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Page 20 of 29 <br /> • <br /> Ross project: HAWARD HOMES LOT 1 by: RR sheet#: <br /> Engineering location: 36xx SHORE AVENUE,EVERETT,WA date: 6/16/2022 <br /> Design client: THE LEREN COMPANY job#: 2027 <br /> Inc <br /> Roof Diaphragm and Chord Design <br /> Unblocked Diaphragm Allowable Shear per NDS Table 4.2B(asd) <br /> G= 0.43 SGAF=[1-(0.5-G)]= 0.93 <br /> Sheathing Common V Seismic V Wind <br /> Grade Nail Size Minimal <br /> Minimum Fastener Mimimum Nominal plf plf <br /> Penetration into Nominal Panel Framing Case Case Case Case <br /> Framing Thickness Width 1 2,3,4,5,6 1 2,3,4,5,6 <br /> 2 153 116 214 163 <br /> 6d 1-1/4 5/16 3 172 130 242 181 <br /> Struct I 2 223 167 312 235 <br /> 8d 1-3/8 3/8 3 246 186 344 260 <br /> 2 265 200 372 279 <br /> 10d 1-1/2 15/32 3 298 223 416 312 <br /> 2 140 102 195 144 <br /> 5/16 3 158 116 221 163 <br /> 2 153 116 214 163 <br /> 6d 1-1/4 3/8 3 172 130 242 181 <br /> 2 200 149 279 209 <br /> 3/8 3 223 167 312 235 <br /> Sheathing and 2 214 158 300 221 <br /> Single Floor 7/16 3 237 177 332 246 <br /> 2 223 167 312 235 <br /> 8d 1-3/8 15/32 3 246 186 344 260 <br /> 2 237 177 332 246 <br /> 15/32 3 270 200 377 279 <br /> 2 265 200 372 279 <br /> 10d 1-1/2 19/32 3 298 223 416 312 <br /> Check Roof Diaphragm <br /> FRONT TO BACK <br /> Case 2 Suport Perpendicular to Shear <br /> V(ult) Dia.D v(asd) <br /> (k) (ft) (plf) <br /> Seismic 8.94 45.0 70 < 177 OK <br /> Wind 7.70 51 < 246 OK <br /> SIDE TO SIDE <br /> Case 2 Suport Perpendicular to Shear <br /> V(ult) Dia.D v(asd) <br /> (k) (ft) (plf) <br /> Seismic 8.94 53.0 59 < 177 OK <br /> Wind 6.37 36 < 246 OI< <br /> Check Tyical Chord For Maximum Force <br /> Vmax(ult)= 6.26 k (asd) M= 41.47 kft <br /> Diaphragm Width= 53.0 ft T=M/D= 922 lb <br /> Diaphragm Depth= 45.0 ft At= 8.25 <br /> Plate Size 2x6 Tallow=Fttauow x At x Cd= 6930 lb > 922 OK <br /> Ft allow= 525 psi <br /> Chord Splice Capacity=(16)16d nails=16 x 122 lb x 1.6= 3123.2 lb>T OK <br />