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V = 0.185 x 12,000 LBS = 2,220 LBS EQ'N 12.8-1 ASCE 7-16 <br />DETERMINE NEW BASE SHEAR <br />Determine Seismic Weight of Building with Solar Array: <br />EXISTING <br />SEISMIC <br />WEIGHT <br />= 12,000 LBS <br />NEW SOLAR <br />ARRAY 3 PSF x 7 PANELS x 3.3' x 5.5' = 381 LBS= <br />NEW <br />SEISMIC <br />WEIGHT <br />= 12,000 LBS + 381 LBS = 12,381 LBS <br />THEREFORE NEW BASE SHEAR: <br />V = 0.185 x 12,381 = 2,291 LBS EQ'N 12.8-1 ASCE 7-16 <br />% CHANGE = 2,291 LBS - 2,220 LBS <br />2,220 LBS x 100 = 3.2 % < 10% OK <br />OK. PER ASCE 7-16 SECTION 11.B.3 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 />"Alterations are permitted to be made to any structure without requiring the <br />existing structure to comply with this standard provided the alterations comply <br />with the requirements for a new structure. Alterations that increase the <br />seismic force in any existing structural element by more than 10 percent or <br />decrease the design strength of any existing structural element to resist <br />seismic forces by more than 10 percent shall not be permitted unless the <br />entire seismic force-resisting system is determined to comply with this <br />standard for a new structure." <br />End of Calculations <br />EXISTING BASE SHEAR <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 />Sht # 8 of 8 <br />Exp. 3-31-19 <br />No. C58724 <br />NITRAMW.DYO <br />REGISTEREDPROFESSIONALENGINEER <br />C <br />V <br />L <br />FOETATS <br />ALIFORNIAICIL <br />123 <br />2022- 3209 Plug It In Solar Chad Barker Date: August 09, 2022 <br />2014 N Flower St <br />09/12/22