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Do M u S Domus Structural Engineering, LLC <br /> S T R E) C T I t R A 1, P.O. Box 560 <br /> Broomfield, CO 80038 <br /> ENGINEER ING i. LC 530-864-7055 <br /> projects@domusstruc.com <br /> Wind Calculations <br /> Per ASCE 7-10 Components and Cladding <br /> Input Variables <br /> Wind Speed 110 mph <br /> Exposure Category C <br /> Roof Shape */Gable <br /> Roof Slope 24 degrees <br /> Ioban RoofHeight 20 8 <br /> Effective Wind Area 21.3$ <br /> Design Wind Pressure Calculations <br /> Wind Pressure P=gh*G'Cn <br /> qh=0.00256*Kz*Kzt*Kd*V^2 (Eq.30.3-1) <br /> Kz(Exposure Coefficient)=0.9 (Table 30.3-1) <br /> Kzt(topographic factor)= 1 (Fig.26.8-1) <br /> Kd(WndDirecnonalityFactor)= 0.85 (Table 26.6-1) <br /> V(Design Wind Speed)=110 mph (Fig.26.5-1A) <br /> Risk Category=It (Table 1.5-1) <br /> qh= 23.70 <br /> 0.6*qh= 14.22 <br /> - Standoff Uplift Calculations-Portrait _ <br /> Zone 1 Zone 2 Zone 3 Positive <br /> GCp= -0.85 -1.52 -2.42 0.43 (Fig.30.4-1) <br /> Uplift Pressure- -12.07 psi -21.65 psi -34.39 psi 10.1 psi <br /> X Standoff Spacing= 4.00 4.00 2.67 <br /> Y Standoff Spacing- 6.08 3.041666667 3.04166667 <br /> Tnbutary Area= 24.33 12.17 8.11 <br /> Dead Load on Attachment= 73.00 36.50 24.33 <br /> Footing Uplift(0.613+0.6W)= -2501b -2421b -264 lb <br /> jff Standoff Uplift Calculations-Landscape <br /> Zone 1 Zone 2 Zone 3 Positive <br /> GCp= -0.85 -1.52 -2.42 0.43 (Fig.30.4-1) <br /> Uplift Pressure= -12.07 psi -21.65 psi -34.39 psi 10.0 psi (Nhiurnun) <br /> X Standoff Spacing= 6.00 6.00 4.00 <br /> Y Standoff Spacing- 3.50 1.75 1.75 <br /> Tnbutary Area= 21.00 10.50 7.00 <br /> Dead Load on Attachment= 63.00 31.50 21.00 <br /> Footing Uplift(0.613+0.0�= -216 lb -2081b -228 lb <br /> Standoff LTphft Check <br /> Nhximum Design Uplift--264 lb <br /> StandoffLTprd Capacity=450 Ib <br /> 450 lb capacity>264 lb demand Therefore,OK <br /> Fastener Capacity Check <br /> Fastener=l-5/16"dia.lag <br /> Number ofFasteners=1 <br /> Embedment Depth=2.5 <br /> Pullout Capacity Per Inch= 250 lb <br /> Fastener Capacity=625 lb <br /> w/F.S.of 1.5&DOLof 1.6=667 lb <br /> 667.2 lb capacity>264 Ib demand Therefore,OK <br /> Taft-Farren Everett WA 3 <br />