wall framing on the exterior Other footing systems shall be permitted.Exception. Where of the building used within 6" of ground or less than 2 inches expansive,compressible,shifting or other questionable soils are measured vertically from concrete steps,porch slabs,patio present,surrounding soils shall not be relied on for lateral support slabs and similar horizontal surfaces exposed to the weather; Deck Beams:Maximum allowable spans for wood deck shall be natural durable wood or wood that is preservative beams,as shown in Figure R507.5,shall be in accordance treated in accordance that specified in item#56 of this with Table R507.5.Beam plies shall be fastened together with checklist.Wood or other products shall conform to the most two rotas of 10d(3-inch x 0.128-inch)nails minimum at 16 restrictive of either manufacturer specifications or code inches on center along each edge.Beams shall be permitted to requirements. cantilever at each end up to one-fourth of the actual beam span. Deck beams of other materials shall be permitted where 68.D K XT RIOR STAIRS: IRC R507,R317.1.2 designed in accordance with accepted engineering practices. All wood in contact with the ground,embedded in concrete in Deck beams shall be attached to supports in a manner capable direct contact with the ground or embedded in concrete of transferring vertical loads and resisting horizontal exposed to the weather that supports permanent structures displacement.Deck beam connections to wood posts shall be in intended for human occupancy shall be approved pressure- accordance with Figures R507.5.1(1)and R507.5.1(2). preservative-treated wood suitable for ground contact use, Manufactured post-to-beam connectors shall be sized for the except that untreated wood used entirely below groundwater post and beam sizes.Bolts shall have washers under the head level or continuously submerged in fresh water shall not be and nut.Deck Joist:Maximum allowable spans for wood deck required to be pressure-preservative treated.In addition, joists,as shown in Figure R507.6,shall be in accordance naturally durable wood or pressure preservative treated wood with Table R507.6.The maximum joist spacing shall be shall be used in those portions of wood members that form the limited by the decking materials in accordance with Table structural supports of buildings,balconies,porches,or similar R507.7.The ends of joists shall have not less than 11/2 inches of permanent building appurtenances when those members are bearing on wood or metal and not less than 3 inches of bearing exposed to the weather without adequate protection from a on concrete or masonry over its entire width.Joists bearing on roof,eave,overhang,or other covering that would prevent top of a multiple-ply beam or ledger shall be fastened in moisture or water accumulation on the surface or at joints accordance with Table R602.3(1).Joists bearing on top of a between members.Field applied treatment is not an approved single-ply beam or ledger shall be attached by a mechanical method.Treatment must be applied by manufacturer,see item connector.Joist flaming into the side of a beam or ledger board #56 of this checklist.Wood-framed decks shall be in shall be supported by approved joist hangers.Joist ends and accordance with this section.Decks shall be designed for bearing locations shall be provided with lateral resistance to the live load required in Section R301.5 or the ground snow prevent rotation.Where lateral restraint is provided by joist load indicated in Table R301.2,whichever is greater.For decks hangers or blocking between joists,their depth shall equal not using materials and conditions not prescribed in this section, less than 60 percent of the joist depth.Where lateral restraint is refer to Section R301.Fasteners:metal fasteners and provided by rim joists,they shall be secured to the end of each connectors used for all decks shall be in accordance joist with not fewer than three 1 Od nails or three No. 10 x 3- with Section R317.3 and Table R507.2.3 Flashing.Flashing inch-long wood screws.Where supported by attachment to an shall be corrosion-resistant metal of nominal thickness not less exterior wall,decks shall be positively anchored to the primary than 0.019 inch or approved nonmetallic material that is structure and designed for both vertical and lateral loads. Such compatible with the substrate of the structure and the decking attachment shall not be accomplished by the use of toenails or materials.Footings:Decks shall be supported on concrete nails subject to withdrawal.For decks with cantilevered 22 framing members,connection to exterior walls or other additional loading.Truss engineering data and installation framing members shall be designed and constructed to resist specifications,including the type of roofing to be used,shall uplift resulting from the full live load specified in Table be available on site at framing inspection. R301.5 acting on the cantilevered portion of the deck.Where 7D.RAFTERS_IRC Section R802.A ridge board used to positive connection to the primary building structure cannot be connect opposing rafters shall be not less than 1-inch nominal verified during inspection,decks shall be self-supporting. thickness and not less in depth than the cut end of the rafter. Ledger:Deck ledgers shall be a minimum 2-inch by 8-inch Where ceiling joist or rafter ties do not provide continuous ties nominal,pressure-preservative-treated Southern pine,incised across the structure as required by Section R802.5.2,the ridge pressure-preservative-treated hem-fir,or approved naturally shall be supported by a wall or ridge beam designed in durable,No.2 grade or better lumber.Deck ledgers shall not accordance with accepted engineering practice and supported support concentrated loads from beams or girders.Deck on each end by a wall or column.Rafters shall be framed ledgers shall not be supported on stone or masonry veneer. Band joists supporting a ledger shall be a minimum 2-inch- opposite from each other to a ridge board,shall not be offset nominal,solid-sawn,spruce-pine-fir or better lumber or a more than 1-1/2 inches from each other and shall be connected minimum 1-inch nominal engineered wood rim boards.Band with a collar tie or ridge strap in accordance with Section joists shall bear fully on the primary structure capable of R802.4.6 or directly opposite from each other to a gusset plate supporting all required loads.Lateral Load Connections: in accordance with Table R602.3(1).Rafters shall be nailed to Lateral load connections must be provided in accordance the top wall plates in accordance with Table R602.3(l)unless with Figure R507.9.2(1),hold-down tension devices shall be the roof assembly is required to comply with the uplift installed in not less than two locations per deck,within 24 requirements of Section R802.11.Hip and valley rafters shall inches of each end of the deck.Each device shall have an be not less than 2 inches nominal in thickness and not less in allowable stress design capacity of not less than 1,500 pounds. depth than the cut end of the rafter.Hip and valley rafters Where the lateral load connections are provided in accordance shall be supported at the ridge by a brace to a bearing with Figure R507.9.2(2),the hold-down tension devices shall partition or be designed to carry and distribute the specific be installed in not less than four locations per deck,and each load at that point. Where the roof pitch is less than 3:12(25- device shall have an allowable stress design capacity of not less percent slope), structural members that support rafters and than 750 pounds.Exception:Decks not more than 30 inches above ceiling joists, such as ridges,hips and valleys,shall be grade at any point may be unattached designed as beams.Installation of purlins to reduce the span of Guards:Where guards are supported on deck rafters is permitted as shown in Figure R802.4.5.Purlins shall framing,guard loads shall be transferred to the deck framing be sized not less than the required size of the rafters that they with a continuous load path to the deck joists. support.Purlins shall be continuous and shall be supported by Where guards are connected to the interior or exterior side of a 2-inch by 4-inch braces installed to bearing walls at a slope not deck joist or beam,the joist or beam shall be connected to the less than 45 degrees from the horizontal.The braces shall be adjacent joists to prevent rotation of the joist or beam. spaced not more than 4 feet on center and the unbraced length Connections relying only on fasteners in end grain withdrawal of braces shall not exceed 8 feet.Where collar ties are used to are not permitted.Where guards are mounted on top of the connect opposing rafters,they shall be located in the upper decking,the guards shall be connected to the deck framing or third of the attic space and fastened in accordance with Table blocking and installed in accordance with manufacturer's R602.3(1).Collar ties shall be not less than 1 inch by 4 inches instructions to transfer the guard loads to the adjacent joist. nominal,spaced not more than 4 feet on center.Ridge straps Where 4-inch by 4-inch wood posts support guard loads shall be permitted to replace collar ties.Ridge straps shall be applied to the top of the guard,such posts shall not be notched not less than 1-1/4-inch x 20 gage and shall be nailed to the top at the connection to the supporting structure. edge of each rafter with not fewer than three 1 Od common nails Other guards shall be in accordance with either the with the closest nail not closer than 23/8 inches from the end of manufacturer's instructions or accepted engineering principles. the rafter.Ceiling joists shall be continuous across the 69.W001)TRUSSES•IRC Section R502.11,R802.10. structure or securely joined where they meet over interior Wood trusses shall be designed in accordance with approved partitions in accordance with Section R802.5.2.1.Ceiling joists engineering practice. Trusses shall be braced to prevent shall be fastened to the top plate in accordance with Table R602.3(1).Where ceiling joists run parallel to rafters and are rotation and provide lateral stability in accordance with the located in the bottom third of the rafter height,they shall be requirements specified in the construction documents for the installed in accordance with Figure R802.4.5 and fastened to building and on the individual truss design drawings.In the rafters in accordance with Table R802.5.2(1).Where the absence of specific bracing requirements,trusses shall be braced in accordance with accepted industry practices,such as ceiling joists are installed above the bottom third of the rafter height,the ridge shall be designed as a beam in accordance the SBCA Building Component Safety Information(BCSI)Guide to Good Practice for Handling,Installing&Bracing of with Section R802.3.Where ceiling joists do not run parallel to Metal Plate Connected Wood Trusses. Truss members and rafters,rafters shall be tied across the structure with a rafter tie in accordance with Section R802.5.2.2,or the ridge shall be components shall not be cut,notched,spliced or otherwise designed as a beam in accordance with Section R802.3. Where altered in any way without the approval of a registered design ceiling joists are not connected to the rafters at the top wall professional.Alterations resulting in the addition of load that exceeds the design load for the truss,shall not be permitted plate,joists connected higher in the attic shall be installed as rafter ties,or rafter ties shall be installed to provide a without verification that the truss is capable of supporting the 23 continuous tie.Rafter ties shall be min.2"x4",installed in provisions of Mason County Code,Title 14 chapter 14.48 - accordance with connection requirements in Table R802.5.2(1) (Stormwater Management),and IRC R401.3. If a stormwater at maximum spacing of 24"on center.Ends of ceiling joists plan is not required,or an alternative method is proposed, shall be lapped not less than 3 inches or butted overbearing measures must be put in place to protect the structure from partitions or beams and toenailed to the bearing member. excessive splash,divert the water away from the foundation Where ceiling joists are used to provide the continuous tie per IRC R401.3,and protect the parcel(and adjacent parcels) across the building,lapped joists shall be nailed together in from erosion.IRC Section R903.4. Unless roofs are sloped to accordance with Table R802.5.2(l)and butted joists shall be drain over roof edges,roof drains shall be installed at each low tied together with a connection of equivalent capacity.Laps in point of the roof. Where required for roof drainage,scuppers joists that do not provide the continuous tie across the building shall be placed level with the roof surface in a wall or parapet. shall be permitted to be nailed in accordance with Table Overflow drains shall discharge to an approved location and R6023(1).The ends of each rafter or ceiling joist shall have shall not be connected to roof drain lines. not less than 1-1/2 inches of bearing on wood or metal and not less than 3 inches on masonry or concrete.The bearing on 73.ROOF MATERIALS: Section R904&R905.Roof IRC masonry or concrete shall be direct,or a sill plate of 2-inch covering materials shall be delivered in packages bearing the manufacturer's identifying marks and approved testing minimum nominal thickness shall be provided under the rafter or ceiling joist.The sill plate shall provide a minimum nominal agency labels required.Bulk shipments of materials shall be bearing area of 48 square inches.Where the roof pitch is accompanied by the same information issued in the form of a certificate or on a bill of lading by the manufacturer.Roof greater than or equal to 3 units vertical in 12 units horizontal (25-percent slope),and ceiling joists or rafter ties are connected coverings shall be applied and installed in accordance with Section R905 and the manufacturer's installation instructions. to rafters to provide a continuous tension tie in accordance with In accordance with Table R905.2.4.1 Asphalt shingles Section R802.5.2,vertical bearing of the top of the rafter classified using ASTM D 3161 with shingle classification of against the ridge board shall satisfy this bearing requirement. A,D,or F are acceptable for use in Mason County and other MRAFTER OPENINGS: IRC Section R802.9.Openings in areas where wind zones less than 110 mph.Underlayment for roof and ceiling framing shall be framed with header and asphalt shingles,clay and concrete tile,metal roof shingles, trimmer joists.Where the header joist span does not exceed 4 mineral-surfaced roll roofing,slate and slate-type shingles, feet,the header joist shall be permitted to be a single member wood shingles,wood shakes,metal roof the same size as the ceiling joist or rafter.Single trimmer panels and photovoltaic shingles shall'conform to the joists shall be permitted to be used to carry a single header applicable standards listed in this joist that is located within 3 feet of the trimmer joist bearing, chapter. Underlayment materials required to comply Where the header joist span exceeds 4 feet,the trimmer joists with ASTM D226,D1970,D4869 and D6757 shall bear and the header joist shall be doubled and of sufficient cross a label indicating compliance to the standard designation and, section to support the ceiling joists or rafter framing into the if applicable,type classification indicated in Table header.Approved hangers shall be used for the header joist to R905.1.1(1). Underlayment shall be applied in accordance trimmer joist connections where the header joist span exceeds with Table R905.1.1(2). Underlayment shall be attached in 6 feet.Tail joists over 12 feet long shall be supported at the accordance with Table R905.1.1(3). header by framing anchors or on ledger strips not less than 2 74.ATTIC VENTILATION:IRC Section R806.Enclosed inches by 2 inches. attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have 72.C'EILING JOISTS LATERAL SUPPORT cross ventilation for each separate space by ventilating BRIDGING:IRC Section R802.8,R802.8.1.6.Lateral openings protected against the entrance of rain or snow. Support-Roof framing members and ceiling joists having a Ventilation openings shall have a least dimension of 1/16 inch depth-to-thickness ratio exceeding 5 to 1 based on nominal minimum and 1/4 inch maximum.Ventilation openings dimensions shall be provided with lateral support at points of having a least dimension larger than 1/4 inch shall be provided bearing to prevent rotation.For roof rafters with ceiling joists with corrosion-resistant wire cloth screening,hardware cloth, attached in accordance with Table R602.3(1),the depth-to- perforated vinyl or similar material with openings having a thickness ratio for the total assembly shall be determined using least dimension of 1/16 inch minimum and 1/4 inch the combined thickness of the rafter plus the attached ceiling maximum.Openings in roof framing members shall conform joist.Exception:Roof trusses shall be braced in accordance to the requirements of Section R802.7.Required ventilation with Section R802.10.3.Bridging-Rafters and ceiling joists openings shall open directly to the outside air and shall be having a depth-to-thickness ratio exceeding 6 to 1 based on protected to prevent the entry of birds,rodents,snakes,and nominal dimensions shall be supported laterally by solid other similar creatures.The minimum net free ventilating area blocking,diagonal bridging(wood or metal)or a continuous shall be 11150 of the area of the vented space. 1-inch by 3-inch wood strip nailed across the rafters or ceiling Exception:The minimum net free ventilation area shall be 11300 of joists at intervals not exceeding 8 feet. the vented space provided both of the following conditions are met: 1.In Climate Zones 6, 7 and 8,a Class I or II vapor retarder is Z4.ROOF DRAINAGE:UPC 1101.12.1. Roof areas of a installed on the warm-in-winter side of the ceiling. building shall be drained by roof drains or gutters.Gutters and 2.Not less than 40 percent and not more than 50 percent of the downspouts are to be installed on strictures to conform to the required ventilating area is provided by ventilators located in the upper portion of the attic or rafter space. Upper ventilators shall be 24 located not more than 3 feet below the ridge or highest point of the 77.APPROVED PLANS IRC Sections R106.3.1,R106.4. space, measured vertically. The balance of the required ventilation When the building official issues a permit,the construction provided shall be located in the bottom one-third of the attic space. documents shall be approved in writing or by stamp.One set Where the location of wall or roof framing members conflicts with of the construction documents reviewed shall be retained by the installation of upper ventilators, installation more than 3 feet the building official. The other set shall be returned to the below the ridge or highest point of the space shall be permitted. Where eave or cornice vents are installed,insulation shall not applicant physically or electronically.Plans shall be kept at the block the free flow of air. A minimum of 1"space shall be site of work and shall be open to inspection by the building p official or the duly authorized representative. The work shall provided between the insulation and the roof sheathing at the location of the vent. Unvented attic assemblies maybe be installed in accordance with the approved construction permitted provided all the conditions of Section R806.5 are documents,and any changes made during construction that are not in compliance with the approved construction documents met AND such installation allows warranty to be maintained by the roofing manufacturer. shall be resubmitted for approval as an amended set of construction documents. 75.CHJM TEY HEIGHT/CHIMNEY CRICKETS: IRC, 78.HEATING: IRC Section R303.10&WA State R1003.9,R1003.20,R1005,R905.2.8.3. Chimneys shall extend not less than 2 feet higher than any portion of a Amendment to R303.10. A dwelling unit shall be provided buildingwithin 10 feet but shall not be less than 3 feet above with heating facilities capable of maintaining a minimum the highest point where the chimney passes through the roof. room temperature of 68°F at a point 3'above the floor and 2' from exterior walls in all habitable rooms at the design Masonry chimneys shall be provided with crickets when the dimension parallel to the ridgeline is greater than 30"and does temperature.The installation of one or more portable heaters not intersect the ridgeline. The cricket and chimney shall be shall not be used to achieve compliance with this section. flashed, and counter flashed in the same manner as normal Primary heating sources in all new and substantially roof-chimney intersection.Crickets shall be constructed in remodeled buildings shall not be dependent upon wood stoves. compliance with Figure R1003.20 and Table R1003.20. No new or used solid fuel-burning device shall be installed in Factory-built chimneys shall be listed and labeled and shall be new or existing buildings unless such device is U.S.EPA installed and terminated in accordance with the manufacturer's certified and conforms with RCW 70A.15.1005,70A.15.3 500, installation instructions.A cricket or saddle shall be installed 70A.15.3 5 10,and 70A.15.3 530.Exception:Antique wood on the ridge side of any chimney or penetration of roof more cook stoves and wood heaters manufactured prior to 1940. than 30-inches wide as measured perpendicular to the slope. 79.SKYLIGHTS: IRC Section R308.6.2. The following Cricket or saddle coverings shall be sheet metal or of the same types of glazing may be used: 1)Laminated glass with a material as the roof covering. minimum.015"polyvinyl butyl interlayer for glass panes 16 76.PREMISE IDENTIFICATION• IRC Section R319, IFC sq.ft. or less in area located such that the highest point of the Section 505.1,and Mason County Code Title 14.28.Buildings glass is not more than 12' above a walking surface or other shall be provided with approved address identification.The accessible area;for higher or larger sizes,the minimum address identification shall be legible and placed in a position interlayer thickness shall be.030". 2)Fully tempered glass. that is visible from the street or road fronting the property. 3)Heat-strengthened glass. 4)Wired glass. 5)Approved Address identification characters shall contrast with their rigid plastics. Installed skylights shall comply with background.Address numbers shall be Arabic numbers or Washington State Energy Code requirements. alphabetical letters.Numbers shall not be spelled out.Each 80.INTERIOR FINISHES:JRC Sections R302.9,R316 character shall be not less than 4 inches in height with a stroke and R702.5 Wood veneer paneling and hardboard paneling width of not less than 1/2 inch.Where required by the fire shall be placed on wood or cold-formed steel framing spaced code official,address identification shall be provided in not more than 16 inches on center.Wood veneer additional approved locations to facilitate emergency and hardboard paneling less than 1/4-inch nominal thickness response.Where access is by means of a private road and the shall not have less than a 3/s-inch gypsum board or gypsum building address cannot be viewed from the public way, a panel product backer.Wood veneer paneling not less than 1/4- monument,pole or other sign or means shall be used to inch nominal thickness shall conform to ANSI/HPVA HP-1. identify the structure.Address identification shall be Hardboard paneling shall conform to CPA/ANSI A135.5.All maintained.Address signage must have backed with material structural panel components within the conditioned space such of aluminum or other weather resistant material with a green as plywood,particle board,wafer board and oriented strand or red coating.Must have white reflectorized lettering for board shall be identified as"EXPOSURE 1,""EXTERIOR'or contrasting color on the background.Lettering may be "HUD-APPROVED." When using foam plastic insulation, horizonal or vertical.Must be mounted on a post or other unless otherwise allowed in Section R316.5,foam plastic shall approved object at the intersection of the driveway and public be separated from the interior of a building by an approved road serving the parcel and be visible from both directions. thermal barrier of not less than 1/2-inch gypsum wallboard, When there is long-shared driveway,easement or any 23/32-inch wood structural panel or a material that is tested in situation that could create confusion in finding an entrance, accordance with and meets the acceptance criteria of both the address,numbers must be posed together at the main access Temperature Transmission Fire Test and the Integrity Fire point and at each tam and/or driveway entrance providing Test of NFPA 275. direction to the parcel with arrows if necessary. 25 81.GYPS M WALLBOARD&GYPSUM 84.11ETAINING WALLS: IRC Section R105.2,R404.4. WALLBOARD FASTENING• IRC Section R702.3, and Retaining walls that are not laterally supported at the top and Table R702.3.5.All wood framing supporting gypsum board that retain in excess of 48 inches of unbalanced fill or shall not be less than 2-inches nominal thickness in the least retaining walls exceeding 24 inches in height that resist lateral' dimension except that furring strips, not less than 1"x 2"may loads in addition to soil,shall be designed in accordance with be used over solid backing or framing spaced not more than accepted engineering practice to ensure stability against 24-inches O.C. When gypsum is used as a base or backer for overturning,sliding,excessive foundation pressure and water adhesive application of ceramic tile or other required uplift.Retaining walls shall be designed for a safety factor of nonabsorbent material shall conform with ASTM 1396,Cl 178 1.5 against lateral sliding and overturning.This section shall or C1278. Use of water-resistant gypsum backing board shall not apply to foundation walls supporting buildings.Retaining be permitted to be used on ceilings.Water resistant gypsum walls that are not over 4'in height measured from the bottom wallboard shall not be installed over a class I or II vapor of the footing to the top of the wall not supporting a retarder,in a shower or tub compartment.Cut or exposed surcharge,are exempt from permits.Retaining Wall edges, including those at wall intersections,shall be sealed as Surcharge; loading on a retaining wall is a vertical load recommended by the manufacturer. Limitations: Water- imposed on the retained soil that may impose a lateral force resistant gypsum backing board shall not be used where there against the retaining wall in addition to the lateral earth will be direct exposure to water, or in areas subject to pressure of the retained soil.Any added weight above a continuous high humidity. Screws for attaching gypsum board retaining wall is called a surcharge. Patios, swimming pools to wood framing shall be type W or Type S in accordance with and driveways are common residential surcharges. ASTM C 1002 and shall penetrate the wood not less than 5/8". 85.SLAB ON GRADE FOUNDATION INSULATION:_ 3/8"min.Thickness of gypsum board or gypsum panel IECCIWSEC R303, R402.2.8,R402.2.9,R402.2.9.1 &Table product. R402.1.1.The minimum thermal resistance(R-value)of the •Fastening(nails): 7"o.c.max.on ceiling& 8"o.c.max insulation around the perimeter of unheated or heated slab-on- on walls when framing is 16"o.c. grade floors shall be as specified in Table R402.1.3.The •Fastening(screws): 12"o.c.max ceiling& 16" o.c.max insulation(R-10)shall be placed on the outside of the on walls when framing is 16"o.c. foundation or on the inside of the foundation wall.The • Size of Nail: 13 gage, 11/4"long, 11/64"head;0.098" insulation shall extend downward from the top of the slab for a diameter, 11/4"long,ring shank;or 4d cooler nail,0.080" minimum 48 inches in accordance with table R402.1.3 or to diameter, 13/8"long,'/32"head.: the top of the footing,whichever is less,or downward to at • See Table R702.3.5 for more information. least the bottom of the slab and then horizontally to the interior or exterior for the total distance shown in the table.A 82.STORY/STORY ABOVE GRADE—MC Section R202. two-inch by two-inch(maximum)pressure treated nailer may Any story having it finished floor surface entirely above grade be placed at the finished floor elevation for attachment of plane or in which the finished surface of the floor next above interior finish materials.Insulation extending away from the is either of the following: 1)Is more than 6' above grade building shall be protected by pavement or by a minimum of plane.2)Is more than 12' above the finished ground level at 10 inches of soil.Heated slab-on-grade floors.The entire any point? area of a heated slab-on-grade floor shall be thermally isolated from the soil with a minimum of R-10 insulation.The 83.HEIGHT OF BUILDING/GRADE PLANE:IRC insulation shall be an approved product for its intended use.If Section R202.Grade Plane:A reference plane representing a soil gas control system is present below the heated slab on- the average of the finished ground level adjoining the building grade floor,which results in increased convective flow below at all exterior walls.Where the finished ground level slopes the heated slab-on-grade floor,the heated slab-on-grade floor away from the exterior walls,the reference plane shall be shall be thermally isolated from the sub-slab gravel layer.R- established by the lowest points within the area between the 10 heated slab-on-grade floor insulation is required for all building and the lot line or,where the lot line is more than 6 compliance paths. feet from the building between the structure and a point 6 feet from the building.Height-Building: The vertical distance MUNDER-FLOOR INSULATION_. IECCIWSEC R303, from grade plane to the average height of the highest roof R402.2.7. Table R402.1.3 Floor cavity insulation in surface.Story Height: The vertical distance from top to top accordance with WSEC Table R402.1.3 shall be R-30. of two successive tiers of beams or finished floor surfaces; Insulation shall comply with one of the following: 1. and,for the topmost story,from the top of the floor finished to Insulation shall be installed to maintain permanent contact the top of the ceiling joists or,where there is not a ceiling,to with the underside of the subfloor decking in accordance with the top of the roof rafters. manufacturer instructions to maintain required R-value or readily fill the available cavity space.Insulation supports shall be installed so spacing is no more than 24-inches on center. Foundation vents shall be placed so that the top of the vent is below the lower surface of the floor insulation.2.Floor framing cavity insulation shall be permitted to be in contact with the top side of sheathing separating the cavity and the unconditioned space below.Insulation shall extend from the 26 bottom to the top of all perimeter floor framing members and than 3 feet in 12 and there is at least 30 inches of clear distance the framing members shall be air sealed.2021 Washington from the top of the bottom chord of the truss or ceiling joist to State Energy Code RE-25 3.A combination of cavity and the underside of the sheathing at the roof ridge.The thickness continuous insulation shall be installed so that the cavity of blown-in or sprayed roof/ceiling insulation(fiberglass or insulation is in contact with the top side of the continuous cellulose)shall be written in inches on markers that are insulation that is installed on the underside of the floor installed at least one for every 300 square feet throughout the framing separating the cavity and the unconditioned space attic space.The markers shall be affixed to the trusses or joists below.The combined R-value of the cavity and continuous and marked with the minimum initial installed thickness with insulation shall equal the required R-value for floors. numbers a minimum of 1 inch in height.Each marker shall face Insulation shall extend from the bottom to the top of all the attic access opening.Spray polyurethane foam thickness perimeter floor framing members and the framing members and installed R-value shall be listed on certification provided shall be air sealed.Exceptions: 1. When foundation vents are by the insulation installer.Where eave or cornice vents are not placed so that the top of the vent is below the lower installed,blocking,bridging and insulation shall not block the surface of the floor insulation, a permanently attached baffle free flow of air.Not less than a 1-inch space shall be provided shall be installed at an angle of 30°from horizontal, to divert between the insulation and the roof sheathing and at the airflow below the lower surface of the floor insulation. 2. location of the vent.Ventilators shall be installed in accordance Substantial contact with the surface being insulated is not with the manufacturer's instructions.Installation of ventilators required in enclosed floor/ceiling assemblies containing ducts in roof systems shall be in accordance with the requirements where full R-value insulation is installed between the duct and of Section R903.Installation of ventilators in wall systems the exterior surface. shall be in accordance with the requirements of Section R703.1.Eave vents shall be provided with baffles to deflect 87.wALL 1NSUL&TLQDjL IECC/WSEC R303,R402.2.8 incoming air above the surface of the insulation.The baffles &Table R402.1.3.Wall assemblies in the building thermal shall be rigid material,resistant to wind driven moisture.The envelope shall comply with the vapor retarder requirements vertical joints shall be staggered when two or more layers of of Section R702.7 of the International Residential Code or rigid board insulation are'used.The minimum ventilation Section 1404.3 of the International Building Code,as requirements in IRC Section R806.2.See item 976. applicable.Above grade exterior walls shall be insulated to not less than the nominal R value specified in Table R402.1.3. 89.„U TED CEILING [Nsu ,ATION: WSEC R402.2, Unless approved by other approved approaches in accordance Tables R402.1.1 and R402.4.1.1.Vaulted ceiling insulation with the WSEC.The typical R-value for wall insulation shall shall be installed where an enclosed joist or rafter space is be minimum,R-20 w/R-5 continuous or R-13 wl R-10 formed by ceilings applied directly to the underside of roof continuous.All exterior wall insulation shall fill the entire joists or rafters.This requirement applies where both the framed cavity. Faced batts shall be face-stapled to avoid distance between the top of the ceiling and the underside of the compression(not inset-stapled).An R-value identification roof sheathing is less than 12-inches and there is a minimum 1- mark shall be applied by the manufacturer to each piece of inch vented air space above the insulation.Where a single building thermal envelope insulation 12 inches or greater in rafter or joist-vaulted ceiling is 13-inches or more the space width.Alternately,the insulation installers shall provide a shall be insulated as a ceiling,typically R-38.Unless approved certification listing the type,manufacturer and R-value of for other than prescriptive approach the-typical R-Value for insulation installed in each element of the building thermal non- trussed,vaulted ceiling insulation shall be R-3 8.Faced envelope.For blown or sprayed insulation(fiberglass and batts shall be face-stapled(not inset- stapled). cellulose),the initial installed thickness,settled thickness, settled R-value,installed density,coverage area and number of 9o.ACCESS HATCHES AND DOORS:WSEC R402.2.4 bags installed shall be listed on the certification.For sprayed Access hatches and doors.Access hatches and doors from polyurethane foam(SPF)insulation,the installed thickness of conditioned spaces to unconditioned spaces such as attics and the areas covered,and R-value of installed thickness shall be crawl spaces shall be insulated to the same R-value required listed on the certification.For insulated siding,the R-value by table R402.1.3 for the wall or ceiling in which they are shall be labeled on the product's package and shall be listed on installed.Exception:Vertical doors providing access from the certification.The insulation installer shall sign,date,and conditioned spaces to unconditioned spaces that comply with post the certification in a conspicuous location on the job site. the fenestration requirements of Table R402.1.3.R402.2.4.1 Access hatches and door insulation installation and retention. 88.ATTIC INSULATION: IRC R806,IECC/WSEC R303.1, Vertical or horizontal access hatches and doors from R402.2.1 &Table R402.4.1.1.In accordance with Section conditioned spaces to unconditioned spaces such as attics and R402.1.3 requires a R-60 in the ceiling or attic,installing R-49 100 percent of the ceiling area requiring crawl spaces shall be weather-stripped.Access that prevents over iring insulation shall damaging or compressing the insulation shall be provided to satisfy the requirement for R 60 wherever the full height of all equipment.Where loose fill insulation is installed, a wood uncompressed R-49 insulation extends over the wall top plate framed or equivalent baffle or retainer,or dam shall be at the eaves.This reduction shall not apply to the insulation and installed to prevent the loose-fill insulation from spilling into fenestration criteria in Section R402.1.2 and the Total UA the living spaces,from higher to lower sections of the attic and alternative in Section R402.1.5.R402.2.1.1 Loose insulation in from attics covering conditioned spaces to unconditioned attic spaces-Open-blown or poured loose fill insulation may be spaces.The baffle or retainer shall provide a permanent means used in attic spaces where the slope of the ceiling is not more 27 of maintaining the installed R-value of the loose fill insulation. for ducts serving ventilation systems that are not integrated with ducts serving heating or cooling systems.A written report of the 91.DUCT INSULATION/DUCT LEAKAGE:. results shall be signed by the party conducting the test and provided IECC/WSEC R403.3.L,R403.3.3.IRC chapter Ml6,&IMC to the code official.R403.3.6.Duct leakage:The total leakage of, Chapter 6.Supply and return ducts located outside conditioned the ducts,measured in accordance with Section R403.3.3, space shall be insulated to an R-value of not less than R 8 for shall be as follows: 1.Rough-in test:Total leakage shall be ducts 3 inches in diameter and larger and not less than R-6 for less than or equal to 4.0 cfm per 100 square feet of ducts smaller than 3 inches in diameter.Ducts buried beneath conditioned floor area when tested at a pressure differential of a building shall be insulated as required per this section or 0.1 inches w.g.(25 Pa)across the system,including the have an equivalent thermal distribution efficiency.Ducts manufacturer's air handler enclosure.All registers shall be within a concrete slab or in the ground shall be insulated to R taped or otherwise sealed during the test.If the air handler is 10 with insulation designed to be used below grade. not installed at the time of the test,total leakage shall be less Underground ducts utilizing the thermal distribution efficiency than or equal to 3.0 cf n per 100 square feet of conditioned method shall be listed and labeled to indicate the R value floor area.2021 Washington State Energy Code RE-33 *2. equivalency. Ducts are located in conditioned space.For Postconstruction test:Leakage to outdoors shall be less than or ducts to be considered as being located inside a conditioned equal to4 cfm per 100 square feet of conditioned floor area or space,such ducts shall comply with one of the following: 1. total leakage shall be less than or equal to 4 cfm per 100 All duct systems shall be located completely within the square feet of conditioned floor area when tested at a pressure continuous air barrier and within the building thermal differential of 0.1 inches w.g.(25 Pa)across the entire system, envelope.2.All heating,cooling and ventilation system including the manufacturer's air handler enclosure.All register components shall be installed inside the conditioned space boots shall be taped or otherwise sealed during the test.3.Test including,but not limited to,forced air ducts,hydronic piping, for ducts within thermal envelope:Where all ducts and air hydronic floor heating loops,convectors,and radiators. handlers are located entirely within the building thermal Combustion equipment shall be direct vent or sealed envelope,total leakage shall be less than or equal to 8.0 cubic combustion.3.For forced air ducts,a maximum of 10 linear feet per minute per 100 square feet of conditioned floor area. feet of return ducts and 5 linear feet of supply ducts is For forced air ducts,a maximum of 10 linear feet of return permitted to be located outside the conditioned space, ducts and 5 linear feet of supply ducts may be located outside provided they are insulated to a minimum of R 8.3.1.Metallic the conditioned space.All metallic ducts located outside the ducts located outside the conditioned space must have both conditioned space must have both transverse and longitudinal transverse and longitudinal joints sealed with mastic.3.2.If joints sealed with mastic.If flex ducts are used,they cannot flex ducts are used,they cannot contain splices.Flex duct contain splices.Flex duct connections must be made with connections must be made with nylon straps and installed nylon straps and installed using a plastic strapping tensioning using a plastic strapping tensioning tool.4.Ductwork in floor tool.Ducts located in crawl spaces do not qualify for this cavities located over unconditioned space shall comply with exception. Duct leakage test results shall be posted on the all of the following:4.1.A continuous air barrier installed permanent certificate posted in accordance with R401.3. between unconditioned space and the duct.RE-32 2021 Washington State Energy Code 4.2.Insulation installed in 92.PIPE INSULATION:WSEC R403.4&403.5.3. accordance with Section R402.2.7.4.3.A minimum R-19 Mechanical system piping capable of carrying fluids above insulation installed in the cavity width separating the duct 105°F(41°C)or below 55°F(13°C)shall be insulated to a from unconditioned space. 5.Ductwork located within exterior minimum of R-6.Exception: Up to Z00 feet ofhydronic system walls of the building thermal envelope shall comply with the piping installed within the conditioned space may be insulated with following:5.LA continuous air barrier installed between a minimum of%-inch insulation with a k value of 0.28.R403.4.1 unconditioned space and the duct.5.2.Minimum R 10 Protection of piping insulation.Piping insulation,including insulation installed in the cavity width separating the duct termination ends,exposed to weather shall be protected from from the outside sheathing.5.3.The remainder of the cavity damage,including that caused by sunlight,moisture,physical insulation shall be fully insulated to the drywall side.Ducts damage,and wind,and shall provide shielding from solar radiation that can cause degradation of the material. buried within ceiling insulation.Where supply and return air ducts are partially or completely buried in ceiling insulation, Protection shall be removable for the exposed length or no such ducts shall comply with all of the following: 1.The less than six inches from the equipment for maintenance. supply and return ducts shall have an insulation R value not Adhesive tape shall not be permitted.Insulation for service less than R 8.2.At all points along each duct,the sum of the hot water pipe,both within and outside the conditioned space, ceiling insulation R-value against and above the top of the shall have a minimum thermal resistance(R value)of R 3. duct,and against and below the bottom of the duct,shall be Exception:Pipe insulation is permitted to be discontinuous where it not less than R 19,excluding the R-value of the duct passes through studs,joists or other structural members and where insulation.Exception: Sections of the supply duct that are less the insulated pipes pass other piping,conduit or vents,provided the than 3 feet from the supply outlet shall not be required to insulation is installed tight to each obstruction. comply with these requirements. WSEC R403.3.5 Duct 93.VAPOR RETARDER/MOISTURE CONTROL: IRC Tightness Testing:Ducts shall be leak tested in accordance R702.7&R702.7.1 Vapor retarder materials shall be with WSU RS-33,using the maximum duct leakage rates classified in accordance with Table R702.7(1).A vapor specified.Exception:A duct air leakage test shall not be required retarder shall be provided on the interior side of frame walls of 28 the class indicated in Table R702.7(2),including compliance treated lumber or plywood strip attached to the wall several with Table R702.7(3)or R702.7(4)where applicable.An inches above finished grade level and extending approximately approved design using accepted engineering practice for 9 inches below grade.The joint between the strip and the wall hygrothermal analysis shall be permitted as an alternative.The shall be caulked full length prior to fastening the strip to the climate zone shall be determined in accordance with Section wall.Where approved,other coverings appropriate to the N1101.7.Exceptions: 1.Basement walls.2.Below grade portion of architectural treatment shall be permitted to be used.The any wall.3.Construction where accumulation,condensation or polyethylene film shall extend down to the bottom of the wood freezing of moisture will not damage the materials.4.A vapor footing plate but shall not overlap or extend into the gravel or retarder shall not be required in Climate Zones 1,2 and 3. crushed stone footing. R702.7.1 Spray foam plastic insulation for moisture control with Class H and III vapor retarders.For purposes of compliance with 95.WT";ROWS&EXTE, 10H DOORS: R402.3, Tables R702.7(3)and R702.7(4),spray foam with a maximum R402.1.1.U-Factors for glazing and doors(fenestration) shall permeance of 1.5 perms at the installed thickness applied to the be a.30.This min U-factor for prescriptively approved interior side of wood structural panels,fiberboard,insulating structures U-30.Exception,WSEC approved alternation for sheathing or gypsum shall be deemed to meet the continuous other than prescriptive approach,must be approved by the insulation moisture control requirement in accordance with one of the Building Official and shown on the approved construction following conditions: l.The spray foam R-value is equal to or greater than the plans.Any changes in the windows or doors must be approved specified continuous insulation R-value. by the Building Department prior to installation.NFRC 2.The combined R-value of the spray foam and continuous compliance stickers shall remain on the windows until the insulation is equal to or greater than the specified continuous insulation inspection has been approved by the Building insulation R-value. Department. Table R702.7 Vapor Retarder Materials and Classes. _ CLAS—S ACCEPTABLE MATERIALS _; 96.AIR LEAKAGE INCLUDING RECESSED -- Sheet polyethylene,nonperforated aluminum foil or other approved ! i.IG$TINGFIXTLTRES_lECC/WSECR401.3, R402.4. 1 materials with a perm ratingless than or equalto 0.1. Kraft-faced fiberglass batts,vapor retarder paint orother approved materials The building or dwelling unit shall be tested for air leakage. a applied inaccordancewith the manufacturer's Installation instructionsforai Testing shall be conducted irl ac Latex paint,enamel paint or other approved materials cordance with RESNET/ICC perm rating greater than 0.1 and less than or equalto 1.0. j rials applied In -- _..._ 380,ASTM E779,or ASTM E1827.Test pressure and leakage u1 accordence with the manufacturer's instauationinstructions for aperm rate shall comply with Section R402.1.3.A written report of rating greater than 1.0 and less than or equal to 10.0. —— — — - the test results,including verified location and time stamp of Table R702.7(2)Vapor Retarder Options: the date of the test,shall be signed by the testing agency,and See Table provided to the building owner and code official.Testing shall Marine 4,5,6,7,8 Permitted' Permitted` R702.7(3) T be performed at any time after creation of all penetrations of a. Class I and II vapor retarders with vapor permeance greater than 1 perm when the building thermal envelope.Once visual inspection has measured by ASTM E96 water method(Procedure B)shall be allowed on the interior confirmed air sealing has been conducted in accordance with side of any frame wall in all climate zones. b.Use of a Class I interior vapor retarder in flame walls with a Class I vapor retarder on Table R402.4.1.1,operable windows and doors manufactured the exterior side shall require an approved design. by small business are permitted t0 be sealed off at the frame c.Where a Class Il vapor retarder is used in combination with foam plastic insulating sheathing installed as continuous insulation on the exterior side of frame walls,the prior to the test.Testing of single-family dwellings and continuous insulation shall comply with Table R702.7(4)and the Class II vapor retarder townhouses shall be conducted in accordance with shall have a vapor permeance greater than 1 perm when measured by ASTM E96 water RESNEVICC 3 80.Test pressure and leakage rate shall method(Procedure B). comply with Section R402.1.3.1.For Group R-2 occupancies, Table R702.7(3)Class Ill va or Retarder -. testing shall be conducted in accordance with ASTM E779, CLIMATEZONE _-- CLASS APOR RETARDERS PERMITTED FOR`"-- ASTM E1827,or ASTM E3158.Test pressure and leakage ' lI Vented cladding over wood structural panels - --- --�--- rate shall comply with Section R402.1.3.2.The individual Vented cladding over fiberboard. _ Marine4 _Ve cladding over gypsum__— performing the air leakage test shall be trained and certified by 4 nted continuous Insulation with R-awe a 2.5 ever 2 x awall.' an certification body that is,at the time of permit application, Continuous insulation with R-valuez&75 over 2=swan. an ISO 17024 accredited certification body including,but not a.Vented cladding shall include vinyl,polypropylene,or horizontal aluminum siding limited to,the Air Barrier Association of America.During brick veneer with a clear airspace as specified in Table R703.8.4(1),and other approved testing: 1.Exterior windows and doors,fireplace and stove vented claddings. doors shall be closed,but not sealed,beyond the intended b.The requirements in this table apply only to insulation used to control moisture in order to permit the use of Class III vapor retarders.The insulation materials used to satisfy this weatherstripping or other infiltration control measures.2. option also contribute to but do not supersede the thermal envelope requirements Dampers including exhaust,intake,makeup air,backdraft and of Chapter 11. flue dampers shall be closed,but not sealed beyond intended 94 GROTIPM COVEu IN CRAWL_.SPACE•IRC 406.3.2, infiltration control measures.3.Interior doors,if installed at A 6-mil-thick polyethylene film shall be applied over the the time of the test,shall be open,access hatches to below-grade portion of exterior foundation walls prior to conditioned crawl spaces and conditioned attics shall be open. 4.Exterior or interior terminations for continuous ventilation backfilling.Joints in the polyethylene film shall be lapped 6 systems and heat recovery ventilators shall be sealed.2021 inches and sealed with adhesive.The top edge of the polyethylene film shall be bonded to the sheathing to forma Washington State Energy Code RE-27 5.Heating and cooling systems,if installed at the time of the test,shall be turned off. seal.Film areas at grade level shall be protected from mechanical damage and exposure by a pressure-preservative 6.Supply and return registers,if installed at the time of the 29 test,shall be fully open.Exception:Additions less than 500 square MINIMUM SOURCE SPECIFIC VENTILATION feet of conditioned floor area.The maximum air leakage rate for CAPACITYREQUIREMENTS-TABLE M1505.4.4.1 any dwelling unit under any compliance path shall not exceed AREA TO BE EXHAUST RATES 4.0 air changes per hour.Testing shall be conducted with a EXHAUSTED Intermittent Continuous blower door test at a test pressure of 0.2 inches w.g.(50 Pa). Open kitchens Hood Over Electric Not Permitted Exception:Additions tested with the existing home having a Range combined maximum air leakage rate of 7 air changes per hour.To Enclosed kitchen 60%CE or 160 qualify for this exception,the date of construction of the existing Akitchen whose permanent cfm 5 ACH based on dwelling must be prior to the 2009 Washington State Energy Code. openings to interior adjacent spaces do not exceed total Hood Over kitchen volume Air leakage of fenestration.Windows,skylights and sliding o so square feet Combustion Range glass doors shall have an air infiltration rate of no more than Bathrooms-toilet Mechanical exhaust capacity of 0.3 cfm per square foot and swinging doors no more than 0.5 rooms 50 cfm intermittent or cfm per square foot,when tested according to NFRC 400 or 20 cfm continuous. AAMA/WDMA/CSA 101/I.S.2/A440 by an accredited, NOTE: All exhaust fans providing local exhaust shall have a independent laboratory and listed and labeled by the minimum fan flow rating of not less than 50 clin at.25 water gauge manufacturer.Exceptions.1.Field fabricated fenestration products for bathrooms,laundries,or similar rooms and 100 cfm at.25 water (windows,skylights,and doors).2.Custom exterior fenestration gauge for kitchens. Ventilation ducts shall terminate outside the products manufactured by a small business provided they meet the building.Ventilation ducts located in unconditioned spaces shall be applicable provisions of Chapter 24 of the International Building insulated to a minimum of R-4. Code.Once visual inspection has confirmed the presence of a gasket, 98.WHOLE HOUSE VENTILATION SYSTEM operable windows and doors manufactured by small business shall be permitted to be sealed ofj'at the frame prior to the test.Recessed Continuous or Intermittent:1RC R303.4�M1505.4.,WSEC 403.6.1.Each dwelling unit shall be equipped with a lighting.Recessed luminaires installed in the building thermal envelope shall be Type IC-rated and certified under ASTM ventilation system.The whole-house mechanical ventilation E283 as having an air leakage rate not more than 2.0 cfm systems shall be designed in accordance with Sections M1505.4.1 through M1505.4.4.The whole-house ventilation when tested at a 1.57 psi pressure differential and shall have a label attached showing compliance with this test method.All system shall consist of one or more supply fans,one or more recessed luminaires shall be sealed with a gasket or caulk exhaust fans,or an ERV/HRV with integral fans,associated between the housing and the interior wall or ceiling covering. ducts and controls.Whole-house mechanical ventilation system supply and exhaust fans shall meet the requirements of Electrical and communication outlet bones(air-sealed Sections M1505.4.1.2,M1505.4.1.3,M1505.4.1.4,and bones).Electrical and communication outlet boxes installed in the building thermal envelope shall be sealed to limit air M1505.4.1.5.Local exhaust fans are permitted to serve as part leakage between conditioned and unconditioned spaces. of the whole-house ventilation system when provided with the Electrical and communication outlet boxes shall be tested in proper controls in accordance with Section M1505.4.2.The accordance with NEMA OS 4,Requirements for Air-Sealed systems shall be designed and installed to exhaust and/or supply the minimum outdoor airflow rates required by Section Boxes for Electrical and Communication Applications and M1505A.3 as modified by whole-house ventilation system shall have an air leakage rate of not greater than 2.0 cubic feet coefficients in Section M1505.4.3.1 where applicable.The per minute at a pressure differential of 1.57 psf.Electrical and whole-house ventilation system shall operate continuously at communication outlet boxes shall be marked"NEMA OS 4" the minimum ventilation rate required by Section M1505.4.2 or"OS 4"in accordance with NEMA OS 4.Electrical and unless configured with intermittent off controls in accordance communication outlet boxes shall be installed per the with Section M1505.4.3.2.Whole-house system component manufacturer's instructions and with any supplied components requirements.Whole-house ventilation supply and exhaust required to achieve compliance with NEMA OS 4. fans specified in this section shall have a minimum efficacy as prescribed in the Washington State Energy Code.Design and 97.EXHAUST FANS:,R303.5,M1505.4.4.1:Bathrooms, installation of the system or equipment shall be carried out in toilet rooms,and kitchens shall include a local exhaust system. accordance with manufacturers'installation instructions. Such local exhaust systems shall have the capacity to exhaust Whole-house ventilation fans shall be rated for sound at no the minimum airflow rate in accordance with Table less than the minimum airflow rate required by Section M1505.4.4.1.Fans required by this section shall be provided M1505.4.3.L Ventilation fans shall be rated for sound at a with controls that enable manual override or automatic maximum of 1.0 sone.This sound rating shall be at a occupancy sensor,humidity sensor,timer controls,or pollutant minimum of 0.1 in.w.c.(25 Pa)static pressure in accordance sensor controls.An"on/off'switch shall meet this requirement with HVI procedures specified in Sections for manual controls.Manual fan controls shall be readily M1505.4.1.2 and M1505.4.1.3.Exception:HYAC air handlers, accessible in the room served by the fan. ERY/IMV units,and remote mounted fans need not meet the sound requirements. To be considered for this exception,a remote mounted fan must be mounted outside the habitable spaces, bathrooms,toilets, and hallways, and there must be at least 4 feet(1.3 m)of ductwork between the fan and the intake grille.The whole-house supply fan shall provide ducted outdoor ventilation air to each habitable space within the residential unit.Exception:Interior joining spaces provided with a 30-cfm whole-house transfer fan or a permanent opening with an area of not less than 8 percent of the floor area of 30 the interior adjoining space but not less than 25 square feet do not Fan tested CFM Flex Max,Length Smooth wall require ducted outdoor ventilation air to be supplied directly to the @.as wG Min.Diameter in Feet Mn. space. Whole-house transfer fans shall meet the sone rating Diameter of Section M1505.4.1.1 and shall have whole-house ventilation 50 3-inch X 5 controls that comply with Section M1505.4.2. 50 4-inch 56 114 50 5-inch 90 No Limit 50 6-inch No Limit No Limit WSEC Section R403.6.1 Whole-house mechanical 50 7-inch No Limit No Limit ventilation system fan efficacy.Mechanical ventilation 50 8-inch&above No Limit No Limit system fans shall meet the efficacy requirements of Table 80 3-inch x x R403.6.1 at one or more rating points.Fans shall be tested in 80 4-inch 4 31 accordance with HVI 916 and listed.The airflow shall be 80 5-inch s1 ls2 80 6-inch No Limit No Limit reported in the product listing or on the label.Fan efficacy S0 7-inch No Limit No Limit shall be reported in the product listing or shall be derived from 80 8-inch&above No Limit No Limit the input power and airflow values reported in the product 100 3-inch x x 100 4-inch x 10 listing on the label.Fan efficacy for fully ducted HRV,ERV, 100 5-inch 42 91 balanced,and in-line fans shall be determined at a static 100 6_inch 158 No Limit pressure of not less than 0.2-inch w.c.(49.85 Pa).Fan efficacy 100 7-inch No Limit No Limit for ducted range hoods,bathroom and utility room fans shall 100 8-inch&above No Limit No Limit 125 3-inch X X be determined at a static pressure of not less than 0.1-inch w.c. 125 4-inch x x (24.91 Pa). 125 5-inch 16 51 125 6-inch 91 168 TABLE R403.6.1 125 7-inch No Limit No Limit WHOLE-DWELLING MECHANICAL VENTILATION 125 8-inch&above No Limit No Limit 150 3-inch X X SYSTEM FAN EFFICACY a 150 4-inch X X MINIMUM 150 5-inch 2 28 SYSTEM TYPE AIR FLOW RATE EFFICANCY 150 6-inch 55 112 (CFM'S) (CFM/WATT) 150 7-inch 161 No Limit HRV,ERV or any 150 8-inch&above No Limit No Limit 1.2 cfin/watt 200 3-inch x x balanced 2.8 eft/watt 200 4-inch x X Range Hoods any 200 5-inch x 4 In-line supply or any 3.8 cfrn/watt 200 6-inch 1a 53 exhaust fan 200 7-inch 78 Limit <90 2.8 Cfin/watt 200 8-inch&above 189 No Other exhaust fan >90 3.5 cfnl/watt 250 3-inch x x 250 4-inch x x For SI: 1 cfm=28.3 L/min. a.Design outdoor or exhaust airflow rate/watts of fan used. 250 5-inch x X 250 6-inch 1 25 99.0 T • IRC M1601.1 &WSEC R403.3.1 Duct systems 250 7-inch 40 88 s 250 8-inch&above 111 198 serving heating,cooling and ventilation equipment shall be 300 3-inch x x installed in accordance with the provisions of R1601 and 300 4-inch x x ACCA Manual D,the appliance manufacturer's installation 300 5-inch x x 300 6-inch X 9 instructions or other approved methods.Ducts located outside 300 7-inch 19 54 conditioned space Supply and return ducts located outside 300 8-inch&above 1 69 1 133 conditioned space shall be insulated to an R-value of not less a.Fan airflow rating shall be in accordance with b.For noncircular ducts,calculate the diameter as four times the cross-sectional area divided by the than R-8 for ducts 3 inches in diameter and larger and not less perimeter. C.This table assumes that elbows are not used.Fifteen feet of allowable duct length shall be deducted for than R-6 for ducts smaller than 3 inches in diameter.Ducts each elbow installed In the duct run. d.NL=no limit on duct length ofthis size. buried beneath a building shall be insulated as required per pressured allowed.Any length of duct of this size with assumed turns and fittings will exceed the rated this section or have an equivalent thermal distribution efficiency.Ducts within a concrete slab or in the ground shall FLE505.4.42PTIVE EXHAUST DUCT SRING be insulated to R-10 with insulation designed to be used belowSTED CFMAT025 MINIMUMFLEX MAXIMUMLENGTH IN l MINIMUMSM grade.Underground ducts utilizing the thermal distribution SW.G. DIAMETER I FEET I DIAMETER 4inches I 25 l 4inches efficiency method shall be listed and labeled to indicate the R- cinches I 90 5inches value equivalency. 50 ', 6inches No Limit 6inches 80 4inches° NA 4inches 80 5 inches 15 5 inches -�— -- __...----T...—._._. g0 6inches-._ I 90 6inches —`—— 100 5inches° l NA Slnchea -------- -------r--- ---- . 100 6inches , 45 _I 6inches 125 6inches i 15 _ _ �-6inches 125 7inches 70 7inches 1. a.Frreachedditionatat_w,subt.._.___0fe . ___.__..._._... __.___.._.._. elbow,subtract 10 feet from length. 2. b.Flex ducts of this diameter are not permitted with fans of this size. 31 R403.3.2 Ducts located in conditioned space.For ducts to be R403.3.3.1 Effective R-value of deeply buried ducts.Where considered as being located inside a conditioned space,such using the Total Building Performance compliance option in ducts shall comply with one of the following: Section R405,sections of ducts that are: installed in 1.All duct systems shall be located completely within accordance with Section R403.3.3;located directly on,or the continuous air barrier and within the building within 5.5 inches of the ceiling;surrounded with blown-in thermal envelope. attic insulation having an R-value of R-30 or greater and 2.All heating,cooling and ventilation system located such that the top of the duct is not less than 3.5 inches components shall be installed inside the conditioned below the top of the insulation,shall be considered as having space including,but not limited to,forced air ducts, an effective duct insulation R-value of R-25. hydronic piping,hydronic floor heating loops, R403.3.4 Sealing.Ducts,air handlers,and filter boxes shall be convectors and radiators.Combustion equipment shall sealed.Joints and seams shall comply with either the be direct vent or sealed combustion. International Mechanical Code or International Residential 3.For forced air ducts,a maximum of 10 linear feet of Code,as applicable. return ducts and 5 linear feet of supply ducts is Exceptions: permitted to be located outside the conditioned space, 1.Air-impermeable spray foam products shall be permitted to be provided they are insulated to a minimum of R-8. applied without additional joint 3.1.Metallic ducts located outside the conditioned seals. space must have both transverse and longitudinal 2.For ducts having a static pressure classification of less than 2 joints sealed with mastic. inches ofwater column(500 Pa), 3.2.If flex ducts are used,they cannot contain additional closure systems shall not be required far continuously splices.Flex duct connections must be made with welded joints and seams,and nylon straps and installed using a plastic strapping locking-type joints and seams of other than the snap-lock and button- tensioning tool. lock types. 4.Ductwork in floor cavities located over unconditioned M1601.4.8 Duct separation.Ducts shall not be less than 4 space shall comply with all of the following: inches separation from earth except where they meet the 4.LA requirements of Section M1601.1.2. unconditioned continuous air barrier installed between R302.5.2 Ducts in the garage.Duct in the garage and ducts nditioned space and the duct. penetrating the walls or ceilings separating the dwelling from 4.2.Insulation installed in accordance with Section the garage shall be constructed of a minimum No.26 gage R402.2.7. sheet steel or other approved material and shall not have 4.3.A,minimum R-19 insulation installed in the openings into the garage. cavity width separating the duct from unconditioned space. R303.5 Opening location.Outdoor intake and exhaust openings shall be located in accordance with Sections 5.Ductwork located within exterior walls of the R303.5.1 and R303.5.2. building thermal envelope shall comply with the following: All Ventilation ducts shall terminate outside the building and 5.LA continuous air barrier installed between be equipped with a back-draft damper. unconditioned space and the duct. 100.ME HANICAL.VENTILATION SYSTEM: IRC 5.2.Minimum R-10 insulation installed in the cavity M1505. Each dwelling unit and guest room shall be provided width separating the duct from the outside sheathing. with a whole house mechanical ventilation system designed in 5.3.The remainder of the cavity insulation shall be accordance with M1505.4 through M1505.4.4 or in fully insulated to the drywall side. accordance with specifications allowed in the IMC.The R403.3.3 Ducts buried within ceiling insulation.Where minimum whole-house ventilation rate from Section 1505.4.3 supply and return air ducts are partially or completely buried shall be adjusted by the system coefficient in Table in ceiling insulation,such ducts shall comply with all of the M1505.43(2)based on the system type not meeting the following: definition of a balanced whole-house ventilation system and/or 1.The supply and return ducts shall have an insulation not meeting the definition of a distributed whole-house R-value not less than R-8. ventilation system. 2.At all points along each duct,the sum of the ceiling insulation R-value against and above the top of the duct, TABLE M1505.4.3 2 SYSTEM COEFFICIENT CSYSTEM and against and below the bottom of the duct,shall be Balanced 1.0 1.25 not less than R-19,excluding the R-value of the duct Unbalanced 1.25 1.5 insulation. . Exception: Sections of the supply duct that are less than Run-time% 3 feet from the supply outlet shall not be required to in each 4-hour segment 50% 66% 75% 66% 100% comply with these requirements. Factor 2 1.5 1.3 1.5 1.0 32 State Energy Code.Exhaust fans shall be tested and rated in TABLE M1505.4.3(i)WHOLE-HOUSE MECHANICAL accordance with the airflow and sound rating procedures of VENTILATION AIRFLOW RATE the Home Ventilating Institute(HVI 915,HVI Loudness DWELLING Number of Bedrooms Testing and Rating Procedure,HVI 916,HVI Airflow Test D FLOOR Procedure,and HVI 920,HVI Product Performance AREA 0-1 2 3 a s or more Certification Procedure,as applicable).Exhaust fans required (square feet) Airflow in CFM in this section may be used to provide local ventilation. <500 30 30 35 45 50 Bathroom exhaust fans that are designed for intermittent 501-1,000 30 35 40 50 55 exhaust airflow rates higher than the continuous exhaust 1,001-1500 30 40 45 55 60 airflow rates in Table M1505.4.3.2 shall be provided with 1,501-2,000 35 45 50 60 65 occupancy sensors or humidity sensors to automatically 2,001-2,500 40 50 55 65 70 override the fan to the high speed airflow rate.The exhaust 2,501-3,000 45 55 60 70 75 fans shall be tested and the testing results shall be submitted and posted in accordance with Section M1505.4.1.6. 3,001-3,500 50 60 65 75 80 Air exhaust openings shall terminate as follows: 3,501-4,000 55 65 70 80 85 1.Not less than 3 feet from property lines. 4,001-4,soo 60 70 75 85 90 2.Not less than 3 feet from gravity air intake openings, 4,501-5,000 65 1 75 80 90 95 operable windows, and doors. 3.Not less than 10 feet from mechanical air intake R403.6.2 Testing.Mechanical ventilation systems shall be openings except where either of the following apply: tested and verified to provide the minimum ventilation flow 3.1.The exhaust opening is located not less than rates required by Section R403.6.Testing shall be performed 3 feet above the air intake opening. according to the ventilation equipment manufacturer's 3.2.The exhaust opening is part of a factory- instructions,or by using a flow hood or box,flow grid,or built intake/exhaust combination termination other airflow measuring device at the mechanical ventilation fitting installed in accordance with the fan's inlet terminals or grilles,outlet terminals or grilles, or in manufacturer's instructions,and the exhaust air the connected ventilation ducts.Where required by the code is drawn from a living space. official,testing shall be conducted by an approved third party. 4.Openings shall comply with Sections A written report of the results of the test shall be signed by the R303.5.2 and R303.6. party conducting the test and provided to the code official. All exhaust ducts shall terminate outside the building. Exception:Kitchen range hoods that are ducted to the outside Terminal elements shall have at least the equivalent net free with 6-inch(152 mm)or larger duct and not more than one area of the duct work.Air exhaust and intake openings that 90-degree(1.57 rad)elbow or equivalent in the duct run terminate outdoors shall be protected with corrosion-resistant screens,louvers or grilles having an opening size of not less M1505.4.2 System controls. than 1/4 inch and a maximum opening size of 1/2 inch,in any The whole-house mechanical ventilation system shall be dimension.Openings shall be protected against local weather provided with controls comply with the following: conditions.Outdoor air exhaust and intake openings shall meet the provisions for exterior wall opening protectives in 1.The whole-house ventilation system shall be controlled with accordance with the code. manual switches,timers or other means that provide for automatic operation of the ventilation system that are readily M1505.4.1.7 Duct Test Certificate.A permanent certificate accessible by the occupant. shall be completed by the mechanical contractor,test and 2.Whole-house mechanical ventilation system shall be balance contractor or other approved party and posted on a provided with controls that enable manual override off of the wall in the space where the furnace is located,a utility room, system by the occupant during periods of poor outdoor air or an approved location inside the building.When located on quality.Controls shall include permanent text or a symbol an electrical panel,the certificate shall not cover or obstruct indicating their function.Recommended control permanent the visibility of the circuit directory label,service disconnect labeling to include text similar to the following:"Leave on label,or other required labels.The certificate shall list the unless outdoor air quality is very poor."Manual controls shall flow rate determined from the delivered airflow of the whole- be readily accessible by the occupant. house mechanical ventilation system as installed and the type 3.Whole-house ventilation systems shall be configured to of mechanical whole-house ventilation system used to comply with Section M1505.4.3.1. See Item 109 operate continuously except where intermittent off controls and sizing are provided in accordance with Section 102.INTERMITTENT WHOLE HOUS M1505.4.3.2. VENTILATION INTEGRATED WITH A FORCED-AIR SYSTEM, (Make-Up air through the furnace): 101.- OLE-HOUSE VENTILATION SYSTE USING M1505.4.1.5 Furnace integrated supply. Systems using space EXHAUST FANS:IRC M1505.4.1.2 Exhaust fans. heating and/or cooling air handler fans for outdoor air supply Exhaust fans required shall be ducted directly to the outside. distribution are not permitted.Exception:Air handler fans shall Exhaust air outlets shall be designed to limit the pressure have multi-speed or variable speed supply airflow control capability difference to the outside and equipped with backdraft dampers with a low-speed operation not greater than 25 percent of the rated or motorized dampers in accordance with the Washington supply airflow capacity during ventilation only operation. Outdoor 33 air intake openings must meet the provisions of Sections the override automatically returns automatic control to its normal R303.5 and R303.6 and must include a motorized damper that is operation within 24 hours activated by the whole-house ventilation system controller. The motorized damper must be controlled to maintain the outdoor airflow 106.AIR LEAKAGE TESTING.WSEC R402.4.1.2 The intake airflow within 10 percent of the whole-house mechanical building or dwelling unit shall be tested for air leakage. exhaust airflow rate. The flow rate for the outdoor air intake must be Testing shall be conducted in accordance with RESNET/ICC tested and verified at the minimum ventilation fan speed and the 380,ASTM E779,or ASTM E1827.Test pressure and leakage maximum heating or cooling fan speed. The results of the test shall rate shall comply with Section R402.1.3.A written report of be submitted and posted in accordance with Section M1505.4.1.7. the test results,including verified location and time stamp of 101INTFRMITTENT WHOLE HOUSE the date of the test,shall be signed by the testing agency and VF.NTTLATION USING A SUPPLY FAN. provided to the building owner and code official.Testing shall M1505.4.1.3 Supply fans.Supply fans used in meeting the be performed at any time after creation of all penetrations of requirements of this section shall supply outdoor air from the building thermal envelope.Once visual inspection has intake openings in accordance with International Mechanical confirmed air sealing has been conducted in accordance with Code Sections 401.4 and 401.5.When designed for Table R402.4.1.1,operable windows and doors manufactured intermittent off operation,supply systems shall be equipped by small business are permitted to be sealed off at the frame with motorized dampers in accordance with the Washington prior to the test.Testing of single-family dwellings and State Energy Code. Supply fans shall be tested and rated in townhouses shall be conducted in accordance with accordance with the airflow and sound rating procedures of RESNET/ICC 380.Test pressure and leakage rate shall the Home Ventilating Institute(HVI 915,HVI Loudness comply with Section R402.1.3.1. Testing and Rating Procedure,HVI 916,HVI Airflow Test 107.C"FRTIFTCATE.WSEC R401.3 A permanent certificate Procedure,and HVI 920,HVI Product Performance Certification Procedure,as applicable).Where outdoor air is shall be completed by the builder or other approved party and provided by supply fan systems the outdoor air shall be posted on a wall in the space where the furnace is located,a filtered.The filter shall be accessible for regular maintenance utility room,or an approved location inside the building. and replacement.The filter shall have a Minimum Efficiency When located on an electrical panel,the certificate shall not Rating Value(MERV)of at least 8. cover or obstruct the visibility of the circuit directory label, service disconnect label,or other required labels.The 104.wHo F HOUSE VENTILATION USING HEAT certificate shall indicate the following: RECOVERY VENTILATION:Heat Recovery ventilation 1.The predominant R-values of insulation installed in or on systems shall be sized and installed in accordance with ceiling/roof,walls,foundation(slab,below grade wall,and/or manufacturer's instructions and in accordance to WAC floor)and ducts outside conditioned spaces. 403.4.6. The minimum flow rating shall not be less than that 2.U-factors for fenestration and the solar heat gain coefficient specified by the code. (SHGC)of fenestration.Where there is more than one value for each component,the certificate shall indicate the area 105.LIGHTING: IECC/WSEC R404. weighted average value. R404.1 Lighting.equipment.All permanently installed 3.The results from any required duct system and building envelope air leakage testing done on the building. lighting fixtures,excluding kitchen appliance lighting fixtures, 4.The results from the whole-house mechanical ventilation shall contain only high-efficacy lighting sources. system flow rate test. R404.1.1 Exterior lighting.Connected exterior lighting for 5.The types,sizes and efficiencies of heating,cooling,whole- residential buildings shall comply with Section C405.5. house mechanical ventilation,and service water heating Exceptions: Solar-powered lamps not connected to any appliances.Where a gas-fired unvented room heater,electric electrical service. furnace,or baseboard electric heater is installed in the R404.1.2 Fuel gas lighting equipment.Fuel gas lighting residence,the certificate shall list"gas-fired unvented room systems shall not have continuously burning pilot lights. heater," "electric furnace" or"baseboard electric heater,"as R404.2 Interior lighting controls.Permanently installed appropriate.Efficiency shall not be listed for gas-fired interior lighting fixtures shall be controlled with either a unvented room heaters,electric furnaces or electric baseboard dimmer,an occupant sensor control or other control that is heaters. installed or built into the fixture.Exception:Lighting controls 6.Where on-site photovoltaic panel systems have been shall not be required for the following: 1.Bathrooms.2.Hallways.3. installed,the array capacity,inverter efficiency,panel tilt, Lighting designed for safety or security. orientation and estimated annual electrical generation shall be R404.3 Exterior lighting controls.Where the total noted on the certificate. 7.The code edition under which the structure was permitted, permanently installed exterior lighting power is greater and the compliance path used. than 30 watts,the permanently installed exterior lighting The code official may require that documentation for any shall comply with the following: 1.Lighting shall be required test results include an electronic record of the time, controlled by a manual on and off switch which permits date and location of the test.A date-stamped smart phone automatic shut-off actions.Exception:Lighting serving photo or air leakage testing software may be used to satisfy multiple dwelling units.2.Lighting shall be automatically shut off this requirement. when daylight is present and satisfies the lighting needs.3.Controls that override automatic shut-off actions shall not be allowed unless 34 108.FIRE ACCESS: Mason County Code Chapter 14.17 Standards for Fire Apparatus Access Roads. All roads,driveways,or other means of access serving structures,facilities,buildings,or portions of buildings hereafter constructed,altered,moved into or within the jurisdiction and developed under permit from Mason County shall meet the requirements of this chapter.Inability to meet these requirements may result in additional fire prevention measures(I.E.fire sprinklers)being required. 2021 CODE RESOURCES International Residential Code Washington State Energy Code International Mechanical Code . . Inspection Readiness-Jobsite Requirements MASON COUNTY CONVAUNI1'Y SERVICES (International Building Code- 104 & 110) (International Residential Code- R104 & R109) The Mason County Building Department enforces regulations set forth in the International Building Code-Sections 104 & 110 and International Residential Code-Sections R104 &R109. The following information is developed to assist-our customers with understanding inspection requirements.The goal of this operational policy is to assist our customers with understanding the specific requirements of application of the regulations related to the inspection process. This information is provided so that our customers may plan their construction project more effectively and move forward without unnecessary delays, additional costs associated with fines or other constraints. Requirements for inspection access and readiness: ("Shall" means this item is required for the inspection to take place. If the inspection is determined not to be ready; there may be a reinspection fee assessed • The site address shall be posted or displayed, visible from the right of way, and match the address on the issued permit. • A locked gate or gated community access code must be provided and not prevent access to the job site (please provide information to staff at time of inspection scheduling). • The job shall be ready for inspection when the Building Inspector arrives. When access to area of inspection is hazardous (including inclement weather conditions) or unsuitable and cannot be rectified in a reasonable time, the inspector may cancel inspection and leave notification for inspection to be re-scheduled when access can be safely granted. Dogs or other pets must be restrained during time of inspection. Approved"Job or File" copy of plans and documents matching the field inspection permit card/s and the permit number requested for inspection, shall be on the jobsite and available for the inspector at time of inspection. Failure to provide approved documents may result in cancelation or delay your inspection. Substantial deviation from the approved set of plans must first be approved by the Community Services Department. Any changes to the plans must be submitted and approved by the County rp for to inspection. All approved revisions are to be on site at the time of inspection. Required special inspections and 3rd party reports shall be up to date and completed. The special inspection reports must be made available to the inspector at the time of inspection, unless other arrangements have been made in writing before the inspection. The owner, contractor, or owner's agent must be present at the site for inspections. All inspections must be represented by an adult, County staff will not enter a building with an unattended minor. The work to be inspected must be complete and accessible for inspection, including any ladder or other device needed to ensure access to the inspection area. Any access equipment must be installed/used in a safe manner, including ladders being secured and of sufficient length and strength as required by safety statutes. Corrections from a previous correction notice/s, shall be completed unless specifically approved by the inspector. 1 Required Inspections: The following is a list of required inspections for most building projects. Inspection requests should be grouped into these categories whenever possible. Other inspections, including special inspections, may be required to ascertain compliance with the building code. Note: A pre-construction meeting with the County may be required on commercial, multi-family and complex residential projects.Additionally, it is recommended that property owners who are unfamiliar with methods of construction meet with their Inspector prior to the start of construction for an on-site consultation. Please call our office between 8:00 a.m. and 3:00 p.m. to schedule a pre-construction meeting. • TSEC-Temporary Sediment Erosion Control measures shall be in place and inspected prior to any other inspections. • Building Setback Verification: Building Setbacks are to be staked with a string line in place prior to foundation/footing inspection. Proper verification of clearance from any setbacks or critical zones and buffers, shall be verifiable. If the building setbacks cannot be verified, the County reserves the right to request that a professional survey be completed. This will ensure that the structure is built within the approved building envelope. • Foundation/Footing Inspection/Electrical Grounding (UFER): Footing inspection shall be made after excavation to suitable subgrade has been made, all forms are level and secured in place, required horizontal and vertical reinforcement is tied/chaired in place per plans. All footing penetrating bolts, or hold-downs are installed, all proper clearances from the reinforcement to ground are acceptable, and UFER grounding method is,in place per current edition of the NFPA 70/National Electrical Code. • Foundation/Stem-wall Inspection: Stem-wall inspection shall be made after all forms are constructed and required reinforcement steel, seismic hold down restraints, and seismic anchor bolts are set in place at all designed shear walls per approved plans. Foundation low point drain sleeves must be in place. Any 3rd party special inspections must be completed prior to inspection.Any special reports shall be provided to the inspector at the time of inspection. Concrete shall not be poured/placed until the County inspector has signed the job card. • Concrete Slab and Associated Item/s Inspection: Inspection shall be made after all underground drain/waste/vent and water supply plumbing has been tested, electrical conduit approved, mechanical ducts, hydronic systems, insulation, vapor barrier, required steel re-enforcement, and any other items are installed per specifications on the approved plans. The County building inspector must sign the job card before any concrete is poured/placed. • Lowest floor elevation: In flood hazard areas, prior to placement of the lowest floor, including the basement, and prior to any vertical construction, an elevation certification required by the County shall be provided. Any questions must be directed to the inspector related to flood zone compliance prior to acting on construction installations. • Under-floor Frame Inspection:Vapor barrier, framing members,joists, post& beams, gussets, and hardware shall be installed per plan engineering and/or manufacturers recommendation. Any point loads shall be installed, and all structural blocking required for shear and bearing walls shall be in place. Sub-floor sheathing is not to be installed until inspection of the underfloor has been signed off on the job card. • Exterior Shear Inspection: Shall be made after all exterior wall sheathing is attached and all specified shear walls have had the perimeter of each panel and the field nailed per the shear-wall instructions. All panels shall be nailed with the appropriate nail size and nailed flush, without fracturing the surface of the shear panel. If excessive fracturing of shear sheathing is apparent; re-nailing or a letter of approval from the engineer of record may be Inspection Readiness-Jobsite Requirements 2 1 P a g e Masnn ( nunty VVA required. All shear blocking, drag struts, crush blocks and shear straps/clips shall be nailed and attached according to the shear-wall schedule. Note: All exterior shear panel types and truss drag struts are to be identified with bright, identifiable paint or other suitable markings, prior to the inspector's arrival. • Interior Shear: Shall be made after all panels have been placed and nailed accordingly to the shear-wall schedule. All hardware necessary for shear transfer shall be attached per plans and in place at time of inspection. First side of double-sided shear walls may be attached and inspected at first interior shear-wall inspection. The second side of double-sided shear-walls are to be inspected after insulation, but before drywall. • Hold-downs: Shall be inspected for proper installation according to the manufacturer's specifications and any applicable engineering requirements. Hold down bolts shall be identified by the Architect or Engineer of record and the type and size of bolt specified. Note: Special Inspection is required for all retrofit, epoxy hold-downs unless otherwise approved prior to installation. Proper procedure for installation must be observed and recorded by an approved 3ro party and a report provided to the County Inspector at time of hold-down inspection. • Plumbing inspection: Shall be made after all plumbing is in place and under pressure, ready for inspection. All drains, waste, and venting (DWV) shall be filled completely with water and tested with a minimum 10' head test for 15 minutes or air tested at 5 psi. for 15 minutes. Plastic DWV not allowed to be tested with air. All supply lines shall be tested with water at 50 psi. or tested at working pressure for 15 minutes. All supports shall be in place, along,with all protective nail plates where applicable. • Mechanical Inspection: Shall be made after the furnace/air handler/boiler, ducting, venting, and refrigerant lines have been roughed in. All supports, straps, and protective plates shall be in place. In-floor heating:All hydronic lines shall be under pressure of 100 psi. for 15 min. for testing, or under manufacturers recommended testing pressure. All boiler systems shall be roughed-in and tested according to the manufacturers recommendations. • INTIEXT Gas piping: Interior-Interior gas piping shall be installed and properly secured per code (Ref Chapter 61 Fire Code and Table 6104.3 for location of LP gas Containers). The piping shall be stubbed outside to the exterior of the building and tested under a min. 3 psi. for 10 minutes. LP gas shall be tested at no more than 1-1/2 times the working pressure, but not less than 3 psi. The gauge high reading shall be no more than 5 times the test pressure. Example: If the LP gas is tested at 3 psi. the gauge maximum can only be a 15 psi. gauge. Testing is the same for exterior piping. The tank shall be placed in the appropriate location. The filling point of the LP tank shall be a minimum of 5 feet in a horizontal plane or below from windows and openings under the building, and 10 feet from the filling point to sources of combustion or mechanical intakes. Caulk/Seal: All penetrations at the top and bottom plates shall be sealed to prevent fire from drafting. Other areas required to be sealed are at the top of furred-out walls and every ten feet horizontally.Any concealed spaces must be fire blocked and sealed from fire drafting.Any concealed space that is larger than 1,000 sq. ft. must be draft-stopped, and any penetrations sealed. The bottom plate of every exterior wall must have a bead of caulking or approved sealant on the inside to prevent drafting.All windows and doors must be sealed around the perimeter by an approved sealant. All penetrations through the building walls must be sealed.All these areas must be sealed prior to inspection. Rough Framing Inspection: Shall be made when the structure is weather-tight. The roof and all exterior walls shall be wrapped with the appropriate water resistive barrier and all windows and doors shall be in place at the time of framing inspection.All rough plumbing, mechanical, electrical, and any other required inspections or 3rd party reports are to be completed at this time. Framing, fire blocking, bracing, point load paths, post and beams and hardware are to be installed per code, plans, and manufacturer's specifications. All caulk/seal penetrations are completed. Inspection of the truss system is mandatory, and a copy of the engineering shall be on-site at the time of inspection. Note: Fire Sprinkler System inspection to be called in separately and scheduled through the Fire Marshal and must be approved before rough framing inspection is scheduled. Roof Inspection: Shall be made after bracing materials for roof structure, exterior wall sheathing/shear walls, shear blocking, roof blocking, point load members, perimeter blocks, squash/crush blocks and floor sheathing are installed, and all other structural connections are in place (Beams, straps, clips, and misc. hardware). NOTE: Roof nail inspections are at the inspectors'discretion; all roof drag-nailing, straps or special nailing layout shall be Inspection Readiness-Jobsite Requirements 3 1 P a g e Mason Countv WA marked with identifiable paint in order to readily see the nailing or as specified by the inspector. Inspectors will use discretion and maintain personal safety at all times related to entering onto a roof. If entering onto a roof; appropriate and required fall protection must be utilized as required by WA Statutes. • Insulation inspection: Insulation is installed after rough framing inspection is approved. Written note from the building inspector such as"OK to insulate" or"OK to insulate partial areas"with conditions, locations, and listed correction items that are outstanding, must be able to be re-inspected without removing insulation. Insulation inspection shall be made after all insulation is secured in-place and installed as required per the WSEC energy compliance documentation, requirements, and installation standards. • Lath, gypsum board and gypsum panel product inspection: Note: For Fire Rated Assemblies in garages with living area above, the screw pattern and installation method for gypsum ceiling is to be fire-rated type X on the ceiling installed perpendicular, with all fasteners at 6"on center and fully covered gypsum on the walls. If using lath, lath inspection shall be signed off on the job card before stucco is applied and each layer shall be inspected unless otherwise agreed upon PRIOR to the inspection. • Fire-and smoke-resistant penetrations: Protection of joints and penetrations in fire-resistance-rated assemblies, smoke barriers and smoke partitions shall not be concealed from view until inspected and approved. • Special Inspections: All special inspections/structural observation services, when required, must be completed with daily reports available to the County Building Inspector and written approval given to Building Inspector at time of inspection or as otherwise agreed. Special inspections are to be completed prior to scheduling a Building Inspector and a report provided per the special inspection agreement developed during plan review. • Other departments-All other departments shall be satisfied for their respective part of the construction process. All requests and conditions of the permit shall be met as required during the project and approved by each department before final inspection will be granted. (READ ALL CONDITIONS ON THE PERMIT CARD) • Final Inspection: Shall occur after construction is complete and before the building is occupied. The building must be unlocked, or arrangements made with the Building Inspector to access the building. All appliances, electrical fixtures, convenience outlets, switches and plates must be in place and L&I Electrical Inspection finalized. A ladder is to be provided for access to the attic and under-floor spaces. An energy compliance documentation is to be filled out and placed within 3 feet of the electrical panel. Note: If special inspections are required, then a final summary special inspection report must be submitted for review and approval. All final paperwork is required to be onsite at time of final or as otherwise arranged and a final report made to the County. If not completed prior to final, and when required,the following final documents must be provided before final inspection will be provided: (See Closeout Documents Bulletin) • Structural Observation Final Summary Report • Special Inspection Final Summary Reports • Geo-technical Final Summary reports • Air Balance Reports/blower door test/s Inspection Readiness-Jobsite Requirements 4 P a g e 1\&:mnn ( nunty\A1A FOUNDATIONS BOTTOM(SOLE)PLATE ATTACHMENT PER V"MIN CONCRETE SECTION R403.1.6 SLAB PER SECTION R506.1 WEAR NG ALL MIN CLEARANCE PER SECTIONS 3'/."MIN CONCRETE SLAB R404.1.6AND 4•v, o 00,e PER SECTION R506.1 R317.1 TYP 12'MIN DEPTH - A' '�' •'o.o o '�o'?'a o OR GREATER FOR o FROST PROTECTION o° °.;•° a� o.o`;o• = PER SECTIONS R403.1.4 AND R403.1.4.1 TYP �y W MONOLITHIC SLAB-ON-GROUND THICKENED SLAB-ON-GROUND FOOTING WITH TURNED-DOWN FOOTING 2 AT BEARING WALLS OR BRACED WALL LINES 1 SCALE:NOTTO SCALE SCALE:NOTTO SCALE 3'W MIN CONCRETE SLAB PER SECTION R506.1 INTERIOR MIN CLEARANCE PER SECTIONS R404.1.6 AND- R317.1 TYP �CMU STEM WALL CMU STEM WALL P P 12"MIN DEPTH PER P P SECTION R403.1.4 OR GREATER FOR FROST PROTECTION oo; ~ a'•' PER SECTION R403.1.4.1 TYP W W SLAB-ON-GROUND WITH BASEMENT OR CRAWL SPACE WITH MASONRY STEM WALLAND SPREAD FOOTING MASONRY WALLAND SPREAD FOOTING 3 SCALE:NOTTO SCALE 4 SCALE:NOT TO SCALE CONCRETE STEM WALLTHICKNESS PER SECTION R404.1.3 INTERIORI INTERIOR � ° IIII •R •o:o-. CONCRETE STEM WALL P •D Q P _ '?d,•a CONCRETE STEM AND °•�•�� FOOTING COMBINED o b:o.'o•.. (MONOLITHIC POUR) CONCRETE FOOTING PLACEDFy� PRIOR TO STEM BASEMENT OR CRAWL SPACE WITH BASEMENT OR CRAWL SPACE WITH CONCRETE WALL AND SPREAD FOOTING FOUNDATION WALL BEARING DIRECTLY ON SOIL 5 6 SCALE NOT TO SCALE SCALE:NOT TO SCALE For SI: 1 inch=25.4 mm. W=Width of footing,T=Thickness of footing and P=Projection per Section R403.1.1 NOTES: a.See Section R404.3 for sill requirements. b.See Section R403.1.6 for sill attachment. c.See Section R506.2.3 for vapor barrier requirements. d.See Section R403.1 for base. e.See Figure R403.1.3 for additional footing requirements for structures in SDC Do,D,and DZ and townhouses in SDC C. f. See Section R408 for under-floor ventilation and access requirements. FIGURE R403.1(1) PLAIN CONCRETE FOOTINGS WITH MASONRY AND CONCRETE STEM WALLS IN SDC A,B AND C°'b'`'d'°'f 2018 INTERNATIONAL RESIDENTIAL CODE® 95 FOUNDATIONS PRESSURE-PRESERVATIVE-TREATED FLASHING 2 x 6 IN.STUD INSULATED FIELD-APPLIED 2 x 6 IN.TOP PLATE VAPOR BARRIER AS APPROPRIATE AND WARM SIDE 2 x 6 IN.TOP PLATE-:j 2-IN.AIR GAP 1-IN.-THICK PRESSURE-PRESERVATIVE- TREATED LUMBER OR PLYWOOD STRIP PROTECTING TOP OF POLYETHYLENE FILM FINISH GRADE SLOPE 1/ IN, PER FOOT,MIN.6 FT.FROM WALL PRESSURE-PRESERVATIVE- TREATED PLYWOOD 4 FT.(MAX.BACKFILL) \\\"///\\\`///i\\\`///�\ (SEE TABLE R404.2.3) 6 MIL POLYETHYLENE FILM 6 MIL POLYETHYLENE FILM / ON CRUSHED STONE OR aodoao I//// GRAVEL BACKFILL MIN.3.5-IN.CONCRETE SLAB WITH VAPOR BARRIER AND OPTIONAL 1-IN.SCREED BOARD -° PRESS URE-PRESERVATIVE- _ .--_. o TREATED2x6IN.BOTTOM °°°o°0 Do \\/7// PLATE 6 IN. PRESS URE-PRESERVATIVE- 4 IN. 4 IN. TREATED 2 x 8 IN.FOOTING 4 IN.GRAVEL OR CRUSHED 16 IN. PLATE STONE FILL UNDER FLOOR (SEE SECTION R403.2) For 5I: 1 inch=25.4 n m,1 foot=304.8 mrr 1 mil=0.0254. FIGURE R403.1(2) PERMANENT WOOD FOUNDATION BASEMENT WALL SECTION 96 2018 INTERNATIONAL RESIDENTIAL CODE`S FOUNDATIONS 0 PRESSURE-PRESERVATIVE-TREATED FLOOR JOIST FIELD-APPLIED 2 x 61N.TOP PLATE FLASHING 2 x 6 IN.TOP PLATE 8 IN.MIN. FINISH GRADE SLOPE'/,IN. 18 IN.MIN. PER FOOT,MIN.6 FT.FROM WALL 4 FT MAX'\\\ PRESSURE-PRESERVATIVE- 6 MIL POLYETHYLENE FILM \�� TREATED 2 x 6 IN.STUD WALL /\\M \l\\\'//\\\ PRESSURE-PRESERVATIVE- \\\V//i\\\`///�\\\� '/ TRATED PLYWOOD (SEE TABLE R404.2.3) PRESSURE-PRESERVATIVE- TREATED 2 x 8 IN.BOTTOM PLATE 6 IN •O a8 0.O a•O PRESSURE-PRESERVTIVE- \\ TREATED 2 x 8 IN.FOOTING PLATE 4 IN. 4 IN. BELOW FROST LINE 6 IN.GRAVEL OR CRUSHED STONE (SEE SECTION R403.2) 16 IN. For SI: I inch=25.4 min,1 foot=304.8 nun,1 mil=0.0254 mm. FIGURE R403.1(3) PERMANENT WOOD FOUNDATION CRAWL SPACE SECTION 2018 INTERNATIONAL RESIDENTIAL CODE® 97 FOUNDATIONS BEARING WALL OR CONSTRUCTION JOINT BRACED WALL LINE #4 MIN HORIZONTAL SILL OR BOTTOM(SOLE))PLATE BAR TOP AND BOTTOM 3'/i MIN PER SECTION R40ATTACHMENT PERASHERSECTION CONCRETE R403.1.3.3 PER S.6 SECTION 3 x 3 WASHERS SLAB PER PER SECTION R602.11.7 SECTION R506.1 MIN CLEARANCE 3'/z'MIN CONCRETE PER SECTIONS SLAB PER SECTION R404.1.6 AND R506.1 R317.1 v ^.o.o v.• h:a��o a:oo,. .o o-p . 12'MIN DEPTH o o:•:t�a:�.' '"''d:"c.: o•' ". OR GREATER FOR a•. •veop.. �.. d . FROST PROTECTION oo•.�a PER SECTIONS R403.1.4 •��: '' #3 MIN v.. AND R403.1.4.1 p'' W @ 48"O.C.VERTICAL DOWELS WITH MIN REINFORCEMENT 12"MIN ''' STANDARD HOOK PER SECTION W PER SECTION EACH END PER R403.1.3.3 A R403.1.4.2 SECTION R403.1.3.3 W SLAB-ON-GROUND WITH DOWELS FOR SLAB-ON-GROUND n MONOLITHIC TURNED-DOWN FOOTING - WITH TURNED-DOWN FOOTINGS..- --.- _ SCALE:NOT TO SCALE SCALE NOTTO SCALE SILL OR BOTTOM(SOLE)PLATE 3'W MIN CONCRETE SLAB ATTACHMENT PER SECTION PER SECTION R506.1 (1)#4 HORIZ.IN TOP 12" R403.1.6 W/3 x 3 WASHERS PER SECTION R602.11.1 #4 DOWEL ENTER P®SECTION MIN CLEARANCE R403.1.3.2 14'MIN INTO STEM- PER SECTIONS •. o ., WALL WITH STANDARD R404.1.6 HOOK PER SECTION AND R317.1 R608.5.4.5 (1)#4 HORIZ.IN TOP IT ° W MIN CMU STEM- W MIN CMU STEM 12'MIN DEPTH WALL,SOLID-GROUTED 7�/ WALL,SOLID GROUTED PER SECTION R403 1.4 p PER SECTION R404.1.4.1 p PER SECTION R404.1.4.1 OR GREATER FOR FROST PROTECTION #4 DOWEL @ 48"ON- PER SECTION CENTER PER SECTION v R403.1.4.1 ~ 04o R403.1.3.2,14"MIN INTO f tea' STEM-WALL WITH STANDARD HOOK PER W SECTION R608.5.4.5 W REINFORCEMENT PER SECTION R403.1.3.2 SLAB-ON-GROUND WITH BASEMENT OR CRAWL SPACE WITH (�MASONRY STEM WALL AND SPREAD FOOTING ,1�,11 MASONRY STEM WALL AND SPREAD FOOTING scALE NOTTo SCALE CONCRETE STEM WALL v SCALE:NOT TO SCALE THICKNESS PER SECTION CONCRETE R404.1.4 2 STEM WALL MIN CLEARANCE �1)#4 CONT PER SECTION THICKNESS PER SECTIONS 03.1.3.1 PER SECTIMIN ONS E R404 1PER SECTION R404.1.6 ° #4 DOWEL @ 48"ON R404.1.6 AND R317.1 �7 CENTER PER SECTION AND R317.1 (1�#4 CONT TOP R403.1.3,1 14'MIN INTO '; PR SECTION STEM WALLAND R403.1.3.1 12"MIN DEPTH ° P STANDARD HOOK 12"MIN DEPTH P P PER SECTION R403 1.4 PER SECTION R608.5.4.5 PER SECTION off. OR GREATER FOR R403.1.4 OR FROST PROTECTION ' ° e° GREATER ~ (1)#4 CONT PER SECTION CONCRETE FOOTING FOR FROST AT BOTTOM R403.1.4.1 PLACED PRIOR TO STEM PROTECTION PER PER SECTION W WALL SECTION R403.1.4.1 W R403.1.3.1 (1)#4 CONT PER SECTION BASEMENT OR CRAWL SPACE 03.1.3.1 BASEMENT OR CRAWL SPACE WITH MONOLITHIC �1 CONCRETE STEM WALL AND SPREAD FOOTING /1 CONCRETE STEM WALL AND SPREAD FOOTING SCALE NOT_SCALE O SCALE:NOT TO SCALE W=Width of footing,T=Thickness of footing and P=Projection per Section R403.1.1 NOTES: a. See Section R404.3 for sill requirements. b. See Section R403.1.6 for sill attachment. c. See Section R506.2.3 for vapor barrier requirements. d. See Section R403.1 for base. e. See Section R408 for under-floor ventilation and access requirements. f. See Section R403.1.3.5 for reinforcement requirements. FIGURE R403.1.3 REINFORCED CONCRETE FOOTINGS AND MASONRY AND CONCRETE STEM WALLS IN SDC Do,D,AND D2a,b,°,d,e,t, 98 2018 INTERNATIONAL RESIDENTIAL CODE® FOUNDATIONS INSULATION DETAIL FLASHING PER SECTION R703.8 SLAB-ON-GROUND FOUNDATION FLOOR INSULATION PROTECTION PER SECTION 11403.3.1 PER SECTIONS R403A AND R506 SLOPE FINAL GRADE PER SECTION R403.3.2 Y D 12 IN.MAX. % \\\`///i 12 IN.MIN. 1 --1•• •p1 - •O 1 o C p � 7�'/// W. NOMINAL IN.SCREENED AND VERTICAL WALL INSULATION' WASHED GRAVEL OR CRUSHED STONE DRAINED PER SECTION R403.3.3 HORIZONTAL INSULATION' HORIZONTAL INSULATION PLAN FOUNDATION PERIMETER �C A B For SI: 1 inch=25.4 rum. a. See Table R403.3(1)for required dimensions and R-values for vertical and horizontal insulation and minimum footing depth. FIGURE R403.3(1) INSULATION PLACEMENT FOR FROST-PROTECTED FOOTINGS IN HEATED BUILDINGS TABLE R403.3(1) MINIMUM FOOTING DEPTH AND INSULATION REQUIREMENTS FOR FROST-PROTECTED FOOTINGS IN HEATED BUILDINGS' AIR FREEZING MINIMUM FOOTING VERTICAL HORIZONTAL INSULATION HORIZONTAL INSULATION DIMENSIONS R-VALUE`' PER FIGURE R403.3(1)(inches) INDEX DEPTH,D INSULATION C days)" (Inches) R-VA Along walls At comers A B 1,500 or less 12 4.5 Not required Not required Not required Not required Not required 2,000 14 5.6 Not required Not required Not required Not required Not required 2,500 16 6.7 1.7 4.9 12 24 40 3,000 16 7.8 6.5 8.6 12 24 40 3,500 16 9.0 8.0 11.2 24 30 60 4,000 16 10.1 10.5 13.1 24 36 60 For SI:1 inch=25.4 rum,°C=[(-F)-321/1.8. a. Insulation requirements are for protection against frost damage in heated buildings.Greater values could be required to meet energy conservation standards. b. See Figure R403.3(2)or Table R403.3(2)for Air Freezing Index values. c. Insulation materials shall provide the stated minimum R-values under long-term exposure to moist, below-ground conditions in freezing climates. The following R-values shall be used to determine insulation thicknesses required for this application:Type II expanded polystyrene(EPS)-3.2 R per inch for vertical insulation and 2.6 R per inch for horizontal insulation;Type IX expanded polystyrene(BPS)-3.4 R per inch for vertical insulation and 2.8 R per inch for horizontal insulation;Types IV,V,VI,VII,and X extruded polystyrene(XPS)-4.5 R per inch for vertical insulation and 4.0 R per inch for horizontal insulation. d.Vertical insulation shall be expanded polystyrene insulation or extruded polystyrene insulation. e. Horizontal insulation shall be expanded polystyrene insulation or extruded polystyrene insulation. 2018 INTERNATIONAL RESIDENTIAL CODE% 102 MASON COUNTY DEPARTMENT OF COMMUNITY SERVICES Building Division 400 www.co.mason.wa.us Mason County Bldg.8;615 West Alder Street, Shelton,WA 98584 Shelton(360)427-9670 Belfair(360)275-4467 Elma.(360)482-5269 Exterior (WSP) Interior(IWSP) Minimum 4'0" panel width Minimum 4'0" panel width when Maximum 12' height. 1/2" gypsum board installed on 2 sides of the braced wall 3/8" APA rated sheathing panel. Secure with 6d common nails Minimum 8'0" panel width when 6" o.c. at edges, 12" o.c. in the 1/2" gypsum board is placed on field, & 6" o.c. at gable end walls. one face of the braced wall Align vertical joints over studs. panel. 1-1/2" blocking at horizontal Maximum 10' height for joints. addition heights see IRC table 602.10.5 Extend sheathing to foundation sill plate. Secure with 6d drywall nails 7" edges (including top and Exterior braced wall lines shall bottom plates) 7" field. have a braced wall panel located at each end of the wall line. Align vertical joints over studs Exception: When a BWP begins 1 1/2" blocking at horizontal no more than 10"' from the end joints. one of the following is allowed: Support IBWP as specified in (1) Exterior braced wall lines shall IRC Section R602.10.8 and have a braced wall panel for R602.10.9 Methods WSP, CS-WSP, CS- Interior braced wall lines shall G and CS-PF is applied at be fastened to floor and roof each side of the building framing in accordance to Table corner and the (2) 24"wide R602.3.1(1) and to required Iti ¢ -ram`} ;; Y ' ` foundations in accordance with ..,. .. , panels at the corner shall e .�� : �., � ::,Ly . attached in accordance with Section R602.11.1 (see figure R602.10.7 foundation details). 1800#uplift capacity tie- In addition, floor joists; parallel (2) The end of each braced wall down device. See panel closest to the corner exception#2,exterior WSP to the top plate shall be toe- shall have an 1800# capacity nailed to the top plate with at tie down device fastened to least 8d nails spaced a the stud at the edge of the maximum of 6" o.c. Top plate braced wall panel closest to laps shall be face-nailed with at the corner and to the least (8) 16d nails on each side foundation or framing below. STANDARD 4'0" EXTERIOR OR INTERIOR The tie down device shall be BRACED WALL PANEL WSP or IWSP installed in accordance with manufacturer specifications. IRC R602.10.4 MASON COUNTY DEPARTMENT OF COMMUNITY SERVICES Building Division www.co.masonma.us Mason County Bldg.8,615 West Alder Street, Shelton WA 98584 Minimum 2'8" Minimum 2'10" panel width panel width Maximum 9'0" ' 218" or 2'10" Maximum 10'0" height height FOR PANEL SPLICE OF NEEDED) U114 IV WOOD AOlOtNNG PANELEDGES SHALL MEET STRUCTURAL PANEL OVERAND SE FAST04ED TO COU M ON SHEATHING ON ONE FACE FRAk[INGt of s t° MN.2 X4 FRAMNGMIN. So COMMON OR GALV.SOX NAILS�5' a5 DOUBLE STUDS REOUIRED. O.C.AT PANEL EDGES FOR SINGLE STORY AND @,r 0.0-PANEL EDGES FORTHE FIRST OF 2$TORIes a (2)HQLO-DOWN OR(2)$TRAP TYPE STUDS UNDER KEADER AS REG UIRED ANCHORS PER TABLE R502.T G 1(ON or EACH 8H0t4N FOR CLARCTY), STRAP•TYPEANCHORS SHALLSE PERMITTED TD BE ATTACHED OVER THE'A`OODSTRUCTURAL PANEL gD CO141AO14 OR GAIN.BOX NAILS _ Q.G.AT 1WTERIOR SUPPORTS PANEL 14UST REATTACHED- TO CONCRETE FOOTIN3 OR CotdCRETEMINDATION MIN,RSTOORCING OF FOUNDATION, WAL4.CONT"JOVS OVER ONE$4 BAR TOP AND BOTTOW LAP BRACEDwALLLINE BARS IVWNIMUM- MINIMUM FOOTNQ:SZE UNDER OPEN N0IS 92'X 12'.A TUR NED•LO` N (2)17D1AMOERANCHOR SSSHAILBE PER0T0AT DOOR BOLTS D BETWEEN 0'AND IT OF EACH END OF OPEIYtNG3. THE S M OS NT ALTERNATE BRACE WALL PANEL-METHOD ABW FIGURE R602.10.6.1 All alternate braced panels shall be supported directly on a foundation, continuous across the entire length of the braced wall line. Minimum footing is 12"x12". A turned down slab shall be permitted at door openings. The foundation shall be reinforced with not less than one#4 bar top and bottom. Lap bars 15" min. USE 1800# UPLIFT CAPACITY TIE DOWNS ON SINGLE STORY. USE 3000# UPLIFT CAPACITY TIE DOWNS ON THE FIRST STORY OF A TWO- STORY STRUCTURE. MASON COUNTY COMMUNITY SERVICES DEPARTMENT Community Development-Building Division _ Mason County Bldg.8, 615 West Alder Street, Shelton,WA 98584 www.co.mason.wa.us Shelton(360)427-9670 x352 Belfair(360)275-4467 x352 Elma(360)482-5269 x352 Adjacent to a Door or Window Opening (IRC R602.10.6.2) +-- EXTENT OF HEADER WITH DOUBLE PORTAL FRAMES(TWO BRACED WALL PANELS) EXTENT OF HEADER WITH SINGLE PORTAL,FRAME ' (ONE BRACED WALL PANEL)---`—� 2'-18'FINISHED WIDTH OF OPENING FASTEN KING STUD 't—FOR SINGLE OR DOUBLE PORTAL—'- TO HEADER WITH 6 16D SINKERS x TENSION STRAPPER PONY ALL r +, TABLE R602.10.6.4(ON HEIGHT OPPOSITE SIDE O { •i,_•_` ++ SHEATHING) V. 4.�GL MIN.3 X11%'NET HEADER STEEL HEADER PROHIBITED •s.. ' :'1. IF 14 SPACER IS USED,PLACE ON BACKSIDE OF HEADER I- •aa�_ ; IF NEEDED,PANEL ..... SPLICE EDGES SHALL " p ;; FASTEN SHEATHING TO HEADER WITH 8D ; _g w +' + COMMON OR GALVANIZED BOX NAILS IN 3`GRID OCCUR.OVERAND BE ? FASTEN TOP x ,ni PATTERNASSHOWN + NAILEDTOCOMMON 1 PLATE TO BLOCKING VMHINTHE " + HEADER WITH Yi i• HEADER TO JACK-STUD STRAPPER TABLE MIDDLE 24'OF THE i TWO •^' "°+ R602.10.6.4 ON BOTH SIDES OF OPENING PORTAL-LEG HEIGHT, ROWS OF 16D •" ••+ + ONE ROW OF 3.O.C. .w SINKER NAILS AT OPPOSITE SIDE OF SHEATHING " - NAILING IS REQUIRED ' w ++ ti•, 3'O.C.TYP � _ ew ' +� IN EACH PANEL EDGE fi iYi�—MIN.DOUBLE 244 FRAMING COVERED WITH MIN. i q _ MIN.'!e'WOOD w w� '/a THICK WOOD STRUCTURAL PANEL SHEATHING ;; ' is o •t� �.;,� WITH BD COMMON OR GALVANIZED BOX NAILS AT ++ FRAME CONSTRUCTION-.,,tia.s_ STRUCTURAL. 3'O.C.IN ALL FRAMING(STUDS,BLOCKING,AND " ` '• PANEL SILLS)TYP. SHEATHING •'� Y� i` MIN.DOUBLE 2z4 POST MIN.LENGTH OF PANEL PERTABLE R602.10.5 (KING AND JACK STUD). NUMBER OF JACK STUDS MIN.,)3500 LB STRAP TYPE HOLD-DOWNS PER TABLES R6027(1)S (EMS ED INTO CONCRETE AND NAILED INTO FRAMING) MIN.REINFORCING OF FOUNDATION,ONE#4 BAR MIN.1000 LB.HOLD-DOWN o TOP AND BOTTOM OF FOOTING.LAP BARS 1V DEVICE((FE�MBEDDED a0 MIN' CONCRETE AND NAILED p INTO FRAMING MIN.FOOTING SrZE UNDER OPENING IS 12X12.ATURNED- DOWN SLAB SHALL BE PERMITTED AT DOOR OPENINGS. MW_ (1)'le'DIAMETER ANCHOR BOLT INSTALLED PER SECTION 11403.1.6-Wmi 2X 2'01e PLATE WASHER FRONT ELEVATION SECTION PORTAL FRAME WITH HOLD-DOWNS-METHOD PFH FIGURE R602.10.6.2 Alternate braced wall panels constructed in accordance with one of the following provisions are also permitted to replace each 4-feet of braced wall panel as required by Section R602.10.6 for use adjacent to window or door opening,with a full-length header. 1. In one-story building, each panel shall have a length of not less than 16-inches and a height not more than 10-feet. Each panel shall be sheathed on one face with a single layer of 3/8-inch minimum thickness wood structural panel sheathing nailed with 8d common or galvanized box nails in accordance with Figure R602.10.6.2. The wood panel shall extend up over the solid sawn or glue-laminated header and shall be nailed in accordance to the figure. Use of built-up header consisting of at least two 2"x12"s fastened in accordance with Table R602.3.(1)shall be permitted where approved.The header shall extend between the inside faces of the first full length outer studs of each panel. The clear span of the header between the inner studs of each panel shall not be less than 2-feet and not more than 18-feet in length. A strap with an uplift capacity of not less than 1,000 Ibs shall fasten the header to the side of the inner studs opposite the sheathing.One anchor bolt not less than 5/8"diameter shall be installed in the center of each sill plate.The studs at each end of the panel shall have a tie-down device fastened to the foundation with an uplift capacity of not less than 3,500 lbs.Tie-down devices shall be an embedded strap type, installed in accordance with the manufacturer's recommendations.The panels shall be supported directly on a foundation which is continuous across the entire length reinforced with not less than one-#4 bar top and bottom. 2. In the first story of a two-story,each wall panel shall be braced in accordance with item#1 above, except that each panel shall have a length of not less than 24-inches. WALL CONSTRUCTION the requirements of this section,lateral support shall be 2. For Seismic Design Categories Do, D1 and D., provided for rafters and ceiling joists in accordance where the distance from the top of the braced with Section R802.8 and for trusses in accordance with wall panel to the top of the rafters or roof trusses Section R802.10.3. Roof ventilation shall be provided is 151/4 inches (387 mm) or less, blocking in accordance with Section R806.1. between rafters or roof trusses shall be provided above the braced wall panel in accordance with 1. For Seismic Design Categories A,B and C where Figure R602.10.8.2(1). the distance from the top of the braced wall panel to the.top of the rafters or roof trusses above is 91/4 3.Where the distance from the top of the braced wall inches(235 mm)or less,blocking between rafters panel to the top of rafters or roof trusses exceeds or roof trusses shall not be required.Where the dis- 151/4 inches(387 mm),the top plates of the braced tance from the top of the braced wall panel to the wall panel shall be connected to perpendicular raf- top of the rafters or roof trusses above is between ters or roof trusses above in accordance with one 91/4 inches (235 mm) and 151/4 inches(387 mm), or more of the following methods: blocking between rafters or roof trusses shall be 3.1. Soffit blocking panels constructed in provided above the braced wall panel in accor- accordance with Figure R602.10.8.2(2). dance with Figure R602.10.8.2(1). 3.2. Vertical blocking panels constructed in Exception:Where the outside edge of truss ver- accordance with Figure R602.10.8.2(3). tical web members aligns with the outside face 3.3. Blocking panels provided by the roof of the wall studs below,wood structural panel truss manufacturer and designed in sheathing extending above the top plate as accordance with Section R802. shown in Figure R602.10.8.2(3)shall be permit- panels or other meth- 8d to be fastened to each truss web with three- 3A. Blocking,blocking p 8d nails(21/Z inches X 0.131 inch)and blocking ods of lateral load transfer designed in between the trusses shall not be required. accordance with the AWC WFCM or accepted engineering practice. FULL-HEIGHT BLOCKING CONTINUOUS RIM CONTINUOUS ALONG LENGTH OR BAND JOIST OF BRACED WALL PANEL PERPENDICULAR FRAMING 8d @ 6"O.C.ALONG BRACED WALL PANEL 8d @ 6"O.C.ALONG BRACED WALL PANEL �— BRACED WALL PANEL f---BRACED WALL PANEL 3-16d @ 16"O.C.ALONG 3-16d @ 16"O.C.ALONG BRACED WALL PANEL BRACED WALL PANEL PERPENDICULAR FRAMING FULL-HEIGHT BLOCKING CONTINUOUS RIM CONTINUOUS ALONG LENGTH OR BAND JOIST OF BRACED WALL PANEL For SI: 1 inch=25.4 mm. FIGURE R602.10.8(1) BRACED WALL PANEL CONNECTION WHEN PERPENDICULAR TO FLOORICEILING FRAMING 2018 INTERNATIONAL RESIDENTIAL CODE® WALL CONSTRUCTION- CONTINUOUS RIM ADDITIONAL FRAMING FULL-HEIGHT BLOCKING OR END JOIST MEMBER DIRECTLY ABOVE @ 16'O.C.ALONG BRACED WALL PANEL BRACED WALL PANEL 8d @ 6'O.C.ALONG TOE NAIL 3-8d 8d @ 6'O.C.ALONG BRACED WALL PANEL NAILS AT EACH BRACED WALL PANEL BLOCKING MEMBER BRACED WALL PANEL � BRACED WALL PANEL BRACED WALL PANEL 3-16d @ 16'O.C.ALONG BRACED WALL PANEL 3-16d @ 16.O.C.ALONG 3-16d AT EACH BRACED WALL PANEL BLOCKING MEMBER 2-16d NAILS EACH SIDE ADDITIONAL FRAMING FULL-HEIGHT BLOCKING CONTINUOUS RIM MEMBER DIRECTLY BELOW @ 16'O.C.ALONG OR END JOIST BRACED WALL PANEL BRACED WALL PANEL For SI: 13nch=25.4 mm. FIGURE R602.10.8(2) BRACED WALL PANEL CONNECTION WHEN PARALLEL TO FLOOR/CEILING FRAMING ROOF SHEATHING EDGE NAILING PER TABLE R602.3(1) (TYR) 1 - 1 LO 1 1 N o BLOCKING 2x BLOCKING ui CV 0 it 1 ROOF TRUSSES PER R802.10 SOLID BLOCKING BETWEEN BRACING° NAILING PER RAFTERS ATTACHED TO TOP BRACED WALL TABLE R602.3(1) PLATES WITH 8d @ 6"O.C.ALONG PANEL LENGTH OF BRACED WALL PANEL 6,-0 MAX PROVIDE VENTING PER SECTION R806 (NOT SHOWN) For SI: 1 inch=25.4 mm,1 foot=304.8 mm. For SI: 1 inch=25.4 mm a. Methods of bracing shall be as described in Section R602.10.4. FIGURE R602.10.8.2(1) FIGURE R602.10.8.2(2) BRACED WALL PANEL CONNECTION BRACED WALL PANEL CONNECTION OPTION TO TO PERPENDICULAR RAFTERS PERPENDICULAR RAFTERS OR ROOF TRUSSES WAEL CONSTRUCTION -w-� W HERE AIR GAP AT 70P IS NOT USED,CENTER O O O W.AVAILABLE FOR VENT HOLES o It 1 O 1 1 1 1 O 0 1 1 = Wf3�fd Wf3--�''_ O O O O O O O O PROVIDE VENTING ROOF SHEATHING PER SECTION R806 EDGE NAILING PER TABLE R602.3(1)MP) B BRACING' A �j 1420 VENTING iV O ROOF TRUSSES 2x 2x BL KING ER02.10 BLIC a BRACED WALL BRACING ROOF TRUSSES PANEL BRACED WALL PER R602.10 PANEL NAILING PER TABLE R602-3(1) 61-T MAX- 4 A SECTION B ELEVATION For SI: 1 inch=25.4 mm.1 foot=304.9 mm IL Methods of bracing shall be as described in Section R602.10.4. FIGURE R602.10.8.2(3) BRACED WALL PANEL CONNECTION OPTION TO PERPENDICULAR RAFTERS OR ROOF TRUSSES R602.10.9 Braced wall panel support.Braced wall panel reinforcement sized and located in accordance with support shall be provided as follows: Figure R602.10.9. 1. Cantilevered floor joists complying with Section R602.10.9.1 Braced wall panel support for Seismic R502.3.3 shall be permitted to support braced wall Design Categories Do,Dl and D2. In Seismic Design Categories Do, Di and D2, braced wall panel footings panels. shall be as specified in Section R403.1.2. 2. Raised floor system post or pier foundations sup- R602.10.10 Cripple wall bracing.Cripple walls shall be porting braced wall panels shall be designed in constructed in accordance with Section R602.9 and braced accordance with accepted engineering practice. in accordance with this section. Cripple walls shall be 3. Masonry stem walls with a length of 48 inches braced with the length and method of bracing used for the (1219 mm) or less supporting braced wall panels wall above in accordance with Tables R602.10.3(1) and shall be reinforced in accordance with Figure R602.10.3(3), and the applicable adjustment factors in R602.10.9. Masonry stem walls with a length Table R602.10.3(2) or R602.10.3(4), respectively, except greater than 48 inches(1219 mm)supporting braced that the length of cripple wall bracing shall be multiplied wall panels shall be constructed in accordance with by a factor of 1.15.Where gypsum wall board is not used Section R403.1 Methods ABW and PFH shall not on the inside of the cripple wall bracing,the length adjust- be permitted to attach to masonry stem walls. ments for the elimination of the gypsum wallboard, or 4. Concrete stem walls with a length of 48 inches equivalent, shall be applied as directed in Tables (1219 mm)or less,greater than 12 inches(305 mm) R602.10.3(2) and R602.10.3(4) to the length of cripple tall and less than 6 inches(152 mm)thick shall have wall bracing required. This adjustment shall be taken in addition to the 1.15 increase. 2018 INTERNATIONAL RESIDENTIAL CODES MASON COUNTY CARPORT/COVERED DECK DETAIL : I EXLST'WALL.ShtiYq• TIOTE; 'RAFTER,BEAM,.C&"SIZE NO-TO,kS,COK56T10N: :t>i�3TE�X:STUY?:l7�P MAX; ARE.BhSEP ON 7F�FOLWY4t 3 A55Uf4lON. 'METAL FLA5Him VERTI6AL LOAD,. la'05B ROOF.5HTG.W bd o6.O6 ROX SHTG:TO)_EMI2P NAILING S6WL. R00F:PL':r 10'PZF 60 TILE.60QF), AT ALL St"00TED PANEL EDGES bd04'OC SNOW <25.P5F ROOF ASSEMBLY AW.bd.610706 INFIEIIJ- per IRCABC requirements ROOFING MATERIAL MIN,LEDGER SIZE SNOW LOADS>25#REQUIRE ALTERNATE RAFTER T AND BEAM SIZING APPROPRIATE FOR LOADING. zo MIN (0,10'5Dist 0. BLDG) fez2XI0 MIN OR3XI2� DISTTo BLd6) bD o 7. " ,F ZXt2 MIN.OR 2YJ4 (16-W DIST TO BLDW: R 1 1 ER I�t.l:01,101 ING 's MATM WITH,RAFTER SIZE' BIRD MDl>iN hT BEARlN6 - ,� � LE06M,TO,EACH WALL 5TW[u a.IHr�k.lft IO��' �x No(5'NO.SWING SHALL BE 24'OG MTA)0.' QWO' 6UTiER(FYP)• M)-Ibd 5TAd6ER(O*IO D15T TO ELM) 13.0G' ]X ]3!b X 1o`.. ,(41•Iba STAGCaER(10-Ib'Dist T4 BL,Cl6). 2 IOd 12 r ...d1ZA :pF112..e, L - '(5)�16d'STA6GER•(16�20'.DJ3T.TO,.BLDG) 9t •2 'OG 2ZC6 2X12 �i�cl4 METAL HAFK-ER: :HJRRI6Ne GI:IP•AT lik Dtlz dP RAMV.- SIMP LXizb.(2X6:RAFTER) 51FPf l FU.9R .SIMP90N{SSUZ6,(?xB RAFTER) SaAM SIZES ' S1 L55lGZIQ(2XIOtUF.{tAFTER).OR, . �'� D19U1NGE T0�9UILGINS• B�AI1A(t24M.B&M SUDI. EGUAL; m , , tTAL POST GAP 5' 4 X 6" 4:7�6' 4X.'6' 4I b 4 •b• slMmsoN AC+F,.494•cOLIA w) $T 'f If X.6 _4'X 6 4 b' SIMF ON AGb:(46 LOI UMhU dR \:kwk '!., 4. b'• 4"X,b 4•X:IQ 4' 4X8 4 l0 X10 Y.bl.Ut•4I HFMI PRESSURE'TREATED � �..�• •4'X8' ''X to +X IT :IV KW: ,W4 tQ-10'•DI51 TO MLD6) 4X6:6,,16`PIST TO ELDG) 4X6 Q6,Z0'OST T4 B4p6) W: pafSAM.. eW4: 3' yQ3�ACGrP.T+W�• _ _ � t1ETAL.P05T 5A%(6AYANIZED) :51MPWH LC644,(4X4:COLLW '�-j 1 I5TA!!Cfi ,IM WN LGB46(4X5 COIJJMtW OR I' t3 BLDs, fDQT1Nb( om�) MUAL COLlJF1N(1YPI' + L=W —191.2 GLK A41arAE14 SUILDIN6 bow +c :T7ucfa Mum SLOPE FINISH 6RD •' AAIAY FROM SLD6 � (OWRM FOOTW Yi FL>H Z4�xz4'x24'Tl-0cx AccePr�Bl a Construction is limited to the {lypj 7r114 EA WAY tQP;Eb.T'GAYER :'Fi'•DISRANCE TO slsa., specifications of 21 Sam This diagram including maximum ITS: ::P►YI'!' SEG 10N 10'post height maximum 10'beam •N•T5 ITS: span(post spacing). MASON COUNTY COMMUNITY 1 SERVICES ICES Building,Planning,Environmental Health,Community Health 2018 International Residential Code for single-story decks. The 2018 International Residential Code Section R507 contains additional information and details specific to deck construction. New or existing � Open guards on decks more than 30 inches above grade or floor below shall Light required have members spaced so that a 4 inch diameter sphere cannot pass through. Stairway Notes: Guard Openings for required 1. Stairways shad be not less than 36"in width. guards on the sides 2. Stairway risers shall be no greater than 7 314", of stair treads shall 3. Stairway treads shall have a minimum run of 10". not allow a 4 318' 4. The length of Run and the height of Riser shall not diameter sphere to vary more than 318"in the run of the stair. pass through. 6. Stairs are required to be illuminated. 36"min. 6. Open risers are permitted if the opening is less height t than Ott. 7. Tread nosing shall be not less than 314'but not more than 1-114"on stairways with solid risers. Except when treads are I or more. 8. Composite materials may require additional stringers. Deck 34-38'above Less than nosing's 6'dia. Handrall(See Details) 1 Guard required if 10`min. more than 30' from nosing to nosing Landing same Open risers 36'Min. width of stairs Less than 4' 7 314'max.rise Finished grade Deck Footing Size Requirements Table R507.3.1 Soil bearing Capacity Live or Ground Tributary Snow Load Area 1500 psf (psf) (sq. ft.) Side of a square Diameter of a round Thickness footing footing (Inches) (Inches) inches 5 7 8 6 20 '12 14 6 60 Live or 70 40 18 20 6 Ground Snow 60 21 24 8 Load 80 25 28 9 100 28 31 11 120 30 34 12 140 33 37 13 160 35 40 15 a. lnWrpofattan perm ttsd�extrapolation rot pertrttted. bw Rese rved, o_ Fooling dimensions shalt a0nw complete beRang of the po%L d. If the support is a btkkor CMU p6er;the footing shall have a mininuin,2 iwh projection on all:sides @. Area,In square feat of deck surface supported by post andioofings. C t+A-srllnurn thickness shall onlyr apply to plaint cot=ew l'ootings, MANUFACMEO POST W NECTQR Ad Ak.=A .S61LS TYPM PT POU '0 R, r 4 ` " GRADE i ! • i I r r. f �f / DEPTH r �4 TAtBtE OGK�WS NM NOT SCR J it ilAlt Code Re uifemen# ,: Gocfe RefereftCe AEI wood must be pressure treated or of natural resistance to decay. I RC R317.1 Fasteners,hangers,nails, etc.,must be stainless steel,hot-dipped galvanized,or as IRC R317.3.1 specifically required for the specified wood preservative used. Lateral connection is reguired to resist overturning IRC R507.5.1 Ledger boards must be attached with structural wood screws to the building and all IRC R507.2 connections between the deck and dwelling must be flashed with metal flashing. Hold- IRC R5072A down tension ties shall be installed in not less than 2 locations. Joists are of appropriate size to support imposed loads. The span of a joist is measured from the centerline of bearing at one end of the joist to the centerline of bearing at the IRC R507.5 other end of the joist and does not include length of the overhangs.Use Table 1 to determine'oist span based on lumber size and joistspacing. All decks, balconies or porches,open sides of landings and stairs which are more than 30"above grade or a floor below must be protected by a guardrail not less than 36"high (42"for commercial or common areas of multi-family dwellings). Open guardrails and IRC R312 stair railings require intermediate rails or an ornamental pattern such that a ball 4"in diameter cannot nnqq throw h. Footings are of'appropriate size to support imposed loads and extend a minimum of 12" IRC 403.1.4 below grade. See Table 1 for looting sizes. Columns and posts exposed to the weather or to water splash must be supported by and connected to concrete piers or metal pedestals projecting above grade.Columns IRC R317.1.2 and posts in contact with the ground or embedded in concrete or masonry must be of IRC R317A A special pressure treated wood approved for round contact. IRC R507.7.1 positive connections r uired to secure posts to beams. Decks should not overhang beams by more than Y�the actual adjacent span, nor should IRC R507.5 beams overhang posts by more than'!.the actual beam span at the ends unless a IRC R507.6 specific design is calculated. Floor joist spacing at 24'on center requires 2x decking, IRC R507.4 and floor joist spacing at 16"on center requires 1'/.t actual thickness. Deck stairs{e)derior stairways)shall be provided with a source of illumination at the top IRC R303.8 landing, controlled from within the dwelling or by automatic means. Typical Handrail Elevation- IRC Section 311.7.8 Handrails are continuous for -the full length of the flight j���,E/ Handrails may be interrupted ,, , Wal t by a newel post at a turn, Handrails ere '� r tred on rx]oaf t less than one � side of each � Handrail ends returned continuous ruto the wall or termtneted treads ar flighc� in navel posts or safety terminals. ;Kith four car m � � f rtsefs. , f The height of the handrail is measured vertically from the sloped plane adjoining the tread nosing. TABLE R507.4 DECK POST HEIGHT Maximum Deck Post Heighta (feet-inches) (Psf) Size Loadsb post Species` Post Tributary AreaMh (sq.ft.) 20 40 60 80 100 120 140 160 Douglas Fire, 4 x 4 14-0 10-10 8-7 7-0 5-8 4-1 NP NP Hem-fire, 4 x 6 14-0 13-10 11-1 9-5 8-2 7-3 6-4 5-4 60 Live SPFe 6 x 6 14-0 14-0 14-0 14-0 14-0 13-3 10-9 6-11 Load, 8 x 8 14-0 14-0 14-0 14-0 14-0 14-0 14-0 14-0 <_ Redwoodf, 4 x 4 14-0 10-3 7-0 NP NP NP NP NP Ground Snow Western 4 x 6 14-0 13-6 10-6 8-4 5-10 NP NP NP Load Cedarsf, 6 x 6 14-0 14-0 14-0 14-0 11-11 NP NP NP Ponderosa 8 x 8 14-0 14-0 14-0 14-0 14-0 14-0 14-0 14-0 Pinef, Red Pinef For Sl:1 inch=25.4 mm,1 square foot=0.0929 m2,1 pound per square foot=0.0479 kPa,NP=Not permitted. a. Measured from the underside of the beam to top of footing or pier. b. 10 psf dead load.Snow load not assumed to be concurrent with live load. C. No.2 grade,wet service factor Included d. Notched deck posts shall be sized to accommodate beam size per In accordance with Section R507.5.2. e. Includes Incising factor. f Incising factor not included. g. Area,In square feet,of deck surface supported by post and footing. h. Interpolation permitted.Extrapolation not permitted. Deck Ledger Attachment Details & Specifications ❑Lag screws and bolts shall be staggered per diagram below. ❑Lag screw tips shall extend beyond the inside face of the band/rim joist. ❑Maximum gap between band/rim joist and ledger shall be Y2"with spacer(s) ❑Flashing shall be installed to prevent water intrusion at structural attachment. ❑Deck Ledger shall be minimum 2"x 8" pressure preservative treated, No. 2 grade lumber. (IRC Section R507.9.1.1) ❑Deck ledger shall not be supported on stone or masonry veneer. TABLE R507.9.1.3(1) II DECK LEDGER CONNECTION TO BAND JOIST Load° Joist On-Center Spacing of Fastenersb(inches) S ana 1/2-inch diameter lag 1/2-inch diameter bolt (Psf) (feet) screw with 1/2-inch with 1/2-inch maximum 1/2-inch diameter bolt with maximum sheathing°,° sheathing° 1-inch maximum sheathingf 6 22 36 35 60 Live 8 16 31 26 Load or 10 13 25 21 70 Ground Snow 12 11 20 17 Load 14 9 17 15 16 8 15 13 18 7 13 11 For SI: 1 inch=25.4 mm, 1 foot=304.8 mm, 1 pound per square foot=0.0479 kPa. a. Interpolation permitted.Extrapolation is not permitted. b. Ledgers shall be flashed in accordance with Section R703.4 to prevent water from contacting the house band joist. c. Dead load=10 psf.Snow load shall not be assumed to act concurrently with live load. d. The tip of the lag screw shall fully extend beyond the inside face of the band joist. e. Sheathing shall be wood structural panel or solid sawn lumber. f. Sheathing shall be permitted to be wood structural panel,gypsum board,fiberboard,lumber or foam sheathing.Up to 1/2-inch thickness of stacked washers shall be permitted to substitute for up to 1/2 inch of allowable sheathing thickness where combined with wood structural panel or lumber sheathing. TABLE R507.9.1.3(2) PLACEMENT OF LAG SCREWS AND BOLTS IN DECK LEDGERS AND BAND JOISTS Minimum End and Edge Distances and Spacing Between Rows Top Edget72 om Edge Ends Row Spacing Ledgers Einches' 2 inchesb 1 5/8 inchesb 2 inches inch Band Joist` %inch 2 inchesb 1 5/8 inchesb For SI::'1 inch=25.4 mm a. Lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of the deck ledger in accordance with Figure R507.9.1.3(1). b. Maximum 5 inches. c. For engineered rim joists,the manufacturer's recommendations shall govern. d. The minimum distance from bottom row of lag screws to the top edge of the ledger shall be in accordance with Figure R507.9.1.3(1). e. The 2 inches may be reduced to inch when the band joist is directly supported by a mudsill,a header or by double top wall plates. Sty FASTEM91S . ' PWVS S 5 F 2 gr "DISTAWE SK6LL 8E PE};1OTM To 0 6.r MUL KIR 1 X' to egRM)UMT04-r IF LAO S SN$ Ft2X 12 ARE USP tliT 8W Si'AslutbtG IS .0 0 REDUCED701EiA'C OF LAG SCE TQATTACtt 2 x sLmms TO 2`x 8 SAND}01M. LAG scREw oR BmT 3W M" Lim _..-...__..- —-- ---....-----..-_......---------- . ---....--- -—._..._............_._._.._.. ._._...... _...--. _.......... ---......._.. ----- FIGURE R507.9.1.3(1)PLACEMENT OF LAG SCREWS AND BOLTS IN LEDGERS EXTERIOR SHEATHING EXISTING STUD WALL EXISTING 2x BAND JOIST OR ENGINEERED RIM BOARD 2'MIN. DECK JOIST 1%-MIN. Y MAX LAG SCREWS OR BOLTS 2°MIN. FLOOR FRAMING O' o o'.'� � 4 JOIST HANGER .otjn.Q .o o p •o EXISTING o-•Q'o o• FOUNDATION WALL Deck Attachment for Lateral Loads FIGURE R507.9.2(1) and FIGURE R507.9.2(2) HOLD-DOWN OR SIMILAR TENSION DEVICE Hold down tension devices FLOOR SHEATHM NA INGAT shall be installed in not less MMAXMMON CENTER TO ICM JOIST WRH HOLD-DOWN than two locations per deck,within 24 inches of end of the deck.Each + + + + + + device shall have an + + + + allowable stress design capacity of not less than 1,500 pounds. FLOORJOISTJ DECK JOIST S IEADANG Ham SIDING MS DEEAL ISAPPLICABLE PARALLEL To DECK JOGM WAM T*HTW4$ DEICKM APPROVMj=WjMM 2'113K 2E LEp�flr�(��{�y��1EWi[��I�"wt.FAyyiTE+F`N Sr.c sa+� .. .IN+'S.eeir.VfWr+t'M"TH tl^i[it.0 CW7 $.3,(j) HOLD-D DENACE I TM LB.CAPACM Fif ?R. €S AT4LOCATIONS,EVe&YDSTpABUTT . ALOW DEMAND OM V4MM 2V OF EACH END OF THE LMGM F 1!-QOM DEVVCM SHALL ICY ENGAGE DMK JOISTPM HOLD-DOWN EAIUFACTUREP- A FULLY TiiT"tE nm w I)tAMEM LAa SCREW PREDRILLED W UK 3'PENETRATION 'TO t k3+ITFHt OF TOP PLATE,,ST1 M OIL HEADrR R507.9.2 Deck lateral load connections. Lateral loads shall be transferred to the ground or to a structure capable of transmitting them to the ground.Where the lateral load connection is provided in accordance with Figure R507.9.2(1),hold-down tension devices shall be installed in not less.than two locations per deck,within 24 inches of each end of the deck.Each device shall have an allowable stress design capacity of not less than 1500 pounds(66721).Where the lateral load connections are provided in accordance with Figure R507.9.2(2),the hold-down tension devices shall be installed in not less than four locations per deck,and each device shall have an allowable stress design capacity of not less than 750 pounds(3336 l). Exception:Decks not more than 30 inches above grade at any point may be unattached. TABLE R507.5(2) MAXIMUM DECK BEAM SPAN 60 PSF LIVE LOAD c Deck Joist Spano(feet) Beam 6 8 1 10 L 12 14 16 18 Beam Species' size Maximum Beam Span a,b,f(feet- inches) 1-2x6 3-8 3-1 2-8 2-4 2-2 2-0 1-10 1-2x8 5-0 4-1 3-6 3-1 2-10 2-7 2-5 1-2x10 6-1 5-2 4-6 4-0 3-7 3-4 3-2 1-2x12 7-1 6-1 5-5 4-10 4-5 4-1 3-10 2-2x6 5-6 4-9 4-3 3-10 3-5 3-1 2-10 2-2x8 7-5 6-5 5-9 5-0 4-6 4-1 3-9 Douglas fir-larch9, 2-2x10 9-0 7-10 7-0 6-4 5-9 5-2 4-10 Spruce-pine4iir9 2-2x12 10-6 9-1 8-1 7-5 6-10 6-4 5-10 3-2x6 6-11 6-0 5-4 4-11 4-6 4-2 3-10 3-2x8 9-3 8-0 7-2 6-6 6-1 5-6 5-0 3-2x10 11-4 9-10 8-9 8-0 7-5 6-11 6-5 3-2x12 13-2 11-5 10-2 9-4 8-7 8-1 7-7 1-2x6 6-9 3-2 2-9 2-5 2-2 2-0 1-11 1-2x8 4-10 4-2 3-7 3-2 2-11 2-8 2-6 1-2x10 5-10 5-1 4-6 4-1 3-8 3-5 3-3 1-2x12 6-10 5-11 5-3 4-10 4-5 4-2 3-11 2-2x6 5-7 4-10 4-4 3-11 3-6 3-2 2-11 Redwoodh,Western 2-2x8 7-1 6-2 5-6 5-0 4-7 4-2 3-10 Cedarsh,Ponderosa 2-2x10 8-8 7-6 6-9 6-2 5-8 5-4 4-11 Pineh,Red Pine 2-2x12 10-1 8-9 7-10 7-2 6-7 6-2 5-10 3-2x6 6-8 6-1 5-5 5-0 4-7 4-3 3-11 3-2x8 8-9 7-9 6-11 3-2x10 10-11 9-5 8-5 7-8 7-2 3-2x12 12-8 10-11 9-9 8-11 8-3 7-9 7-3 For SI.1 inch=25.4 mm.1 foot=304.8 mm,1 pound per square foot=0.0479 We 1 pound=0.454 kg. a. Interpolation permitted.Extrapolation not permitted. b. Beams supporting a single span of joists with or without cantilever. C. Dead load=10 psf,UD=360 at main span,UA=180 at cantilever.Snow load not assumed to be concurrent with live load. d. No.2 grade,wet service factor included. e. Beam depth shall be equal to or greater than the depth intersecting joist for a flush beam connection. f. Beam cantilevers are limited to the adjacent beam's span divided by4. g. Includes incising factor. h. Incising factor not included. i. Deck joist span as shown in Figure R507.5. PFM&Vff STRUCTURE- CRY FOR C ` STE t1RE JOIST$. tSDWR BLO am{tf at Tf ER f RTE.t.AE. EtE3Es"EEiEEYt ovMBOARD BOARD BEAM xiC393ERANIER E EAM SACHEND pOqt metvq POkST(3Elit]REE13 OP MEAL iT€tw CAtI Ctf.i�ST . CANT1#.Et MED JOTS iti€fft-!DROPPM BEAM JOWS 11 Mi FLUSH BEAM FORM RJi. BLOCKM ORtf'EMR LA'SM RMTRAW R£QUfflW OARSEAM JET +�" .IOtSTS BEAMS "ANGa EAMEND • JQEEETSAAN £E� TOM EE C.ANME WR CA OE:dEE i E i RB. JOtM ON D�BEAM VM DECKING MATERIAL TYPE AND MAXIMUM ON-CENTER SPACING NOMINAL SIZE Decking perpendicular to Decking diagonal to joist joist(a) 1 '/4-inch-thick wood 16 inches 12 inches 2-inch-thick wood 24 inches 16 inches Plastic composite In accordance with Section In accordance with R507.2 Section R507.2 (a) Maximum angle of 45 degrees from perpendicular for wood deck boards. TABLE R507.6 MAXIMUM DECK JOIST SPANS Allowable Joist Spane,` Maximum Cantileverf.g(feet-inches) Fist Joist (feet-inches) ieseSize Ad acent Joist Back Span9(feet) Joist Spacing(inches) J12 16 24 4 6 8 10 12 14 16 18 as fir- 2x6 7-11 7-1 5-9 1-0 1-6 NP NP NP NP NP NP Load or larche, NP 2x8 10-5 9-5 7-8 1-0 1-6 2-0 2-1 NP NP NP 70 Hem-fire, Ground SpruCe- 2x10 13-3 11-6 9-5 1-0 1-6 2-0 2-6 2-8 NP NP NP Snow pine-fire Load 2x12 15-5 13-4 10-11 1-0 1-6 2-0 2-6 3-0 3-3 NP NP Redwoodf, 2x6 7-4 6-8 5-10 1-0 1-4 NP NP NP NP NP NP Western 2x8 9-8 8-10 7-4 1-0 1-6 1-11 NP NP NP NP NP Cedars', Ponderosa 2x10 12-4 11-0 9-0 1-0 1-6 2-0 2-6 2 6 NP NP NP Pinef, Red Pinef 2x12 14-9 12-9 10-5 1-0 1-6 2-0 2-6 3-0 3-0 NP NP For SI:1 inch=25.4 mm,1 foot=304.8 mm,1 pound per square foot=0.0479 kPa,1 pound=0.454 kg,NP=Not permitted. a. Dead load=10 psf dead load.Snow load not assumed to be concurrent with live load. b. No.2 grade,wet service factor included. C. L/A=360 at main span. d. L/A=180 at cantilever with 220-pound point load applied to end. e. Includes incising factor. f. Incising factr not included. q. Interpolation permitted.Extrapolation not permitted. SAFETY GLAZING: Glazing where the bottom GLAZING NOT REGULATM exposed edge of the glazing BY SECTION R308.4,6 is less than 36 inches above the plane of the adjacent walking surface of ,- stairways, landings �r, WE Y between flights of stairs �� .'� �°,/ 6WIN'G and ramps shall be SAFEfl, considered a hazardous LAZIN location. [IRC R308.4.61 <3£INCHES n to the f c 36 INCHES Glazing adjacent landing at the bottom of a stairway where the glazing LANDING is less than 36 inches above the landing and within a 60 inch arc measured from the bottom tread shall be considered a hazardous location. [IRC R308.4.71 MASON COUNTY COMMUNITY SERVICES DEPARTMENT Community Development-Building Division Mason County Bldg.8,615 West Alder Street,Shelton,WA 98584 www.co.masonma.0 Shelton(360)427-9670 x352 Fence Handout International Building Code Chapter 1,section 105.2#2 and International Residential Code Chapter 1,section R105.2#2 exempts fences seven(7)feet and under. The construction of a fence on a shoreline property is limited due to shoreline buffers and setbacks.If your property is near or adjacent to a stream,creek,pond,wetland,saltwater or freshwater,please contact the Planning Department prior to constructing a fence regardless of height. The Planning Department can be reached at 360.427.9670 ext.352. The fence height measurement for this determination shall apply as follows; The height is measured from finished grade on the fence owner's property,to the top of the highest component of the fence. The term fence will include all components of the fence.If there is a difference of elevation between property. neighboring properties,the measurement will be that of the owner's fence on the owner's If grade is irregular the fence must follow the grade. At no point shall the fence exceed seven(7)feet above grade,if the fence exceeds seven(7)at any point it requires a Building Permit and will require setbacks*be met. EXEMPT FROM BUILDING PERMIT BUILDING PERMIT REQUIRED FENCE FENCE 7FEET GREATER MAX THAN 7 FEET YOUR PROPERTY LINE YOUR PROPERTY LINE *SUBJECT TO PROPERTY E====:>-1 L— g �— LINE SETBACKS Cq���A , MASON COUNTY COMMUNITY SERVICES DEPARTMENT Mason County Bldg.8, 615 W.Alder Street, Shelton,WA 98584 www.co.mason.wa.us (360)427-9670 X352 Belfair(360)275-4467 X352 STANDARDS FOR INSTALLTION OF PROPANE TANKS Intake to direct- vent appliance 1— \ y Window air conditioner ° 10 It(min) ' S ft •(source of ignition) _Z (Note 1) Central A/C a (min) 1 oft(min))(Note 1) compressor 10 If(min Under r (Note 2) (source of ignition) (Note i). rK a. ;o U�dar i2 5 w 10ft ;o. / Spy (min) .! , ..'o:: min) / (Note 2) /- �aw 25 ft Crawl space opening, Nearest line of adjoining (min) window,or exhaust tan property that can be /- (Note 3) loft( in) twin upon 25 It(min) / \ / For SI units,1 It=0.30 (Note 3)48 m \4 /- Note 1:Regardless of its size,any ASME container filled on Note 2:Refer to 6.3.9. site must be located so that the filling connection and foxed maximum liquid level gauge are at least 10 ft from any Note 3:This distance may be reduced to no less than 10 ft for a external source of ignition(e.g.,open flame,window A/C, single container of 1200 gal(4.5 m3)water capacity or less, compressor) intake to direct-vented gas appliance,or intake provided such container is at least 25 ft from any other LIP-Gas to a mechanical ventilation system. container of more than 125 gal(0-5 m3)water capacity.Refer Refer to 6.3.9. to 6.3.3. FIGURE L I(b) Aboveground ASME Containers. (This figure for illustrative purposes only;code shall govern.) NFPA 58 Table 6.3.1 Separation distanced between containers,important buildings and other properties. Minimum Distances Water Capacity Mounded or Underground b per Container Containers 8 Aboveground Containers Between Containers Canons - { E:. .re...-"'>4". •z�bhR,3n,1 :.'.'.t:. 9..�„ .,f, { oet tiri,'2'a4.+ <125 oe d 10 0 125—250 10 10 0 251—500 10 10 3 501—2000 10 25 3 2001—30,000 50 50 5 Footnote a: Distances for mounded or underground tanks shall be measured from the pressure relief valve and the filling connection.No part of an underground ASME container shall be less than 10-ft from a building or property line that can be built upon.(NFPA58 6.3.4) Footnote b:The horizontal distance between the portion of a building that overhangs out of the building wall and an ASME ` container of 125 gallons or more shall comply with the following: (1) The horizontal distance shall be measured from a point determined by projecting the outside edge of the overhanging structure vertically downward to grade or other level upon which the container is installed. (2) This-horizontal distance shall beat least 50%of the separation distance required in Table 6.3.1. (3) This requirement shall apply only when the overhang extends more than 5-ft.from the building. (4) This requirement shall not apply when the overhanging structure is 50-ft or more than the relief valve discharge outlet. (5) This requirement shall not apply to ASME containers,2002 to 30,000 gallons,where the container distance from a building is in accordance with NFPA 58 6.24.2. Footnote c: Access at the ends or sides of individual underground containers 125 gallons or more shall be provided in multi- container installations to facilitate working with cranes or hoists.(NFPA 58 6.3.11) Footnote d: The distance measured horizontally from the point of discharge of a container pressure relief valve to any building opening below the level of such discharge shall be in accordance with Table 6.3.9.and figure I.1(b). (NFPA 58 6.3.9) Footnote e: Cylinders installed alongside of buildings shall be positioned so that the discharge from the cylinder pressure relief device is located as follows:(1)At least 3-ft horizontally away from any building opening that is below the level of such discharge.(2)At least 5-ft in any direction away from any exterior source of ignition,opening to direct-vent(sealed combustion system).appliances,or mechanical ventilation air intakes. Cylinders shall not be located and installed underneath a building unless the,space is open to the atmosphere for 50%of its perimeter or more. The distance measured horizontally harge of a container pressure relief valve to any building opening below the level of such discharge shall from any point of disc be in accordance with Table 6.3.9 and Figure I.1(b). (NFPA 58 6.3.7,6.3.8,and 6.3.9) ADDITIONAL REOUIREMENTS: 1. A building permit shall be required for the installation of any sized tank serving a fixed appliance within any structure. 2. All LP tanks shall be installed in accordance to NFPA 58 and the International Fire Code. 3. Weeds,grass,brush,trash and other combustible material shall be kept not less than 10-feet from LP tanks in any direction. 4. When exposed to probable vehicular damage due to proximity to driveways,parking areas,or alleys,LP containers,regulators and piping shall be protected. (, f�[_ a���-'�"�`_ �ontGt�uier•(soutc�_ coffw 9 4mde7s tlot'1�(ed on eGe :,r•• .. _..- .. .. _. trYQK GravA,spaceoPe+lmg µ§ndowsi a�'$xheti�t�ah FbtSl'tHilts„1 ft:�ffs0+t$' hlotBt�f(irunimtimfiom_ielie imweMgay.I eliG.iieWB�; Mali sE!6h6�(rmii&!iv"�ledeti.sftetiann'abuRc�fiick fiom any e#erorsourC +?flgr�Itios�,apeningBYntv.cGrack_ -fOQng 'edtde-aadventvaNemesCbeallaasS�Oi_fiem, real P + °f na�tr2nicy�ItrentilaCroneft-ritakes g Ct duc acF�gntUonF6Peq`naw 4 G: Refer F83i �feiio$�s.9 medfaNceUYQlttlayon eiriNk�lwe, Tlg�s;�ererex�aa.; RIGI?4�I.1(il.;G�!hers,.�;rd?'s?l+ttlrat�R.k+.'�t'qsea.n?�Zb cQ{ies7ialG�amd?+�: EGRESS WINDOW All sleeping rooms and basements with habitable space shall have at least one openable emergency escape or rescue opening. Emergency escape and rescue windows shall be operational from the inside of the room without use of keys or tools. Minimum openable area: 5.7 square feet' Minimum width net clearance: 20" Minimum height net clearance: 24" Maximum 44" off finished floor. 'A net clear opening of.5 square feet is allowed when window is located such that the sill height of the opening is not more-than 44" above or below the . finished ground level adjacent to the opening. Below are recommendations received from manufacturers. Be sure to check with your window manufacturer- to make sure windows in rooms-.that require emergency escape or rescue openings will comply to'current code requirements. �tr i.., :.'.. '—. —�.,-•'S3>-ai5=-:=,mac _- — -7:z on -�:._c -. - .:=T?".�q ,�'=h�T ==':::i�:[=�.•,.. _.. - - _ .`=.gin.,r.'.' _ _- „'•�J-> __ �."_=._r� :-.?.r.`_°"f�.. yr.. .�,1VIs11 -"{�_ c_4. •' i�-' •Si' }_ -i!Y u-z�s]:3iTi"4 1 'f'F.. �—la.� ..:-3_9- ie•-ni iF'W{- -y - I•s..� _.. ._ .. :-: .. .Fr ... - - - �'•?- a .:'4.;...,� L.�1�:'{ 48"x 42' 48"x 48" 48"x 48' 48"x 44" Horizontal Slider or or or or 60"x 36" 60"x 36" 60"x 36" 60"x 36" 36"x 60" 36"x 60" 36"x 60" 36"x 60" or or or or Single Hung 30"x 72" 30"x 72" 30"x 72' 30"x 72" Vent bar placed to provide required egress dimensions 30"x 48" 28"x 48" 30"x 42" 30"x 48" or or or or Casement 36"x 42" 36"x 36" 36"x 48" 36"x 42" Egress hinges may be required 20 IN. �CL1=flR" 1 f � / �CLEaAR 41 IN. CLEAR O'PENABLE AREA=5.7 SO FT. �� 24 @N \\/� OPENABLE CLEAR /\ AREA=5.7 SQ,FT. See footnote' �� \ I above. �� /�/ \\\ See footnote'above. I I E MINIMUM SIZE MINIMUM SIZE WINDOW FOR 20 IN. WINDOW FOR 24 III. CLEAR WIDTH 44 IN. CLEAR HEIGHT FLOOR t �T =y MASON COUNTY COMMUNITY SERVICES DEPARTMENT Mason County Bldg.8, 615 W.Alder Street, Shelton,WA 98584 www.co.mason.wa.us (360)427-9670 X352 Belfair(360)275-4467 X352 STANDARDS FOR INSTALLTION OF PROPANE TANKS Intake to direct- �. y vent appl-lance A/ _—_� — Window air conditioner 10 ft(min) (source of ignition) (Note 1) 5 ft Central A/C (min) 0 10 ft(min)(Note 1) U� (Note 2) - compressor loft min qer� 25 • - (source of�ignition) (Note 1) 72 of ��.`�'.. 5 ft ur+ C. /. a/k Oo 10ft min) �/ (min) P,.•-.: (Note 2) /. ?�0 Crawl space opening, Nearest line of adjoining /- 8a/k prerty that can window,or exhaust fan op upon be (Note 3) 10 ft(min_ ) 25 ft(min) / (Note 3) /" For SI units,l ft=0.3048 m Note 1:Regardless of its size,any ASME container filled on Note 2:Refer to 6.3.9. she must be located so that the tilling connection and fixed maximum liquid level gauge are at least 10 ft from any Note 3:This distance may be reduced to no less than 10 ft for a external source of ignition(e.g.,open flame,window A/C, single container of 1200 gal(4.5 m3)water capacity or less, compressor),intake to direct-vented gas appliance,or Intake provided such container Is at least 25 ft from any other LP-Gas to a mechanical ventilation system. container of more than 125 gal(0.5 m3)water capacity.Refer Refer to 6.3.9. to 6.3.3. FIGURE 1.1(b) Aboveground ASME Containers. (This figure,for illustrative purposes only;code shaU govern.) NFPA 58 Table 6.3.1 Separation distanced between containers,important buildings and other properties. Minimum Distances Water Capacity Mounded or Underground Aboveground Containers b Between per Container Containers a Containers° ee <125 d 10 0° 0 125—250 10 10 0 251—500 10 10 3 501—2000 10 25 3 2001—30,000 1 50 50 5 Footnote a: Distances for mounded or underground tanks shall be measured from the pressure relief valve and the filling connection.No part of an underground ASME container shall be less than 10-ft from a building or property line that can be built upon. (NFPA58 6.3.4) Footnote b:The horizontal distance between the portion of a building that overhangs out of the building wall and an ASME container of 125 gallons or more shall comply with the following: (1) The horizontal distance shall be measured from a point determined by projecting the outside edge of the overhanging structure vertically downward to grade or other level upon which the container is installed. (2) This horizontal distance shall be at least 50%of the separation distance required in Table 6.3.1. (3) This requirement shall apply only when the overhang extends more than 5-ft.from the building. (4) This requirement shall not apply when the overhanging structure is 50-ft or more than the relief valve discharge outlet. (5) This requirement shall not apply to ASME containers,2002 to 30,000 gallons,where the container distance from a building is in accordance with NFPA 58 6.24.2. Footnote c: Access at the ends or sides of individual underground containers 125 gallons or more shall be provided in multi- container installations to facilitate working with cranes or hoists.(NFPA 58 6.3.11) Footnote d: The distance measured horizontally from the point of discharge of a container pressure relief valve to any building opening below the level of such discharge shall be in accordance with Table 6.3.9.and figure I.1(b). (NFPA 58 6.3.9) Footnote e: Cylinders installed alongside of-buildings shall•.be positioned so..that the discharge from the cylinder pressure relief device is located as follows:(1)At least 3-ft horizontally away fiom.any building opening that is below the level of such discharge.(2)At least 5-ft in any direction away from any exterior source ofignition,opening to direct-vent(sealed combustion system)appliances,or mechanical ventilation-air intakes. Cylinders shall not be located and installed underneath a building unless the space is open to the atmosphere'for 50%of its perimeter or more. The distance measured horizontally from any point of discharge of a container pressure relief valve to any building-opening below the level of such discharge shall be in accordance with Table 6.3.9 and Figure I.T(b). (NFPA 58 6.3.7,6.3.8,and 6.3.9) ADDITIONAL REOUIREMENTS: 1. A building permit shall be required for the installation of any sized tank serving a fixed appliance within any structure. 2. All LP tanks shall be installed in accordance to NFPA 58 and the International Fire Code. 3. Weeds,grass,brush,trash and other combustible material shall be kept not less than 10-feet from LP tanks in any direction. 4. When exposed to probable vehicular damage due to proximity to driveways,parking areas,or alleys,LP containers,regulators and piping shall be protected. �Fl�i1-1if(edan.slfe *;:• .q(e3� '- _._ -G�GAd�rgtf'8irsfr�b�ilktJ�K �a�'r;�•,��ri,��miwa•�; .atr fiomnnYexier}ars�wr�pFig�tjut4•aAenin�sS?�Do;�►ed"- #AUr��vnneormn�ana�ent�eaumibe�. ai-'►�t�o.�#r+sr�, � � =aPPr� sr��l1�I@iionalrlhtake4 NotR ON$ SITES MANAGING_�TpR�13)RArIN'AG*9 "' MAILL . , The,"SmAWftied.9tbrm*sW-Site PJAim" A.Y Small ViLrcdF1 is aAevalopmeni-1hat disiurbs less"than ZRACre,anai;ogid ws awre ibau 2,000.square feet of -now al le J -S -�gw--.1 . I,Sf `Site PIwr-`re4 ir. d? a building application is mad.6-for residentiai I A."f8iftall FareAStorm-water-0e.Plan"is requirdd whenever ;�..-pa Vaiggrpaye qT: 21WIikis this.required? The goals of the: plamareioprqp�pf water.quility-reduce-waterpm -ofL-,.mid tq.oFeVefii erosion, .3.).'Whaiis required*'."' ingihr!�epatts',-hoUK�,§'Pad4Dfy.QUrt�u�t&ng th fofkyw wFpAvaor vi2M.C.QMp pd... f A Smodf-Pgrool JD d A. -or man M (Exai4ple A) ESC).,?lW!-f6r use duriitg-oqnst�.uc&M(E�Cdmpfie-B) A small parcel"Erosion&SedimentEbatrol. MW*r rwoff*M Wqpi�.116d.a fter W V'h -4qt VVW ild thoed to6orto-09brol orog ioji d ikeinig 0WOU"Ctibul. W.Q, �6� inmo:�t-casesizrosiowiicont'rolled-'bycWaring,ofily-,�(hat-:isnecessar,y, t W....g.d.u..nng..the dry, d p�eventperosi ,400 tng.. p doo.iftgot'a 041l00ftn POY s _r sj un (H n UtE H shpvo h6W you-Jiprenl to 0PI; 'It AP�erosion, our p6tinit review, Cowk vv.i.11 re an.and" vie- uwn The pur-pi -th ften ip andoufA)as par and tfi-asyowsl.iow oilthd'"ErbsJoit. Sediment Cobtrol.Mae erasion You.w-111:be raspohsibld:fbr d6ntrowltint TO On as sthe-site_*and'exposing spit soon -you . Proof tharyourplan is Working fs.that theTe:Should be no mudidy(-watet run-niha-df your Sit-6:1wileratrains: .5)What:d6t.need4Gdo_. --.coitt-rolrun off-after eenstructidu9.: ff fi-O In roost from roofs ft and.any p r aIqd 0 paved gtav .4rea:S' xeducewateFrum-9 -a dir�*,d to.V�,&Wed Aj§p'd 4r6g(Handodts-Q,�. V surface rub- .fr .6�n YGO.proppity.. T M es b i . -runo ,-or infiltration:features: '- the recommended suff-acer ff ;&J) H For.-unusual eases'- For appr9vaj by:ihe.. ilding. PAS,#p,'I tbdd defcd.' Dipartment in consultation-with Public Works Engineering t Plan!-(Exam Ic.C)sh6*�how-y'ou iUt=.'dJO,wntr01.,wAt0 run-off when.. Thd`-Residential Sitoniprovomen P . ft W04euji�(Example-0 ps--pa r!,.-.qfkour "isbuilt.The�Q� willyourP:1*antiyour.project t3z fesliansible far the-aajjtrof iheasdre-s be&r'e- y04:60 m get. at occupancy-approvat on your pert pp&4Ue rtgulationsfor defall�- r4afe. Tj*atjacjwd_&j e,�:and liandbuts m-&fbr..Ulusi�wNe pwposes,-See a 9 iM E"A" 91v ALL.PARCM ST AIR IWATEE:.SJUE`PLAN `VVRI')<"I EN.I?��SCRIPTIOIaJ' Darlene 1���i��€. -Tbe :l�tasen C�uiify'i'�C.Parcel,N.q. 1�3�1;50(�3Q1U. .. .;sifeis ocatteci:ea�4Shelton wa 1-69,acte lciz;�°The:.lti :is 0c 0r With�.opand.audwetland at the bane of steep(g a#e�r than °�o� iopa Co.finis_east side of thy:pXoperty:;The bite slope$z��r#kierly #i�wars l .rvO..The slope on the:west:side:of am property is mocker*G1 4,W_oj,:tLppwj(imat4y.two- L.. of the:site.(thc vtitherly pprtion),v�ill b c1 d:;Tiees and other native vegetatiQct wt�l,be left lufa along the northern edgex,.near the;road:Neifherthe wellaudlb :nor-t�SIOPes.(exeept fort ie: dri o lay ct iistiucticin ;Will be disLiirl ed::The driveway, Rlt€averse tie rnare:moderate slope with tie= topo d lioitse app xi mately 1`fl0 fee#.from tfi tnp.o t7ie icipo:.Tlie iln va :ill lie approxiina'td. 10 .feetby lS0 feet`(1,goo squazB feet�`af iin�eaviotis surfaces,the gaildii area 1',300 squai feet;and tlie: lion 3;T Q.stlnare; eet;,The tn#nL piopo$ecl inip rtiio :st face is �BSQ..silvaie_feet�=v�i fall,"h n #he.limits.fts iialt.Parcel Drainage.Review. -A U SOMEWater`flows will:be diq)efsed through yege .Ta=avoid,saturatiT�tg:sp-is near the.'fotmdati(in. of the house,roof unW.vh1l' �3i ted tovsrdi vagetatqd flOW paihs:y a da spou iexteristons,.,r�i: orisite septicAystem i9propos4 All Small parcel dra ge be:located.downhill of the. sep#c:tank aril c�rainfte .Tfx upper po*6n pf the dmreway. rel_at%vei�flab Th:erefdre;.runoff&a�n _. this area can.simpty�be: hawed t�sheet flow to the.west side towards the rads iiag:swalc and away fm steeper slopes,.'T1u;:lowesportion of tlie:dirivevvay is.fairly steep,Rt offwilt be.collected using-small: berrns.thdt,will dired.xM. -OffftD dispersion trenches With a 25-Foot vegetated.now path:This we`ll prevent i€bhcenbatioitof the rdnoff'dnW'the slsi es.ancl:w t.pi�s�renttivater fiam.ri u .out of the:drivewi y and fife ttxe`Wad IiiGcardeX .cat e+riisiori and traF`setlltrie i#s w%tlxiti tFie'pmject'sa th6rfciuov�iixig Best M....ageislerit P=dcesr(Bh(S).wilier ased:apptoxhuAtely"as shown-4h theXrosiomattt :Sediment eonW(E Pier a Gearing luii fs IvIlf,tie-_xxiarkeci by Fe i.m -or-oflier'mean-s'bbQnslc0-the ground,_ d ivevst�y wiIT 1 ::cs u trcteiesi attd.gra�rei6 immectiately::Dispersidn[renche�shall.be placed a�drdixig#P flq v coat zsl'regt�rosneots.Areas accelrtiing:shept OOW ftm tU�driveway and parking area(that are nctt Wing-left in,40ve vegettationj vnIL.be:sseedod a nd:mulched: 4*: Water wiff_naz:beAawed point-to _ `. dischaff:_ .. a ozuao slopes;A; Iine"itp will.inre=pt and-d'u_ect wad from the steeper poW of the dnyev�ray down to the dispersal:t e at thc bo(jbm-ofthe .slope. iI#.feucutg:Vngl.be pl aced at the-IOTMw edge of the clearing in the vieiaify of both the wetland and the .slopes_ . * A"Wked construction eRtiPe:WiIl be Placed at the:end of tbe-driveway. • .Miulcb wi.Il be spread over all cicared areas of the site when they are not:being worked.'.MW--h rAAI conf(ist, of air-dried sftaw and chippe& rte vegetation. IS �? EXAM.- OS TON 76, i n .5-74 j x Tic Le Aw SEA 9 ItP x' i • C.Cea � _ 9t9IMMAI=.:Srn� PLAN f •'. �Tt��A1uC �t�Ro�.��>. .O' -l76 TO. - Nor: '' _ -� � . .:.: . � • (� tt�evt�,. �� [ � 1Z3t -5v lo. 1 � _.I`?t _ . I�t7V► �: . . iuecy tk It 110 PC MA ^• i ul l4�w T � . mow: fey M 1�OUT' -D 5-rAB-A I CON T-UCUUM ENTRA-14C9 �1t�.erif_r�at�ce�hall b�rr�a�r�tarr�eti°ii3;�.ca�i�t[�#on.w�ii�i?wii�p�e�i�rit_ ��ackr�g�t Jow v mud c� t 'ubli�c-� t -©f waar•T.his ay require �eriad��tt�pt+dresser'.i�:�v�h�dd�ior,�t'�tean-grar�rel�y'mef���a?: 1F iatrial spitted; dropped„ rscl; ec ' r`tract . fti n Whicles Qnio roaaiv*or rjfq s�rrn drat t vrdltchm`-mus#..be removedifmmedia�Ty�: -dace° 0 . 1 f. ir?irnurr:Ra*J&# ., . 6°lwltltJ ne� � f#p(g§slEgress eta. C#ean.GGravolor. Ovshed Pock siicl cas 1 ;Arius ovshtd 6 a°ufir' OY,J T . l�irrpase Use ofast<lH f*ense mducas the ftas oit;ufieoarse;seiliznent fcom� opruigtn sty_: y`rding a tippot j►ptcx� ra ys 1C icyo;sPntgt reduig.tttecuoffXefiti ;s: f QirEcriiiilvP� ��eegcc4. 0c�r: deiails:en silt:fence.cot�tfaic�'hn. r: ftdtoir of.L i fence.may#fie-vsdow $Ippe`osist�ri areas. Silf_€ti sn �._iii#eitdipa.q:fre `+coR VWeeii �rl flpw�;i�t7r:i�of iinttnded to C sub3tuaI adivunts;a:f oyticld ftaysr...pity hi�cctEod:Ylflvsis` must•be-corm eyerl-lhtough•#11p,dralaag6.systemfa-a•sedimedpond:. T�tie:tit�lycumstaiice�in.vt�fi��troYei;iat#d:flio�rcan.lieti•:�tc��uleYy�i3� a %I1 ftcc j a0 er thari by A 5eiibmt bdti fs*ben tht atea i la- to the:fenee is-one acre or 1=,and:Qowrafes:m iess'.Ihan 0 5 efs- •:. :SIK fences sFZoatd.nut be cons4pcted:in sfreamsw-used..in-V-shaptd- ditcho:-Ahey.rt cFot'azi'aidequate:ntgw- Q--4400ntrpt for#n ing dee�ei•ifisirsH�et~oi'o�eida�fioyst . Jolob in 1i 16rfabdd-khanbdsp7Cted at posts Use sfapfies;wfe rings of 2 It ba.rrira,br. equival�rik_fg lira. latiiic`la pests egqtu�i a tt`i1 dYagdasd - . �1CHngtti�a�iit ivad ' - Hl MI : : : t Filter tabiic :.. E: � t t L! BadtM kpnzt wit b;na{hra#oil RdsF.ssppaaaTngYaay6claeteasdd t:i314'-i 5 vrashed'GF�:e1 g�Iv�r9 tzae}dp9is used . �"x2'l�iood'pci'sis;sigeflei�cq pbsls�flr equnr�iettt 9w'W'e'4:Z4-=`tiff;-:net 1) gtr::aticl D iriagi;:a ea Rf 1. o Or iok-,ir- .;cotrt liA.-4 iiii ii Basin .f�raltadou: id farger site: :s�u��iaa • ufara�n° lggier� ( psmglerpe, cular�icy ferice. rri� 1A:_ ?ti iurd :Oi�Oettind leno to tfft:fe .0 i_ FgMCE.WSTAL ,ATION AND I WNTENANCE Malntery�t�ce ixicing m .bc c�spccfad regvlady 1or.dazaagc Sit[fencing tiocs break Ownundcc iN light`Scaimct;t col caied behind the frnce must be ramovcdsa that this.criattrial does not:pOX the fcnce.oxer:. StLTFENCE:1NSTAT.ATiON MD ib R4TENANCE. �i•. fi i�+ 4.. ag.-trench i CQe�n ab c, 5take< F `y v '1{:� Y r• ... ,} Vi�a.. Reln€acre Mon[tc�r Matnfaio and cfean douse r44f: _ ' :ttq�ijspou4 - �'L'fYB�4Fi• ts1.•rj _ . . S.UY;riiis•; :ilget�lei�now pa* 'bit�lc Aownspwt extension Nat= to 5cate st fasts. block HANDOUT TM- T�ISP�RSION:'T�tEI�tG�b�TAIL:�: :a level ouf.et 4�•a'. .d . .baa6 a.. Yff . :4'Odif pipe; ay.pa0 .sod°Aa04 F:Y.4bde4 as �.p.o-�p• a.`' a•..a p.. ap.�.Q.. �a�P.a •pa�o ' a'a a•l' • '�lG'�O C.p. . -�4 TFtEKC-H Xt$tCTION stops:. str M_catch bbAl or..yaid drain '� Scxtp(e 90-fbof trericlt�: TYPE # CATCt t H�#STi3 >700'sq,.ft `2 gptegeafedw; • y��iA�A�ht�J�+l^.NJ�NIa�Y�s 7+Aax'mum 50-fora trench wIndtch.: board PLAN MEW 0 ROOF [fat; to Scale BOUT ,T� TYINCAL.'DRWEW AVDISPERSIO-N'FF.TU1zES Locale dialm. f 0 ADO 29 fmm ROW J .--� O c 70U sq.fL max.betweenberms drivewaystop4sl_. toward stfeel. E' BERM DETAtL. <...• 25`_Vbdo a ed Diagonal betm .. st�ai�iE with dipetsion: 2� 4m trend. 13LAN . Driveway Dispersion Treircl Dl veway Stage V.ar asand slopesTomrd Street a �0 <cc d o s 0 1 TA 1' L},t SlieetFidW Dispersion from a Ddvev+ray Flat to Moderately:Sloping Driveways .>L lANDO T J" S' EE b iv wAYDIPE SION FEArs.J - ii 1 focate:drair� � Q 7s tmm Raw it t,j 700 S*%,f.max.bet.we n'bift's diW6e y stcsp.34 -• r— �tawacad:slraet .i . t7iag�oaatt>er►n. BERM DETAIL: '' g �.'.;. with.dipersiun O p trench segm'ZS'�+egetateda� j ¢uyvgaitY nt N � 1 • Pt:�4t�: Steep Utiveway.with Dlagofla!'B.er 3 lacate.ifraitl �p -� 2F frgin ROW-If'. cirixevs�arslypes.�t9_ Q toward.sireet� � TOD sq:.lt.ariaz.bchvecr►drains .t-. a 0 riA 25 vegetated , dp� R.pwpath Begin PLAN: Steap:Dfiveway 3Walt ti a Dt d as HANDQU AMITFA`1'ON VSTEM Si :ate: ERch.aiyWel1 ark Feed Of tao t .1 Gc�tfer 48_Inch Diameter -Ca1-tause tr.h'aasin Hole.Titled"with (Yard Drain; 1-112"10 �Waghed. F1bV:' Draln j:xk.. ;PVC'Pipe Sides bf Hale tailed wife OPY WELL PLAN V!�EW Fi(terFatiric (Not TO: $09145). Ilerlt Cerferf j-fc/e 'tq i!'-Papped PVC: Nr a Or Other Means ;i-7w wiili:surface- Topsoil I'Min. Fire til ih C. i i:;8as 40 inch Diameter Noie.Fitted wh 1-1, 'td 3':W-ia4fte_d Rock Min. V above Seasonal DRY WELL X SECTION VIEW l-tlgh G unftafer Table (Nv tT&Sale) Typical Dfywell Infiltration System..: . _ ` RAND-OUT J 1 ttt`i7 ALTERVATE WILT"MON EUBM WITS GrassliT g atirrrt F16W C3ii�rfl�ii�v Oftrievka --�. 6.0 Mira: Pbr'ghip. 3fi".11ifit�. (Not T cafe). 'SW6,6&MOM blW61tti Un (kith Rltar Rabtr' Huse �cass;(�eget�llon Floi�ir� �. ;O*ftre 3 `7litirt, 1 "11iT1ii mac -- ROO i, 7 FiLf ;i�P TF?ENIJ H X-SE .770N-. R;S EW { 1t70 'd � :ire;. 1:Q•'��en �=b���`�-�r�i�]�:t��� � �, ',p- ci1aee'.t tf `oi `r 'rrvei I: .�. ...1,-� � .;V.���a.L ..� ! ...+.N�'a'.�..�i:.. .�Af �G...+.y, .w1........ .�-T-�-+--�-==•F'J.•��JI�:�.+`i.�' ... mow.. 'F MASON COUNTY COMMUNITY SERVICES Building,Planning,Environmental Health,Community Health Are you ready to call for final inspection? This is a list of items that the building inspectors will typically inspect during a final inspection. Each structure is unique and may contain components that are not included in the list. Temporary occupancy is available by request when all life safety requirements have been met and approved. Temporary occupancy is valid for not more than 180 days(6 months). Numbers references are found on the Plan Review Checklist: attached to approved construction plans or found on our website at: http://www.co.mason.wa.us/forms/Community_Dev/plan_review checklist.pdf 1. Post address in a permanent manner, plainly visible and legible from the street or road fronting the property. Number must contrast with their background. For more information see Fire Apparatus Access Roads HandoutN 2. All exit doors shall have proper landings including guardrails and handrails,as needed. Pay attention to stair rise/run and picket spacing. (The largest riser and/or tread may not exceed the smallest by more than 3/8") See deck detail handout and item #31,32,33,34,35,36,37,38 3. Smoke&Carbon Monoxide detectors must be installed as required and operational. See Handout item #3. 4. The HVAC system will be inspected for code compliance including combustion air if a gas appliance is installed, duct installation, cold air return, etc. #15, #20. 5. Garage firewall penetrations, 20-minute rating etc. See items 23&24 on the plan review checklist. 6. Handrails and guardrails,where required must be installed inside and outside. See deck detail handout and items #32 & #33. 7. Exhaust fans, including kitchen, must be vented to the outside with dampers. Dryer ducts must also be vented to the outside. See items#6,7,8 and 99-106 on the plan review checklist. 8. In bathrooms,toilets,tubs, and showers must be in working order and be caulked to the wall and floor covering. 9. Caulk and seal all penetrations where conditioned and unconditioned spaces communicate including electrical and plumbing penetrations/openings to wallboard/wall covering (exterior walls,floors, and ceilings). 10. P-Traps must be installed at all plumbing locations. 11. Corrections, if any,will be checked. Sometimes there are corrections from previous inspections remaining in the crawispace or attic. 12. Divert drainage away from the building (gutters, downspouts, splash blocks,etc.). Backfill must be sloped away from the structure(at least 2%), measured 10-feet from the structure. #47 J. All stormwater controls must be installed. 13. Listed non-removable back flow preventer, hose type vacuum breaker must be installed on all exterior frost-free hosebibs. #21 14. Insulation in attic and crawispace,weather-strip and insulate attic access and crawispace, if located inside the structure. #88,89,90,91,92 1 15. Compliance to Ventilation and Indoor Air Quality Code—fresh air, whole house fan, etc.#'s 99,100,101,102,103,104,105 &106. 16. Exterior building must be sealed where penetrations occur(windows, vents, hose bibs, conduits, seams,etc.) 17. Installation of fireplace or stove, if applicable. #'s 11,12,13,14,15,20, &77 18. All wood exposed to weather,or is in contact with concrete or soil, shall be pressure treated or naturally resistant to decay. READ plan review checklist#56E. 19. Water heater must be strapped in upper 1/3 and the lower 1/3 with a 22 gage strap x 3/a", watertight pan of non - —corrosive material must be installed under water heaters,Temperature&Pressure relief valves must be installed, pipe and water lines insulated in unheated spaces. See item #18 on the Plan Review Checklist. 20. Check crawlspaces. Insulation installed, 6 mil black vapor barrier overlapped 12 inches, all plumbing supply lines insulated, HVAC ducts properly supported; all corrections from previous inspections completed. 21. And finally.... Read the conditions of your permit and check to make sure all conditions have been meet including any geo-technical requirements are completed. This list is intended for use to prepare for an inspection. This is only a general list and is not intended to address all possible conditions. 2 I OVASHINGTON STATE UNIVERSITY Insulation Certificate for Residential New Construction v Energy Program Permit#: House address or lot number: Walls Blown or Sprayed Fiberglass or Cellulose-Walls Type of insulation: R-value per inch: Manufacturer: Coverage area: FG Density: 1.81-bs./Ft3 Cellulose:3.5-4.3Lbs./Ft3 Installed Density Per Ft.3 R-value: Bag count: Floor Blown or Sprayed Fiberglass or Cellulose-Ceiling Type of insulation: Settled R-value per inch: Manufacturer: Coverage area: R-value: Bag count: Flat Ceiling/Attic Sprayed Polyurethane Foam(SPF) Type of insulation: Density: ❑ 0.5Lbs./Ft3 ❑ 2.OLbs./Ft3 Manufacturer: Installed thickness: R-value: R-value of installed thickness: Building component installed: Single Rafter Joist Vaulted Ceiling Type of insulation: Walls: Manufacturer: Ceiling: R-value: Floor: Insulation Installer Company name: Installer name Print: Installer signature: Date: Phone number: Email: V-I 6-23 I ........ A STATE UNIVERSITY Insulation Certificate for Residential New Construction V Energy Program 4 � SECTION R303 MATERIALS, SYSTEMS AND EQUIPMENT R303.1 Identification. Materials, systems and equipment shall be identified in a manner that will allow a determination of compliance with the applicable provisions of this code_ R303.1.1 Building thermal envelope insulation.An R-value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation 12 inches (305 mm)or greater in width_Alternately, the insulation installers shall provide a certification listing the type, manufacturer and R-value of insulation installed in each element of the building thermal envelope. For blown or sprayed insulation(fiberglass and cellulose),the initial installed thickness; settled thickness, settled R-value, installed density, coverage area and number of bags installed shall be listed on the certification. For sprayed polyurethane foam(SPF)insulation, the installed thickness of the areas covered and R-value of installed thickness shall be listed on the certification_For insulated siding, the R-value shall be labeled on the product's package and shall be listed on the certification. The insulation installer shall sign, date and post the certification in a conspicuous location on the job site_ Exception'. For roof insulation installed above the deck,the R-value shall be labeled as required by the material standards specified in Table 1508.2 of the International Building Code or Table R006.2 of the lntemational Residential Code. R303.1.1.1 Blown or sprayed roof/ceiling insulation. The thickness of blown-in or sprayed rooflceiling insulation(fiberglass or cellulose)shall be written in inches(mm)on markers that are installed at least one for every 300 square feet(28 m2)throughout the attic space. The markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers a minimum of 1 inch (25 mm)in height_ Each marker shall face the attic access opening_Spray polyurethane foam thickness and installed R- value shall be listed on certification provided by the insulation installer_ R303.1.2 Insulation mark installation. Insulating materials shall be installed such that the manufacturer's R value mark is readily observable upon inspection_ For insulation materials that are installed without an observable manufacturer"s R-value mark, such as blown or draped products, an insulation certificate complying with Section R303.1.1 shall be left immediately after installation by the installer, in a conspicuous location within the building, to certify the installed R-value of the insulation material. R303.1.3 Fenestration product rating. U-factors of fenestration products(windows, doors and skylights)shall be determined in accordance with NFRC 100. Exception_Where required, garage door 1-1-factors shall be determined in accordance with either NFRC 100 or ANSIIDASMA 105_ U-factors shall be determined by an accredited, independent laboratory, and labeled and certified by the manufacturer_ Products lacking such a labeled U-factor shall be assigned a default U-factor from Table R303.1.3(1), R303.1.3(2)or R303.1.3(4)_The solar heat gain coefficient(SHGC)and visible transmittance (VT)of glazed fenestration products(windows, glazed doors and skylights)shall be determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and V-I 6-23 WSEC-R Duct Leakage Affidavit Permit# Address or Lot &&Block WASHINGTON STATE UNIVERSITY v Energy Program � city Zi. Cond. Floor Area (ft): Source(check one): Plans ❑ Measured ❑ Air Handler in conditioned space? ❑yes ❑no Air Handler present during test? ❑yes ❑no Circle Test Method: Leakage to Outside Total Leakage (AHJ approval is needed for total leakage to outside test in lieu of the total leakage test per RS-33 standard) Maximum duct leakage: Post Construction,total duct leakage:(floor area x.04)= CFM@25 Pa Post Construction,leakage to outdoors: (floor area x .04)= CFM@25 Pa Rough-In,total duct leakage with air handler installed: (floor area x .04)= CFM@25 Pa Rough-In,total duct leakage with air handler not installed: (floor area x.03)= CFM@25 Pa Post construction test with Ducts inside: (floor area x 0.08) = CFM@25 Pa Result of test conducted at @ 25 Pa in CFM: Duct testing device opening setting (circle one if applicable): Open 1/A 2/13 3/C 4/D 5/E Duct Tester Location: Pressure Tap Location: 1 certify that these duct leaks a rates are accurate and determined using standard duct testing protocol. Testing Company: Address city zip: Phone#: Email: Technician Print: Technician Si afore: Date of test: Technicians ID# Copy provided to both Yes ❑ Time and Location Yes ❑ the AHJ and the owner No ❑ stamp of test No ❑ rovided WSEC-R Code for common Duct testing questions.Not all inclusive... R403.3.5 Duct testing.Ducts shall be leak tested in accordance with WSU RS-33,using the maximum duct leakage rates specified. Exception:A duct air leakage test shall not be required for ducts serving ventilation systems that are not integrated with ducts serving heating or cooling systems.A written report of the results shall be signed by the party conducting the test and provided to the code official. R403.3.6 Duct leakage.The total leakage of the ducts,where measured in accordance with Section R403.3.3,shall be as follows: 1. Rough-in test:Total leakage shall be less than or equal to 4.0 cfrn(113.3 Umin)per 100 square feet(9.29 m2)of conditioned floor area when tested at a pressure differential of 0.1 inches w.g.(25 Pa)across the system,including the manufacturer's air handler enclosure.All registers shall be taped or otherwise sealed during the test.If the air handler is not installed at the time of the test,total leakage shall be less than or equal to 3.0 cfm(85 L/min)per 100 square feet(9.29 m2)of conditioned floor area.2021 Washington State Energy Code RE-33 * 2. Post construction test:Leakage to outdoors shall be less than or equal to4 cfm(113.3 L/min)per 100 square feet(9.29 m2 of conditioned floor area or total leakage shall be less than or equal to 4 cfm(113.3 L/min)per 100 square feet(9.29 m2 of conditioned floor area when tested at a pressure differential of 0.1 inches w.g.(25 Pa)across the entire system, including the manufacturer's air handler enclosure.All register boots shall be taped or otherwise sealed during the test. 3. Test for ducts within thermal envelope:Where all ducts and air handlers are located entirely within the building thermal envelope,total leakage shall be less than or equal to 8.0 cubic feet per minute(226.6 L/min)per 100 square feet(9.29 m2)of conditioned floor area.For forced air ducts,a maximum of 10 linear feet of return ducts and 5 linear feet of supply ducts may be located outside the conditioned space.All metallic ducts located outside the conditioned space must have both transverse and longitudinal joints sealed with mastic.If flex ducts are used,they cannot contain splices.Flex duct connections must be made with nylon straps and installed using a plastic strapping tensioning tool.Ducts located in crawl spaces do not qualify for this exception. R502.3.2 Heating and cooling systems.HVAC ducts newly installed as part of an addition shall comply with Section R403. Exception:The following need not comply with the testing requirements of Section R403.3.3: 1. Additions of less than 150 square feet. 2. Duct systems that are documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in WSU RS-33. 3. Existing duct systems constructed,insulated or sealed with asbestos. R503.1.2 Heating and cooling systems.New heating,cooling and duct systems that are part of the alteration shall comply with Section R403. Exceptions: 1. Where ducts from an existing heating and cooling system are extended,duct systems with less than 40 linear feet in unconditioned spaces shall not be required to be tested in accordance with Section R403.2.2. 2. Existing duct systems constructed,insulated or sealed with asbestos. 3. Replacements of space heating.equipment shall not be required to comply with Section R403.13 where the rated capacity of the new equipment does not exceed the rated capacity of the existing equipment. WASHINGTON STATE UNIVERSITY WSEC_Residential Energy Code Form V Energy Program Building Air Leakage Test Results House address or lot number: City&ZIP Code: Conditioned Floor Area (sf): Calculated Volume: Dwelling Unit Enclosure Area: (similar toSGA orELA) Type of air barrier test: (circle): New Home Addition Remodel Source(circle): Plans Estimated Measured R402.4.1.3.1 Dwelling unit leakage rate. The maximum air leakage rate for any dwelling unit under any compliance path shall not exceed 4.0 air changes per hour.Testing shall be conducted with a blower door test at a test pressure of 0.2 inches w.g.(50 Pa).Exception:Additions tested with the existing home having a combined maximum air leakage rate of 7 air changes per hour.To qualify for this exception the date of construction of the existing dwelling must be prior to the 2009 Washington State Energy Code. Where: CFM50= Blower door fan flow at 50 Pascal pressure difference Volume=Conditioned floor area of the housing unit x ceiling height SF Blower Door Test Result: ACH50 CFM@50Pa OR R402.4.1.3.2 Group R-2 multifamily building leakage rate. For Group R-2 multifamily buildings,the maximum leakage rate for any dwelling unit shall not exceed 0.25 cfm per square foot of the dwelling unit enclosure area. Testing shall be conducted with a blower door at a test pressure of 0.2 inches w.g.(50 Pa).Doors and windows of adjacent dwelling units(including top and bottom units)shall be open to the outside during the test. (Take the CFM and Divide it by the total area of the enclosure area) MF Blower Door Test Result: CFM@50Pa CFM/EA(enclosure area)SF Ring circle one if applicable): Open A B C D Blower door fan location: Weather conditions: I certify that these blower door results are accurate and determined using standard industry protocol: Company name: Technician: Technician signature: Date: Phone number: R402 4 1 2 Testing The building or dwelling unit shall be tested for air leakage.Testing shall be conducted in accordance with RESNET/ICC 380 ASTM E779,or ASTM E1827. WASH INGTON STATE UNIVERSITY WSEC-Residential Energy Code Form AJ r�4 I Energy Program Building Air Leakage Test Results R402.3.6 Fireplaces.New wood-burning fireplaces shall have tight-fitting flue dampers or doors and outdoor combustion air.When using tight-fitting doors on factory-built fireplaces listed and labeled in accordance with UL 127,the doors shall be tested and listed for the fireplace.When using tight-fitting doors on masonry fireplaces,the doors shall be listed and labeled in accordance with UL 907. Gas fireplaces shall comply with the efficiency requirements in Section R403.7.2. R402.4 Air leakage.The building thermal envelope shall be constructed to limit air leakage in accordance with the requirements of Sections R402.4.1 through R402.4.5. R402.4.1 Building thermal envelope air leakage.The building thermal envelope shall comply with Sections R402.4.1.1 through R402.4.1.3.The sealing methods between dissimilar materials shall allow for differential expansion and contraction. R402.4.1.1 Installation.The components of the building thermal envelope as listed in Table R402.4.1.1 shall be installed in accordance with the manufacturer's instructions and the criteria listed in Table R402.4.1.1,as applicable to the method of construction.Where required by the code official,an approved third party shall inspect all components and verify compliance. R402.4.1.2 Testing.The building or dwelling unit shall be tested for air leakage.Testing shall be conducted in accordance with RESNET/ICC 380,ASTM E779,or ASTM El827.Test pressure and leakage rate shall comply with Section R402.1.3.A written report of the test results,including verified location and time stamp of the date of the test,shall be signed by the testing agency and provided to the building owner and code official.Testing shall be performed at any time after creation of all penetrations of the building thermal envelope. Once visual inspection has confirmed air sealing has been conducted in accordance with Table R402.4.1.1,operable windows and doors manufactured by small business are permitted to be sealed off at the frame prior to the test. Testing of single-family dwellings and townhouses shall be conducted in accordance with RESNET/ICC 380.Test pressure and leakage rate shall comply with Section R402.1.3.1. For Group R-2 occupancies,testing shall be conducted in accordance with ASTM E779,ASTM E1827,or ASTM E3158. Test pressure and leakage rate shall comply with Section R402.1.3.2.The individual performing the air leakage test shall be trained and certified by a certification body that is,at the time of permit application,and ISO 17024 accredited certification body including,but not limited to,the Air Barrier Association of America. Exception:For dwelling units that are accessed directly from the outdoors,other than detached one family dwellings and townhouses,an air leakage rate not exceeding 0.4 cfin per square foot of the dwelling unit enclosure area shall be an allowable alternative.Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g.(50 Pascals)in accordance with RESNET/ICC 380,ASTM E779 or ASTM E1827.For the purpose of this test only,enclosure area to be calculated as the perimeter of the dwelling unit,measured to the outside face of the exterior walls,and the centerline of party walls,times 8.5 feet,plus the ceiling and floor area.Doors and windows of adjacent dwelling units(including top and bottom units)shall be open to the outside during the test.This exception is not permitted for dwelling units that are accessed from corridors or other enclosed common areas. During testing: 1.Exterior windows and doors,fireplace and stove doors shall be closed,but not sealed,beyond the intended weatherstripping or other infiltration control measures. 2.Dampers including exhaust,intake,makeup air,as well as backdraft and flue dampers shall be closed,but not sealed beyond intended infiltration control measures. 3.Interior doors,if installed at the time of the test,shall be open,access hatches to conditioned crawl spaces and conditioned attics shall be open. 4.Exterior or interior terminations for continuous ventilation systems and heat recovery ventilators shall be turn off and sealed.2021 Washington State Energy Code RE-27 5.Heating and cooling systems,if installed at the time of the test,shall be tamed off. 6.Supply and return registers,if installed at the time of the test,shall be fully open. Exception:Additions less than 500 square feet ofeonditioned floor area. Property address: Builder/registered design professional name: Builder/reg.design pro.signature: Conditioned floor area: ft2(per building permit) Testing Results HVAC System Duct Leakage Testing(R403.3) Circle one R-Values R303.1.1 All ductwork and air handler in conditioned space?(See Option 4.2) Y or N Ceiling/ Vaulted R- Floors: Over unconditioned space R- All ductwork in unconditioned spaces buried and tested at 3%total leakage,and air Y or N Attic: Attic R- Slab-on-grade floor R- handier in conditioned space?(See Option 4.1.) Full insulated slab?Y/N Circle one All ductwork&air handler outside conditioned space insulated to minimum R-S? Y or N Walls: Above grade R- y ( ) Air handler present at duct leakage test?(Total leakage 4%if yes,3%if no) Y or N Below,int.R- Doors: R- ,R- R- HVAC leakage to outside test conducted at final Y or N Below,ext.R- Do HVAC duct leakage tests include GPS and time stamp verification? Y or N U-Value of Windows,Skylights and Doors(R303.1.1.3) HVAC system leakage test calculated design target: CFM @ 25 Pe Average area weighted U-value from Glazing Worksheet Average U-- HVAC system leakage test measured results: CFM @ 25 Pe. Energy Equalization Table(Tables R406.2 and Energy Credits able R406.3 Building Leakage:Testing(R402.4.1.2) System Type Number(1 to 5) (Select one) Dwelling unit leakage test calculated design target: ACH @ 50 Pa Energy Credits selected(1 to 7) Dwelling unit leakage test,measured results: ACH @ 50 Pa Fuel Normalization Credit +Total Energy Credits =Total Credits Whole Building Leakage test(112 non-corridor only)design target: CFM/sf @ 50 Pa Whole Building Leakage test(112 non-corridor only)measured: CFM/sf @ 50 Pa Heating, Cooling and Domestic Hot Water System Type Manufacturer and Model Number Efficient Do building leakage tests include GPS and time stamp verification? Y or N Whole House Ventilation>System Measured Flow Rates(MI505.4 IRC-WA) Circle one Heating ' Cooling Are the system controls correctly labeled? Y or N DHW The Whole House Ventilation(WHV)system operation and maintenance(O&M) Y or N instructions were provided to the building owner? Drain water heat Provided to: on (date) recovery Onsite Renewable Energy Electric Power System Whole House Ventilation System Type:(Circle one) System type System design capacity kW (1)Whole house exhaust fan,location Rated annual generation kWh/yr (2)Balanced HRV/ERV,location For R2 low-rise,serves more than one unit? Y or N A liances Ener Star? Manufacturer and Model Circle one) (3)Supply or HRV WHV integral to the air handler. Describe system control sequence of ( operations or reference to design submittal: Dish washer Y or N Refrigerator Y or N Specify run-time: hours per day CFM Washer Y or N WHV calculated design minimum flow rate per plan submittal: Dryer Y or N WHV measured min flow rate at commissioning:Exhaust `CFM,Supply CFM Vented or unvented? If vented,CEF ratingDo WHV flow tests include GPS&time stamp verification? Y or N Gas fireplace/heating stove(Section R402.4.2) Fireplace efficiency(FE) HRV/ERV sensible heat recovery efficiency: Heating or Decorative?(Circle one) Commissioning Notes: Other Mandatory Requirements Circle one All other mandatory requirements of WSEC-R have been met? Y or N 2021 Washington State Energy Code—Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family—New&Additions(effective March 15,2024) REVIEWED FOR CODE COMPLIANCE MASON COUNTY BUILDING DEPARTMENT Permit# I Address or Lot & Block WASHINGTON STATE UNIVERSITY Z7 v Energy program Cityj p/` Zi These requirements apply to all the IRC building types, including detached one-and two-family dwellings and multiple single-family dwellings(townhouses). Instructions: This single-family project uses the requirements of the Prescriptive Path below to incorporate the minimum values listed. Based on the conditioned floor area of the structure,the number of required additional credits must be selected by the permit applicant. Provide all information from the following tables in as building permit drawings:Table R402.1.2-Insulation and Fenestration Requirements by Component,Table R406.2-Fuel Normalization Credits and R406.3 Energy Credits. Authorized Representative Signature Date All Climate Zones Table 402 1 3 ` R-Value a U-factor Fenestration U-Factor b.l n/a 0.30 MUST BE Skylight U-Factor b n/a 0.50SE PLANS THE iQB SITE Ceiling e 60 n/a CTION Wood Frame Wall g•I 20+5 or 13+10 n/a Floor 30 f r A I I n/a Below Grade Wall`•' 10/15/21 int+5TB n/a Slab d f R-Value& Depth 10,4 ft n/a R-values are minimums.U-factors and SHGC are maximums.When insulation is installed in a cavity which is less than the label or design a thickness of the insulation,the compressed R-value of the insulation from Appendix Table A101.4 shall not be less than the R-value specified in the table b The fenestration U-factor column excludes skylights. "10/15/21+5TB"means R-10 continuous insulation on the exterior of the wall,or R-15 continuous insulation on the interior of the wall,or R- 21 cavity insulation plus a thermal break between the slab and the basement wall at the interior of the basement wall."10/15/21+STB"shall c be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall."5TB"means R-5 thermal break between floor slab and basement wall. d R-10 continuous insulation is required under heated slab on grade floors.See Section R402.2.9.1. For single rafter-or joist-vaulted ceilings,the insulation may be reduced to R-38 if the full insulation depth extends over the top plate of the e exterior wall. R-7.5 continuous insulation installed over an existing slab is deemed to be equivalent to the required perimeter slab insulation when applied f to existing slabs complying with Section R503.1.1.If foam plastic is used,it shall meet the requirements for thermal barriers protecting foam plastics. g For log structures developed in compliance with Standard ICC 400,log walls shall meet the requirements for climate zone 5 of ICC 400. h Int.(intermediate framing)denotes framing and insulation as described in Section A103.2.2 including standard framing 16 inches on center, 78 percent of the wall cavity insulated and headers insulated with a minimum of R-10 insulation. The first value is cavity insulation,the second value is continuous insulation.Therefore,as an example,"R13+10"means R-13 cavity i insulation plus R-10 continuous insulation A maximum U-factor of 0.32 shall apply to vertical fenestration products installed in buildings located above 4000 feet in elevation above sea j level,or in windborne debris regions where protection of openings is required under Section R301.2.1.2 of the International Residential Code. _ l ...- 22_ L Prescriptive Path Path—Single Family WSEC-R 2021 Edition EPCA C103(V 01/2024) 1 N� I l� 3.�� Sri 2021 Washington State Energy Code-Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family-New& Additions(effective March 15,2024) Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 (fuel normalization credits) and Table 406.3 (energy credits)to achieve the following minimum number of credits.To claim this credit,the building permit drawings shall specify the option selected and the maximum tested building air leakage,and show the qualifying ventilation system and its control sequence of operation. 1. Small Dwelling Unit: ........................................................................................... 5.0 credits Dwelling units less than 1500 square feet in conditioned floor area with less than 300 square feet of fenestration area.Additions to existing building greater than 500 square feet of heated floor area but less than 1500 square feet. 2. Medium Dwelling Unit: ...................................................................................... 8.0 credits All dwelling units that are not included in#1,#3 or#4. 3. Large Dwelling Unit: ..........................................................................................9.0 credits Dwelling units exceeding 5000 square feet of conditioned floor area. 4. Dwelling units serving Group R-2 occupancies: ................................................ 6.5 credits Section R401.1 and residential building Section R202 for Group R-2. S. Additions 150 square feet to 500 square feet: .....................................................2.0 credits The drawings included with the building permit application shall identify which options have been selected and the point value of each option, regardless of whether separate mechanical, plumbing,electrical,or other permits are utilized for the project Before selecting your credits on this Summary table, review the details in Table 406.3 (Single Family), on page 4. 77 Table 0 z EN R P 9WALIZATIQN CREDIT I _ __ Credits= System _ Description of Prima Heating Source select ONE p Primary g system Type e mil? — 1 For combustion heating equipment meeting minimum federal efficiency standards for the El equipment listed in Table C403.3.2(5)or C403.3.2(6) For an initial heating system using a heat pump that meets federal standards for the equipment 2 listed in Table C403.3.2(2)and supplemental heating provided by electric resistance or a combustion furnace meeting minimum standards listed in Table C403.3.2(5)b found in the 2021 ❑ WSEC COMMERCIAL ENERGY CODE . ....................... 3 For heating system based on electric resistance only(either forced air or Zonal) _ 0.5 ❑ For heating system using a heat pump that meets federal standards for the equipment listed in 41 ITable C403.3.2(2)or C403.3.2(9)or Air to water heat pump units that are configured to provide 3.0 both heating heating and c . _ _ _. _ _ �__.___.__. .. __ _.___. _ . For heating system based on electric resistance with: 1. Inverter-driven ductless mini-split heat pump system installed in the largest zone in the 5 dwelling, 2.0 ❑ or 2. With 2kW or less total installed heating capacity per dwelling �._ .......... _ ......... . . _..._ - .. ..... . a.See Section R401.1 and residential building in Section R202 for Group R-2 scope. b.The gas back-up furnace will operate as fan-only when the heat pump is operating.The heat pump shall operate at all temperatures above 38°F(3.3°C) (or lower). Below that"changeover"temperature,the heat pump would not operate to provide space heating.The gas furnace provides heating below 38°F(3.3°C) (or lower). c.Additional points for the HVAC system are included in Table R406.3. Prescriptive Path-Single Family WSEC-R 2021 Edition EPCA C103(V 01/2024) 2 2021 Washington State Energy Code-Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family-New&Additions(effective March 15,2024) ................. I Summary of Table R406.3 Credits- limited to one Options Energy Credit Option Descriptions energy option Comments: from each category i 1.1 Efficient Building Envelope 0.5 1.2 Efficient Building Envelope 1.0 ❑ 1.3 Efficient Building Envelope 1.5 ❑ 1.4 Efficient Building Envelope - 2.5 ❑ 2.1 Air Leakage Control and Efficient Ventilation 1.0 ❑ _ I 2.2 Air Leakage Control and Efficient Ventilation 1.5 ❑ 2.3 Air Leakage Control and Efficient Ventilatio 2.0 ❑ 3.1a High Efficiency HVAC 1.0 ❑ i. _._ ...._........._..... ........_..�,. .____-...-_4 3.2a High Efficiency HVAC 0.5 ❑ 3.31,1,1 High Efficiency HVAC _ 0.5 ❑ 3.410 High Efficiency HVAC 1.5 ❑ 1 3.5d High Efficiency HVAC 1.5 ❑ 3.6' High Efficiency HVAC 1.0 0 13 7a,d,e High Efficiency HVAC 2.0 ❑ 1 3.8a,d High Efficiency HVAC 1.0 ❑ 3.9` High Efficiency HVAC 1.5 ❑ 3.10 High Efficiency HVAC Lj 2.5 ❑ ! 3.11 High Efficiency HVAC 0.5 ❑ i 4.1 High Efficiency HVAC Distribution System 0.5 ❑ 5.1d Efficient Water Heating 0.5 ❑ I 5.2 Efficient Water Heating 0.5 ❑ 5.3 Efficient Water Heating - 0.5 El 5.4 Efficient Water Heating 1.0 ❑ 5.5 Efficient Water Heating 1.5 ❑ 5.6 Efficient Water Heating -- 2.0 ❑ 5.7 'Efficient Water Heating 2.5 ❑ S.8 ,Efficient Water Heating 2.5 ❑ -- _ 6.1e i Renewable Electric Energy (4.5 credits max) 0.5-4 5 0.o 7.1 A pliance Package 0.5 ❑ ----- -----....-- Total Credits s.o ca c:u ale rot�l a.An alternative heating source sized at a maximum of 0.5 Watts/ft2(equivalent)of heated floor area or 500 Watts,whichever is bigger,may be installed in the dwelling unit. b.See Section R401.1 and residential building in Section R202 for Group R-2 scope. c.Option 3.11 can only be taken with Options 3.1 and 3.3.To qualify to claim Option 3.11 with 3.3,the system shall be a 1-2 speed heat pump system.Variable capacity heat pumps are ineligible from claiming this option. d.This option may only be claimed if serving System Type 4 or 5 from Table R406.2. e.Primary living areas include living,dining,kitchen,family rooms,and similar areas. f Option 3.11 may only be taken with Efficient Water Heating Options 5.1 or 5.2.Equipment sizing for space heating shall be calculated as provided in Section R403.7 with increased capacity to provide a minimum of 75 percent of peak hot water demand or shall be sized in accordance with approved manufacturer's specifications or guidance.Supplementary heat for water heating system shall be in accordance with Section R403.5.7. Prescriptive Path-Single Family WSEC-R 2021 Edition EPCA C103(V2/l/2024) 3