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pool POOL ENGINEERING INC.By: M.ThompsonLL[11111 engineering II Location: Santa Ana, CA,92703-1941 Date: 3/3/2014 <br />- inc. / <br />- Job# 14-0361 <br />WIND UPLIFT ANCHOR DESIGN: <br />Simplified Procedure for Components and Cladding: (Sec. 30.5, ASCE 7-10) <br />V = 110 mph (basic wind speed) <br />Exp. Cat.= C exposure category (Section 26.7, ASCE 7-10) <br />A = 1.45 Adjustment Factor for Building Height (Figure 30.5-1, ASCE 7-10) <br />Kzt = 1 Topographic Factor (Section 26.8.2, ASCE 7-10) <br />Zone = 2 Roof 0 =22.7 deg Area =250.9 sq.ft. <br />Pnet30 =31.9 p.s.f Net Wind Design Pressure, Eqn. 6-2, ASCE 7-10 <br />Pnet = Al<.P net30 =(1.45)(1)(31.9 p.s.f.) = 46.255 p.s.f. <br />(Pnetdesign =46.3 p.s.f. Design Wind Uplift Pressure on Components and.Cladding (16 p.s.f. min. per Sec. 30.2.2, ASCE 7-10) <br />Connection to Existing Roof Framing: <br />FS= 1 (additional factor of saftey applied to withdrawal force) <br />Atrib =19.3 sq.ft.(panel area tributary to each lag screw) <br />D=2.9 p.s.f.(panel dead load) <br />W=46.3 p.s.f.(design wind pressure) <br />Plag = FS*Atrib*(0·6[)-0.6W) = (1)(19.3 sq.ft.)[(0.6)(2.9 p.s.f.)-(0.6)(46.3p.s.f.)] <br />= 501lb. (withdrawal force applied to each lag screw) <br />DIA,ag=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 />Co =1.6 (load duration factor, 2012 NDS) <br />Q=0.7 <br />W' = C*C*W = (1.6)(0.7)(266 lb./in.) = 297.92 lb./in.(adjusted withdrawal value) <br />Pallow = Dpen'WI =(2.5 in.)(297.92 lb./in) = 744.8 lb. <br />Results:DEMAND = 501 lbs. < CAPACITY = 744.8 lbs. ==> OK <br />3/3/2014 5:12 PM <br />\\peanasv2\pool\Projects Solar\2014\0361-14 Residential\14-0361 SOLAR PANEL CALCS.xlsx <br />Page 12 of 13 <br />©Pool Engineering, Inc. 2014