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ECHELBARGER- 3 STORY I December 4, 2018 I 7976 I 4 <br /> SUMMARY: <br /> WIND(front-rear) WIND(left-right) SEISMIC <br /> FV(3RD)= 4217 lbs 4097 lbs 6227 lbs <br /> EV(2ND) = 4003 lbs 4023 lbs 3483 lbs <br /> FV(MAIN)= 4003 lbs 3755 lbs 1894 lbs <br /> TOTAL= 12223 lbs 11874 lbs 11605 lbs <br /> DIAPHRAGM SHEAR: 240 PLF <br /> Total diaphragm length = 38.5 ft Sub-diaphragm length=1 38.5 ft <br /> Diaphragm width= 40.0 ft FV(MAIN)= 8,472 lbs <br /> = FV(roof) = 8472 lb = 106 PLF o.o ft <br /> (2)(width) 80 ft 20.0 ft <br /> table 4.3A of the AF&PA SDPWS-2008 240 PLF <br /> USE 15/32 CDX ROOF SHEATHING OR 3/4 T&G CDX SUBFLOORING <br /> CHORD: <br /> Sub-diaphragm length= 38.0 ft Total-diaphragm length = 38.5 ft <br /> Sub-diaphragm width= 40.0 ft <br /> T = M = FV x(diaphragm length) = 8362 x 38 ft = 993 lbs <br /> B 8 x(diaphragm width) 8 x 40 ft <br /> Top Plate Size 2x6 Species/Grade: HF#2 <br /> Area = 8.25 inA2 Ft = 525 psi <br /> Load duration(CD)= 1.60 Tallowable = Area x CD x Ft = 6,930 lbs <br /> Since T allowable is greater than T applied. OK. <br /> SHEAR CAPACITY OF 10d COMMON NAIL = 102 lbs 102 x Cd x p= 163 lbs 2008 NDS <br /> #OF NAILS PER 4 FT SPLICE= 993 lbs = 6 <br /> 163 lbs <br /> USE 2x6 HF#2 TOP PLATE W/ (8) 10d COMMON NAILS PER SPLICE. <br />