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Project: <br />Location: <br />Calc. by: <br />Date: <br />LATERAL (SEISMIC) LOAD CHECKS DUE TO ADDITION OF (N) PHOTOVOLTAIC SYSTEM <br />PER 2018 IEBC | 2019 CEBC SECTION 503.4 <br />Existing Roof Seismic Weight: <br />Existing Seismic Weight @ Roof Level, WE = <br />New PV System Seismic Weight: <br />Seismic Weight of New PV System, WPV = <br />3.5%< 10%, Therefore O.K. <br />Albear Residence <br />Santa Ana, CA <br />PE <br />9/20/2021 <br />27,062 LBS <br />WEIGHT <br />(LBS) <br />1,628 <br />3,907 <br />6,624 <br />14,904 <br />* Note: Wall Height, H= 8'-0" <br />Therefore, the exception provided under IEBC / CEBC Section 503.4 applies since the (N) <br />load due to the addition of PV System does not exceed the 10% threshold of the existing <br />seismic weight. <br />% Increase in Lateral (Seismic) Weight @ Roof Level <br />Due to PV System Addition, %-Increase = WPV / WE = <br />941 LBS <br />ELEMENT <br />UNIT WEIGHT <br />(PSF) <br />AREA <br />(SQ.FT) <br />WEIGHT <br />(LBS) <br />PV System 3 313.75 941 <br />AREA <br />(SQ.FT) <br />UNIT WEIGHT <br />(PSF) <br />3265 <br />16569 <br />Interior Walls* <br />Exterior Walls* <br />16564Ceiling <br />326 <br />Roof DL <br />(7/8" Stucco) <br />12 <br />28202 CABOT ROAD, SUITE 300 <br />LAGUNA NIGUEL, CA 92677 <br />ELEMENT <br />LAGUNA <br />CONSULTING ENGINEERS <br />LAGUNA PACIFIC GROUP, INC. <br />Page 5 <br />812 N Baker St <br />12/14/21