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Check Seismic load due to added dead load of photovoltaic system. <br />Determine Seismic Weight of Existing Building: <br />Effective Existing Seismic Weight <br />Area of (E) Building = Approximately 600 Sq. ft <br />Approximate <br />Effective = 600 sq. ft. x 15 psf ave. = 9,000 LBS <br />Seismic Weight <br />DETERMINE BASE SHEAR <br />V = Cs W EQ'N 12.8-1 ASCE 7-16 <br />EQ'N 12.8-2 ASCE 7-16 <br />R = THE RESPONSE MODIFICATION FACTOR IN TABLE 12.2-1 <br />R = 6.5 WOOD SHEAR WALLS <br />Ie = 1.0 IMPORTANCE FACTOR <br />SDS = 2/3 x SMS <br />SMS = FA x SS <br />SMS = 1.2 x 1.5 = 1.8 <br />SDS = 2/3 x 1.8 = 1.2 <br />Cs == 0.185 EQ'N 12.8-2 ASCE 7-16 <br />Sht # 6 of 7 <br />2023-4435 Grid Alt LA Habitat for Humanity OC August 8, 2023 <br /> Loyd W. Martin Professional Engineer, Inc. <br />9924 Universal Boulevard #224-406 Orlando, FL 32819 Tel:1.310.464.1804 <br /> Email: loydwmartin@gmail.com www.loydwmartin.com <br />Cs = <br />SDS <br />R <br />Ie <br />SDS <br />R <br />Ie <br />826 N Lacy St <br />08/30/23