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Home My WebLink AboutBLD2007-01061 Deck - BLD Application - 6/14/2007 MASON COUNTY PERMIT NO. BUILDING PERMIT APPLICATION of C4 426 W. Cedar• P.O. Box 186, Shelton, WA 98584 41. r ' Sheiton (360) 427-9670 • Belfair (360) 275-4467 • Elma (360) 482-5269KC On the web www.co.mason.wa.us APPLICANT INFORMATION CONTRACTOR INFORMATION Owner Company Name Mailing Address Or J Mailing Address City (�C State k, Zip Code City State Zip Code Phone Other Ph. Phone Other Ph. Lien/Title Holde Contractor Reg. # Exp. E mail addres ba ch id 6d uhj ve L a bigG E Mail Address Drivers Lic.# A Cjj E 3PC DOB 1011-.2,IZL Drivers Lic.# DOB SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic Existing Septic Connect to Water System Name of Water System Well Sewer System Name of Sewer System PARCEL INFORMATION - 12 Digit Parcel No. Fire District ,/ Legal Description - 5 Site Address(Please include�reet e, street n mber and city) K- �- Directions to site M1�- W� 0 F" Will timber be cut and sold in parcel preparation?Yes/ o Is property within 200' of Saltwater "u' Lake River/Creek Pond Wetland Seasonal Runoff Stream Slopes or Bluffs Is this permit submittal the result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No TYPE OF JOB - New �/* Add Alt Repair Other PRIMARY RESIDENCE n SEASONAL 0 Use of Building DE EC Describe Work No. of Bedrooms No. of Bathroom S a Footage- 1st Floor 2nd Floor 3rd Floor Basement De or vered Deck Other Sq. ft. Garage Attached Detac ed Carport Attached Detached MANUFACTURED HOME INFORMATION - Make Model Year Length Width Serial No. No. of Bedrooms No. of Bathrooms Type of Heat Purchase Price$ Replacement Unit? Yes/ No Installer Name Certification No. OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation. Acknowledgement of such is by signature below. I declare that I am the owner,owners legal representative,or the contractor. I further declare that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above described property and structure for review and inspection. This permit/application becomes null & void if work or authorized construction is not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY MEAN OFAPROGRESS I SPE ION.IN ITYOF THIS PERMIT APPLICATION OF 1180 DAYS WILL INVALIDATE THE APPLICATION. X Date: !�—`��(/ Owner Owners Representative/Contractor (indicate which one) FOR OFFICIAL USE BEYOND THIS POINT Accepted by: X Date DEPARTMENTAL REVIEW APPROVED DENIED NOTES Building Department Planning Department Environmental Health Department Fire Marshal FEES Building Permit Fee '2,5 Site Inspection Plan Review Fee EH Review Fee Plumbing & Base Fee Planning Review Fee Mechanical & Base fee Other Wood /Gas/ Pellet Stove Fee State Fee .f. soi Violation Fee / �S' Zs Pre-Paid at Submittal Valuation $ 69 r- • sue' - TOTAL FEES H . r i �» OF ,� 1 -■ SamIsma1 i� ■■ ONE ■ ■ ■ �� 1 No W Ii■ NMI - . Mil Evil 51111 1111011111 � .� Ell, �. . Mtn S � a• I c C � rww��.. �� ■I , ►'tom. 1 J � �■ rq ►.. IsE1 mom Elas NEE mks CH .. • Uniformly Loaded Floor Beam[2003 International Residential Code (01 NDS)1 Ver: 7.01.10 By: alvin christensen , mason county dcd on: 06-18-2007 : 08:42:00 AM Project: dennis bachel- Location: deck beam Summary: 3.5 IN x 5.5 IN x 7.0 FT /#2- Hem-Fir-Dry Use Section Adequate By: 30.3% Controlling Factor: Section Modulus/Depth Required 4.82 In Deflections: Dead Load: DLD= 0.04 IN Live Load: LLD= 0.14 IN = U613 Total Load: TLD= 0.17 IN = L/482 Reactions(Each End): Live Load: LL-Rxn= 560 LB Dead Load: DL-Rxn= 153 LB Total Load: TL-Rxn= 713 LB Bearing Length Required (Beam only,support capacity not checked): BL= 0.50 IN Beam Data: Span: L= 7.0 FT Unbraced Lenqth-Top of Beam: Lu= 0.0 FT Live Load Deflect. Criteria: L/ 360 Total Load Deflect. Criteria: L/ 240 Floor Loadinq: Floor Live Load-Side One: LL1= 40.0 PSF Floor Dead Load-Side One: DL1= 10.0 PSF Tributary Width-Side One: TW1= 4.0 FT Floor Live Load-Side Two: LL2= 40.0 PSF Floor Dead Load-Side Two: DL2= 10.0 PSF Tributary Width-Side Two: TW2= 0.0 FT Live Load Duration Factor: Cd= 1.00 Wall Load: WALL= 0 PLF Beam Loadinq: Beam Total Live Load: wL= 160 PLF Beam Self Weiqht: BSW= 4 PLF Beam Total Dead Load: wD= 44 PLF Total Maximum Load: wT= 204 PLF Properties For:#2-Hem-Fir Bendinq Stress: Fb= 850 PSI Shear Stress: Fv= 150 PSI Modulus of Elasticity: E= 1300000 PSI Stress Perpendicular to Grain: Fc_perp= 405 PSI Adjusted Properties Fb'(Tension): Fb'= 1105 PSI Adjustment Factors: Cd=1.00 CF=1.30 Fv': Fv'= 150 PSI Adjustment Factors: Cd=1.00 Design Requirements: Controllinq Moment: M= 1247 FT-LB 3.5 ft from left support Critical moment created by combining all dead and live loads. Controllinq Shear: V= 627 LB At a distance d from support. Critical shear created by combining all dead and live loads. Comparisons With Required Sections: Section Modulus (Moment): Sreq= 13.54 IN3 S= 17.65 IN3 Area(Shear): Areq= 6.27 IN2 A= 19.25 IN2 Moment of Inertia(Deflection): Ireq= 28.49 IN4 1= 48.53 IN4 Floor Joist(2003 International Residential Code (01 NDS))Ver: 7.01.10 By: alvin christensen , mason county dcd on: 06-18-2007 : 08:54:24 AM Project: dennis bachel-Location:floor joist spam Summary: 1.5 IN x 7.25 IN x 8.0 FT(7+ 1 )(a) 16 O.C./#2- Hem-Fir- Dry Use Section Adequate By:213.5% Controlling Factor: Moment of Inertia/Depth Required 4.95 In Center Span Deflections: Dead Load: DLD-Center= 0.01 IN Live Load: LLD-Center= 0.05 IN = U1806 Total Load: TLD-Center= 0.06 IN = U1459 Right Cantilever Deflections: Dead Load: DLD-Riqht= 0.00 IN Live Load: LLD-Riqht= -0.02 IN =2U1128 Total Load: TLD-Right= -0.03 IN =2U919 Center Span Left End Reactions(Support A): Live Load: LL-Rxn-A= 187 LB Dead Load: DL-Rxn-A= 46 LB Total Load: TL-Rxn-A= 232 LB Bearinq Lenqth Required (Beam only,support capacity not checked): BL-A= 0.38 IN Center Span Riqht End Reactions(Support B): Live Load: LL-Rxn-B= 244 LB Dead Load: DL-Rxn-B= 61 LB Total Load: TL-Rxn-B= 305 LB Bearinq Lenqth Required (Beam only,support capacity not checked): BL-B= 0.50 IN Dead Load Uplift F.S.: FS= 1.5 Joist Data: Center Span Lenqth: L2= 7.0 FT Right Cantilever Lenqth: L3= 1.0 FT Floor sheathinq applied to top of joists-top of joists fully braced. Live Load Duration Factor: Cd= 1.00 Live Load Deflect. Criteria: U 360 Total Load Deflect. Criteria: U 240 Center Span Loadinq: Uniform Floor Loading: Live Load: LL-2= 40.0 PSF Dead Load: DL-2= 10.0 PSF Total Load: TL-2= 50.0 PSF Total Load Adjusted for Joist Spacing: wT-2= 67 PLF Riqht Cantilever Loading: Uniform Floor Loading: Live Load: LL-3= 40.0 PSF Dead Load: DL-3= 10.0 PSF Total Load: TL-3= 50.0 PSF Total Load Adjusted for Joist Spacing: wT-3= 67 PLF Properties For:#2-Hem-Fir Bendinq Stress: Fb= 850 PSI Shear Stress: Fv= 150 PSI Modulus of Elasticity: E= 1300000 PSI Stress Perpendicular to Grain: Fc-perp= 405 PSI Adjusted Properties Fb'(Tension): Fb'= 1173 PSI Adjustment Factors: Cd=1.00 CF=1.20 Cr=1.15 Fv': Fv'= 150 PSI Adjustment Factors: Cd=1.00 Design Requirements: Controllinq Moment: M= 405 FT-LB 3.5 Ft from left support of span 2(Center Span) Critical moment created by combining all dead loads and live loads on span(s)2 Controllinq Shear: V= 201 LB At a distance d from right support of span 2(Center Span) Critical shear created by combining all dead loads and live loads on span(s)2, 3 Comparisons With Required Sections: Section Modulus(Moment): Sreq= 4.14 IN3 S= 13.14 IN3 Area (Shear): Areq= 2.01 IN2 A= 10.88 IN2 Moment of Inertia (Deflection): Ireq= 15.20 IN4 1= 47.63 IN4 O MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O.Box 186 Shelton,WA 98584 (360) 427-9670 Belfair(360) 275-4467 Elma (360) 482-5269 www.co.masonma.us Inspection Request Line (360) 427-7262 DECK/ GARAGE PLAN REVIEW CHECKLIST Owner: 'Detin S A-ri�� [ — Contractor: Permit Number: (D 2-o0-7 - 0 /o(o/ Site Address: (CI b Z1 E S? , 2-r / o , Plans Examiner: 74-4c— Date: 07 • 2003 International Residential Code (IRC) WAC51-51 • 2003 International Building Code (IBC) WAC51-50 T,,IUST BE • 2003 International Mechanical Code(IMC) WAC 51-52 f 0 R4S IT .. 2003 Uniform Plumbing Code (UPC) WAC 51-56 & 5.1-57 FOR 1C` lO • 2003 Washington State Energy Code (WSEC), WAC 51-11 • 2003 Washington State Ventilation and Indoor Air Quality Code (WSVIAQ), WAC 51-13 Seismic Zone 1-1 , Wind load 85 mph, exposure B, • Roof snow load- ,2s" lbs.. Per square foot. Floor live load varies,. see R301.5. The numbered items on the following pages are associated with the above referenced codes, as adopted by Mason County. The same number identifies items circled in the checklist on the approved plans. This checklist shall remain attached to the approved plans and be available during inspections by Mason County Building 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, not from stopping the progress of the project under permit. Office hours are from 8:30 a.m. until 4:30 p.m. Monday through Friday. Inspections can be scheduled by calling(360) 427-7262. From Belfair call (360) 275-4467 ext. 262. To schedule an inspection the following information will be needed: Permit number, site address, name of owner, type inspection requested, and the telephone number Mason County staff should use when they call to confirm the inspection. Word:2003plan review checklist coversheet FLOOR PLAN 1. ROOM IDENTIFICATION: Each room and the surfaces of dwellings are exempt from these intended use must be clearly defined on the plans by the requirements). applicant for plan review purposes.R106 4. SAFETY GLAZING:IRC Section R308. All glass 2. EGRESS WINDOWS: IRC Section R310. All sleeping located in areas that are considered hazardous must be rooms and basements with habitable space shall have at safety glazed as identified by the manufacturer's or least one openable emergency escape and rescue opening. installer's label. The following shall be considered Emergency escape and rescue openings shall have a hazardous locations: minimum net clear opening of 5.7 square feet. Except that 1. Glazing in swinging doors. grade floor openings shall have a minimum net clear 2. Glazing in fixed and sliding door assemblies and opening of 5 square feet(see definition below). The panels in sliding and bifold closet doors. minimum net clear opening height dimension shall be 24". 3. Glazing in storm doors. The minimum net clear opening width dimension shall be 4. Glazing in all unframed swinging doors. 20".The openings shall have a finished sill height not 5. Glazing in doors and enclosures for hot tubs, more than 44"above the floor.Emergency escape and whirlpools,saunas,steam rooms,bathtubs and rescue openings shall be operational from the inside of the shower.Glazing in any part of a building wall room without use of keys or tools.Window wells shall be enclosing these compartments where the bottom provided when egress windows have a finished sill height exposed edge of the glazing is less than 60- below adjacent ground elevation. The well shall allow the inches measured vertically above any standing or window to be fully opened and provide a minimum walking surface. accessible net clear opening of 9 square feet,with a 6. Glazing in an individual fixed or operable panel minimum dimension of 36". Window wells with a vertical adjacent to a door where the nearest vertical edge depth of more than 44"shall be equipped with a is within a 24-inch arc of the door in a closed permanent ladder. Grade floor opening definition:A position and whose bottom edge is less than 60" window or other opening located such that the sill height above the floor or walking surface. of the opening is not more than 44"above or below the 7. Glazing that meets all of the following conditions: finished ground-level adjacent to the opening. Refer to 7.1.Exposed area of an individual pane is greater handout for additional information. than 9 square feet. f 7.2. Exposed bottom edge is less than 18"above 3. SMOKE ALARMS:IRC Section R313. A smoke alarm the floor. shall be installed in each sleeping room,outside each 7.3. Top edge greater than 36"above the floor. separate sleeping area in the immediate vicinity of the 7.4. One or more walking surfaces within 36" bedrooms, and on each additional story of the dwelling, horizontally of the plane of the glazing. including basements. Each floor and basement shall have 8. All glazing in railings at least one detector.All smoke alarms shall be listed and 9. Glazing in walls and fences enclosing indoor and installed in accordance with the IRC Code and the outdoor swimming pools,hot tubs and spas household fire warning equipment provisions of NFPA where the bottom edge of the glazing is less than 72. When more than one smoke alarm is required to be 60 inches above a walking surface and within installed the alarm devices shall be interconnected in such 60"of the water's edge. a manner that the actuation of one alarm will activate all 10. Glazing adjacent to stairways,landings and of the alarms. The alarm shall be clearly audible in all ramps within 36"horizontally of a walking bedrooms over background noise levels with all surface when the exposed surface of the glass is intervening doors closed. Required smoke alarms shall less than 60"above the plane of the adjacent receive their primary power from the building wiring and walking surface. shall be equipped with a battery backup. Additions, 11. Glazing adjacent to stairways within 60" interior alterations,and repairs shall be provided with horizontally of the bottom tread of a stairway in smoke alarms as required for new dwellings;the smoke any direction when the exposed surface of the alarms shall be interconnected and hard wired. glass is less than 60"above the nose of the tread. (Exception:Smoke alarms are not required to be interconnected and hardwired where the alteration or See code for exceptions for Items I through H. repairs does not result in the removal of interior wall or ceiling finishes exposing the structure, unless there is an 5. NATURAL LIGHT&VENTILATION:IRC Section attic, crawl space, or basement available which could R308. All habitable rooms shall be provided aggregate- provide access for hard wiring and interconnection glazing area of not less than 8%of the area of such rooms. without removal of hard finishes. Repairs to the exterior Natural ventilation shall be through windows,doors, louvers or other approved openings to the outdoor air. 1 The minimum openable area to the outdoors shall be 4% of the floor area being ventilated.Exception: 1)The 10. SHOWER AREAS:IRC Section R307 and UPC Section glazed area need not be openable where the opening is 412.6,412.7,412.8. Bathtub and shower floors and walls not required by R310 and an approved mechanical above bathtubs with installed showerheads and in shower ventilation system is provided capable of producing.3S compartments shall be finished with non-absorbent ACH in the room or a Whole house mechanical surfaces that extend to a height of not less than 6-feet ventilation system is installed capable of supplying above the floor. The clear space in front of the shower outdoor ventilation air of 15 cfm per occupant computed opening shall not be less than 30". All showers shall have on the basis of two occupants for the I s`bedroom and one a minimum finished interior floor area of 1024 square occupant for each additional bedroom. 2) The glazed are inches and shall also be capable of encompassing a 30" need not be provided in rooms where exception I is circle. These dimensions shall be maintained to a point satisfied and artificial light is capable ofproducing an 70" above the shower drain outlet. average illumination of 6 foot-candles over the area of the room at a height of 30 inches above the floor level. 16. APPLIANCE LOCATIONS:IRC Chapter M1307, M2005,IMC Section 303,and UPC,Section 308&309. 6. EXHAUST FANS:IRC Section M1506,WSVIAQ Installation of appliances shall conform to the conditions Section 302.2.1,IMC Section 501.2,502.7.3.6. Exhaust of their listing and label and the manufacturer's fans are required in each kitchen,bathroom,water closet installation instructions. The manufacturer's operating room,laundry facility,indoor swimming pool,spa and and installation instructions shall remain attached to the other rooms where excess water vapor or cooking odor is appliance. Fuel burning appliances shall not be located produced.The air removed by every mechanical exhaust in,or obtain combustion air from sleeping rooms, system shall be discharged outdoors at a point where it bathrooms,toilet rooms,or storage closets.Exception: 1) will not cause a nuisance and from which it cannot again direct vent appliances that obtain all combustion air from be readily drawn in by a ventilating system. Air shall not the outdoors or 2)Appliances located in a dedicated be exhausted into an attic or crawl space. The termination enclosure in which combustion air is taken directly from point shall be located at least 3-feet from the property line. the outdoors in accordance with IMC,section 703. See energy section of this checklist for more specific Access to such enclosure shall be through a WSEC requirements. approved solid door, weatherstripped and equipped with an approved self-closing device. Fuel-fired furnaces and 7. CLOTHES DRYERS:IRC Section M1501,G2439,& boilers installed in closets and alcoves shall be listed for IMC Section 504.Exhaust ducts shall be constructed of such installation.Equipment installed in outdoor locations metal and shall have a smooth interior finish.Exhaust shall be either listed for outdoor installation or provided ducts shall terminate outside the building in accordance with protection from outdoor environment factors that with the dryer manufacturer's installation instructions. influence operability,durability and safety of the Screens shall not be installed at the duct termination. equipment. Appliances designed to be in fixed positions Ducts shall be equipped with a backdraft damper. shall be fastened or anchored in an approved manner. Exhaust ducts shall not be connected with sheet-metal screws or other fasteners that will obstruct the exhaust 17. APPLIANCES LOCATED IN GARAGE:IRC Section flow. The minimum duct diameter shall be 4"and shall M1307,IMC Section 303.4,304.3,IBC 1607.7.3. be supported and secured in place.The male end of the Appliance located in a garage,carport or other location duct at overlapped duct joints shall extend in the direction where subject to mechanical damage shall be protected of airflow. Flexible transition ducts used to connect the with approved barriers. Vehicle barrier systems for dryer to the exhaust duct system shall be limited to single passenger cars shall be designed to resist a single load of lengths,not to exceed 8 feet in length and shall be listed 6,000 lbs.Applied horizontally in any direction to the and labeled in accordance with UL2158A. Transition barrier system and shall have anchorage or attachment ducts shall not be concealed within construction. The capable of transmitting this load to the structure. For maximum length of a clothes dryer exhaust duct shall not design of the system,the load shall be assumed to act at a exceed 25 feet from the dryer location to the wall or roof minimum height of 1'6"above the floor or ramp surface termination. The maximum length of the duct shall be on an area not to exceed 1 sq.ft. Equipment and reduced 2.5 feet for each 45-degree bend and 5 feet for appliances having an ignition source shall be elevated each 90-degree bend. The maximum length of the exhaust such that the source of ignition is not less than least 18" duct does not include the transition duct. Exception: above the floor surface on which the equipment or Ducts installed in accordance with the dryer appliance stands. Rooms or spaces that are not part of the manufacturer's installation instructions. living space of a dwelling unit and that communicate with the private garage through openings shall be considered to be part of the garage and appliances located in the space 9. WATER CLOSET CLEARANCES: IRC Section R307, shall be elevated as specified above. UPC Section 408.6. Water closet shall be located in a clear space not less than 30"in width. The clear space in front shall not be less than 24". 2 18. WATER HEATERS: IRC Section M1307.2,M2005, honeycomb core steel doors not less than 1-3/8"thick,or and UPC 608.Where water heaters or hot water storage 20-minute fire-rated doors. tanks are installed in locations where leakage of the tanks or connections will cause damage,the tank or water heater 24. GARAGE/DWELLING SEPARATION:IRC Section shall be installed in a 24 gage galvanized steel pan or R309.2,R309.1.1.The garage shall be separated from the other pan approved for such use. The pan shall be at least residence and its attic area by not less than''/z"gypsum 1.5"deep and shall be drained by an indirect waste pipe board applied to the garage side. Garages beneath with a minimum V diameter drain to the exterior of the habitable rooms shall be separated from all habitable Wilding not less than 6"and not more than 24"above the rooms above by not less than 5/8"Type X gypsum board adjacent ground surface.Temperature and pressure relief or equivalent. Where the separation is a floor-ceiling ' valves shall be drained to the outside of the building. assembly,the structure supporting the separation shall Drain may not be trapped and must terminate not more also be protected by not less than%"gypsum board.or than 2'nor less than 6"above the ground or the flood equivalent. Ducts in the garage and ducts penetrating the level of the area receiving the discharge and pointing walls or ceilings separating the dwelling from the garage downward. Water heaters shall be strapped to resist shall be constructed of a minimum 26-gage sheet metal or horizontal displacement due to earthquake motion. other approved material and shall have no openings into Twenty-two(22)gage x%."strapping shall be used and be the garage. placed at points within the upper one-third(1/3)and lower one-third(1/3)of it's vertical dimensions. At the lower 25. SEPARATION BETWEEN DWELLING UNITS:IRC point,a minimum distance of 4"shall be maintained Section 317. Walls and floors assemblies separating above the controls. Lag screws not less than Y4"in dwelling units in 2-family dwellings shall not be less than diameter must be used to anchor the restraints to the wall 1-hr fire-resistive rating. and each lag screw must have at least 1-%"thread penetration into a stud wall. A flat washer must be 26. FIRE-RESISTANCE OF EXTERIOR WALLS:IRC installed between each lag screw and the strap for R302.Exterior walls with a fire separation distance less reinforcement.. WSEC Section 504.2.1. All electric water than 3'shall be not less than a 1-hour fire-resistive rating heaters shall be placed on an R-10 pad when located in an with exposure from both sides.Projections shall not unheated space or on a concrete floor. extend to a point closer than 2'from the line used to determine the fire separation distance. Detached garages accessory to a dwelling located within 2'of a lot line may 20. MANUFACTURER'S SPECS: IRC Section M1302, have roof eave projections not exceeding 4". Projections M1303,and IMC 304.1. All appliances shall be listed extending into the fire separation distance shall have not and bear a permanent factory applied nameplate(s)affixed less than one-hour fire-resistive construction on the to the appliances with manufacturer's name or trademark, underside. Openings shall not be permitted in the exterior model number,serial number,and seal or mark of testing wall of a dwelling or accessory building with a fire agency. The installer shall leave the manufacturer's separation distance less than 3'. Exception:Foundation installation and operating instructions attached to the vents installed in compliance with this code are permitted. appliance. 21. VACUUM BREAKERS:UPC Section 603.4.7. Potable 28. MINIMUM CEILING HEIGHTS: IRC R305. water outlets with hose attachments other than water Habitable rooms,hallways,corridors,bathrooms,toilet heater drains,and clothes washer connections shall be rooms,laundry rooms and basements shall have a ceiling protected by a listed non-removable backflow preventer,a height of not less than 7',measured from the finished non-removable hose bib type vacuum breaker,or an floor to the lowest projection from the ceiling. atmospheric vacuum breaker installed at least 6"above the highest point of usage located on the discharge side of 29. ATTIC ACCESS:IRC R807.1. Attics that exceed 30 sq. the last valve. ft.and have a vertical height of 30"or greater must be provided with minimum access openings of not less than 22"x 30". The attic access shall be located in a hallway 22. TRAP PRIMERS:UPC Section 1007. Floor drains or or other readily accessible location with a 30"minimum similar traps connected to the drainage system and subject unobstructed headroom in the attic space above the access to infrequent use shall be protected with a trap seal primer opening. and shall be accessible for maintenance. 30. EXTERIOR DOORS/EXITS:IRC R311.4.1. At least 1 23. GARAGE/DWELLING DOOR/OPENINGS: IRC exit doorway shall be side hinged and not less than 3'in Section R309.1 Openings between the garage and width and not less than 6'8"in height. The exit door shall residence shall be equipped with solid wood doors not provide direct access from the habitable portions ofthe less than 1-3/8 inches(35mm)in thickness,solid or dwelling to the exterior without requiring travel through a garage. Access to habitable levels not having an exit shall 3 • be by a ramp or a stairway in accordance to applicable IRC sections 311.6 or 311.5. Egress doors shall be 34. STAIR WIDTH:IRC Section R311.5.1 Stairways shall readily openable from the side from which egress is to be not be less than 36"in clear width at all points above the made without the use of a key or special knowledge or handrail height and below the required headroom height. effort. Handrails shall not project more than 4 ''/a."on either side of the stairway and the minimum clear width of the 31. LANDINGS:IRC R311.4.3,R311.5.4. There shall be a stairway at and below the handrail height,including treads floor or landing on each side of all doors. Exception: and landings,shall not be less than 31 '/2"where the Where a stairway of two or fewer risers is located on the handrail is installed on one side and 27"where handrails exterior side of a door, other than the required exit door, are installed on both sides. a landing is not required for the exterior side of the door. The floor or landing at the required exit door shall be not 35. STAIR TREADS&RISERS:IRC Section 311.5.3 The more than 1 %2"lower than the top of the threshold of the maximum riser height shall be 7 V.The greatest riser doorway. Exception: The landing at an exterior doorway height within any flight of stairs shall not exceed the shall not be more than 7%"below the top of the smallest by more than 3/8". The minimum tread depth threshold,provided the door, other than an exterior storm shall be 10". The tread depth within any flight of stairs or screen door does not swing over the landing.The shall not exceed the smallest by more than 3/8". A nosing width of each landing shall have a minimum dimension of not less than V but not more than 1 ''/4"shall be provided not less than 36"measured in the direction of travel. The on stairways with solid risers.Open risers are permitted, walking surface of landings shall not have a slope greater provided that the opening does not permit the passage of a than 1/4"per foot. 4"diameter sphere.Exception:Nosing is not required where the tread depth is at least 11". The opening 32. GUARDS:IRC Section R312.IBC Section 1607.7.1 between adjacent treads is not limited on stairs with a Porches,balconies,or raised floor surfaces located more total rise of 30"or less. than 30"above grade or a floor below shall have guards not less than 36"in height. Open sides of stairs with a 36. STAIR HEADROOM CLEARANCE:IRC R311.5.2 total rise of more than 30"above the floor or grade below All parts of the stairway shall not be less than 6'8" shall have guards not less than 34"in ht.Measured measured vertically from the sloped plane adjoining the vertically from the nosing of the treads. Open side of tread nosing or from the floor surface of the landing or guards shall be designed such that a sphere 4"in diameter platform. See exception for spiral stairways. cannot pass through. Handrail assemblies and guards shall be able to resist a single concentrated load of 200 37. USABLE SPACE UNDER STAIRS:IRC Section lbs.,applied in any direction at any point along the top, R311.2.2 Enclosed accessible space under stairs shall and have attachment devices and supporting structure to have walls,under stair surface and any soffits protected on transfer this loading to appropriate structural elements of the enclosed side with''/Z"gypsum board. the building. Intermediate rails(all those except the handrail),balusters and panel fillers shall be designed to 38. ILLUMINATION: IRC Section R303.6,R311.5.7 All withstand a horizontally applied normal load of 50 lbs.On interior and exterior stairways shall be provided with a an area equal to 1 sq.ft.,including openings and space means to illuminate the stair including landings and between rails. treads. Interior stairways shall be provided with an artificial light source located in the immediate vicinity of 33. HANDRAILS:IRC Section R311.5.6,R311.5.1 All the landing of the stairway. Exterior stairways shall be stairways with 4 or more risers shall have at least one provided with a light source located in the immediate handrail. Such handrails shall be placed not less than 34" vicinity of the top of the landing of the stairway. Lighting nor more than 38"above the nosing of the treads. controls shall be accessible at the top and bottom of each Handrails for stairways shall be continuous for the full stairway without traversing any steps. length of the flight,from a point directly above the top riser to a point directly above the lowest riser. Handrail 39. SPECIAL STAIRWAYS:IRC Section R311.5.3.2, ends shall be returned or terminate in newel posts or R311.5.8.1. Circular stairways,spiral stairways,winders safety terminals. Handrails adjacent to the wall shall have and bulkhead enclosure stairways shall comply with all a space not less than 1 1/a'between the wall and the requirements of stairways except: Winder treads shall handrail. Circular handrails shall have an outside have a minimum tread depth of 10"measured at a point diameter of at least 1 '/4"and not greater than 2". 12"from the side where the treads are narrower. Winder Handrails with a perimeter greater than 6'/4"shall provide treads shall have a minimum tread depth of 6"at any a graspable finger recess area on both sides. See handrail point. Spiral stairways are permitted,provided the option in IRC Section 311.5.6.3 for additional handgrip minimum width shall be 26 inches(660 mm)with each tread requirements. Handrails shall not project more than 4''/:" having a 71h" minimum tread depth at 12"from the on either side of the stairway. See#34,stairway width for narrower edge.All treads shall be identical,and the rise shall additional information. Refer to handout. be no more than 91h".A minimum headroom of 6 feet 6 inches shall be provided.Unless demonstrated otherwise 4 soil bearing capacity is assumed to be 1500 psf, weathering potential is determined to be moderate(IRC Table 301.2(1)). STRUCTURAL height shall be constructed in accordance with Table 40. FOUNDATION FOOTING SIZE: IRC Section R403. R404.1.1(2),R404.1.1(3)or R404.1.1(4)[reinforced Assume load bearing value of soil 1500 psf unless proven concrete]and shall have two#4 horizontal bars located in otherwise. the upper 12"of the wall. • Supporting 1 floor:minimum 6"x 12". • Supporting 2 floors:minimum 6"x 15". 43. STEPPED FOUNDATIONS: IRC Section 602.11.3. • Supporting 3 floors:minimum 8"x 23". Where stepped foundations occur,the following Spread footing projections shall be at least 2"&shall not requirements apply: 1)Where the height of a required exceed the thichness of the footing. braced wall panel that extends from the foundation to floor above varies more than 4',the braced wall panel 41. FOOTING REINFORCEMENT:IRC Section R403, shall be constructed in accordance to figure R602.11.3 R404.1.4. Plain concrete walls located in Seismic Design See attached details. 2)Where the lowest floor framing Categories D 1 and D2 shall comply with the following: 1) rests directly on a sill bolted to a foundation not less than Minimum reinforcement shall consist of one#4 horizontal 8' in length along a line of bracing,the line shall be bar located in the upper 12"of the wall. 2)Wall height considered as braced. The double plate of the cripple stud shall not exceed 8.' 3)Height of unbalanced backfill shall wall beyond the segment of footing that extends to the not exceed 4',and 4)A minimum thickness of 7'/z"is lowest framed floor shall be spliced by extending the required for plain concrete foundation walls except that a upper top plate a minimum of 4' along the foundation. minimum thickness of 6"shall be permitted for plain Anchor bolts shall be locateda maximum of 1'and 3' concrete foundation walls with a max.height of 4'6" from the step foundation. 3)Where cripple walls occur provided the minimumspecified compressive strength of between the top of the foundation and the lowest floor concrete,fc,is 4000 psi as evidenced by the framing,the bracing requirements for a story shall apply. delivery(batch)ticket for the project. As a minimum (see item#62) 4)Where only the bottom of the standard,refer to the attached handouts:Foundation foundation is stepped and the lowest floor framing rests Reinforcement Requirements. directly on a sill bolted to the foundations,the requirements of Section R602.11.1 shall apply.(see item# 42. FOUNDATION WALL SIZE:IRC Tables R404.1.1(1), 46). R404.1.1(2),R404.1.1(3),R404.1.1(4),&Section 404.1.4 See attached handouts. Plain concrete and plain 44. FOOTING DEPTH: IRC Section R403.1.4,R403.1.4.2. masonryfoundation walls located in Seismic Design all exterior footings shall be placed at least 12"below Categaories D1 and D2,as established in Table undisturbed ground. Interior footings supporting bearing R301.1(1), shall comply with the following: 1) Minimum or bracing walls and cast monolithically with a slab on reinforcement shall consist of one#4 horizontal bar. grade shall extend to a depth of less than 12"below the Located in the upper 12"of the wall, 2)Wall height shall top of slab. not exceed 8', 3)Height of unbalanced backfill shall not exceed 4'0",and 4)A minimum thickness of 7'/z"is 45. CRIPPLE WALL BRACING:IRC Definition,Sections required for plain concrete foundation walls except that a R602.10.2,R602.10.2.3,&R602.10.11.1 & minimum thickness of 6"shall be permitted for plain R602.10.11.2. A cripple wall is a framed wall from the concrete foundation walls with a maximum height of 4'6". top of the foundation to the underside of the floor framing 5)Plain masonry foundation walls shall be a minimum of of the first story above grade plane. In Seismic category 8"thick. D 1 (other than 132),cripple walls shall be braced with an amount and type of bracing as required for the wall above Vertical reinforcement for masonry stem walls shall be in accordance with Table R602.10.1 with the following tied to the horizontal reinforcement in the footings. modifications for cripple wall bracing: 1)The percent Masonry stem walls located in Seismic Design Categories bracing amount as determined from Table R602.10.1 shall D1 and D2 shall have a min.vertical reinforcement of one be increased by 15%,and 2)The wall panel spacing shall #3.bar located a max.of 4' o.c.in grouted cells. be decreased to 18' instead of 25'. In Seismic Design Category D2 Cripple walls shall be braced in accordance Foundation walls located in Seismic Design Categories with Table R602.10.1. In any Seismic Design Category, D1 and D2,as established in Table R301.2(1),supporting cripple walls are permitted to be redesignated as the first more than 4'of unbalanced backfill or exceeding 8'in story walls for purposes of determining wall bracing requirements. If the cripple walls are redesignated,the stories above the redesignated story shall be counted as 5 • the second and third stories repectively. Where interior approved point of collection so as to not create a hazard. braced wall lines occur without a continuous foundation Lots shall be graded so as to drain surface water away below,the length of parallel exterior crpple wall bracing from foundation walls. The grade away from foundation shall be 1 '/2 times the length required by Table walls shall fall.a minimum of 6 within the first 10.' R602.10.1. Where cripple walls are braced using method Exception: Where lot lines,walls,slopes or other 3 of Section R602.10.3 .(wood structural panel)cannot physical barriers prohibit 6"of fall within 10'drains or provide this additional length,the capacity of the swales shall be provided to ensure drainage away from the sheathing shall be increased by reducing the spacing of structure. Drains shall be provided around all concrete or fasteners along the perimeter of each piece of sheathing to masonry foundations that retain earth and enclose 4"o.c. Adhesive attachment of wall sheathing shall not habitable spaces located below grade. Drainage tiles, be permitted in Seismic Design Categories D 1 and D2. gravel,or crushed stone drains,perforated pipe or other approved systems or materials shall be installed at or 46. FOUNDATION ANCHORAGE: IRC Section 403.1.6, below the area to be protected and shall discharge by R602.11.1. When braced wall panels are supported gravity or mechanical means into an approved drainage directly on continuous foundations,the wall wood sill system. Gravel or crushed stone drains shall extend at plate or cold-formed steel bottom track shall be anchored least 1-foot beyond the outside edge of the footing and at to the foundation in accordance to the following: The least 6 inches above the top of the footing and be covered wood sole plates at exterior walls on monolithis slabs and with an approved filter membrane material. The top of wood sill plates shall be anchored to the foundation with open joints of drain tiles shall be protected with strips of %2"anchor bolts spaced a maximum of 6'o.c.There shall building paper,and the drainage tiles or perforated pipe be 2 bolts per plate section with one bolt located not more shall be placed on a minimum 2 inches of washed gravel than 12"or less than 7 bolt diameters(3 %:"typical)from or crushed rock at least one sieve larger than the rile joint each endof the plate section. Where Interior braced wall opening or perforation and covered with not less than 6 lines are required to be supported by continuous inches of the same material. foundations in Section R602.10.9, %2"anchor bolts shall be spaced not more than 6'o.c.and located within 12" 49. FOOTING/PIERS ON OR ADJACENT TO SLOPES: from the ends of each plate section. Anchor bolts shall be IRC Section 403.1.7. The placement of buildings and at least%2"in diameter and shall extend a minimum of 7" structures on or adjacent to slopes steeper than 1 unit into masonry or concrete. Interior bearing wall sole plates vertical in 3 units horizontal(33.3-percent slope)shall on monolithic slab foundations shall be positively conform to Sections R403.1.7.1 through R403.1.7.4. anchored with approved fasteners. A nut and washer shall Buildings below slopes shall be set a sufficient distance be tightened on each bolt to the plate using''/."x 3"x 3" from the slope to provide protection from slope drainage, plate washers. Sills and sole plates shall be protected erosion and shallow failures. Where the existing slope is against decay. Cold-formed steel framing systems shall be steeper than one unit vertical in one unit horizontal(100% fastened to the wood sill plate or anchored directly to the slope),the toe of the slope shall be assumed to be at the foundation as required in Section R505.3.1 or R603.1.1. intersection of the horizontal plane drawn from the top of Exception:Foundation anchor straps,spaced as required the foundation and a plane drawn tangent to the slope at to provide equivalent anchorage to%2"diameter anchor an angle 45 degrees to the horizontal. Where a retaining bolts. wall is constructed at the toe of the slope,the height of the slope shall be measured from the top of the wall to the top 47. DAMP-PROOF FOUNDATION WALLS:IRC Section of the slope. Footings on or adjacent to slopes shall be R406. 1 Except where required to be waterproofed by founded in material with an embedment and setback from section R406.2,foundation walls that retain earth and the slope surface to provide vertical and lateral support for enclose habitable or usable spaces located below grade the footing without detrimental settlement. Except as shall be waterproofed from the top of the footing to the provided fro in Section R403.1.7.4 and Figure finished grade. R406.2:In areas where a high water table R403.1.7.1,the following setback is deemed adequate to or severe soil-water conditions are known to exist, meet the criteria. Where the slope is steeper than one unit exterior foundation walls that retain earth and enclose vertical in one unit horizontal(100%slope),the required usable spaces located below grade shall be waterproofed setback shall be measured from an imaginery plane 45 with a membrane extending from the top of the footing to degrees to the horizontal,projected upward from the toe the finished grade. The membrane shall consist of 2-ply of the slope.Footings adjacent to slopes shall be founded hot mopped felts,55-pound roll roofing,6-mil polyvinyl in firm material with an embedment and setback sufficient chloride,6-mil polyethylene or 40-mil polymer-modified to provide vertical and lateral support for the footing asphalt. The joints in the membrane shall be lapped and without detrimental settlement. Alternate setbacks and sealed with an adhesive compatible with the clearances are permitted,subject to the approval of the waterproofing membrane. See exception for additional building official. The building official is permitted to information. require an investigation and recommendation of a 48. FOUNDATION DRAINAGE: IRC Section R401.3, qualified engineer to demonstrate that the intent of the R405. R405.1: Surface drainage shall be diverted to an code has been satisfied. Such an investigation shall include consideration of material,height of slope,slope 6 gradient,load intensity and erosion characteristics of particleboard,preservative treated wood,fire-retardant- slope material. Exception: Mason County Development treated wood,hardwood plywood,trusses and joist Regulations may specify additional requirements. hangers shall conform to the applicable standards or grading rules of the IBC and shall be identified by a grade 52. WOOD IN CONTACT WITH CONCRETE& and/or identification mark. Areas subject to decay and MASONRY:IRC Section R319#2. All wood framing where required,the use of an approved species and grade members that rest on concrete or masonry exterior of lumber,pressure treated in accordance with AWPA C1, foundation walls and are less than 8"from the exposed C2,C3,C4,C9,C15,C18,C22,C23,C24,C28,C31, ground require the use of an approved species and grade C33,P 1,.P2, and P3 or decay-resistant heartwood of of lumber specified in Section R319.1 &R319.2 and#56 redwood,black locust,or cedars. Lumber and plywood of this checklist. required to be pressure preservatively treated in . accordance with Section 319.1 shall bear the quality mark 53. COLUMNS AND POSTS:IRC Section R319.1.3, of an approved inspection agency that maintains R319.1.4&407.7. Posts,poles and columns supporting continuing supervision,testing and inspection over the permanent structures that are embedded in concrete in quality of the product and that had been approved by an direct contact with the ground or embedded in concrete accreditation body that complies with the requirements of exposed to the weather shall be approved pressure the American Lumber Standard Committee treated wood preservatively treated wood suitable for ground contact. program FASTENERS: Fasteners for pressure Wood columns shall be approved wood of natural decay preservative and fasteners for pressure-preservative and resistance or approved pressure preservatively treated fire-retardant-treated wood shall be of hot-dipped wood. Exceptions: 1)Posts or columns which are galvanized steel,stainless steel,silicon bronze or copper. exposed to the weather or located in basements or cellars, See also manufacturer specification or distributor specific supported by piers or metal pedestals projecting 1"above installation instructions or recommendations.Exception: the floor or finished grade and 6"above exposed earth, ''/Z"diameter or greater steel bolts(where required by and are separated therefrom by an approved impervious location). Sill plate need not be pressure treated if sill moisture barrier.2)Posts or columns in enclosed crawl plate installed over 30 lb.Felt or equivalent and the sill spaces or unexcavated areas located within the periphery plate is 8"or more above grade. of the building,supported by a concrete pier or metal pedestal at a height greater than 8"from the exposed 57. FLOOR FRAMING:IRC Section R502.6,502.7. The ground,are separated therefrom by an impervious ends of each joist,beam or girder shall have not less than moisture barrier. Columns shall be restrained to prevent 1-%"bearing on wood or metal and not less than 3"on lateral displacement at the bottom end. Wood columns masonry or concrete except where supported on a 1"x 4" shall not be less in nominal size than 4"x 4"or approved ribbon strip and nailed to the adjacent stud or by the use equivalent. of approved joist hangers.Joist framing from opposite sides of a beam or partition shall lap a minimum of 3"and 54. GIRDERS ENTERING MASONRY OR CONCRETE shall be nailed together with three 1 Od-face nails. A wood WALLS:IRC Section R319.1 #4. The ends of wood splice with strength equal to or greater than that provided girders entering exterior concrete or masonry walls shall by the nailed lap is permitted. Joists shall be supported be provided with a 1/2"airspace on tops,sides and ends laterally at the ends and at each intermediate support by unless an approved species and grade of lumber specified full depth solid blocking not less than 2"nominal in Sections R319.1 &R319.2 and listed in#56 of this thickness;or by attachment to a header,band,or rim joist, checklist is used. or to an adjoining stud;or shall be otherwise provided with lateral support to prevent rotation. Joists exceed a 55. POST-BEAM CONNECTIONS/FASTENING:IRC nominal 2"x 12"shall be supported laterally by solid Section R502.9,R301. Where posts and beam or girder blocking,diagonal bridging(wood or metal),or a construction is used to support floor framing,positive continuous 1"x 3"strip nailed across the bottom of joists connections shall be provided to ensure against uplift and perpendicular to joists at intervals not exceeding 8'0". lateral displacement. The construction of buildings and See Figure R502.2 for floor framing information and structures shall result in a system that provides a complete Tables 502.3.1(1),R502.3.1(2),R502.3.3(1)and load path capable of transferring all loads from their point R502.3.3(2)for allowable spans. of origin through the load resisting elements to the foundation. 58. BEARING PARTITIONS:IRC Section 502.4.Joists under parallel bearing partitions shall be of adequate size 56. MINIMUM STANDARDS&PROTECTION to support the load. Double joists,sized to adequately AGAINST DECAY:IBC 2303&IRC Sections 319.1, support the load,that are separated to permit the 319.2,&319.3. Structural lumber,end jointed lumber, installation of piping or vents shall be full depth solid pre-fabricated 1-joists,structural glue-laminated timber, blocked with lumber not less than 2"in nominal thickness wood structural panels,fiberboard sheathing(when used spaced not more than 4' o.c. Bearing partitions structurally),hardboard siding(when used structurally), perpendicular to joists shall not be offset from supporting 7 girders,walls or partitions more than the joist depth unless directions. Braced wall line sills shall be anchored to joists are of sufficient size to carry the additional load. concrete or masonry foundations in accordance with Sections R403.1.6 and R602.11. Plate washers a 61. WALL FRAMING:IRC Sections 602.3.1,602.3.2, minimum of 1/4"x 3"x 3"shall be provided between 602.3.3,602.3.4, 602.6&602.9. Utility grade studs shall foundation sill plate and the nut. Interior braced wall not be spaced more than 16"on center,or support more panels shall be fastened to floor and roof framing in than a roof and ceiling,or exceed 8'in height for exterior accordance with Table R602.3.1(1),to required and load bearing walls or 10'for interior non-bearing foundations in accordance with the following walls. The size,height,and spacing of all other wood- requirements: 1)Floor joists parallel to the top plate shall frdming studs shall be in accordance with Table R602.3.5. be toe-nailed to the top plate with at least 8d nails spaced Exception: Studs greater than 10'in height that are in a maximum of 6"o.c.2)Top plate laps shall be face- accordance with Table R602.1.3.Studs shall be placed nailed with at least 8-16d nails on each side of splice. See with their wide dimension perpendicular to the wall. Tables R602.10.1,R602.10.5 for additional wall bracing Wood stud walls shall be capped with a double top plate information. installed to provide overlapping at corners and intersections with bearing partitions. End joints shall be 63. OPENINGS IN EXTERIOR&INTERIOR WALLS offset at least 24". Plates shall be a nominal 2"in depth (HEADERS):IBC Section 2308.9.5,2308.9.6, and have a width at least equal to the width of studs. 2308.9.7&IRC Section R602.7. Headers shall be Where joists,trusses,or rafters are spaced more than 16" provided over each opening in exterior-bearing walls. o.c.and the bearing studs are spaced 24"o.c. such Headers shall be of two pieces of nominal 2-inch framing members shall bear within 5"of the studs beneath. Studs lumber set on edge as permitted in tables R502.5(l)and shall have full bearing on a nominal 2 by or larger plate or R502.5(2)and nailed together in accordance with Table sill having a width at least equal to the width of the studs. 2304.9.1 or of solid lumber of equivalent size.Exterior Cutting and notching:may not exceed 25%of the stud headers not listed in the tables shall be designed to width in bearing or exterior walls and may not exceed support the loads specified in Table R301.5. Each end of 40%of a single stud width in non-bearing partitions. all headers shall have at least 1-1/2"of bearing for the full Bored or drilled holes:diameter of the resulting hole may width.. not exceed 40%of the stud width and is no closer than 5/8"to the edge of the stud,and the hole is located in the 64. FIREBLOCKING&DRAFTSTOPPING:IRC same section as a cut or notch. Exception: 1)A stud may Sections R602.8,R502.12. FIREBLOCKING shall be be bored to a diameter not exceeding 60%of its width, installed to cut off all concealed vertical and horizontal provided that such studs located in exterior walls or draft openings and shall form an effective fire barrier bearing partitions are doubled and that not more than two between stories,between a top story and the roof space. successive studs are bored.2)Approved stud shoes may Fireblocking shall be provided in wood-frame be used when installed in accordance with the construction in the following locations: 1)In concealed manufacturer's recommendation. See Figures R602.6(l), spaces of stud walls and partitions,including furred R602.6.2(2),and R602.6.1 for additional details. Section spaces and parallel rows of studs or staggered studs as 2320.11.5 Foundation cripple walls shall be framed of follows: a)Vertically at the ceiling and floor levels.B) studs not less in size than the studding above. When Horizontally at intervals not exceeding 10 feet 2)At all exceeding 4'0"in height,such walls shall be framed of interconnections between concealed vertical and studs having the size required for an additional story. horizontal spaces such as occur at soffits,drop ceilings Cripple walls with a stud height less than 14"shall be and cove ceilings.3)In concealed spaces at stair stringers sheathed on at least one side with a wood structural panel at the top and bottom of the run. Enclosed spaces under that is fastened to both the top and bottom plates in stairs shall comply with Section R311.2.2. 4)At openings accordance with Table R602.3(l)or the cripple walls around vents,pipes and ducts at ceiling and floor level, shall be constructed of solid blocking. Cripple walls shall with an approved material to resist the free passage of be supported on continuous foundations. flame and products of combustion. 5)For the fireblocking of chimneys and fireplaces,see Section 62. WALL BRACING:IRC Section 602.10. All exterior R1001.16. 6)Fireblocking of comices of a two-family walls shall be braced in accordance to Section 602.10 and dwelling is required at the line of dwelling unit separation. 602.11. In addition,interior braced wall lines shall be Fire blocking materials shall consist of material listed in provided in accordance with Section R602.10.1.1 and Section R602.8.1. Loose-fill insulation material shall not R602.10.9. Cripple wall bracing shall be provided in be used as a fireblock unless specifically tested in the accordance R602.10.2 and 602.10.11.Braced wall lines form and manner intended. The integrity of all fireblocks shall consist of braced wall panel construction in shall be maintained. DRAFTSTOPPING:When there is accordance with Section R602.10.3 Braced wall panels usable space both above and below a concealed space of a shall begin no more than 8'0"from each end of a braced floor/ceiling assembly,draftstops shall be installed so that wall line. Braced wall lines may have offsets,out of plane the area of the concealed space does not exceed 1000 of up to 4'0"Spacing between braced wall lines shall not square feet.Draftstops shall divide the concealed space exceed 25'0"o.c.in both the longitudinal and transverse 8 into approximately equal areas. Draftstopping materials balconies,porches or similar permanent building , shall consist of materials listed in Section R502.12.1. appurtenances.Such members may include: 1)Horizontal members such as girders,joists and decking. 2)Vertical 65. EXTERIOR COVERING:IRC Section R703.provide members such as posts,poles and columns. 3)Both the building with a weather-resistant exterior wall horizontal and vertical members. Field applied treatment envelope. The exterior wall envelope shall include is not an approved method. Treatment must be applied by flashing as described in Section R703.8. Ensure proper manufacturer,see item#56 of this checklist. fastening for type used,wood siding may not be less than 70. WOOD TRUSSES:IRC Section 502.11. Wood trusses 3/8"thick. See Table R703.4. shall be designed in accordance with approved engineering practice. Engineering data and installation 66. WEATHER RESISTANT SHEATHING PAPER and specifications,including the type of roofing to be used, FLASHING:IRC Section R703.2 and R703.8.The shall be available on site at framing inspection.Roof exterior wall envelope shall be designed and constructed trusses shall be supported laterally at points of bearing by in a such a manner as to prevent the accumulation of water solid blocking to prevent rotation and lateral within the wall assembly by providing water-resistant displacement. barrier behind exterior veneer. Asphalt-saturated felt free from holes and breaks,weighing not less than 14 lbs.per 71. RAFTERS: IRC Sections 802.3,R802.8. Rafters shall 100 SF and complying with ASTM D 226 or other be framed to ridge board or to each other with a gusset approved weather resistant material shall be applied over plate as a tie. Ridge board shall be at least 1-inch studs or sheathing of all exterior walls as required by nominal thickness and not less than the cut end of the Table R703.4. Such felt or material shall be applied rafter. At all valleys or hips there shall be a valley or hip horizontally,with the upper layer lapped over the lower rafter not less than 2"nominal thickness and not less in layer not less than 2". Exception: 1)in detached depth than the cut end of the rafter. Hip and valley rafters accessory buildings.2)Under panel siding with shiplap shall be supported at the ridge by a brace to a bearing joints or battens,3)Under exterior wall finish materials as partition or be designed to carry and distribute the specific permitted in Table R703.4.4)Under paperbacked stucco load at that point. Where the roof pitch is less than three lath. Approved corrosion-resistant shall be provided in units in 12 unit horizontal(25-percent slope),structural the exterior wall envelope in such a manner as to prevent members that support rafters and ceiling joists,such as entry of water into the wall cavity or penetration of water ridge beams,hips and valleys,shall be designed as beams. to the building structural framing components. The Rafter ties shall be placed not more than 4'on center. flashing shall extend to the surface of the exterior wall Ceiling joists and rafters shall be nailed to each other in finish and shall be installed to prevent water from accordance with Tables 602.3(1)and R802.5.1(9),and the reentering the exterior wall envelope. Approved assembly shall be nailed to the top wall plate in corrosion resistant flashing shall be installed at all of the accordance with Table R602.3(1). Rafters and ceiling following locations: 1)At the top of all exterior window joists having a depth-to-thickness ratio exceeding 5 to 1 and door openings in such a manner as to be leakproof, based on nominal dimensions shall be provided with except that self-flashing windows having a continuous lap lateral support at points of bearing to prevent rotation. of not less than 1-1/8"over the sheathing material around the perimeter of the opening,including comers,do not 72. RAFTER OPENINGS:IRC Section 802.9. Openings in require flashing; 2)At the intersection of chimneys or roof and ceiling framing shall be framed with header and other masonry construction with frame or stucco walls, trimmer joists. When the header joist does not exceed 4', with projecting lips on bot sides under stucco copings. 3) the header joist may be a single member the same size as Under and at the ends of masonry,wood or metal copings the ceiling joist or rafter. Single trimmer joists may be and sills.4)Continuously above all projecting wood trim used to carry a single header joist that is located within 3' 5)Where exterior porches,decks or stairs attach to a wall of the trimmer joist bearing. When the header joist span or floor assembly of wood construction. 6)At wall and exceeds 4',the trimmer joists and the header joist shall be roof intersections.7)At built-in gutters. doubled and sufficient cross section to support the ceiling joists or rafter framing into the header. Approved hangers 68. SIDING/EARTH SEPARATION:IRC Section R319.1 shall be used for the header joist to trimmer joist #5. Wood siding,sheathing and wall framing on the connections when the header joist span exceeds 6" Tail exterior of the building used within 6"of earth shall be joists over 12"long shall be supported at the header by pressure preservatively treated wood or wood of natural framing anchors or on ledger strips not less than 2"x2." resistance to decay identified in item#56 of this checklist. 73. CEILING JOISTS LATERAL SUPPORT 69. DECKS&EXTERIOR STAIRS:IRC Section 319.1.2. BRIDGING:IRC Section R802.8,R802.8.1. Rafters Based upon climate conditions and local exposure and ceiling joists having a depth—to-thickness ratio approved naturally durable or pressure preservatively exceeding 5 to 1 based upon nominal dimensions shall be treated wood shall be used for those portions of wood provided with lateral support at points of bearing to members that form the structural supports of buildings, prevent rotation. Rafters and ceiling joists having a 9 • depth-to-thickness ratio exceeding 6 to 1 based upon protected against the entrance of rain and snow. nominal dimensions shall be supported laterally by solid Ventilating openings shall be provided with corrosion- blocking,diagonal bridging(wood or metal)or resistant wire mesh,with 1/8"minimum to ''/,"maximum continuous 1"x 3"wood strip nailed across the rafter or openings.The total net free ventilating area shall not be ceiling joists at intervals not exceeding 8'. less than 1 to150 of the area of the space ventilated, except that the total area is permitted to be reduced to 1 to 74. ROOF DRAINAGE: IRC Section R903.4. Unless roofs 300,provided at least 50%and not more than 80%of the are sloped to drain over roof edges,roof drains shall be required ventilating area is provided by ventilators located installed at each low point of the roof. Where required for in the upper portion of the space to be ventilated at least roof drainage,scuppers shall be placed level with the roof 3'above eave or cornice vents with the balance of the surface in a wall or parapet. Overflow drains shall required ventilation provided by eave or cornice vents. dischuge to an approved location and shall not be As an alternative,the net free cross-ventilation area may connected to roof drain lines. be reduced to 1 to 300 when a vapor retarder having a transmission rate not exceeding 1-perm is installed on the 75. ROOF MATERIALS:IRC Section R904&R905. Roof warm winter side of the ceiling. Where eave or cornice covering materials shall be delivered in packages bearing vents are installed,insulation shall not block the free flow the manufacturer's identifying marks and approved testing of air. A minimum of a 1"space shall be provided agency labels when required. between the insulation and the roof sheathing at the location of the vent. 76. ATTIC VENTILATION:IRC Section R806. Enclosed attics and rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space ventilating openings GENERAL 78. PREMISE IDENTIFICATION:IRC Section R321 & minimum.015"polyvinyl butyl interlayer for glass panes Mason County Standards for Fire Apparatus Access 16 sq.ft.or less in area located such that the highest point Roads. Approved numbers or addresses shall be provided of the glass is not more than 12'above a walking surface for all new buildings in such a position as to be plainly or other accessible area;for higher or larger sizes,the visible and legible from the street or road fronting the minimum interlayer thickness shall be.030". 2)Fully property.Approved numbers or addresses shall be placed tempered glass. 3)Heat-strengthened glass. 4)Wired on all new commercial or residential buildings(that glass. 5)Approved rigid plastics. Installed skylights shall require an address),at the beginning of long driveways comply with Washington State Energy Code when the address is not clearly visible from the access requirements. road,or in any other areas deemed necessary by the local fire district or Fire Marshal. They shall be placed in such 82. GYPSUM WALLBOARD:IRC Section R702.4.2& a position as to be plainly visible and legible from the R702.4.3 When gypsum is used as a base or backer for street or road fronting the property. Said numbers shall adhesive application of ceramic tile or other nonabsorbent contrast with their background. material shall conform with ASTM C630 or C1178. Water resistant gypsum backing board shall be permitted 79. APPROVED PLANS:IRC Sections 106.3.1, 106.4. to be used on ceilings where framing spacing does not When the building official issues a permit,the exceed 12"o.c. for''/z"thick or 16"o.c.for 5/8"thick construction documents shall be approved in writing or by gypsum board. Water resistant gypsum wallboard shall stamp.One set of the contraction documents so reviewed not be installed over a vapor retarder,or on ceilings in a shall be retained by the building official. The other set shower or tub compartment. All cut or exposed edges, shall be returned to the applicant,shall be kept at the site including those at wall intersections,shall be sealed as of work and shall be open to inspection by the building recommended by the manufacturer. Limitations:Water- official or hid duly authorized representative. The work resistant gypsum backing board shall not be used in the shall be installed in accotdance with the approved following locations: 1)Over a vapor retarder in a shower construction documents,and any changes made during or bathtub compartment.2)Where there will be direct construction that are not in compliance with the approved exposure to water,or in areas subject to continuos high construction documents shall be resubmitted for approval humidity. as an amended set of construction documents. 83. GYPSUM WALLBOARD FASTENING:IRC R702.3.6&Table R702.3.5,IBC 2306.5.1.4. Screws for 8 81. SKYLIGHTS:IRC Section 308.6. The following types attaching gypsum board to wood framing shall be type W of glazing may be used: 1)Laminated glass with a or Type S in accordance with ASTM C 1002 and shall 10 penetrate the wood not less than 5/8". Footnote e, Table R702.3.5:Type X gypsum wallboard for garage ceilings 86. RETAINING WALLS:IBC Section 1806.1,IRC beneath habitable rooms shall be installed perpendicular Section R105.2. Shall be designed to ensure stability to the ceiling framing and shall be fastened at 6"o.c.by against overturning;sliding,excessive foundation pressure minimum 1-7/8"6d coated nails or equivalent drywall and water uplift. Retaining walls shall be designed for a screws. safety factor of 1.5 against lateral sliding and overturning. • 3/8"minimum from edge and ends for nails or Retaining walls that are not over 4'in height measured screws. from the bottom of the footing to the top of the wall not •• Fastening(nails): 7"o.c.max.ceiling,8"walls. supporting a surcharge is exempt from permits. • Fastening(screws): 12"o.c.ceiling, 16"o.c.walls when wall framing is 16"o.c., 12"when wall framing is 24"o.c. ENERGY CODE * UNHEATED BUILING* 11 MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O. Box 186 Shelton,WA 98584 (360) 427-9670 Belfair (360) 275-4467 Elma (360) 482-5269 Plain Concrete Foundation 4'6" Wall Height (Maximum) %"x 10" anchor bolt 6'0"o.c., 2 bolts per plate, Sill plate within 12" of the end of every (R319.1) plate with 3"x 3"x 1/4" plate washers. Bolts shall extend at least 7" into concrete. (1)#4 horizontal bar in stem wall 6"min. within 12"of the top of the wall. (R404.14) Max.wall • ht.4'6" I ! #4 vertical bar 48"o.c. standard hook when a Wall thickness cold joint exists between the wall and footing minimum 6" 4,0" I maximum (( { ! Foundation backfill drain (R405) VA T (1)#4 horizontal Reinforcement minimum 3"from bottom of footing. = bar in footing � I Height is « W „ measured from top of footing,or Story 1 2 3 top of slab to top of Thickness ( " T " ) 6" 6" 8 Y2" wall. Width ( " W " ) 12" 15" 23" Backfill shall not be placed against the wall until the wall has sufficient strength and has been anchored to the foundation at all points a minimum of 4 inches where masonry veneer is used and a minimum of 6 inches elsewhere. (R404.1.7). For purposes of determining wall height the concrete wall is measured from the top of the footing to the top of the concrete wall. In basements the wall height is measured from the top of the slab to the top of the concrete wall. Surface drainage shall be diverted to an approved point of collection so as to not create a hazard. Lots shall be graded so as to drain surface water away from foundation walls. The grade away from foundation walls shall fall a minimum of 6 in. within the first 10 ft Exception: Where lot lines, walls, slopes or other physical barriers prohibit 6 in. of fall within 10 ft. drains or swales shall be provided to ensure drainage away from the structure. (R401.3) MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O.Box 186 Shelton,WA 98584 (360) 427-9670 Belfair (360) 275-4467 Elma (360) 482-5269 Plain Concrete Foundation 8'0" Wall Height (Maximum) , T"' T7TJ7?J %'x 10"anchor bolt 6'0"o.c., 2 bolts per plate, Sill plate within 12" of the end of every (R319.1) plate with 3"x 3"x 1/4"plate washers. Bolts shall extend at least 7" into concrete. (1)#4 horizontal bar in stem wall within 12"of the top of the wall. tv (R404.1.4) 6' min. #4 vertical bar 48" o.c. standard hook when a -] Plain Concrete Wall Thickness I cold joint exists between the wall and footing Minimum 7 '/2" j Maximum Foundation ion 4'0" unbalanced drain (R405) backfill _ I I T -TM (1)#4 horizontal Reinforcement minimum bar in footing 3"from bottom of footing. _ 9 i I « W Story 1 2 3 FootingThickness ( " T " ) 6" 6" 8 Y2" Footing Width ( " W " ) 12" 15" 23" Foundation Walls: See Table404.1.1(1) on reverse side R404.1.4: Seismic Design Categories D, and D2. In addition to the requirements of Table R404.1.1(1), plain concrete foundation walls located in Seismic Design Categories D, and D2, as established in Table R301.2(1)as amended by Mason County, supporting more than 4 feet of unbalanced backfill shall be constructed in accordance with Table R404.1.1(2), R404.1.1(3) or R404.1.1(4). Wall height of plain concrete foundation walls shall not exceed 8 feet and height and unbalanced backfill shall not exceed 4 feet. Table R404.1.1(1) Plain Concrete and Plain Masonry Foundation Walls Plain Concrete Minimum Nominal Plain Masonry' Minimum Wall Thickness inches Wall Thickness inches Soil ClasseSb Maximum Maximum Unbalanced SC, MH, Wall Backfill GM, GC, ML-CL & Height Height° GW, GP, SM, SM- inorganic GW, GP, SW GM, GC, SM, SC,MH, ML-CL (feet) (feet) SW & SP CL & MIL CL & SP SM-CL & MIL & Inorganic CL 5 4 6 6 6 6 solid d or 8 6 solid or 8 6 solid d or 8 6 4 6 6 6 6 solid d or 8 6 solid aor 8 6 solid or 8 7 4 6 6 6 6 solid d or 8 8 8 8 4 6 6 6 6 solid d or 8 6 solid or 8 8 (a) Mortar shall be Type M or S and masonry shall be laid in running bond. Ungrouted hollow masonry units are permitted except where otherwise indicated. (b) Soil classes are in accordance with the United Solid Classification System. Refer to Table R405.1 (c) Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where an interior concrete slab is provided,the unbalanced backfill height shall be measured from the exterior ground level to the top of the interior slab. (d) Solid grouted hollow units or sold masonry units. (e) Wall construction shall be in accordance with Table R404.1.1(2)or a design shall be provided. (f) A design is required. (g) Thickness may be 6 inches,provided minimum specified compressive strength of concrete,fc,is 4,000 psi. Mason County will require evidence of satisfactory strength such as a copy of the delivery/batch ticket. Approval of the foundation will be granted when all conditions have been satisfied and the delivery/batch ticket is submitted to the Mason County Building Department. FOUNDATION WATERPROOFING AND DAMPPROOFING (R406.1)Foundation walls that retain earth and enclose habitable or usable spaces located below grade shall be damp proofed from the top of the footing to the finished grade. Masonry walls shall have not less than 3/8" Portland cement parging applied to the exterior of the wall. The parging shall be dampproofed with bituminous coating, 3 lbs. per square yard of acrylic modified cement, 1/8" coat of surface-bonding mortar complying with ASTM C 887 or any material permitted for waterproofing in Section R406.2 (see below). Concrete walls shall be dampproofed by applying any one of the waterproofing materials listed in Section R406.2 (see below) to the exterior of the wall. Section R406.2: Concrete and masonry foundation waterproofing: In areas where a high water table or other severe soil-water conditions are known to exist, exterior foundation walls that retain earth and enclose habitable or usable spaces located below grade shall be waterproofed with a membrane extending from the top of the footing to the finished grade. The membrane shall consist of 2-ply hot-mopped felts, 55 lb. roll roofing, 6 mil polyvinyl chloride, 6 mil polyethylene or 40-mil polymer-modified asphalt. The joints in the membrane shall be lapped and sealed with an adhesive compatible with waterproofing membrane. Exception: Organic solvent based products such as hydrocarbons, chlorinated hydrocarbons, ketones and esters shall not be used for ICF walls and expanded polystyrene form material. Plastic roofing cements, acrylic coatings, latex coatings, mortars and pargings are permitted to be used to seal ICF walls. Cold setting asphalt or hot asphalt shall conform to type C of ASTM D 449. Hot asphalt shall be applied at a temperature of less than 200 degrees. Backfill shall not be placed against the wall until the wall has sufficient strength and has been anchored to the foundation at all points a minimum of 4 inches where masonry veneer is used and a minimum of 6 inches elsewhere. (R404.1.7). For purposes of determining wall height the concrete wall is measured from the top of the fcoting to the top of the concrete wall. In basements the wall height is measured from the top of the slab to the top of the concrete wall. Surface drainage shall be diverted to an approved point of collection so as to not create a hazard. Lots shall be graded so as to drain surface water away from foundation walls. The grade away from foundation walls shall fall a minimum of 6 in. within the first 10 ft Exception: Where lot lines, walls, slopes or other physical barriers prohibit 6 in. of fall within 10 ft. drains or swales shall be provided to ensure drainage away from the structure. (R401.3) MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg.III 426 W.Cedar P.O.Box 186 Shelton,WA 98584 (360) 427-9670 Belfair(360) 275-4467 Elma (360) 482-5269 Seattle (206)464-6968 Slabs-on-Ground with Nut and 1/4" x 3" x 3"Washer Turned-Down Footings DO NOT COUNTERSINK NUT&WASHER Pressure treated plate or decay resistant heartwood of redwood , black locust or cedars. See notes below. --------•w.�-.,, s- o --I 3 '/2"concrete slab o 6" Q 0 %'x 10" anchor bolt at « 1 �` 6'0"o.c. (Q \ 2 bolts minimum per Grade Level p plate section located not � more than 12"or less ° Q `� than 7 bolt diameters I o � � \ Min. ° �/ ��`� from the ends. 12" ° '�`� \ �/7 Extend 7"into concrete. below grade ° Slabs-on-ground with turned down footings shall have a minimum of one (1)#4 at the top and bottom of the footing. Footing Width: EXCEPTION: For slabs-on-ground cast Footin Drain 12"single story monolithically with a footing, g 15"two story one (1)#5 bar or two (2)#4 bars shall be located in the middle 1/3 of the footing depth. (R403.1.3.2) Protection Against Decay (IRC R319.1) Approved pressure treated material or decay-resistant heartwood of redwood, black locust, or cedars are required where: 1. Wood framing members rest on concrete or masonry at exterior foundation walls and are less than 8"from the exposed ground. 2. Sills and sleepers are located on a concrete or masonry slab that is in direct contact with the ground unless separated from such slab by an impervious moisture barrier. R-10 slab insulation shall be installed to create a thermal break between heated and unheated spaces. The insulation shall extend downward from the top of the slab to the bottom of the footing. MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O. Box 186 Shelton,WA 98584 (360) 427-9670 Belfair(360) 275-4467 Elma (360) 482-5269 Reinforced Concrete Foundation Walls Nominal Wall Thickness —Varies See Tables R404.1 .1(2), R404.1.1(3) or R404.1 .1(4) %'x 10" anchor bolt ITT 6'0"Q.c., 2 bolts per plate, Sill plate within 12"of the end of every (R319.1) plate with 3"x 3"x 1/4" plate washers. Bolts shall extend at least 7" into concrete. (2)#4 horizontal bar in stem wall located in upper 12"of the top of the (R404.1.4) Max.wall 6"min. wall. ht. 9'0" Vertical Reinforcement see Table(s) R404.1.1(2), R404.1.1(3)or R404.1.1(4) I Standard hook, Grade 60 maximum Foundation backfill — I - j drain j (R405) I _ T Reinforcement minimum ._.. (1)#4 horizontal 3"from bottom of footing. bar in footing I I as W vo Story 1 2 3 FootingThickness ( " T " ) 6" 6" 8 Y2" Footing Width ( " W " ) 12" 15" 23" Vertical reinforcement/Foundation Walls: See Tables R404.1.1(2), R404.1.1(3), R404.1.1(4) & R405.1 Backfill shall not be placed against the wall until the wall has sufficient strength and has been anchored to the foundation at all points a minimum of 4 inches where masonry veneer is used and a minimum of 6 inches elsewhere. (R404.1.7). For purposes of determining wall height the concrete wall is measured from the top of the footing to the top of the concrete wall. In basements the wall height is measured from the top of the slab to the top of the concrete wall. Surface drainage shall be diverted to an approved point of collection so as to not create a hazard. Lots shall be graded so as to drain surface water away from foundation walls. The grade away from foundation walls shall fall a minimum of 6 in. within the first 10 ft Exception:Where lot lines, walls, slopes or other physical barriers prohibit 6 in. of fall within 10 ft. drains or swales shall be provided to ensure drainage away from the structure. (R401.3) Table R404.1.1(2) Reinforced Concrete and Plain Masonrya Foundation Walls Minimum Vertical Reinforcement Size &Spacing' Maximum for 8" Nominal Wall Thickness Maximum Unbalanced Wall Height Backfill Height' Soil Classes ° (feet) (feet) GW,GP,SW&SP GM,GC,SM,SM-CL&MIL SC, MH, ML-CL&inorganic CL 5 #4 at 48"o.c. #4 at 48"o.c. #4 at 48"o.c. 6 6 #4 at 48"o.c. #4 at 40"o.c. #5 at 48"o.c. 4 #4 at 48"o.c. #4 at 48"o.c. #4 at 48"o.c. 5 #4 at 48"o.c. #4 at 48"o.c. #4 at 40"o.c. 7 6 #4 at 48"o.c. #5 at 48"o.c. #5 at 40"o.c. 7 #4 at 40"o.c. #5 at 40"o.c. #6 at 48"o.c. 5 #4 at 48"o.c. #4 at 48"o.c. #4 at 40"o.c. 6 #4 at 48"o.c. #5 at 48"o.c. #5 at 40"o.c. 8 7 #5 at 48"o.c. #6 at 48"o.c. #6 at 40"o.c. 8 #5 at 40"o.c. #6 at 40"o.c. #6 at 24"o.c. 5 #4 at 48"o.c. #4 at 48"o.c. #5 at 48"o.c. 6 #4 at 48"o.c. #5 at 48"o.c. #6 at 48"o.c. 9 7 #5 at 48"o.c. #6 at 48"o.c. #6 at 32"o.c. 8 #5 at 40"o.c. #6 at 32"o.c. #6 at 24"o.c. 9 #6 at 40"o.c. #6 at 24"o.c. #6 at 16"o.c. (a) Mortar shall be Type M or S and masonry shall be laid in running bond. (b) Alternative reinforcing bar sizes and spacing having an equivalent cross-sectional area of reinforcement per lineal foot of wall shall be permitted provided the spacing of the reinforcement does not exceed 72 inches. (c) Vertical reinforcement shall be Grade 60 minimum. The distance from the face of the soil side of the wall to the center of vertical reinforcement shall beat least 5 inches. (d) Soil classes are in accordance with the United Soil Classification System. Refer to Table R405.1. (e) Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where an interior concrete slab is provided,the unbalanced backfill height shall be measured from the exterior finish ground level to the top of the interior concrete slab. Table R404.1.1(3) Reinforced Concrete and Plain Masonrya Foundation Walls Minimum Vertical Reinforcement Size &Spacing Maximum For 12" Nominal Wall Thickness Maximum Unbalanced Wall Height Backfill Height' Soil Classes° (feet) (feet) GW,GP,SW&SP GM,GC,SM,SM-CL&MIL SC,MH, ML-CL&inorganic CL 4 #4 at 72"o.c. #4 at 72"o.c. #4 at 72"o.c. 5 #4 at 72"o.c. #4 at 72"o.c. #4 at 72"o.c. 7 6 #4 at 72"o.c. #4 at 64"o.c. #4 at 48"o.c. 7 #4 at 72"o.c. #4 at 48"o.c. #5 at 56"o.c. 5 #4 at 72"o.c. #4 at 72"o.c. #4 at 72"o.c. 6 #4 at 72"o.c. #4 at 56"o.c. #5 at 72"o.c. 8 7 #4 at 64"o.c. #5 at 64"o.c. #4 at 32"o.c. 8 #4 at 48"o.c. #4 at 32"o.c. 45 at 40"o.c. 5 #4 at 72"o.c. #4 at 72"o.c. #4 at 72"o.c. 6 #4 at 72"o.c. #4 at 56"o.c. #5 at 64"o.c. 9 7 #4 at 56"o.c. #4 at 40"o.c. #6 at 64"o.c. 8 #4 at 64"o.c. #6 at 64"o.c. #6 at 48"o.c. 9 #5 at 56"o.c. #7 at 72"o.c. #6 at 40"o.c. (a) Mortar shall be Type M or S and masonry shall be laid in running bond. (b) Alternative reinforcing bar sizes and spacing having an equivalent cross-sectional area of reinforcement per lineal foot of wall shall be permitted provided the spacing of the reinforcement does not exceed 72 inches. (c) Vertical reinforcement shall be Grade 60 minimum. The distance from the face of the soil side of the wall to the center of vertical reinforcement shall be at least 8.75 inches. (d) Soil classes are in accordance with the United Soil Classification System. Refer to Table R405.1. (e) Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where an interior concrete slab is provided,the unbalanced backfill height shall be measured from the exterior finish ground level to the top of the interior concrete slab. Table R404.1.1(4) Reinforced Concrete and Plain Masonrya Foundation Walls Minimum Vertical Reinforcement Size & Spacing Maximum For 10" Nominal Wall Thickness Maximum Unbalanced d Wall Height Backfill Heigh te Soil Classes (feet) (feet) GW,GP,SW&SP GM,GC,SM,SM-CL&ML SC, MH, ML-CL&inorganic CL 4 #4 at 56"o.c. #4 at 56"o.c. #4 at 56"o.c. 5 #4 at 56"o.c. #4 at 56"o.c. #4 at 56"o.c. 7 6 #4 at 56"o.c. #4 at 48"o.c. #4 at 40"o.c. 7 #4 at 56"o.c. #4 at 56"o.c. #5 at 40"o.c. 5 #4 at 56"o.c. #4 at 56"o.c. #4 at 48"o.c. 6 #4 at 56"o.c. #4 at 48"o.c. #5 at 56"o.c. 8 7 #4 at 48"o.c. #4 at 32"o.c. #6 at 56"o.c. 8 #5 at 56"o.c. #5 at 40"o.c. #7 at 56"o.c. 5 #4 at 56"o.c. #4 at 56"o.c. #4 at 48"o.c. 6 #4 at 56"o.c. #4 at 40"o.c. #4 at 32"o.c. 9 7 #4 at 56"o.c. #5 at 48"o.c. #6 at 48"o.c. 8 #4 at 32"o.c. #6 at 48"o.c. #4 at 16"o.c. 9 #5 at 40"o.c. #6 at 40"o.c. #7 at 40"o.c. (f) Mortar shall be Type M or S and masonry shall be laid in running bond. (g) Alternative reinforcing bar sizes and spacing having an equivalent cross-sectional area of reinforcement per lineal foot of wall shall be permitted provided the spacing of the reinforcement does not exceed 72 inches. (h) Vertical reinforcement shall be Grade 60 minimum. The distance from the face of the soil side of the wall to the center of vertical reinforcement shall be at least 6.75 inches. (i) Soil classes are in accordance with the United Soil Classification System. Refer to Table R405.1. (j) Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where an interior concrete slab is provided,the unbalanced backfill height shall be measured from the exterior finish ground level to the top of the interior concrete slab. Table R405.1 Pro erties of Soils Classified According to the Unified Soil Classification S stem Unified Soil Volume Soil Classification Frost Change Group Soil Description Drainage Heave Potential SY steeml Characteristicsa Potential Expansion GW Well-graded gravels,gravel sand mixtures,little or Good Low Low no fines. GP Poorly graded gravels or gravel sand mixtures,little Good Low Low or no fines. Group I SW Well-graded sands,gravelly sands,little or no fines. Good Low Low SP Poorly graded sands or gravelly sands,little or no Good Low Low fines. GM Silty gravels,gravel-silt mixtures. Good Medium Low SM Silty sand,sand-silt mixtures. Good Medium Low GC Clayey gravels,gravel-sand-clay mixtures. Medium Medium Low Sc Clayey sands,sand-clay mixture. Medium Medium Low Group Inorganic silts and very fine sands,rock flour,silty or II ML clayey fine sands or clayey silts with slight plasticity. Medium High Low Inorganic clays of low to medium plasticity,gravelly Medium to CL clays,sand clays,silt clays,lean clays. Medium Medium low Group CH Inorganic clays of high plasticity,fat clays Poor Medium High III MH Inorganic silts,micaceous or diamaceous fine sandy Poor High High or silty soils,elastic silts. OL Organic silts and organic silty clays of low plasticity. Poor Medium Medium Group OH Organic clays of medium to high plasticity,organic Unsatisfactory Medium High IV silts. Pt Peat and other high organic soils Unsatisfactory Medium High (a) The percolation rate for good drainage is over 4 inches per hour,medium drainage is 2 inches to 4 inches per hour,and poor drainage is less than 2 inches per hour. (b) Soils with a low potential expansion typically have a plasticity index(PI)of 0 to 15,soils with a medium potential expansion have a PI of 10 to 35 and soils with a high potential expansion have a PI greater than 20. MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg.111426 W.Cedar P.O.Box 186 Shelton,WA 98584 (360) 427-9670 Belfair(360) 275-4467 Elma (360) 482-5269 Seattle (206)464-6968 WHERE FOOTING SECTION"A"IS MORE THAN 8 FT., SPLICE PROVIDE METAL TIE 16 GA.BY 1.5 BY 4 FT.MIN.,EACH 2x SILL PLATE 2 FT.MIN. SIDE OF SPLICE W/8-16d COMMON NAILS. {�-- I2-2x PLATE O O O O O O O O O O O O O 11 11 11 11 11 11 11 11 C � C CONCRETE 1 STEPPED " FOOTING _ 1 " " 2x CRIPPLE 2 STUD WALL 1 wl FOOTING SECTION"A" For SI:1 inch=25.4 mm,1 foot=304.8 mm. l Note:Where footing Section"A"is less than 8 feet long in a 25 feet total length wall,provide bracing at cripple stud wall. t FIGURE R602.11.3 STEPPED FOUNDATION CONSTRUCTION EXTERIOR CORNER FRAMING DETAIL Figure R602.10.5 16d NAIL AT 24 IN.O.C. GYPSUM WALL BOARD INSTALLED IN ACCORDANCE WITH CHAPTER 7 8d NAIL AT 6 IN_O.C. 8d NAIL AT 12 IN.O.C.ON ALL WOOD STRUCTURAL PANEL (ALL PANEL EDGES) FRAMING MEMBERS NOT AT INSTALLED IN ACCORDANCE PANEL EDGES WITH TABLE 602.3(1) (a)OUTSIDE CORNER DETAIL GYPSUM WALL BOARD INSTALLED IN ACCORDANCE WITH CHAPTER 7(INTERIOR) WOOD STRUCTURAL PANEL INSTALLED IN ACCORDANCE 16d NAIL AT 24 IN,O.G. WITH TABLE 602.3(1) 8d NAIL AT 6 IN.O.C.ON ALL FRAMING MEMBERS AT PANEL EDGES AND 12 IN, O.C.ON ALL FRAMING MEMBERS NOT AT PANEL EDGES (b)INSIDE CORNER DETAIL i=25.4mm. FIGURE R602.10.5 EXTERIOR CORNER FRAMING Table R602.10.5 LENGTH REQUIREMENT FOR BRACED WALL PANELS IN A CONTINUOUSLY SHEATHED WALL a,b LENGTH OF BRACED WALL PANEL MAX. OPENING HT. NEXT TO THE BRACED WALL PANEL INCHES % OF WALL HEIGHT 8-foot wall 9-foot wall 10-foot wall 48 54 60 100% 32 36 40 85% 24 27 30 65% a. Linear interpolation shall be permitted. b. Full-ht. sheathed wall segments to either side of garage opening that support light frame roofs with roof covering dead dead loads of 3 psf or less shall be permitted to have a 4:1 aspect ratio. MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O. Box 186 Shelton,WA 98584 (360) 427-9670 Belfair (360) 275-4467 Elma (360) 482-5269 24" LATERAL RESTRAINT PANEL (LRP) 2'0"minimum Continuous header to edge of structure. Minimum 24" panel width Maximum 10'0" height 3/8" APA rated sheathing min. 24/0 exposure 1 Nail sheathing to header at 3" o.c. with 8 d nails 4x post or (2) 2x studs, in accordance with tie down device manufacturer specifications. Secure sheathing to all plates, headers and studs using 8d nails 3" o.c. (2) 2x plates 1/2" diameter anchor bolt, 7" embedment. (2) 2400# uplift capacity tie down devices installed in accordance to manufacturer specifications. (3) Continuous reinforced concrete foundation. C APPROVED FOR SINGLE STORY GARAGE ONLY MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O.Box 186 Shelton,WA 98584 (360) 427-9670 Belfair(360) 275-4467 Elma (360) 482-5269 ALTERNATE BRACED WALL PANEL (ABP 1800# AND 3000#) IRC R602.10.6 2'8"minimum 1800# ABP 3000# ABP Minimum 2'8" panel width Minimum 2'8" panel width Max.imum10'0" height Maximum10'0" height 3/8" APA rated sheathing one 3/8" APA rated sheathing side both sides. Secure with 8d nails Secure with 8d nails Edge: 6" o.c. Edge: 4" o.c. Field: 12" o.c. Field: 12" o.c. 1800# uplift capacity tie down 3000# uplift capacity tie devices at each end, installed down devices at each end, in accordance with the manu- installed in accordance with facturer specifications. the manufacturer specifications. 2 anchor bolts at panel quar- ter points 3 anchor bolts at one-fifth points (1) #4 reinforcement bar at the top and bottom (1) #4 reinforcement bar at the top and bottom Panels shall be supported directly on a foundation Panels shall be supported which is continuous across directly on a foundation the entire length of the which is continuous across braced wall line. the entire length of the braced wall line. USE 1800# UPLIFT CAPACITY TIE DOWNS ON SINGLE STORY OR SECOND STORY OF A TWO STORY STRUCTURE. USE 3000# UPLIFT CAPACITY TIE DOWNS ON THE FIRST STORY OF A TWO STORY STRUCTURE. MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Permit Processing/Inspections/Addressing Mason County Bldg. III 426 W.Cedar P.O. Box 186 Shelton,WA 98584 (360) 427-9670 Belfair (360) 275-4467 Elma (360) 482-5269 STANDARD 4'0" EXTERIOR OR INTERIOR BRACED WALL PANEL (BWP or IBWP) IRC R602.10.3 Exterior (BWP) Interior(IBWP) Method 3 of IRC (for other approved Typical Method 5 R602.10.3 methods see R602.10.3) Minimum 47 panel width when 1/2" Minimum 4'0"panel width gypsum board installed on 2 sides of Maximum 8'0"height the braced wall panel. (See Table R602.10.5 below for additional Minimum 8'0" panel width when 1/2" allowances) gypsum board is placed on one face 5/16"APA rated sheathing 16"o.c.framing; of the braced wall panel. or 3/8"APA rated sheathing 24"o.c.framing. Secure with 6d drywall nails 7"o.c. Secure with 6d common nails Align vertical joints over studs 6"o.c. at edges, 12"o.c. in the field, &6"o.c. at gable end walls. 1 1/2" blocking at horizontal joints. Align vertical joints over studs. Support IBWP as specified in IRC R602.10.9 1 1/2"blocking at horizontal joints. Interior braced wall lines shall be Extend sheathing to foundation sill plate. fastened to floor and roof framing in Exterior braced wall lines shall have a braced accordance to Table R602.3.1(1) and wall panel located at each end of the wall to required foundations in accordance line. Exception:When a BWP begins no with Section R602.11.1 (see more than 8'0"from the end one of the foundation details). In addition floor following is allowed: joists parallel to the top plate shall be 1) A min.24"wide panel is applied to each toe-nailed to the top plate with at least side of the bldg.comer and the (2)24" 8d nails spaced a maximum of 6" o.c. wide panels at the comer shall be Top plate laps shall be face-nailed attached in accordance with figure R602.10.5,or with at least(8) 16d nails on each side of the splice. 2) The end of each braced wall panel closest to the comer shall have an 1800#capacity tie down device fastened to the stud at the edge of the braced wall 1800#uplift capacity tie down panel closest to the comer and to the Fes_..:,:,..<: .: ; <:_ :< device. See exception#2, foundation or framing below. The tie down device shall be installed in `� a ``�`,` exterior BWP accordance with manufacturer specifications. IRC Table R602.10.5 Length Requirements For Braced Wall Panels in a Continuously Sheathed Wall I,b Length of Braced Wall Panel(inches) Max. Opening Height Next to the Braced Wall Panel 8-foot wall 9-foot wall 10-foot wall (%of wall height) 48 54 60 100% 32 36 40 85% 24 27 30 65% A. Unear interpolation shall be permitted. B. Full-height sheathed wall segments to either side of garage openings that support light frame roofs covering dead loads of 3 psf or less permitted to have 4:1 aspect ration. 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. Window Type Milgard Jeld Wen Certainteed Insulate 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" Window may require egress hinges ......... 20 IN. �CLEAR� 341/8 IN. CLEAR 41 IN. CLEAROPENE \ AREA A5L7 SQ. FT. \ 241N. \\// OPENABLE See footnote' above. CLEAR /\ AREA=5.7 SQ. FT. �� See footnote'above. MINIMUM SIZE MINIMUM SIZE WINDOW FOR 20 IN. WINDOW FOR 24 IN. CLEAR WIDTH 44 IN. CLEAR HEIGHT FLOOR EXIST.SIDING, EXIST.HALL 5HTG NOTE: EXIST.2z S7UD 0 24'MAX. RAFTER,BEAM,COL"SIZE AND TI-EIR5 CONNECTION METAL FLASHING ARE 5A5ED ON THE FOLLOWING A5aH7TIOK VERTICAL LOAD: I/2'058 ROOF SHTG W/8d ob'CG ROOF 5HTG TO LEDGER NAILING SCFVL ROOF OL=10 P5F(NO TILE ROOF) AT ALL SLPPORTED PANEL EWES 8do4'OG SNOW =25 P5F MIN.RF SLOPE PER UBG 199T AND bd 010'OG INFIELD OR LOCAL.M5DIcTION ROOFING MATERIAL WIND:EXPOSURE G,60 MPH,IH=1. MIN LEDGER SIZE\ SEISMIC:ZONE 3,SOIL TYPE=3,1=1 2X6 MIN. (0-10'DIST TO BLW) 8D eb'OG 2XIO MIN.OR 2X12'(10-I6'015T TO BLW) RILL BLOCKING \ 2X12 MIN.OR 2XI4-(I6-20'DIST TO BLW) RAFTER 51ZE5 (DF 2) MATCH WITH RAFTER SIZE BIRD MplTH AT BEARING DISTANCE TO BUILDINb / I LEDGER TO EACH WALL STIR NAILING SGHDL 0'-10' 10'-16' I6'-20' GUTTER ) \ / (3)-16d STAC ER O 10 DIST TO BLDGi) 12,OG 2 X b 2 X 9 2 X 10 FR2-SEE RAFTER 5CHDL (4)-16d STAGGER(10-I6'DIST TO 5LD6) Ib'Or, 2 X b 2 X 10 2 X 12 (5)-16d STAGGER(16-20'DIST TO BLW) �Js 24'OV 2 X b 2 X 12 2 X 14 LIP AT EA END OF RAFTERMETAL HANGER OR EQUAL SIW50N L5U26 (2X6 RAFTER)NPIPSON L55U26(2Xb RAFTER) BEAM 51ZE5 (DF#2) s14--ON L55U210(2XI01LP RAFTER)OR 2TW( SEE BEAM 5CHDL EQUAL DISTANCE TO BUIL.DINb 10'-I6, Ib'-20, GAP 5' 4 X 4 4Xb 4Xb (4X4 CO lW 6' 4 X 6 4 X 6 4 X 6 514P50N ALb(4X6 COLUIN)OR �i l' 4 X 6 4 X 8 4 X B EQUAL b' 4X6 4Xb 4X10 COLUMN HFMI PRE55URE TREATED 1 L 1 q' 4 X b 4 X 10 4 X 10 10'MAX 04(0-I0'015TTOBLW) I f� 10' 4X8 4X10 4X12 4Xb(10-I6'015T TO BLDG) 4X6(Ib-20'DI5T TO BLW) W ' BEAM BEAM 2' NOT _ SPAN— SPAN MAX Q ACCEPTABLE PETAL POST BASE(6AVANIZED) L --{ T NPIP50N LG844(04 COLUMN) I STANCE 5IW50N LCI346(4X6 COLLW OR �DISTANCE TO 8LD6. !`OOTINb 1 EQUAL W COLUMN(TYP) BEM((Tyr) 2'CLR L=yl _ 6'MIN (Typ) ACCEPTABLE EUILDIN6 f—� 5i.OR FW5H bRD L AWAY MOM BLP6 I1-6'MIN ON CCRETE FOOTING 24'X24'X24'THICK W L W 3'UR f'c=2500 P51 H/ 5TANDARD DETAIL FOR ATTACHED (�) 2-94 EA WAY TOPIBOT LAYER W=DISTANCE TO BLD6. RE5IDENTIAL CARPORT �-- 2'sQ FTC U SECTION I.G.B.O.OLYMPIC,PENINSULA CHAPTER PLAN KTS NT5 SCALE DATE DR BY JOB NO DWb NO NONE 33/w9b Mason County Building Department Deck, Stair, Landing and Guard Detail Guard installed on all decks over 30"above arade. The greatest riser and the greatest stair 4"maximum spacing Vertical Pickets at handrail tread shall not exceed the allowed between pickets. smallest by more than 3/8." Graspable handrail on all stairways with 4 or i more risers. Not less than 34"and :-F not more than 38" vertically from nose of tread or walking surface. Min.Guard Height 36" Handrail ends shall ' be returned or shall . terminate in newel) posts or safety ' terminals. I I II Ledger at wall: 10"min. Indicate ioist size/saacina Decks shall be Stair nosing not less than positively anchored 3/4"but not more than for lateral&vertical 1-1/4"on all solid risers Indicate beam loads. Toenails or unless tread depth is at 3/4" size/spacing.Provide nails subject to least 11." max. positive connection post withdrawal are not allowed.Decks shall be self supporting if • connections cannot Indicate Indicate post size,spacing l be verified during Indicate fasteners stringer size. and base connector. ' ( inspection.R502.2 Space per decking material 4"x4"x16"masonry "12 " "^ block with asphalt shim. Decks installed against manufactured homes must have beam support at this Provide 4"wood/earth clearance here, location. 6"all other areas. Concrete footing 12"below grade when deck is 30"or more above grade.See foundation info on reverse side. Typical Door with 3 Risers CONSTRUCTION MATERIALS Illuminate stairs Decay resistant woods with controls Landings are required on heartwood of redwood,cedar, located at top and each side of each black locust and pressure bottom of stairs. exterior door. preservatively treated wood Exception:A landing are all acceptable material for is not required with use in deck construction. Field two or fewer risers. applied treatment is not an ,, x3L ' " acceptable method. Fasteners for pressure preservative Landings shall not be treated woods shall be of hot- 36"min more than 1-1/2" dipped galvanized steel, lan ding• lower Than the top of stainless steel,silicon bronze `—"'�1 the threshold. or copper. Field cut ends, Min. 10"run Exception: notches and drilled holes of ----The landing shall pressure preservatively treated �-�-+ not be more than 7-3/4"lower wood shall be retreated in the than the threshold provided the field in accordance with AWPA 36"min Max.7 3/4"rise door does not swing over the landing. M4. landing fO IRC R319&R320. Handrail Details All stairways with 4 or more risers shall have at least one handrail. Such handrails shall be placed not less than 34" nor more than 38" above the nose of the treads and shall be continuous for the full length pf the flight. Handrail ends shall be returned or terminate in the newel post or safety terminals. Handrails adja- cent to the wall shall have a space not less than 1 1/2" between the wall and the handrail. Circular hand- rails shall have an outside diameter of at least 1 %" and not more than 2." Handrails with a perimeter greater than 6 1/4" shall provide a graspable finger recess on both sides. Handrails shall not project more than 4 1/2" on either side of the stairway. IRC R311 11/2 1N.MIN. P/2 1N.MIN. 11/2 1N.MIN. 11/4 IN.TO 2 IN.— 11/4 IN.TO 2 1N. 11/2 IN.MIN. 1112 IN.MIN. 11/4 IN.TO 2 IN. 31/2 IN.MAX 114 IN.TO 2 IN. /> NOT ACCEPTABLE - NOTE: Other shapes maybe acceptable If they provide an equivalent gripping surface. See third paragraph of Section 1003.3.3.6. - 25/e IN. .911011118� daub 26/a IN. 2%IN. 21/2 IN. 21/4 IN. FOUNDATION SUPPORT SYSTEMS • Decks 30" or less above grade: Minimum 12"x12" manufactured pier. • Deck 30"to 5'0" above grade: Minimum 14"x14" manufactured pier set 12" below grade. • Decks greater than 5T above grade: Minimum 18"x18"x18" poured in place footing set 12" below grade. All deck posts shall have a positive post to footing and positive post to beam connection. Deck height is measured at the lowest point within 57 beyond the walking surface of the deck. Washington State Energy Code and Ventilation & Indoor Air Quality Code GENERAL COMPLIANCE INFORMATION This attachment was designed to assist homebuilders in understanding and complying with State Energy and Ventilation Code requirements. If you have any questions regarding compliance measures, please do not hesitate to contact the Mason County Building Department-(360)427-9670 extension 294. VENTILATION-Outside the conditioned area. -C±'awlspace- 1 SQ.FT. of Net Free Area for every 150 SQ.FT. of floor area-crossvented for air flow-use a nonclosing vent. -Attic Area- I SQ.FT. of Net Free Area for every 150 SQ.FT. of ceiling area. A low to high, 50150 split is the ideal,if you experience problems achieving this "target" amount of ventilation due to a complex roof configuration talk to your Building Inspector and take the agreed upon action. -Vaulted Ceilings-To achieve the required ventilation you may need to vent block each rafter bay and use an approved ridge vent material. Again talk it over with your Building Inspector if a problem exists. -The key is to know what amount of ventilation is required for your situation. VENTILATION-Inside the conditioned area. KNOW YOUR FAN REQUIREMENTS-FAN FLOW (CFM) RATED AT .25 WG (WATER GAUGE) NOTE: Generally the CFM rating shown on the manufactures packaging indicates a test at .1 WG, this means that the flow rate(CFM)of the fan was tested with one tenth of an inch of water column against it. The code requires that the fan flow rate(CFM)achieve the required rating at .25 WG, or one quarter of an inch of water column. Wh^n the flow is tested with this higher static pressure against it,the exhaust fans capacity to move air is reduced. -Wet Rooms (all bathrooms, laundry rooms, water closets, etc..)-50 CFM at .25 WG. -Kitchen- 100 CFM at.25 WG. -Whole House Fan-This fan is sized according to the number of bedrooms in the home. See the Whole House Exhaust Fan Prescriptive Requirements (Table 3-2 V&IAQ)for sizing. -Stamped on your building plans you will find the minimum requirement for your Whole House Fan. -Whole House Fan CFM requirements are rated at .25 WG and a sone rating of 1.5 at .1 WG with both manual and automatic controls. -A Continuous Operating System may be an option to consider. This central, remotely located unit,ducted from each wet room will meet code requirements. More information is available upon request. EXHAUST FAN DUCTING-See Prescriptive Exhaust Duct Sizing (Table 3-3 V&IAQ) for specifications. -Different size fans(CFM ratings) require different duct sizes. There are also restrictions on the length, number of elbows, and how the duct run will terminate outside the structure. -Minimum duct diameter is 4". -No flex duct in nonaccessable areas (floor joists, ceiling rafters, etc...). -Insulate to R-4 when outside the conditioned area. -Dedicated terminus (mechanically fasten and seal duct to this terminal element). -Positive connection(mechanically fastened and sealed)to fan box take off or nipple. -Mechanically fasten and seal ducts at all connections/splices. FRESH AIR TO EACH HABITABLE ROOM-Ventilation&Indoor Air Quality Code -Window frame vents. -Through the wall ports. -This requirement may be satisfied by using an integrated system with your HVAC ducting. MORE INFORMATION ON THE BACK OF THIS PAGE PENETRATION SEALING-Inspected at the Framing/Plumbing/Mechanical stage. -Seal around windows and doors. -Under wall plates or where bottom plate meets subfloor. -Seal all wiring and plumbing penetrations,in the framing between conditioned and nonconditioned areas. -Seal around the Romex(electrical wire)that comes into electrical boxes. -Give special attention to plumbing cut outs for tubs, showers and sinks. -Seal around electrical boxes and fan boxes after drywall has been hung(checked at the Final Inspection). INSULATION-Know what is required in all areas of your project. -Floor-substantial contact with the underside of subfloor-twine,or support at 24" on center. -Ceiling-baffle for ventilation in attic and vaults to prevent blockage of air flow (this may also be a concern with floor insulation). -Rim Joist-not compressed, vapor retarder intact. -Be sure insulation is slashed for wiring and plumbing and cut out for electrical boxes. -Insulation is not to be compressed, this reduces its insulation capacity-cut it to fit. -Insulate(to ceiling R-Value)and weatherstrip attic hatches and.doors: a; -All water lines in nonconditioned areas-insulated 46 R-3: -Vapor retarders-kraft backed insulation is to be'face stapled,,lmly4etarders area minimam,4-tdil-perwrated paint is to be applied per manufactures instructions and empty cans are to be left'on-site for the Building'1nspector to see and mark. HVAC DUCTING AND THERMOSTATS -Mechanically fastened and sealed joints. -Insulated to R-8 when outside the conditioned area. -Programmable, ramping type thermostats are required on all heat pump systems. WINDOW U-VALUES-KNOW YOUR U-VALUE REQUIREMENTS -Changes to your window schedule must be submitted and approved prior to your performing the installation. -If necessary, U-Value Averaging must be calculated, submitted, and approved prior to the Framing/Plumbing/MechanicaUPenetration Inspection. RECESSED LIGHTING FIXTURES -Fixtures penetrating the envelope of the structure must meet one of the three requirements stamped on your building plans. -If you are installing recessed lighting fixtures between floors (heated basement and main floor living area) these fixtures need not be Type IC rated. BASEMENTS -Compliance by Prescriptive Path with a slab application? Remember R-10 perimeter until 24"below grade. -Conditioned basements must meet penetratidWit l sUlatiddj.-*apor,x4Carder, and wall cover:3requirements.i; m'. . This list of"tips" for achieving compliance-to the:-Energy kiid'=Ventilation,&,Indoor Air.Quality Codes*vVOQatentied'to be all inclusive, or used as a checklist. It's purpose is rather to serve as an informational aid in getting code requirementsem to,'buiiders to assist in making your project flow smoother by avoiding surprises and delays. Again, more information is available at the Mason County Building Department. file:WP/atndunat