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.lili pool POOL ENGINEERING INC.By: R. Lopez ,Cd_id.1 engineering I ,1 Location: Santa Ana, CA,92705-1765 Date: 10/21/2013- inc. j <br />-/ Job#13-2165 <br />WIND UPLIFT ANCHOR DESIGN: <br />Simplified Procedure for Components and Cladding: <br />A = 1.21 Adjustment Fattor foi Building Heikht (Figure 6-3, ASCE 7-05) <br />Kzt = 1 Topographic Factor for Building Height (Figure 6-4, ASCE 7-05) <br />I = 1 Importance Factor <br />Zone = 2 Roof 0 =18.5 deg Area =732.2 sq.ft. <br />Pnet30 = 21 p.s.f.Net Wind Design Pressure, Eqn. 6-2, ASCE 7-05 <br />Pnet - Zt- AK IP ./80 =(1.21)(1)(1)(21 p.s.f.) = 25.41 p.s.f. <br />(Pnet)design = 25.4 p.s.f.Design Wind Uplift Pressure on Components and Cladding (10 p.s.f. min.) <br />Connection to Existing Roof Framing: <br />FS= 1 (additional factor of saftey applied to withdrawal force) <br />Atrib -16.1 sq.ft.(panel area tributary to each lag screw) <br />D=3.0 p.s.f.(panel dead load) <br />W=25.4 p.s.f.(design wind pressure) <br />Piag = FS*Au,b*(0.6[)-W) =(1)(16.1 sq.ft.)[(0.6)(3 p.s.f.)-(25.4p.s.f.)] <br />= 379.3lb. (withdrawal force applied to each lag screw) <br />DIAIag=5/16 in.(lag screw diameter) <br />D -- 2.50 in.(lag screw penetration into existing framing member)pen <br />W=266 lb./in.(lag screw reference withdrawal design value - NDS Table 11.2A, G=0.50) <br />CD =1.6 (load duration factor, 2005 NDS) <br />Ct l 0.8 <br />W' = Co*Ct*W = (1.6)(0.8)(266 lb./in.) = 340.48 lb./in.(adjusted withdrawal value) <br />Pallow =Dpen*W' =(2.5 in.)(340.48 lb./in) = 851.2 lb. <br />Results:DEMAND = 379.3 lbs. < CAPACITY = 851.2 lbs. ==> OK <br />10/21/2013 10:34 AM <br />\\peanasv2\Pool\Projects\2013\2165-13 Solar Panel - Residential\13-2165 SOLAR PANEL CALCS.xlsx <br />Page 12 of 13 <br />©Pool Engineering, Inc. 2013