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01/16/2025 <br />RE: Structural Certification for Installation of Residential Solar <br /> RUBEN VELASCO:526 S ROSS ST, SANTA ANA, CA, 92701 <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 96 mph <br />PV Dead Load DPV 3 psf Exposure B <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 />Signed:01/16/2025 <br />Sincerely, <br />Eugene Munyanziza, P.E. <br />EV Engineering, LLC <br />projects@evengineersnet.com <br />http://www.evengineersnet.com <br />Exp: 06/30/2026 <br />This Letter is for the existing roof framing which supports the new PV modules as well as the attachment <br />of the PV system to existing roof framing. From the field observation report, the roof is made of <br />Composition Shingle roofing over roof plywood supported by 2X4 Rafters at 24 inches. The slope of the <br />roof was approximated to be 26 degrees. <br />After review and based on our structural capacity calculation, the existing roof framing has been <br />determined to be adequate to support the imposed loads without structural upgrades. <br /> I certify that the PV module assembly including all attachments supporting it have been reviewed to be in <br />accordance with manufacturer's specifications. Capacity Calculations were done in accordance with <br />applicable building codes. <br />projects@evengineersnet.com <br />http://www.evengineersnet.com <br />HISTORIC-526 S <br />Ross St3/21/2025