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1/6/2023 <br />RE: Structural Certification for Solar Installation <br /> Hiner Partners:1605 E 4TH ST, SANTA ANA, CA 92701, USA <br />Attn: To Whom It May Concern <br />Design Criteria <br />Code 2022 California Building Code (ASCE 7-16) <br />Risk category II Wind Load (component and Cladding) <br />Roof Dead Load Dr 10 psf V 95 mph <br />PV Dead Load DPV 4.6 psf (with Ballast)Exposure B <br />Roof Live Load Lr 20 psf <br />This Letter is for the existing roof framing which will support ballasted PV modules. From the site survey, the <br />roof is made of Flat Rolled Composition roofing over roof plywood supported by 2X4 Rafters at 24 inches on a <br />relatively flat roof. The slope of the ballast tilt is approximated to be 5 degrees. <br /> the existing roof framing has been determined <br />to be adequate to support an additional dead weight without structural upgrades. To avoid structural <br />updgrades and/or additional analysis for the lateral resisting system, additional Weight should not exceed <br />that covered in the report. Parameters above ensure that the seismic weight increase is less than 10%. <br />More dead weight can be added only after further analysis of the lateral resisting system are performed. <br />Ballasts seismic and uplift resistance as well as layout are derived and covered by The Ballast report.Capacity <br />calculations were done in accordance with applicable building codes. <br />projects@evengineersnet.com <br />http://www.evengineersnet.com <br />Structural Only <br />1605 E 4th St - 101113848 and <br />20178713 <br />11/15/2023