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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 3,700 Sq. ft <br />Approximate <br />Effective =3,700 sq. ft. x 15 psf ave. = 55,500 LBS <br />Seismic Weight <br />DETERMINE BASE SHEAR <br />V = Cs W EQ'N 12.8-1 ASCE 7-22 <br />EQ'N 12.8-2 ASCE 7-22 <br />R = THE RESPONSE MODIFICATION FACTOR IN TABLE 12.2-1 <br />R =4 ORDINARY REINFORCED CONCRETE 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 ==0.3 EQ'N 12.8-2 ASCE 7-22 <br />Sht # 6 of 7 <br />2023-4093 Axis Solar Scott Bourdelais July 13, 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 =SDS <br />R <br />Ie <br />SDS <br />R <br />Ie <br />2060 N Tustin Ave - 101116106 & <br />20180500 <br />10/4/2023