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Design wind pressures on Panels <br />Wind Uniform Lateral Load (psf): <br />ASCE 7-16, Chapter 30: <br />Risk Category = <br />Exposure Category = <br />Height above ground =ft <br />Enclosure Class = <br />Velocity pressure <br />qh = qz = 0.00256 KzKztKdKeV2 eqn (26.10-1) <br />Kz =Table 26.10-1 <br />Kzt = <br />Kd = <br />Ke =Conservative <br />Vd =mph <br />qh = psf <br />Design Wind Pressures <br />p = qh[GCp-Gcpi] C&C Design Wind Pressures, eqn (30.3-1) <br />GCpi = varies by zone, see below <br />GCpi = , table 26.13-1 <br />C&C Design Wind Pressures, Gable Roof (7 - 20 deg) <br />C&C Pressures <br />, GCp Gable Roof (7 - 20 deg) <br />, 0.87 -33.12 , 23.50 wall corner zones (5)Fig. 30.3-1 <br />, 0.87 -27.53 , 23.50 wall middle zones (4)Fig. 30.3-1 <br />, 0.45 -71.17 , 14.10 roof corner zones (3)Fig. 30.3-2B <br />, 0.45 -48.79 , 14.10 roof edge zones (2)Fig. 30.3-2B <br />, 0.45 -48.79 , 14.10 roof middle zones (1)Fig. 30.3-2B <br />, 0 -93.55 , 10.00 overhang corners (3)Fig. 30.3-2B <br />, 0 -75.64 , 10.00 overhang middles (2 &1)Fig. 30.3-2B <br />ASCE 7-16, Sect. 29.4.4 (wind on solar panels): <br />A panel edge is exposed if within 0.5h = 4.88 ft of roof edge <br />array edge factor γ E = 1.5 for uplift loads on panels occuring within 1.5 Lp from exposed edge <br />1.0 otherwise <br />Effecive wind area A =sf <br />pressure eq. factor γ a =0.8 <br />psf <br />#### psf 11.3 psf at edge zones, edge factor = <br />-0.18 <br />7.98 <br />-39.03 <br />multiply by 1.5 for mount where edge panel > <br />4.88 ft from from roof edge for -58.55 psf <br />1.00 <br />Worst case down <br />pressure (zone 2) = <br />-2 <br />-2 <br />-4 <br />-3.2 <br />Worst case uplift <br />(zone 1) = <br />-1.3 <br />-1.05 <br />-3 <br />1.00 <br />0.85 <br />110 <br />22.38 <br />0.18 <br />1.00 <br />GCp p (psf) <br />0.85 <br />II <br />C <br />9.75 <br />Enclosed Building <br />22-0423-PV 4/26/2022 Page 8 <br />1920 S Kilson Dr <br />05/31/22