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pool POOL ENGINEERING INC.By: R. McPherson <br />engineering Location: Santa Ana, CA,92707-2824 Date: 12/2/2013 <br />- inc. / <br />-- Job# 13-2502 <br />WIND UPLIFT ANCHOR DESIGN: <br />Simplified Procedure for Components and Cladding: <br />A = 1.21 Adjustment Factor for Building Height (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 =22.7 deg Area = <br />Pnet30= 21 p.s.f. Net Wind Design Pressure, Eqn. 6-2, ASCE 7-05 <br />Pnet = AK:t|Pnet3O =(1.21)(1)(1)(21 p.s.f.) = 25.41 p.s.f. <br />316.1 sq.ft. <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 />Ar·b -15.3 sq.ft.(panel area tributary to each lag screw) <br />D=2.8 p.s.f.(panel dead load) <br />W=25.4 p.s.f.(design wind pressure) <br />P.8 = FS*Atrib'(0.6D-W) =(1)(15.3 sq.ft.)[(0.6)(2.8 p.s.f.)-(25.4ps.f.)] <br />= 363.9lb. (withdrawal force applied to each lag screw) <br />DIAI@8=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=O.50) <br />CD =1.6 (load duration factor, 2005 NDS) <br />Q=0.8 <br />W'= Q>*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 />Resillts:DEMAND = 363.9 lbs. < CAPACITY = 851.2 lbs. => OK <br />12/2/20134:22 PM <br />\\peanasv2\Pool\Projects\2013\2502-13 Solar Panel - Residential\13-2502 SOLAR PANEL CALCS TO HOUSE.xlsx <br />Page 12 of 13 <br />©Pool Engineering, Inc. 2013 <br />--