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I ` <br /> � • . <br /> Wind Uplift <br /> Simplified Procedure for Componenets and Cladding <br /> ASCE 7-10,Section 30.5 <br /> V= 145 mph Basic Wind Speed <br /> Exposure D ASCE 7-10,Section 26.7 <br /> � = 1.47 Adjustment Factor for building height,ASCE 7-10,Figure 30.5-1 <br /> Kn= 1 Topographic Factor,ASCE 7-10,Section 26.8.2 <br /> Roof 0= 18.0 deg <br /> Sanchor= 48 in Horizontal spacing of roof anchors <br /> •��;b= 12.80 sf Panel Area tributary to each roof anchor <br /> Pnet30 Net Wind Design Pressure,ASCE 7-10,Figure 30.5-1 <br /> Roof Zone Zone 1 Zone 2 Zone 3 As shown in ASCE 7-10,Figure 30.5-1 <br /> 31.5 psf 49.1 psf 89.3 psf <br /> Pnet=�KzcP�ec�o— Design Wind Uplift Pressure,ASCE 7-10,Equation 30.5-1 <br /> Zone 1 Zone 2 Zone 3 <br /> 46 psf 72 psf 131 psf <br /> P„��= 16 psf Minimum Design Wind Pressure,ASCE 7-10,Section 30.2.2 <br /> Use 46 psf Use 72 psf Use 131 psf <br /> Connection to E�sting Roof Framing <br /> F.S.= 1 Additional Factor of Safety applied to withdrawl force,if desired <br /> A�;b= 12.80 ftz <br /> DLPa1e�= 2.59 psf <br /> Zone 1 Zone 2 Zone 3 <br /> W„pi;r�= 46 psf 72 psf 131 psf <br /> P�ag=F.S.x AV;b x(0.6D-0.6W) Withdrawl force for each roof anchor <br /> Zone 1 Zone 2 Zone 3 <br /> -335.21bs -267.21bs -246.91bs <br /> Connection Capacity <br /> db= 5/16 in Lag Screw diameter <br /> DP�„= 2.50 in Lag Screw penetration into existing framing member <br /> Southern Pine Species ofwood framing <br /> CD= 1.6 Load Duration Factor for Wind Loading,NDS Table 2.3.2 <br /> Ci= 0.7 Temperature Factor,NDS Table 103.4 <br /> W= 307 Ib/in Withdrawl Capacity,NDS Equation 11.2-1 <br /> W'=Cn x C,x W= 3441b/in Adjusted withdrawl value <br /> Pa��ow=Dp�n X W'= 3591bs <br /> Zone 1 Zone 2 Zone 3 <br /> DEMAND= 3�S lbs 2671bs 2471bs <br /> Max Load=0.390 OK <br /> CAPACITY= 8591bs 8591bs 8591bs <br /> � � � <br /> Page 3 of 3 � �, , � <br />