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<br /> 76 North Meadowbrook Drive <br />Scott E. Wyssling, PE Alpine, UT 84004 <br />Jon P. Ward, SE, PE office (201) 874-3483 <br />Gregory T. Elvestad, PE swyssling@wysslingconsulting.com <br /> <br /> March 21, 2022 Current Insight 2852 W. Amini Way South Jordan, UT 84095 Re: Engineering Services Devereaux Residence 1417 S Broadway, Santa Ana CA 8.760 kW System To Whom It May Concern: We have received information regarding solar panel installation on the roof of the above referenced structure. Our evaluation of the structure is to verify the existing capacity of the roof system and its ability to support the additional loads imposed by the proposed solar system. <br />A. Site Assessment Information 1. Site visit documentation identifying attic information including size and spacing of framing for the existing roof structure. 2. Design drawings of the proposed system including a site plan, roof plan and connection details for the solar panels. This information will be utilized for approval and construction of the proposed system. <br />B. Description of Structure: <br /> <br />Roof Framing: 2 x 8 dimensional lumber spaced at 24” on center <br />Roof Material: <br />Roof Slope: <br />Attic Access: <br />Foundation: Permanent <br /> <br />C. Loading Criteria Used <br /> <br />• Dead Load <br />o Existing Roofing and framing = 7 psf <br />o New Solar Panels and Racking = 4.85 psf <br />o TOTAL = 11.85 PSF <br />• Dead Load <br />o Existing Roofing and framing = 7 psf <br />o New Solar Panels and Racking = 3 psf <br />o TOTAL = 10 psf <br />• Live Load = 20 psf (reducible) – 0 psf at locations of solar panels <br />• Ground Snow Load = 0 psf <br />• Wind Load based on ASCE 7-16 <br />o Ultimate Wind Speed = 95 mph (based on Risk Category II) <br />o Exposure Category C <br /> <br />Analysis performed of the existing roof structure utilizing the above loading criteria is in accordance <br />with the 2019 California Building Code, including provisions allowing existing structures to not <br />require strengthening if the new loads do not exceed existing design loads by 105% for gravity <br />elements and 110% for seismic elements. This analysis indicates that the existing framing will <br />support the additional panel loading without damage, if installed correctly. <br /> <br /> <br />Rolled Roofing0 degreesAccessible <br />1417 S Broadway <br />9/19/2024