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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 3,300 Sq. ft <br />Approximate <br />Effective =3,300 sq. ft. x 30 psf ave. = 99,000 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 />2025-1634 Calzona Solar Paul Nguyen July 16, 2025 <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 />Exp. 3-31-19 <br />C L <br />­2187