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BLD2011-00588 Structural Calculations for Office 10x36 - BLD Engineering / Geo-tech Reports - 8/18/2011
4 Structural Calculations & Lateral Analysis for the 1Ox36 Office Adjacent to the Manufactured Home at 730 Alta Drive Belfair, WA 98528 for Juan Esteban PO Box 295 Belfair, WA 98528 by N.L. Olson & Associates,Inc. 2453 Bethel Avenue Port Orchard, WA 98366 360-876-2284 916 4 sI�NAL June-11 THESE PLAN ON T#4t j013 : Scope of Work: Lateral &Gravity Engineering for 10x36 office adjacent to existing home built without permit. This structure does not rely on the existing Manufactured home for vertical or lateral support. This design conforms to the 2009 International Building Code. Materials: Posts:D-F#1 Beams &stringers Reinforcing Steel: Grade 60 Concrete: fc= 2500 psi Assumed Soil Properties: 1500 psf Bearing Capacity, 100 psf/ft lateral capacity (w/ 1/3 increase for seismic loads) CONTENTS: Page 1-2 Basic Criteria/Dimensions Page 3 Lateral Loads Page 4 Typical Corner Post Page 5 Footing Analysis Page 6-7 Joist and Rafters Basic Desion Criteria Basic Wind Speed = 85 mph Seismic design category = D Site Class = D Ground Snow Load, P9 = 30 psf Importance Factor, Seismic IE = 1.0 Importance Factor, Snow Is = 1.00 Importance Factor, Wind Iw = 1.00 Dead Loads Floor= 12 psf(2 joists, 3 sheathing, 2 floor cover) Walls= 10 psf(2 studs, 2 psf GWB, 2 sheathing,2 siding) Roof= 15 psf(5 roofing, 2 rafters, 2.5 gwb) Live Loads Floor Live Load, Lf= 40 psf Roof Live Load, L,= 20 psf Snow Loads Ce= 1 for partially exposed roof in terrain C (ASCE 7-02 Table 7-2) Ct= 1.1 (ASCE 7-05 Table 7-3) Pf= 0.7CeCtlspg = 23.1 psf (ASCE 7-05 Eq 7-1) CS= 1.00 ps = Cspf= 23.1 psf Use 25 psf Deflection Limits Floor= L/ 240 Dead + Live and L/ 360 dead Roof= L/ 180 Dead + Live and L/ 240 dead Building Information Length = 36 ft Width = 10 ft Wall Height= 9 ft Bay Spacing = 8 ft 1 Basic dimensions Ir All Roof Slopes are 2:12 or 9.462 degrees 11 ft Front View 1 36 ft 2ft Side View 9ft 10ft Plan View 10ft Assumed N 36 ft 2 Wind Loads Main Force resisting System-Simplified approach Basic Wind Speed, V= 85 mph Importance Factor, IW= 1.00 Exposure Category = B Height Exposure Coefficient, k= 1.00 IBC Table 1609.6.2.1(4) End Zone distance, 2a = 6 ft psvalues shown below are based on PS= I,N ps30 where is from Table 1609.6.2.1(1) 9.61psf 9.6 psf 6.5 psf 13.8 psf 13.8 psf 8.4 psf 3.1 psf ► 5.4 psf 8.6 psf 8.6 psf 12.9 psf 12.9 psf N-S E-W Base Shear= 473 Ibs Base Shear= 1644 Ibs Overturning Uplift= 72 Ibs Overturning Uplift= 904 Ibs Seismic Design per ASCE Simplified method (12.14) Fx = F Sos W,(/R (ASCE Eq 12.14-11) F= 1.0 Ss = 150% g (2006 IBC) Fa = 1.00 (ASCE Table 11.4-1) SpS =2/3SMs= 2/3FaSs = 1.000 R= 6.0 (ASCE Table 12.2-1) Wbase = 11610 Ibs (dead load of roof) Fbase = 1935 Ibs 0.7E = 1382 Ibs Base shear due to Wind governs main lateral force resisting system Endwall Shear= 69.11 plf 3 Exterior Post Foundation Roof live load reduction factor= 1 (IBC 1607.11.2.1) • Max axial load = 800 Ibs Allowable Soil pressure= 1500 psf Minimum footing diameter= 0.824 ft Appied Moment at groundline= 822 ft-lb Applied Shear load at groundline= 411 lb Allowable lateral soil load = 266 psf/ft(100 w/ 1/3 increase & >1" movement at post) Actual Concrete Dia= 1.5 ft Minimum Post embedment= 2.96 ft(IBC Eq 18-1) Max Uplift= 226.1 Ibs Weight of concrete collar= 784 Ibs Weight of Soil plug above collar= 659.8 Ibs Total Weight= 1444 Ibs Interior Post Foundation Roof live load reduction factor= 1 (IBC 1607.11.2.1) Max axial load = 3680 Ibs Allowable Soil pressure= 1500 psf Minimum footing diameter= 1.767 ft Use 2'concrete pads 5 WOOD N o v d oo N N d ^ N oo m N _ N a, b a en a b b N N � N CIA - - - N - - - - - b `- - - d y 9� a 0 J •� q N M O N r o0 V1 N M M n Yt ap q n �O N m d o ,� d o o ,� ., d o d d r d d b a d� ob ,b d a a a d d ,b x V o° d n — ¢� E pWp 7 R cm N N of N N n N N N N N N N .na �. d M N N d = M N z 9 O ad� �0 NUJ J Q m y m u m . vOq n oQq � V vv v oN ao O O� N O x ob M a vi vi ao O d e5 e �cnQ o N zo Qa c n N O FJ Q rn R O O2 04 ¢^Q 9 W ' q leV1 N Q N` N C? 00 VI N O Y= �O C? n ••• n 0 n I T q .r 0 M n M M v N y .M1+ .M. .a. v N v d o d o o p d a o d d od', n a d d d a aol ob d a a Rn vi ae a ani a a W at * 4kWlcc a a vyi ac �e y a `IC s y a �e s vi a ' a 0 n z a m W G G c e ` gas n� w t% c'F S o a a a y rs a ii a e e e c u —� lL IL f% li u E E u b u 4 G $ x S S x H t� y y y y y y Q ❑ G Z x x ¢ y r°n 0 W CA 'A o7 �a c N (A p 2009 INTERNATIONAL BUILDING CODE 481 WOOD 1 - ♦ C q oo 'O N ... 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Ti .T.01 N y y h 2009 INTERNATIONAL BUILDING CODE° 507 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 Slabs-on-Ground with Nut and 1r;' 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. o 3 Y2'concrete slab C. 6„ S o r o ° 0 -.--- V2"x 10"anchor bolt at 6'0"o.c. a ' �, o r }o j�l 2 bolts minimum per Grade Level ! / plate section located not o \�\ more than 12"or less ° o than 7 bolt diameters o n i l �Min. d from the ends. 12" Extend 7" into concrete. below { grade o Q � 4 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 Footing Drain 12"single story monolithically with a footing, Footing Drain 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. �so N ..CO MASON COUNTY ' DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street PO Box 186, Shelton, WA 98584 1854 www.co.mason.wa.us (360)427-9670 Belfair(360)275-4467 Elma (360)482-5269 Concrete Foundation 4'6" Wall Height (Maximum) %" x 10" anchor bolt 6'0"o.c., 2 bolts per plate, within 12"of the end of every Sill plate plate with Yx Yx 1/4" plate (R319.1) washers @ all braced wall lines. Bolts shall extend lom at least 7" into concrete. (1)#4 horizontal bar in stem wall 6"min. within 12"of the top of the wall.Max.wall (R404.14) • ht.4'6" j #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 — 1 — j drain j (R405) Reinforcement minimum (1)#4 horizontal 3"from bottom of footing. bar in footing L 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 '/z" 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) 90 coU� MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street PO Box 186, Shelton, WA 98584 www.co.mason.wa.us (3601427-9670 Belfair(3601275-4467 Elma (3601482-5269 18�d Concrete Foundation 8'0" Wall Height (Maximum) With maximum 4 feet of unbalanced backfill** %"x 10"anchor bolt 6'0"o.c., 2 bolts per plate, within 12"of the end of every Sill plate plate with 3"x 3"x 1/4" plate (R319.1) washers @ all braced wall lines. Bolts shall extend at least 7" into concrete. T(wi#thin 1)#4 horizontal bar in stem wall 12"of the top of the wall. Max.wall (R404.1.4) ht.8'0" 6"min. Plain Concrete4 vertical bar 48"o.c. standard hook when a Wall Thicknesscold joint exists between the wall and footing Minimum 7'/2" Maximum ` I Foundation I 14'0" t = I I I = drain unbalanced (R405) backfill I « T „ Reinforcement minimum (1)#4 horizontal 3"from bottom of footing. _ bar In footing u W ve "Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where there is an interior slab the distance inside is measured from the top of that slab. Story 1 2 3 FootingThickness ( " T " ) 6" 6" 8 Y2" Footing Width ( " W " ) 12" 15" 23" . Foundation Walls: See Table404.1.1(5) R404.1.4: Seismic Design Categories D, and DZ. In addition to the requirements of Table R404.1.1(1), concrete foundation walls located in Seismic Design Categories D,and DZ, 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(5). Wall height of concrete foundation walls shall not have an unbalanced backfill height exceeding 4 feet unless reinforcement is provided per table R404.1.1(5)or engineered design. NOTE: In lieu of a professional soils report Mason Co.will assume that the most restrictive soil conditions exist onsite. TABLE R404.1.1(1) PLAIN MASONRY FOUNDATION WALLS NOTE: In lieu of a professional soils report Mason Co. will assume the most restrictive soil , conditions exist. Plain Masonrya Minimum Nominal Wall Thickness inches Maximum Maximum Unbalanced GW, GP, SW & SP GM, GC, SM, SM-CL & ML SC,MH, ML-CL & Inorganic Wall Backfill CL Height Height feet feet 5 4 6 solid or 8 6 solidd or 8 6 solid or 8 6 4 6 solid or 8 6 solid or 8 6 solid d or 8 7 4 6 solid or 8 8 8 8 4 6 solido 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 and is in contact with the interior surface fo the foundation wall,measurement of the unbalanced backfill height from the exterior finish ground level to the top of the interior concrete slab is permitted. (d) Solid grouted hollow units or solid masonry units. (e) Wall construction shall be in accordance with Table R404.1.1(2)or a design shall be provided. 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 damp proofed 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 damp proofed 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, 40-mil polymer-modified asphalt or 60 mil flexible polymer cement. 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 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) �C" cou, A MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street PO Box 186, Shelton, WA 98584 185 www.co.mason.wa.us (360)427-9670 Belfair(360)275-4467 Elma(360)482-5269 Concrete Foundation Walls Greater than 8' in height or Supporting more than 4' of unbalanced fill** Nominal Wall Thickness —Varies See Table R404.1.1(5) '/2" x 10"anchor bolt @ 6'0" o.c.(OR per table 404.1(2) if unbalanced fill is >4 feet), 2 bolts per plate, within 12"of the end of every plate with 3"x 3"x 1/4" plate washers @ all braced wall lines. Bolts shall extend at least 7" into concrete. Sill plate (R319.1) Max.wall (2) #4 horizontal bar in stem wall ht. 10'0" 6" min. located in upper 12" of the top of,the wall. R404.1.4 I j Vertical Reinforcement see Table R404.1.1(5), Standard hook, Grade 60 NOTE: In lieu of a professional soils report Mason Co. 10,01, j will assume the most restrictive soil conditions exist. maximum II backfill I _ j Foundation drain - (R405) •I (III — II I I — (1)#4 horizontal Reinforcement!minimum bar in footing 3"from bottom ting. I J ii W 99 "Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where there is an interior slab the distance inside is measured from the top of that slab. Story 1 2 3 Footing Thickness ( " T " ) 6" 6" 8 '/2" Footing Width ( "W" ) 12" 15" 23" Vertical reinforcement/Foundation Walls: Per Table R404.1.1(5) 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) NOTE: In lieu of a professional soils report Mason County will assume that the most restrictive soil conditions exist. ' Table R405.1 Pro erties of Soils Classified According to the Unified Soil Classification S stem Unified Soil Volume Soil Classification Frost Change Group System Soil Description Drainage Heave Potential S System Characteristicsa Potential Expansion b bol 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 SIP 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 lastici . Medium High Low Inorganic clays of low to medium plasticity,gravelly Medium to CL clays,sand clays,siltyclays,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. 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 damp proofed 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 damp proofed 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, 40-mil polymer-modified asphalt or 60 mil flexible polymer cement. 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. TABLE R404.1.1(5) CONCRETE FOUNDATION WALLS Note:In lieu of aprofessional soils report Mason County will assume that the most restrictive soil conditions exist onsite. Minimum Vertical Reinforcement Size and Spacing d.e,`.1 Soil Classes' and design lateral soil sf per foot of depth) GW,GP,SW and SP GM,GC,SM,SM-SC and ML SC,ML-CL and inorganic CL Maximu Maximum 30 45 1 60 m Wall Unbalanced Height Backfill Minimum Wall Thickness inches feet height b feet 5.5 7.5 9.5 11.5 5.5 1 7.5 9.5 11.5 5.5 7.5 9.5 11.5 4 PC I PC PC PC PC PC PC PC PC PC PC PC 5 5 PC PC PC PC PC PC PC PC PC PC PC PC 4 PC PC PC PC PC PC PC I PC PC PC PC PC 6 5 PC PC PC PC PC PC9 PC PC #4@35" PC9 PC PC 6 PC PC PC PC #5@48" PC PC PC #5@36" PC PC PC 4 PC PC PC PC PC PC PC PC PC PC PC PC 5 PC PC PC PC PC PC PC PC #5@47" PC PC PC 7 6 PC PC PC PC #5@42" PC PC PC #6@43" #5@48" PC9 PC 7 #5@46" PC PC PC #6@42" #5@46" PC9 PC #6@34" #6@48" PC PC 4 PC PC PC PC PC PC PC PC PC PC PC PC 5 PC PC PC PC #4@38" PC9 PC PC #5@43" PC PC PC 8 6 #4@37" PC PC PC #5@37" PC PC PC #6@37" #5@43" PC9 PC 7 #5@40" PC PC PC #6@37" #5@41" PC PC #6@34" #6@43" PC PC 8 #6@43" #5@47" PC9 PC #6@34" #6@43" PC PC #6@27" #6@32" #6@44" PC 4 PC PC PC PC PC PC PC PC PC PC PC PC 5 PC PC PC PC #4@35" PC9 PC PC #5@40" PC PC, PC 9 6 #4@34" PC9 PC PC #6@48" PC PC PC #6@36" #5@39" PC9 PC 7 #5@36" PC PC PC #6@34" #5@37" PC PC #6@33" #6@38" #5@37" PC9 8 #6@38" #5@41" PC9 PC #6@33" #6@38" #5@37" PC9 #6@24" #7@39" #6@39" #4@48"n 9 #6@34" #6@46" PC PC #6@26" #7@41" #6@41" PC #6@19" #7@31" #7@41" #6@39" 4 PC PC PC PC PC PC PC PC PC PC PC PC 5 PC PC PC PC #4@33" PC9 PC PC #5@38" PC PC PC 6 #5@48" PC9 PC PC #6@45" PC PC PC #6@34" #5@37" PC PC 10 7 #6@47" PC PC PC #6@34" #6@48" PC PC #6@30" #6@35" #6@48" PC9 8 #6@34" #5@38" PC PC #6@30" #7@47" #6#47" PC9 #6@22" #7@35" #7@48" #6@45"n 9 #6@34" #6@41" #4@48" PC9 #6@23" #7@37" #7@48" #4@48"n DR #6@22" #7@37" #7@47" 10 #6@28" #7@45 #6@45" PC DR #7@31" #7@40" #6@38" DR #6@22" #7@30" #7@38" For SI:1 inch=25.4 mm,1 foot=304.8 mm 1 pound per square foot=0.0479 kPa;1 pound per square foot=0.157 kPa/mm a. Soil classes are in accordance with the United Soil Classification System.Refer to Table R405.1 b. Unbalanced backfill height is the difference in height of the exterior and interior finish ground levels. Where there is an interior concrete slab,the unbalanced fill height shall be measured from the exterior finish ground level to the top of the interior concrete slab c. The size and spacing of vertical reinforcement shown in the table is based on the use of reinforcement with a minimum yield strength of 60,000 psi Vertical reinforcement with a yield strength of 40,000 psi or 50,000 psi is permitted,provided the same size bar is used and the spacing shown in the table is reduced by multiplying the spacing by 0.67 or 0.83,respectively. d. Vertical reinforcement,when required,shall be placed nearest the inside face of the wall a distance d from the outside face(soil side)of the wall. The distance d is equal to the wall thickness,t,minus 1.25 inches plus one-half the bar diameter,db(d=t-(1.25+db/2). The reinforcement shall be placed within a tolerance of 3/8 inch where d is less than or equal to 8 inches or 1/2 inch where d is greater than 8 inches. e. In lieu of the reinforcement shown,smaller reinforcing bar sizes and closer spacings resulting in an equivalent cross-sectional area of reinforcement per linear foot of wall are permitted. f. Concrete cover for reinforcement measured from the inside face of the wall shall not be less than 3/4 inch. Concrete cover for reinforcement measured from the outside face of the wall shall not be less than 1 112 inches for No.5 bars and smaller,and not less than 2 inches for larger bars. g. The minimum thickness is permitted to be reduced 2 inches,provided the minimum specified compressive strength of concrete is f'c,is 4,000 psi. h. A plain concrete wall with a minimum thickness of 11.5 inches is permitted,provided minimum specified compressive strength of concrete,f'c is 3500 psi i. Concrete shall have a specified compressive strength of not less than 2500 psi at 28 days,unless a higher strength is required by note g or h. j. "DR"means design is required in accordance with ACI 318 or ACI 332 k. "PC"means plain concrete. 'note this is not permitted with a construction joint in seismic zones D1 or D2 I. Where vertical reinforcement is required,horizontal reinforcement shall be provided in accordance with the requirements of Section R404.4.6.2 for ICF foundation walls. 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 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 SIDE 2 FT.MIN. E OF SPLICE W/8-16d COMMON NAILS. \ -1-r 2-2 x PLATE O O O O O O O O O O II O11 O 11 „ II II 11 11 �t �t C = C CONCRETE „ STEPPED FOOTING _ " 2x CRIPPLE =�t STUD WALL ,1 \\ FOOTING SECTION"A" 7 For SI: 1 inch=25.4 mm,1 foot=304.8 mm. Note:Wbere footing Section"A"is less than 8 feet long in a 25 feet total length wall,provide bracing at cripple stud wall. FIGURE R602.11.3 STEPPED FOUNDATION CONSTRUCTION �rgo� coa�rA MASON COUNTY • DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street PO Box 186, Shelton, WA 98584 Bess www.co.mason.wa.us 360)427-9670 Belfair(360)275-4467 STANDARD 4'0" EXTERIOR OR INTERIOR BRACED WALL PANEL (BWP or IBWP) IRC R602.10.3 See also item #62 in the Plan Review Checklist Exterior (BWP) Interior(IBWP) Method 3 of IRC (for other approved methods Typical Method 5 R602.10.3 see R602.10.3) Minimum 4'0"panel width when 1/2" Minimum 4'0"panel width gypsum board installed on 2 sides of the Maximum 8'0"height 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 of the braced wall panel. 5/16"APA rated sheathing 16"o.c.framing;or Secure with 6d drywall nails 7"o.c. (See 3/8"APA rated sheathing 24"o.c.framing. R702.3.5) Secure with 6d common nails Align vertical joints over studs. Horizontal 6"o.c. at edges, 12"o.c. in the field, &6"o.c. joints shall occur over,and be fastened to, at gable end walls. 1 1/2"blocking. (R602.10.7) Align vertical joints over studs. 1 112"blocking at horizontal joints. 1 1/2"blocking at horizontal joints. Support IBWP as specified in IRC Extend sheathing to foundation sill plate. R602.10.9 Exterior braced wall lines shall have a braced Braced wall connections R602.10.8: Interior wall panel located at each end of the wall line, braced wall lines shall be fastened to floor Exception:When a BWP begins no more than and roof framing in accordance to Table 8'0"from the end one of the following is R602.3 (1)and to required foundations in allowed: accordance with Section R602.11.1 (see foundation details). In addition floor joists 1) Amin.24"wide panel is applied to each parallel to the top plate shall be toe-nailed side of the bldg.comer and the (2)24" to the top plate with at least 8d nails spaced wide panels at the comer shall be a maximum of 6"o.c. Top plate laps shall attached in accordance with figure be face-nailed with at least(8) 16d nails on R602.10.1.4.1, or each side of the splice. 2) The end of each braced wall panel closest Where joists are perpendicular to the to the comer shall have an 1800#capacity braced wall lines above or below, blocking tie down device fastened to the stud at the shall be provided under and in line with the edge of the braced wall panel closest to braced wall panels. Where joists are the corner and to the foundation or parallel to braced wall lines above or below, framing below. The tie down device 7 a rim joist or other parallel framing member shall be installed in accordance with shall be provided at the wall to permit manufacturer specifications. fastening per Table R602.3(1).2 1800# uplift capacity tie down device. See exterior BWP exception #2. Spacing between braced wall lines in each story shall not exceed 25-ft on center in both the longitudinal and transverse di- rections. Exception: In one-and 2-story building two adjacent braced wall lines shall not exceed 35-ft. on center in order to accommodate an area not exceeding 900 sq. ft. in each dwelling unit. Spacing between all other braced wall lines shall not exceed 25-ft. (R602.10.1.5) MASON COUNTY �SoN caU�rp DEPARTMENT OF COMMUNITY DEVELOPMENT ! Mason County Bldg. III, 426 West Cedar Street PO Box 186, Shelton, WA 98584 - - www.co.mason.wa.us 360)427-9670 Belfair(360)275-4467 Elma(360)482-5269 1854 ALTERNATE BRACED WALL PANEL (ABP 1800# AND 3000#) IRC R602.10.3.2 2'8' or 2'10" minimum I i i 1800# ABP 3000# ABP Minimum 2'8" panel width Minimum 2'8" panel width Maximum 9'0" height Maximum10'0" height Minimum 2'10" panel width Minimum 2'10" panel width Maximum 10'0" height Maximum 10'0" height 3/8" APA rated sheathing 3/8" APA rated sheathing both one side 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 down devices at each end, installed devices at each end, installed in accordance with the in accordance with the manufacturer specifications. manufacturer specifications. 2 anchor bolts at panel quarter points 3 anchor bolts at one-fifth points (3 total) (1) #4 reinforcement bar at the top and bottom (1) #4 reinforcement bar at the top and bottom All alternate braced panels shall be supported directly on a foundation which is continuous across the entire length of the braced wall line. The foundation shall be reinforced with not less than one #4 bar top and bottom. USE 1800# UPLIFT CAPACITY TIE DOWNS ON SINGLE STORY OR SECOND STORY OF ATWO STORY STRUCTURE. USE 3000# UPLIFT CAPACITY TIE DOWNS ON THE FIRST STORY OF ATWO STORY STRUCTURE, SHEATH BOTH SIDES OF PANEL . i 9cx ' cooly MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III,426 West Cedar Street PO Box 186, Shelton, WA 98584 www.co.mason-wa.us 360)427-9670 Belfair(360)275-4467 1854 Portal Frame Panel .(PFP) ADJACENT TO A DOOR OR WINDOW OPENING (R602.10.3.3) EXTENT OF HEADER DOUBLE PORTAL FRAME(TWO BRACED WALL PANELS) EXTENT OF HEADER SINGLE PORTAL FRAME(ONE BRACED WALL PANEL) MIN.3"X 11.25 NET HEADER ' I. TYPICAL PORTAL FASTEN TOP PLATE TO HEADER ITH W TWO ROWS OF 16D SINKER NAILS AT 3.O.C.TYR 1000 LB FRAME i STRAP CONSTRUCTION I-j• \ 1000 LB STRAP OPPOSITE SHEATHING 1 FOR A PANEL SPLICE - FASTEN SHEATHING TO HEADER WITH BD COMMON OR (IF NEEDED).PANEL j GALVANIZED BOX NAILS IN 3'GRID PATT AS SHOWN AND EDGES SHALL BE ERN i1 MAX. BLOCKED,AND OCCUR HEIGHT I I,i. 3-O.C.IN ALL FRAMING (STUDS,BLOCKING,AND SILLS)TYP. I I !I WITHIN 24'OF MID- \ I' 1 p' «. HEIGHT.ONE ROW OF = MIN.WIDTH=16•FOR ONE STORY STRUCTURES TYR SHEATHING-TO- MIN.WIDTH=24'FOR USE IN THE FIRST OF TWO FRAMING NAILING IS F STORY STRUCTURES REQUIRED. �^ J. IF 2X4 BLOCKING IS t i'• 1„ MIN.2x4 FRAMING MIN. USED.THE 2X4'S MUST 3/8•MIN,THICKNESS WOOD DOUBLE BE NAILED TOGETHER STRUCTURAL PANEL SHEATHING 2X4 POST WITH 3 16D SINKERS i ;• MIN.4200 LB TIE-DOWN DEVICE(EMBEDDED INTO .„ CONCRETE AND NAILED INTO FRAMING) MIN.1000 LB .t._. TIE DOWN SEE SECTION R602.10.3.3 DEVICE Alternate braced wall panels constructed in accordance with one of the following provisions are also permitted to replace each 4-feet of braced wall panel as required by Section R602.10.3 for use adjacent to a window or door opening with a full-length header. 1. In one-story buildings,each panel shall have a length of not less than 16-inches and a height not more than 10-ft. Each panel shall be sheathed on one face with a single layer of 3/8-inch minimum thickness wood structural panel sheathing nailed with 8d common or galvanized box nails in accordance to Figure R602.10.3.3 The wood panel shall extend up over the solid sawn or glue- laminated header and shall be nailed in accordance to the figure. Use of a built-up header consisting of at least two 2 x 12's,fas- tened in accordance with Table R602.3(1)shall be permitted where approved. The header shall extend between the inside faces of the first full-length outer studs of each panel. The clear span of the header between the inner studs of each panel shall not be less than 5-ft and not more than 18-ft in length. A strap with an uplift capacity of not less than 1000 Ibs shall fasten the header to the side of the inner studs opposite the sheathing. One anchor bolt not less than 5/8'diameter shall be installed in the center of each sill plate. The studs at each end of the panel shall have a tie-down device fastened to the foundation with an uplift capacity of not less than 4200 lbs. Tie-down devices shall be an embedded strap type, installed in accordance with the manufacturer's recom- mendations. The panels shall be supported directly on a foundation which is continuous across the entire length reinforced with not less than one-#4 bar top and bottom. 2. In the first story of a 2-story,each wall panel shall be braced in accordance with item#1 above,except that each panel shall have a length of not less than 24-inches. This bracing method require fastening to the foundation and cannot be used in the upper floors of two-or three-story structures EGRESS WINDOW All sleeping rooms and basements with habitable space shall have at least one openabie 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 openabie 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. \ / CLEAR OPENABLE AREA=5.7 SO. FT. \ 24 IN. \/ OPENABLE See footnote' above. CLEAR //\\ AREA=5.7 SO. FT. \\ \ // \\ See footnote'above. MINIMUM SIZE MINIMUM SIZE WINDOW FOR 20 IN. WINDOW FOR 24 IN. CLEAR WIDTH 44 IN. CLEAR HEIGHT FLOOR MASON COUNTY CARPORT/COVERED DECK DETAIL IDI EXIST,WALL SHT6 NOTE, EMST.2x STUD s 24'MAX. RAFTER,BEAM,COL"SIZE AND THEIRS CONNECTION ARE BASED ON THE FOLLOWING A55Uh>PTION. METAL FLASHING VERTICAL LOAD: I/2'OSB ROOF SHT6 YU i9d 06'OG ROOF SHT6 TO LEDGER NAILIN6 SCHOL ROOF OL 10 P5F DNO TILT:ROOF) AT ALL SUPPORTEO PANEL E06E5 104'0C SNOW '25 P5F ROOF ASSEMBLY AND 8d 010'0C INFIELD per IRC/IBC requirements ROOFING MATERIAL MIN.LED6ER 51ZE SNOW LOADS>25#REQUIRE ALTERNATE RAFTER AND BEAM SIZING APPROPRIATE FOR LOADING. 2X8 MIN, (0-10'DI5T TO BLD6) 8D 06'OG 2X10 MIN.OR 2XI2-(10-16'DI5T TO ax*) 2XI2 MIN.OR 2XI41 M-20'DI5T TO BLD6) RAFTER SIZES (DF#2) FULL BLOCKING I MATCH WITH RAFTER SIZE BIRD MOUTH AT BEARING \� LEDGER TO EACH WALL STIR NAILING 5CHDl DISTANCE TO BUILDIN6 / (STUD SPACING SHALL BE 24'OG MAX) 0'-IO' IO'16' Ib'-20' &UTTER VP) \�� (3)-Ibd STACx5ER(0-10'DI5T TO BLD6) � 12'Cv 2 X 6 2 X 8 2 X 10 (4)-16d STA66ER 00-Ib'DI5T TO BLD6) `� Ib'OG 2 X b 2 X 10 2 X 12 RAFTER DF#2-SEE RAFTER 5CHDL (5)-16d STA66ER(I6-20'DIST TO BLD6) �I 124-06 2 X 8 2 X 12 2 X 14 FETAL HANGER HJRRIGAIE CLIP AT EA,END OF RAFTER SIMPSON L5U26 (2X6 RAFTER) BEAM SIZES (DF#2) SIMF"HI OR EQUAL SIMPSON L55U26(2X8 RAFER)T SIMPSON LSSU210(2XIORP RAFTER)OR DISTANCE TO BUILDI115 2T1AX BEAM DFI12-SEE BEAM SGHDL EXAL O'-10' I!TO I6'20' METAL POST GAP 5' 4 X 4 4X6 4X6 SIMPSON AC4(4X4 COLUMN) 6' 4 X 6 4 X 6 4 X 6 51MP50N A66 14Xb COLLW OR 95 7' 4 X 6 4 X 8 4 X 8 EQUAL 8' 4X6 4X8 4X10 1 L ` 114X8 4X10 4X10 COLUMN HF#I PRE55URE TREATED I 10' 1 4 X 8 1 4 X 10 1 4 X 12 IO,MAX 04(0-10'D15T TO BLDS) 7 4X6 00-16'DI5T TO BLD6) 4X6(16-20'DI5T TO BLOW W BEAM BEAM 2. FFF L<W 5FAN—T SPAN —IMAX 1 . tl4I AGC�PTABLE METAL P05T BASE(6AVANIZEV) L T SIMPSON LCB44(40 COLLW DISTANCE SIMPSON LCB4b(4X6 COLUMN)OR TD 5LD6. FOOTING t BEAM ) EQUAL W I LOLI1I91(rrPl 1 2'GLR b'MINH. �) BIIILDIN6 ,. �-- L —+ SLOPE FIN15N 6RD I—r AYNAY FROM BLD6 CONCRETE FOOTING W L>W 1'-6'MIN 24X24X24'THICK ACCEPTABLE Construction is limited to the 3'GLR f -2500 P51 W/ (Np) 2-04 EA WAY TOP11BOT LAYER W-DISTANCE TO 1506, specifications of +— 2'50 FTG 3'GLR This diagram including maximum mP) SECTION PLAN 10' post height maximum 10' beam N,T5 N.TS span (post spacing). Mason County Building Department Residential Deck, Stair, Landing and Guard Detail Guard installed on all decks over 30"above arade. The greatest riser and the greatest stair Spaced so a 4"sphere Vertical Pickets at handrail tread shall not exceed the cannot pass through. smallest by more than M." Graspable handrail on all stairways with 4 or ! more risers. Not less than 34"and not more than 38" vertically from nose of tread or walking surface. Mnimum Guard Height 7. 36" Handrail ends shall t be returned or shall terminate in newell posts or safety terminals. 1 Indicate foist size/soacina Ledger at wall: 10"min. Decks shall be Stair nosing not less than positively anchored 3/4"but not more than i for lateral 8 vertical 1-1/4"on all solid risers Indicate beam loads.See Mason 7 s/a' size/spacing.Provide 1 County deck ledger unless tread depth is at max positive connection post ► 1 attachment detail. least 11." Decks shall be self I (' supporting if connections cannot Indicate Indicate post size,spacing !. be verified during Indicate fasteners stringer size. and base connector. I inspection.R502.2 Space per • decking material I ~ Triangular opening formed by 4"x4"x16"masonry 12' riser/tread/guard are permit- block with asphalt min - led to be open so that a 6" shim. Decks installed against manufactured sphere cannot pass through. 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 greater [than 30"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 6`8" is not required with use in deck construction. Field rGRail 11 two or fewer risers. applied treatment is not an rMin "mac acceptable method. Fasteners for pressure preservative Landings shall not be treated woods shall be of hot- n more than top of dipped galvanized steel,lower Than the top of stainless steel,silicon bronze 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 7-314"lower wood shall be retreated in the than the threshold provided the field in accordance with AWPA 36"min I Max.7 3/4"rise M4• landing door does not swing over the landing. IRC R319 8:R320. Handrail Details I%IN NK ,hIN.&M kx►vi All stairways with 4 or more risers shall I,,,RLT02W. 014W.TO2W. have at least one handrail. Such handrails 1'f'KMW. 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 termi- nals, Handrails adjacent to the wall shall ,,IN.TO21K have a space not less than 1 1/" between the wall and the handrail. Circular hand- rails shall have an outside diameter of at least 1 %" and not more than 2." Handrails MUTE:�.,wpe.�,ee.cry,1.wue„p",;a,.nepwulao�Nre>w"ar.- NOT�K`� with a perimeter greater than 6 %" shall Se.WN puaywpl d 5"clian IOOiJ16. provide a graspable finger recess on both sides. Handrails shall not project more than 4'/2" on either side of the stairway. 2a,IN- K 251.w- "h W. 211,W. 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 5'0"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 5'0" beyond the walking surface of the deck. DECK PLAN EXAMPLE ONLY APPROVED JOIST HANGERS EXISTING BUILDING *BEARING REQ'D FOR MFG.HOME MAMMTAIS � N .-1 ES IBE I & PA NG I J 11 n II 1 11 1 'D POSTS &PIER EK OCK SIZES & SPA G t—*DESCRIBE R JOIST *DE CRIBE BEAM SIZE&SPACING 30IDII MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street - PO Box 186, Shelton, WA 98584 N J www.co.masonma.us (360)427-9670 Belfair(360)275-4467 Elma(360)482-5269 Deck Ledger Attachment Details & Specifications Please see Mason County Checklist item #56 and #69 for additional wood and fastener requirements Fastener spacing for solid sawn deck ledger to an existing band (rim) joist. (Deck Live Load = 40 psf& Dead Load = 10 psf) • Joist Span 6'-0" and 6'-1" to 8'-1" to 10'-I" to 12'-1" to 14'-1" to 16'-1" to Less 8'-0" 10'-0" 12'-0" 14'-0" 16'-0" 18 Ally Connection Details On-Center Spacing of Fasteners 1/2" diameter lag screw with 15/32" 30 ! 23 18 15 13 11 10 maximum sheathing 1/2" diameter bolt with 15/32" 36 36 34 29 24 21 19 maximum sheathing 1/2" diameter bolt with 15/32" 36 36 29 24 21 18 16 maximum sheathing and 1/2" stacked washers • Lag screw tips shall extend beyond the inside face of the band/rim joist • Maximum gap between band/rim joist and ledger shall be 1/2"with spacer(s) • Flashing shall be installed to prevent water intrusion at structural attachment • Deck Ledger shall be minimum 2x8 pressure preservative treated No. 2 grade lumber • Lag screws and bolts shall be staggered per diagram below co typical spacing c'1 .0 i_ Q o Q o 2" stagger fasteners tyP1cal © O o in 2 rows lag screw, thru-bolt, anchor with washer lag screws must be hot- dipped galvanized or :o stainless steel only " fV screw must penetrate 1-1/2-shank length must extend through beyond band board g and existing b a minimum of 112" (no threads) board Please see typical diagrams on reverse for construction details. Typical Construction Details Deck Ledger shall be 2x pressure preservative treated No. 2 grade lumber(2 x 8 minimum) Ledger shall be equal to (or greater than)joist sizes larger than 2 x 8 nominal Sheathing '/2' hot-dipped \ Housewrap or galvanized bolts _ i'" „�— building paper and washers, staggered t—� -'`�=-- Flashing membrane Washers create 1/2- drainage �- space PT deck joist PT deck ledger Band joist exterior sheathingremove siding at ledger prior to installation continuous flashing existing 2x band board with drip edge or 1-1/4" min_ manuf. solid rim joist 1/2" dia. lag screw or thru-bolt floor joist - . deck joist s 2x ledger board embed anchors 2-1/2" min. d • .a deck joist d concrete or solid masonry wall _ 1/2' dia. expansion • anchors d 2x ledger board MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT ADDRESS POSTING REQUIREMENTS ADDRESSES ASSIGNED IN MASON COUNTY ARE REQUIRED TO BE POSTED WITHIN 30 DAYS OF THEIR ASSIGNMENT. FOR QUESTIONS PLEASE CONTACT THE DEPARTMENT AT 360-427-9670 EXT 291 At such time that the Department of Community Development assigns an address, the property owner shall place, within thirty30 da ys s the assigned mil point( ) y g e p t number, in contrasting reflective material, at the driveway entrance so that it is clearly visible from the roadway in both directions. When there is a long shared driveway, easement or any situation where there could be confusion in finding an entrance, mile point numbers shall be posted together at the main access point, and at each turn and/or driveway entrance, in contrasting reflective material, to provide direction to the parcel. Recreational properties, parcels without structures and any other parcels with an assigned address shall affix said address with 30 days of assignment as described herein. Posting is required to the front of any structure within 30 days of its erection. Mile point number and or alphabetic unit designation posting shall contrast with any background, should be clearly visible on the front of the structure and shall meet the setback requirements as described below. Residential address numbers shall be Arabic numerals. Alphabetic designations will be of the English Alphabet. Single Family residence designations shall be a minimum of 4 inches high with a minimum stroke width of 1/2 inch. Water front properties with fire boat access shall post mile point numbers in a minimum of 6 inches with a 3/4 inch stroke, the mile point number, in contrasting reflective material, on the front of a dock or post visible from the water. New and existing buildings shall have approved address numbers and or letters, building numbers and or letters or approved building identification posted in conformance with the addressing ordinance. Multi family residential, small commercial or small business designations: 50 feet or less setback shall post a 6 inch minimum with a 3/4 inch stroke. 50 feet or more setback shall post a 12 inch minimum with a 1 1/2 inch stroke. Designating unit on a building will be no less than 4 inches in height. Designating unit on a door will be no less than 2 inches in height. Large commercial or industrial structures designations: 100 foot setback or less shall post 18 inch minimum with 2 inch stroke. 100 foot setback or greater shall post 24 inch minimum with 3 inch stroke. MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT GUIDELINES FOR PRIVATE ROAD SIGNING ALL PRIVATE ROADWAYS IN MASON COUNTY MUST BE PRE-APPROVED BY THE MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT. IF YOU WISH TO REQUEST YOUR EASEMENT BE NAMED PLEASE CONTACT THE DEPARTMENT AT 360-427-9670 EXT 291 • Private roads not maintained by Mason County shall be signed in conformance with the addressing ordinance within Thirty (30) days of naming the private roadway. • Parcel owners using the private roadway shall be responsible for the cost and maintenance of private road signs. • Streets and roads shall be identified with approved signs. • Temporary signs shall be installed at each street intersection when development of new roadways allows passage by vehicles. • Signs shall be a minimum of 24 inches in length or a maximum of 60 inches to accommodate varying name lengths. • Height shall be a minimum of 8 inches with 5-inch letters describing the geographical indicator first then the road name ending in the road type indicator as described in the State Sign Fabrication Manual M55.05. • For example: • E Island Lake Dr • SE Brewer Rd • W Countryside Ct • Signs shall be of green permanent waterproof materials with white reflective lettering. All sign supports shall be of a breakaway design, having the ability to break away if struck by a vehicle. • The sign shall be a minimum height of seven feet from the bottom of the sign to • surface of the ground, for visibility. ` • The sign shall be located as to not interfere with site distance or road maintenance operations. • Private road signing, placement and maintenance shall be the responsibility of the property owner(s). Washington State Energy Code and Ventilation Information GENERAL COMPLIANCE BOORMATION ' This attachment was designed to assist homebuilders with the Washington State Energy Code(WSEC)requirements.If you have any questions regarding compliance measures,please do not hesitate to contact the Mason County Building Department-(360)427-9670 extension 352. VENTILATION—Outside the conditioned area. Crawlspace—1 SQ.FT.of Net Free Area for every 300 SQ.FT.of floor area.-cross-vented for air flow-use a non-closing vent. -Attic area—I SQ.FT.of Net Free Area for every 300 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 GUAGE)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 the one tenth of an inch of water column against it.The code requires that the fan flow rate(CFM)achieves the required rating at.25 WG,or one quarter of an inch of water column.When 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 fans—This fan is sized according to the number of bedrooms in the home. - The approved building plans will have a label specifying 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 - 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". - Flex duct is not allowed in non-accessible areas(floor joists,ceiling rafters,etc...). Insulate exhaust ducts to R-4 when outside the conditional area. - Dedicated terminus required for each duct.(mechanically fasten and seal duct to this terminal element). - Positive connection(mechanically fastened and sealed)to fan box off or nipple. - Mechanically fasten and seal ducts at all connections/splices with welds,gaskets,mastics(adhesives),or mastic-plus-embedded-fabric systems installed in accordance with manufacturer's installation instructions.Other tapes may be approved when installed in accordance with the listing or when ducts are located entirely within the conditioned space of the building. See WSEC Section 503.10.1 for more information. FRESH AIR TO EAC H HABITABLE ROOM— - Window frame vents,through the wall ports,or using an integrated system with your HVAC ducting may satisfy this requirement. PENETRATION SEALING-Inspected during the"Framing/Plumbing/Mechanical inspection." - Seal around windows and doors. Expanding foams may affect the frames of windows and doors and are not approved as a sealant around doors and windows. - Under wall plates or where bottom plate meets subfloor. - Seal all wiring and plumbing penetrations in the framing between conditioned and non-conditioned areas(typically ceiling,walls,and floors). Seal around the electrical wire(Romax)where it enters the electrical boxes. - Be sure to seal plumbing cutouts for tubs,showers and sinks. Seal around electrical boxes and fans after drywall has been hung(checked at the Final Inspection). INSULATION—Know what i required all areas of the project. s eq ed in a e p � Floor—substantial contact with the underside of subfloor—twine,or support at 24"on center. Ceiling—in stall insulation baffles to maintain ventilation in attics and vaults(this may also be a concern with the floor insulation). Rim joist—not compressed,be sure the vapor retarder intact. - Be sure insulation is slashed for wiring and plumbing and cut out for electrical boxes. MORE INFORMATION ON THE BACK OF THIS PAGE Insulation is not to be compressed,this reduces its insulation capacity—cut insulation to fit around boxes,wiring,etc. Insulate attic access and doors(to ceiling R-Value)and weatherstrip. - Insulate all water lines.in non-conditioned to R-3. Vapor retarders and kraft back insulation is to be face stapled to framing members. Poly vapor retarders shall have a minimum 4 mil perm rating. Approved vapor retarder paint may be used provided it is applied per manufacturer instructions and empty cans are left on- site for the building Inspector to see. 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. - All low-pressure supply and return duct transverse joints,and enclosed stud bays or joist cavities/space used to transport air,shall be securely fastened and sealed with welds,gaskets,mastics(adhesive),or mastic-plus-embedded-fabric systems installed in accordance with the manufacturer's installation instructions. Exception: 1)ducts entirely located within the conditioned space.2)UL181A(rigid fibrous glass ducts)may be used when installed in accordance with the listing.3)UL181B((flexible air ducts)may be used when installed in accordance with the listing.4)Where enclosed stud bays or joist cavities/spaces are used to transport air sealing may be accomplished using drywall,drywall tape plus joint compound.5)Tapes installed in accordance with the manufacturer's installation instructions,provided detailed information specific to application on ducts,including approved duct materials and required duct surface cleaning. WINDOW U-VALUES-KNOW YOUR U-VALUE REQUIREMENTS Changes to the approved building plans will require approval prior to making changes. Typically windows and doors in have u- factor of.30 or less as evidenced by the NFRC sticker attached to the windows unless WSEC compliance was approved using other than prescriptive option III. If u-factors exceed.30,U-factor averaging will be required and must be calculated,submitted to the building dept:for approval,and approved prior installation. RECESSED LIGHTING FIXTURES - Fixtures penetrating the envelope of the structure(recessed lighting fixtures)must meet one of the following requirements: 1)Type IC rated,manufactured with no penetrations between the inside of the recessed fixture and ceiling cavity and sealed or gasketed to prevent air leakage into the conditioned space. 2)Type IC rated,installed inside a sealed box constructed from a min.%"thick gypsum wall board,or constructed.from a preformed polymeric vapor retarder,or other airtight assembly manufactured for this purpose.3)Type IC rated,certified under ASTM E283 to have no more than 2.0-cfm air movement from conditioned space to the ceiling cavity. The lighting fixture shall be tested at 75 Pascal's or 1.57 lbs./S.F.pressure difference and have a label attached,showing compliance. 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 air-sealing,insulation,vapor retarder,and wall cover requirements. ****NEW IN 2011 ****DUCT TESTING and PERMANENT CERTIFICATE/AIR LEAKAGE TEST DUCT TIGHTNESS TESTING shall be conducted by person(s)trained to perform such testing. A signed affidavit documenting test results in accordance to WSEC Section 503.10.3 shall be provided to the Mason County Building Department prior to the final occupancy inspection. Affidavit forms are available on at the WSU-Energy Program website titles,"Duct Leakage Affidavif'or"Duct Leakage Testing Results(Existing Construction)."Duct tightness testing is not required if the air handler and all ducts are located within the heated space. Also added in 2011 is the requirement for a PERMANENT CERTIFICATE AND AIR LEAKAGE'TEST completed by the builder or registered design professional. The permanent certificate shall be posted within three feet of the electrical distribution panel and shall list the predominant R-values of insulation installed in or on ceiling/roof,walls, foundation(slab,basement wall,crawlspace wall and/or floor),and ducts outside the conditioned spaces; U-factors for fenestration;and the solar heat gain coefficient(SHGC)of fenestration.The certificate shall list the type and efficiency of heating,cooling,and service water heating equipment,duct leakage rates including test conditions as specified in WSEC Section 503.10.2,and air leakage results if a blower door test was conducted.Air leakage testing is not required for additions less than 750 square feet. Compliance certificates are available online at the WSU Energy program website titled," - WSEC 2004 Certificate"and are available in'/.or'/z sheets. The Mason County Permit Center will also have some available. This list of"tips"for achieving compliance to the WSEC and ventilation code requirements is not intended to be all inclusive,or used as a checklist.Its purpose is rather to serve as an informational aid in getting code requirements out to builders to assist in making your project flow smoother by avoiding surprises and delays. os co MASON COUNTY r s` DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street . - — PO Box 186, Shelton, WA 98584 1854 www.co.masonma.us 360)427-9670 Belfair(360)275-4467 STANDARDS FOR INSTALLTION OF PROPANE TANKS Intake to direct- vent appliance Window air conditioner ° 10 ft(min) 8 (source of ignition) Central A/C 0 0 (Note 1) (min) 10 ft(min)(Note 1) e." compressor 10 ft(min Uhy��r (Note 2) ` (source of ignition) (Note 1) arWQ2 r 125 �2 ` 3/yyc �0ft) >p ,o'e min) / SO'?o min °. .o,..• (Note 2) 25 ft Crawl space opening, Nearest line of adjoining W� _ (min) window,or exhaust fan property that can be / (Note 3) 10 ft(min) built upon 25 ft(min) / I / For SI units,1 It=0.3048 m (Note 3) Note 1:Regardless of its size,any ASME container filled on Note 2:Refer to 6.3.9, site must be located so that the filling connection and fixed maximum liquid level gauge are at least 10 ft from any Note 3:This distance may be reduced to no less than 10 ft for a external source of ignition(e.g.,open flame,window A/C, single container of 1200 gal(4.5 m3)water capacity or less, compressor),intake to direct-vented gas appliance,or intake provided such container is at least 25 ft from any other LP-Gas to a mechanical ventilation system. container of more than 125 gal(0.5 m3)water capacity.Refer Refer to 6.3.9. to 6.3.3. FIGURE I.J.(b) Aboveground ASME Containers. (This figure for illustrative purposes only;code shall govern-) NFPA 58 Table 6.3.1 Separation distanced between containers,important buildings and other properties. Minimum Distances Water Capacity Mounded or Underground b per Container a Containers Aboveground Containers Between Containers Gallons Feet Feet Feet <125 10 0° 0 r 125—250 10 10 0 251—500 10 10 3 501 —2000 10 25 3 2001 —30,000 50 50 5 Footnote a: Distances for mounded or underground tanks shall be measured from the pressure relief valve and the filling connection.No part of an underground ASME container shall be less than 10-ft from a building or property line that can be built upon. (NFPA58 6.3.4) Footnote b:The horizontal distance between the portion of a building that overhangs out of the building wall and an ASME container of 125 gallons or more shall comply with the following: (1) The horizontal distance shall be measured from a point determined by projecting the outside edge of the overhanging structure vertically downward to grade or other level upon which the container is installed. (2) This horizontal distance shall be at least 50%of the separation distance required in Table 6.3.1. (3) This requirement shall apply only when the overhang extends more than 5-ft. from the building. (4) This requirement shall not apply when the overhanging structure is 50-ft or more than the relief valve discharge outlet. (5) This requirement shall not apply to ASME containers,2002 to 30,000 gallons,where the container distance from a building is in accordance with NFPA 58 6.24.2. Footnote c: Access at the ends or sides of individual underground containers 125 gallons or more shall be provided in multi- container installations to facilitate working with cranes or hoists. (NFPA 58 6.3.11) Footnote d: The distance measured horizontally from the point of discharge of a container pressure relief valve to any building opening below the level of such discharge shall be in accordance with Table 6.3.9. and figure I.1(b). (NFPA 58 6.3.9) Footnote e: Cylinders installed alongside of buildings shall be positioned so that the discharge from the cylinder pressure relief device is located as follows: (1)At least 3-ft horizontally away from any building opening that is below the level of such discharge.(2)At least 5-ft in any direction away from any exterior source of ignition,opening to direct-vent(sealed combustion system)appliances,or mechanical ventilation air intakes. Cylinders shall not be located and installed underneath an building unless the space is open to the atmosphere for 50%or its perimeter or more. The distance measured horizontally from any point of discharge of a container pressure relief valve to any building opening below the level of such discharge shall be in accordance with Table 6.3.9 and Figure I.1(b). (NFPA 58 6.3.7,6.3.8,and 6.3.9) ADDITIONAL REQUIREMENTS: 1. A building permit shall be required for the installation of any sized tank serving a fixed appliance within any structure. 2. All LP tanks shall be installed in accordance to NFPA 58 and the International Fire Code. 3. Weeds,grass,brush,trash and other combustible material shall be kept not less than 10-feet from LP tanks in any direction. 4. When exposed to probable vehicular damage due to proximity to driveways,parking areas, or alleys, LP containers,regulators and piping shall be protected. Intake to J direct vnMl e Window air appliance conditioner(source .of ignition) Central NC a Q +mid `^3[t IIG�II - 1Oft min)(Note 2) compressor (fdote i) (min) ►` ` , (source of Ignition) `(Note �3R Cylinders not filled on elle 'S- (Flute 3) Cylinder filled on site from bulk truck Crawl space opening, windows,or exhaust fan For St units,1 h=0.3048 m Note 1:5-ft minimum from relict;valve in any direction away Note 2:It the cylinder is filled on site from a bulk truck,the from any exterior source of ignition,openings into direct• titling connection and vent valve must be at least 10 If from vent appliances,or mechanical ventilation air Intakes. any exterior source of ignition,openings into direct-vent Refer to 6.3.7. appliances,or mechanical ventilation air intakes. Refer to 6.3.g. Note 3:Refer to 63.7. FIGURE I.1(a) C�4i dens.(This figure for illustrative Purposes only;code shall goveru.) MASON COUNTY FIRE MARSHAL II(DB � Mason County Bldg. III 426 W Cedar St PO BOX 186 Shelton,WA 98584 (360)427-9670 Ext.273 CODE ENFORCEMENT FIRE INSPECTIONS FIRE INVESTIGATION PUBLIC EDUCATION TITLE 14 MASON COUNTY BUILDING CODE CHAPTER 14.17 Standards for Fire Apparatus Access Roads Effective July 1,2007 14.17.010—This Ordinance shall not apply to roads, driveways, or other means of access to existing structures or within subdivisions of land developed under a permit from Mason County issued prior to the adoption of this Ordinance. 14.17.020 - Plans for fire apparatus access roads shall be submitted to the fire marshal for review and approval prior to construction. 14.17.030 - When required by the Fire Marshal; approved signs or other approved notices shall be provided and maintained for fire apparatus access roads to identify such roads and prohibit the obstruction thereof. 14.17.040 - Roadways shall be constructed/designed with an all weather driving surface (gravel, crushed rock, concrete or asphalt) and the ability to support the imposed load requirements of fire apparatus. 14.17.050 -Fire apparatus access roads shall extend to within 150' of all portions of the exterior wall of any residential or commercial structure; and within 50' of at least 25%of the exterior wall of any commercial structure. 14.17.060 -A fire apparatus access road shall be a minimum unobstructed width of 20' for commercial structures, or 4 or more parcels or building sites. The access road may be reduced to 12' of unobstructed width with a minimum 10' wide driving surface for 1-3 parcels or building sites on approval of the Fire Marshal. 14.17.070 -A fire apparatus access road shall have an unobstructed vertical clearance of not less than 12' the full width of the road. 14.17.080 - A 10' wide fire apparatus access road exceeding 300' in length will be required to make provisions for the passing of fire apparatus by providing approved pullouts. Pullouts shall be reasonably located, based on sight distance, road curvature, and grade; and shall be a minimum size of 8' wide and 30' long with tapered ends. 14.17.090 -A dead end fire apparatus access road longer than 300' is required to provide provisions for the turning around of fire apparatus within 150' of any facility or structure. See exhibit A—Hammer Head Turn Around, B—Modified Hammer Head, C- Cul De Sac Turn Around, D & E—Pullouts, for examples of accepted turnarounds and pullouts. 14.17.100 - The turning radius of a fire apparatus access road shall be a minimum of 25' interior, 45' exterior centerline radius. 14.17.110 - A fire apparatus access road in excess of 14% grade than 150' to new residential or commercial structures will require an automatic fire sprinkler system installed. 14.17.120 - Where more than 50 units are designed in a residential development, either single family, multifamily, retirement or similar, there shall be a minimum of two access points to the county road system. Such access points shall be located so as to provide for general circulation, alternate emergency vehicle access routes, through access, and general transportation design considerations. One of these access points may be for emergency vehicle use only where the number of units does not exceed 100. Design of an"emergency vehicle use only" access must be approved by the local fire district and Fire Marshal. 14.17.130 - When buildings are completely protected with an automatic fire sprinkler system, the provisions of these standards maybe modified by the Fire Marshal. 14.17.140 - When a bridge is required as part of a fire apparatus access road, it is to be constructed and maintained in accordance with nationally recognized standard. It shall have designed live loading capacity sufficient to carry the imposed load of fire apparatus. An evaluation by a professional engineer will be required to determine the imposed load rating for all of the responding fire districts fire apparatus and shall be approved by the Fire District and Fire Marshal. 14.17.150 - When access roads cannot be installed to these standards due to topography, waterways, nonnegotiable grades or other similar conditions,the Fire Marshal is authorized to require additional fire protection or mitigation as specified in Section 1001.9 of the UFC. The Fire Marshal may also approve access roads which do not meet these requirements if the road provides reasonable access under the individual facts of the case. 14.17.160 - Approved numbers or addresses shall be placed on all new commercial or residential buildings (that require an address), at the beginning of long driveways when the address is not clearly visible from the access road,or in any other areas deemed necessary by the local fire district or Fire Marshal. They shall be placed in such a position as to be plainly visible and legible from the street or road fronting the property. Said numbers shall contrast with their background. 14.17.170—Traffic calming measures on fire apparatus roads (speed bumps, etc) shall be approved by the Fire Marshal before installation. 1 MASON COUNTY FIRE MARSHAL , Ply Mason County Bldg. III 426 W Cedar St PO BOX 186 Shelton,WA 98584 �iIJ�► (360)427-9670 Ext.273 CODE ENFORCEMENT FIRE INSPECTIONS FIRE INVESTIGATION PUBLIC EDUCATION Cul De Sac Turn Around Area required for turn around located at a single residence. In this special case,the area could,for instance,consist of pasture adjacent to the building and will to continue to function as a viable turn around in adverse weather conditions(ie remains solid in any weather). Requirements for roads 20'in width and commerical sites Requirements for roads 12'in width R4 R45 R2 Driving surface R33 in this area Driving surface is not required in this area is not required R28 28 R 40 2 Minimum MASON COUNTY FIRE MARSHAL Mason County Bldg.III 426 W Cedar St PO BOX 186 Shelton,WA 98584 (360)427-9670 Ext.273 CODE ENFORCEMENT FIRE INSPECTIONS FIRE INVESTIGATION PUBLIC EDUCATION Hammer Head Turn Around Direction may be right or left direction(left direction is shown) OVERHANG AREA-Driving surface in this area is not required. No obstructions greater than twelve(12) inches in height are allowed Area required for turn around located at a single residence. In this special case,the area could,for instance,consist of pasture adjacent to the building and will to continue to function as a viable turn around in adverse weather conditions(ie remains solid in any weather). Requirements for roads 20'in width and commerical sites 90 R2 5 2 Requirements for roads 12'in width -90 10 40 R28 8 MASON COUNTY FIRE MARSHAL PI1flII� � Mason County Bldg.III 426 W Cedar St PO BOX 186 Shelton,WA 98584 �1ir�► (360)427-9670 Ext.273 , CODE ENFORCEMENT FIRE INSPECTIONS FIRE INVESTIGATION PUBLIC EDUCATION Modified Hammer Head Direction may be right or left direction (left direction is shown) OVERHANG AREA-Driving surface in this area is not required. No obstructions greater than twelve (12) inches in height are allowed Area required for turn around located at a single residence. In this special case, the area could, for instance, consist of pasture adjacent to the building and will to continue to function as a viable turn around in adverse weather conditions(ie remains solid in any weather). Requirements for roads 20' in width and commerical sites Requirements for roads 12' in width 18 1 10 10 25 28 1 10 0 90 1Wx 90 12— 10 2 R2 28 �-20— 12 c� O 0 m . m Turnouts 0 0 Any dead end fire apparatus access road loner than 300 feet shall have provisions for the turning around of 0 fire apparatus within 150 feet of any structure or facility and have approved provisions for the passing of fire m o o Cu apparatus. z - Co0 D A N x nCP If turnouts are used to accomodate the passing of fire apparatus, they shall be reasonably located based on o 0-) = O sight distance, toad curvature and grade. Turnouts shall be a minimum of 8 fet wide and 30 feet long with M C Z n tapered ends. 21 w A O m D0) C Note: Only access roads which do not maintain continuous width of 20 feet or more need turnouts. z ° Z Cn con .� m a m v Turnouts may be placed on either side of the o -n access road. Adequate sight distance between z ;0turnouts must be maintained. M Greater than 300 feet m (n m r Dead End Access Road (Width: Minimum 12 feet) r U U 00 Di -n Facility or o Tapered Ends O structure located no further than 150 feet from the last turnout r_ n m 0 c n D O Z MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT Mason County Bldg. III, 426 West Cedar Street , PO Box 186, Shelton, WA 98584 www.co.masonma.us (360)427-9670 Belfair(360)275-4467 Elma(360)482-5269 RESIDENTIAL EXHAUST HOOD POLICY Check Appliances listing for residential application only. Purpose: This policy applies to the placement of high output residential exhaust hoods. Exhaust hoods with the capacity of more than 400 cfm(cubic feet per minute)may create negative pressures and backdrafting inside the structure.Mason County wants to assure health and safety, comfort, durability and energy efficiency within the structure. Authority: Mason County Code Title 14. Chapter 14.04 (MCC) International Residential Code(IRC)/International Mechanical Code(IMC) International Residential Code(IRC)(I1VIC) Supplement Washington State Energy Code (chapter 51-11 WAC)and V.I.A.Q.(Ventilation and Indoor Air Quality) General: • Cooking appliances designed,tested, listed and labeled for use in commercial occupancies shall not be installed within dwelling units or within any area where domestic cooking operations occur. MC(G2447.2) • Cooking appliances installed within dwelling units and within areas where domestic cooking operations occur shall be listed and labeled as household-type appliances for domestic use. IRC(G2447.3) ''rocedure: When installing an exhaust hood that has a fan capacity greater than 400 CFM the following criteria must be met: • IRC M1503.4 (IMC 505.2): Makeup air required. Exhaust hood systems capable of exhausting in excess of 400 cfm shall be provided with make-up air at a rate approximately equal to the exhaust air rate. Such make-up air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system. • The fresh air inlet to the area of the appliance is to be located as close to the appliance as possible in the same room. This will minimize the change of comfort temperature and effect on other appliances in the residence. • 303.4.4.4 Outdoor Air Inlets (VIAQ): Inlets shall be screened or otherwise protected from entry by leaves or other material.Outdoor air inlets shall be located so as not to take air from the following areas: a. Closer than 10 feet from an appliance vent outlet, unless such vent outlet is 3 feet above the outdoor air inlet. b. Where it will pick up objectionable odors, fumes or flammable vapors. c. A hazardous or unsanitary location. d. A room or space having any fuel-burning appliances therein. e. Closer than 10 feet from a vent opening of a plumbing drainage system unless the vent opening is at least 3 feet above the air inlet. f. Attic, crawl spaces, or garages. - Additional information: Mason County Building Department staff can assist with identifying code issues for exhaust hoods that have high cfm Fans. Exhaus hoo and inlets(barometric dampers) installed to manufactures specs. Manual on site. Signature: Date: Below is a list of items that building inspectors will typically inspect during a final inspection. Each structure is unique and may contain components that are not included in the list. To obtain temporary occupancy approval life safety requirements must be completed and approved. Temporary occupancy is valid for not more than 180 days (6 mo.). If numbers follow the statement refer to the Plan Review Checklist. 1. Post address in a permanent manner, plainly visible and legible from the street or road fronting the property. Number must contrast with their background. For more information see Standards. For Apparatus Access Roads &# 78 2. All exit doors shall have proper landings including guardrails and handrails, as needed. Pay attention to stair rise/run and picket spacing. (The largest riser and/or tread may not.exceed the smallest by more than 3/8") See deck detail handout and item #31. 3. Smoke detectors must be operational and located in all sleeping rooms and on each floor. If a ceiling adjoining the hallway to the sleeping rooms rises more than 24"a smoke detector will be required in that room as well. #3. 4. The HVAC system will be inspected for code compliance including combustion air if gas appliance, duct installation, cold air return, etc. #15, #20. 5. Garage firewall penetrations, 20-minute rating etc. See items 23 &24 on the plan review checklist. 6. Handrails and guardrails, where required must be installed inside and outside. See deck detail handout and items #32 & #33. 7. Exhaust fans, including kitchen, must be vented to the outside with dampers. Dryer ducts must also be vented to the outside. See items #6,7,8, and 99-104 on the plan review checklist. 8. In bathrooms, toilets, tubs, and showers must be in working order and be caulked to the wall and floor covering. 9. Caulk and seal all penetrations where conditioned and unconditioned spaces communicate including electrical and plumbing penetrations/openings to wallboard/wall covering (exterior walls, floors, and ceilings). #98 10. P-Traps must be installed at all plumbing locations. 11. Corrections, if any, will be checked. Sometimes there are corrections from previous inspections remaining in the crawispace or attic. 12. Divert drainage away from the building (gutters, downspouts, splash blocks, etc.). Backfill must be sloped away from the structure (at least 2%), measured 10-feet from the structure. #48, #74 13. Listed non-removable back flow preventer, hose type vacuum breaker must be installed on all exterior frost-free hosebibs. #21 14. Insulation in attic and crawispace, weather-strip and insulate attic access and crawlspace, if located inside the structure. #88,89,9,91,92 15. Compliance to Ventilation and Indoor Air Quality Code—fresh air, whole house fan, etc.#'s 99.10,101,102,103 & 104. 16. Exterior building must be sealed where penetrations occur (windows, vents, hose bibs, conduits, seams, etc.) 17. Installation of fireplace or stove, if applicable. #'s 11,12,13,14,15,20, &77 18. All wood exposed to weather or is in contact with concrete or soil shall be pressure treated or naturally resistant to decay. Field applied treatment is not approved. Treatment must be applied by the manufacturer. READ plan review checklist numbers 56 &69. 19. Water heater strapped with 22g upper and lower 1/3, 22g pan under water heaters on wood floors, T&P valve installation, pipe and water lines insulated in unheated spaces. See item 18 on the Plan Review Checklist. 20. Check crawlspaces. Insulation installed, 6 mil black vapor barrier overlapped 12 inches, all plumbing supply lines insulated, HVAC ducts properly supported, all corrections from previous inspections completed. 21. And finally.... Read the conditions of your permit and check to make sure geo-technical requirements, if any, are completed. i N.L.01son&Associatesinc. Engineering, Planning and Land Surveying. w June 13 2011 (` c71 4 Juan Esteban PO Box 295 Belfair, WA 98528 RE: 1006 Office without Permit at 730 Alta Drive, Belfair Dear Mr. Esteban, On June 2"d, I met with you at 730 Alta Drive in Belfair to inspect a 1 Ox36 office that was constructed without a permit from Mason County. I have prepared a structural analysis of the building and this letter is a summary of my findings. The office structure is adjacent to an existing single wide manufactured home. The addition is completely self supporting and does not rely on the manufactured home for vertical or lateral support. The building consists of 2 office spaces, a bathroom and a hallway. The construction of the office building is conventional 2x construction. My analysis of the structure is based on Mason County minimum load requirements. I have also used assumed grades of lumber based on my inspection. Most of the structure meets minimum load requirements. Instead of relying on a continuous footing and stemwall, the structure has a post and beam foundation. The building relies on embedded posts at the four corner for lateral support and posts on pier blocks for vertical support. The pier blocks rest on grade and are undersized according to my analysis. I recommend that they be replaced with buried 2 foot by 2 foot concrete pads (12"thick)to provide adequate vertical support and protection from frost heave. Enclosed with this letter are my structural analysis and an 11x17 plan sheet showing the addition and my recommended retrofits. Please note that because this is a structure that will be occasionally occupied, Mason County may have other non-structural requirements based on the current building code. My suggestion is to submit a copy of this letter with the enclosures to Mason County in support of your building permit application. Feel free to contact me with any questions. Sincerely, M.Zq�y • `�` WAS � Matthew Zawlocki, PE h Enclosure: Structural Analysis 11 x 17 building plan �o �F 40916�n 92-10NAL Gam' 2453 BETHEL AVENUE, P.O. BOX 637, PORT ORCHARD, WASHINGTON 98366 (360) 876-2284 FAX (360) 876-1487 S t Oo� �7�7 �t�► G �Rescry� 1�' -Q Xsf 61 c / b b c - i a k. A PROVEri MASON CO NTY ©CD PLAN W . 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FOR INSPECTION � swit)� �U.N G �o -00 '^ SITE V COPY ! � 7S 2� 1 OX ► 0 REVIEWED FON E CODE COMPLIA MASON COUNTY HESE PLANS MUST BE BUILDING DEPARTMENT ON THE JOB SITE 1�nL� _ Date � t FOR INSPECTION CHANGES Documents attached to approved plans: ;LIBMIT CHAN—s FOR APPROVAL v Site plan: -- PRIQR TO PERFORMIr:G Vl, Plan review checklist: is a t Engineering: YEN MUST MEET ALL CURRENT Number of pages I—P44 WASHINGTON STATE CODES �y 6, J I-CTLCrZ Plans include 49 pages of engineering documents that must VENT remain attached to approved plans AT 1 Sq Ft Per 150 Sy Ft UNHEATED STRUCTURE i i