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4 Inverter Compact Skid <br />Seismic Design Criteria <br />Fp(max)=1.6 * SDS * Ip * Wp = <br />Fp(min):=0.3 * SDS * Ip * Wp = <br />Fp := <br />Fv:=0.2 * SDS * Wp = <br />Wind Pressure P = <br />where,qh = = <br />Design Wind Speed V = <br />Velocity Pressure Coefficient Kz = <br />Topographic Factor Kzt = <br />Wind Directionality Factor Kd = <br />Ground Elevation Factor Ke = <br />Gust Factor G = <br />Wind Pressure Coefficient Cf = <br />Wind Load - Lateral qz*G*Cf = LRFD <br />Seismic Design Values SDS 1.048 <br />Importance Factor Ip 1 <br />PAGE NO. <br />Target 1441 W. 17th St. Santa Ana Solar Rooftop Project DATE: <br />Seismic Design Criteria <br />NS STRUCTURAL ENGINEERING, INC MADE BY: <br />4642 Rockland Place La Canada <br />Flintridge, CA 91011 <br />CHECKED BY: NS <br />Component Response Modification Factor Rp 6 <br />z/h 1 <br />Seismic Design Category D <br />Component Amplification Factor ap 2.5 <br />1.677 Wₚ <br />0.314 Wₚ <br />0.4 * ap * SDS * Wp * (1+2z/h) = 0.524 WₚRp / Ip <br />Max Building Height h 30.0 ft Risk Category II <br />0.210 Wₚ <br />Wind Pressure Variables <br />Roof Slope < 7° Exposure Category B <br />Importance Factor 1 <br />qh*G*Cf Section <br />0.00256KzKztKdKeV2 13.7 psf 26.10.2 <br />Parapet Height hpt - Wind Speed V 95 mph <br />0.85 26.6 <br />1 26.9 <br />0.85 <br />1.6 <br />95 mph Fig. 26.5-1A <br />0.700 26.10.1 <br />1 26.8.2 <br />18.7 psf Fig. 29.4-2 <br />1441 W 17th St - 101115926 & <br />20180369 <br />11/16/2023