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Thrust Calculation <br />Roof Dead Load QD =17.00 psf <br />Live Roof Load QLr =20 psf <br />Length L =11.00 ft <br />Eave Le =1.50 ft <br />Rafter Spacing S =1.33 ft <br />Slope s =4 :12 <br />Degrees =18.4 <br />Height H =3.67 ft <br />Adjusted Roof Dead Load to slope QD_adj = QD / COS=17.92 psf <br />Tie Location h =3.67 ft <br />Dead Load PD = (L+Le)*s * QD_adj =298 lbs <br />Live Load PLr = (L+Le)*s * QLr =332.5 lbs <br />Total Load Pa =630 lbs <br />Load at Wall Pwall = Pa =630 lbs <br />Tension at Tie =817 lbs <br />Number of Fastener Required 10d <br />Diameter of Common Nail D =0.148 in <br />Capacity of Common Nail Z =118 lbs <br />Embedment Depth lem =1.5 in <br />Load Duration Factor CD =1.25 <br />Adjusted Capacity =147.5 lbs <br />Number of Nails Required T / Z'=6 nails <br />Tension Capacity of Tie <br />Tie size 2x6 <br />Area A =8.25 in2 <br />Tension Capacity Ft =575 psi <br />Demand Capacity Ratio =0.34 < 1 OK <br />Use 2x6 @ 16'' o.c. w/ (6) 10d Common Nails <br />DCR 2T <br />F A <br />T <br />P L L <br />2 P L <br />h <br />ZN MIN l <br />10D ,1 C Z <br />2 <br />2217 W Civic Center Dr <br />Unit# 29/9/2024