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Page # 5 <br />CALCULATION OF DESIGN WIND LOADS <br />Wind Design Criteria <br />Wind Design Code ASCE 7-05 <br />Wind Design Method Partially/Ftlly Ertdo-sed Method <br />Basic Wind Speed V 85 mph Fig. 6-1 <br />Exposure Category C Section 6.5.6.3 <br />Roof Style Gable Roof Fig. 6-118/C/D-14NB <br />Mean Roof Height h 15 ft Section 6.2 <br />Effective Roof Slope 16° <br />Effective Rafter Spacing 24" O.C. <br />Effective Wind Area (1 Module) A 16.7 sf IBC 1509.7.1 <br />Wind Pressure Calculation Coefficients <br />Wind Pressure Exposure Kz <br />Topographic Factor Kzt <br />Wind Diredionality Factor K# <br />Importance Factor I <br />Velocity Pressure h <br />0.85 <br />1.00 <br />0.85 <br />1.0 <br />qh = 0.00256 (Kz) (Kzt) (Kd) (V2) (I) <br />13.3 psf <br />Table 6-3 <br />Section 6.5.7 <br />Table 6-4 <br />Table 6-1 <br />Equation 6-15 <br />Wind Pressure <br />Ext. Pressure Coefficient (Up)-0.88 Fig. 6-118/C/D-140\/BGCB (up) <br />Ext. Pressure Coefficient (Down)GCp (Down)0.46 Fig. 6-118/C/D-14NB <br />Design Wind Pressure p P=% (GCB)Equation 6-22 <br />Wind Pressure Up P(UP)-11.7 psf <br />Wind Pressure Down P(down)10.0 psf <br />ALLOWABLE STANDOFF SPACINGS <br />X-Direction Y-Direction <br />Max Allowable Standoff Spacing_Landscape 72"37" <br />Max Allowable Cantilever Laridscape 24"NA <br />Standoff Configuration Landscape Not-Staggered <br />Max StandgffIribulary Area Trib 19 sf <br />PV Assembly Dead Load W-PV 3 psf <br />PV Dead Load at Standoff P-PV 56 lbs <br />Net Wind Uplift at Standoff T-actual _ .___ __-185 lbs <br />Up'!Mae€ity of Standoff T-allow 637 lbs <br />Standoff Demand/Capacity DCR 29.0% <br />r <br />. <br />.. <br />-