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TOWNSEND RAITT I <br />ROOFTOP PV <br />Project No. 21-001 <br />5/22/25 <br />ROOFTOP SOLAR PANELS PARALLEL TO THE ROOF SURFACE PER ASCE 7-16 29.4.4 <br />Roof Mounted PV Attachment Calculations <br />p = q h (GC p )(†E )(†a ) <br />Kz =0.62 ASCE7 Table 26.10-1 <br />Kzt =1.00 <br />Kd =0.85 ASCE7 Table 26.6-1 <br />V =95 mph <br />Exposure =B <br />qz =12.3 psf (Ultimate) <br />Building Type: <br />Surface Type: Roof <br />Roof Angle : 19 <br />Roof Height: 20 ft Height of Canopy <br />†E=1.5 <br />†a=0.8 <br />1, 2e 2r, 2n <br />GC:-2.0 -2.54 <br />-28.7 -37.3 psf (Ultimate) <br />-17.2 -22.4 psf (Working Stress) <br />Module Dimensions Length Width Area <br />inches inches sq. ft <br />74 41 21.07 <br />Interior Zone 72 in <br />Edge Zone 48 in <br />Attachment area = 18.5 12.33 ft2 <br />Load per attachment = 318.5 276.1 lbs <br />See following page for manufacturer's allowable attachment uplift load <br />Therefore the manufacturer's spacings are ok for the loads <br />Manufacturer Spacing Information <br />Enclosed <br />Uplift <br />Wind Pressure <br />ݍ௛ = .00256 כ ܭ௭ כ ܭ௭௧ כ ܭௗ כ ܸ ଶ <br />4 of 9