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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 />2.7% < 10%, Therefore O.K. <br />Minnis Residence <br />Santa Ana, CA <br />PE <br />11/12/2021 <br />45,993 LBS <br />WEIGHT <br />(LBS) <br />2,179 <br />5,230 <br />11,872 <br />26,712 <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 />1,235 LBS <br />ELEMENT <br />UNIT WEIGHT <br />(PSF) <br />AREA <br />(SQ.FT) <br />WEIGHT <br />(LBS) <br />PV System 3 411.8 1,235 <br />AREA <br />(SQ.FT) <br />UNIT WEIGHT <br />(PSF) <br />4365 <br />29689 <br />Interior Walls* <br />Exterior Walls* <br />29684Ceiling <br />436 <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 />2401 N Hathaway <br />08/17/22