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EXISTING BASE SHEAR <br />V = 0.185 x 45,000 LBS = 8,325 LBS <br />DETERMINE NEW BASE SHEAR <br />Determine Seismic Weight of Building with Solar Array: <br />EXISTING <br />SEISMIC =45,000 LBS <br />WEIGHT <br />NEW SOLAR <br />ARRAY =3 PSF x 32 PANELS x 5.8' x 3.4' = 1,894 LBS <br />NEW <br />SEISMIC =45,000 LBS + 1,894 LBS = 46,894 LBS <br />WEIGHT <br />THEREFORE NEW BASE SHEAR: <br />V = 0.185 x 46,894 = 8,676 LBS EQ'N 12.8-1 ASCE 7-16 <br />OK. PER ASCE 7-16 SECTION 11B.4 ALTERATIONS <br />EXISTING LATERAL FORCE RESISTING SYSTEM IS EXEMPT <br />FROM ANALYSIS SINCE NEW SEISMIC FORCE IS <br />LESS THAN 10% GREATER THAN EXISTING SEISMIC FORCE <br />Sht # 7 of 7 <br />2024-0564 Solar Survey Pro 917 W McFadden Ave April 18, 2024 <br />      Loyd W. Martin Professional Engineer, Inc.       <br />9924 Universal Boulevard #224-406 Orlando, FL 32819 Tel:1.310.464.1804 <br />"Alterations may be made to any structure without requiring the existing structure to <br />comply with this standard, provided that the alterations comply with the requirements for a <br />new structure. Alterations that increase the seismic force in any existing structural element <br />by more than 10% or decrease the design strength of any existing structural element to <br />resist seismic forces by more than 10% shall not be permitted unless the entire seismic <br />force-resisting system is determined to comply with this standard for a new structure." <br />End of Calculations <br /> Email: loydwmartin@gmail.com www.loydwmartin.com <br />% CHANGE =8,676 LBS - 8,325 LBS x 100 = 4.2 % < 10 % OK8,325 LBS <br />917 W McFadden Ave - <br />101119790 & 201832007/2/2024