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09/02/2022 <br />RE: Structural Certification for Installation of Residential Solar <br /> COSME NUNEZ-GARCIA:1310 W 12TH ST, SANTA ANA, CA 92703,USA <br />Code 2019 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 3 psf Exposure C <br />Roof Live Load Lr 20 psf <br />Ground Snow S 0 psf <br />If you have any questions on the above, please do not hesitate to call. <br />Sincerely, <br />Eugene Munyanziza, P.E. <br />EV Engineering, LLC <br />projects@evengineersnet.com <br />http://www.evengineersnet.com <br />Exp: 06/30/2024 <br />Attn: To Whom It May Concern <br />This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of the <br />PV system to existing roof framing. From the field observation report, the roof is made of Single layer <br />composition shingle and Flat Rolled Comp roofing over roof plywood supported by 2X4 Rafters at 24 inches. <br />The slope s of the roof were approximated to be 10 and 20 degrees and the allowable maximum rafter span is 6 <br />feet between supports. <br />After review of the field observation data and based on our structural capacity calculation, the existing roof <br />framing has been determined to be adequate to support the imposed loads without structural upgrades. <br />Contractor shall verify that existing framing is consistent with the described above before install. Should they <br />find any discrepancies, a written approval from SEOR is mandatory before proceeding with install. Capacity <br />calculations were done in accordance with applicable building codes. <br />Design Criteria <br />projects@evengineersnet.com <br />http://www.evengineersnet.com <br />1310 W 12th St <br />10/11/22