Laserfiche WebLink
DocuSign Epvelope ID:AEBC57C5-F674-47BB-9B17-2C5A67CF630E . <br /> m 1800.W Ashton Blvd, <br /> v'vint.Solar Lehi, UT 84043 <br /> A sunrun COMPANY <br /> J.Matthew Walsh, PE Kirk M. Nelson, SE Samuel Brown, PE-Civil <br /> Director of Engineering Structural Engineering Structural Engineering <br /> james.walsh@sunrun:com kirk.nelson@sunrun.com sam.brown@sunrun.com <br /> December 30, 2020. <br /> Revised January 13, 2021 <br /> Re: Structural Engineering Services <br /> Guinta Structure <br /> 36161 Stable Wilk Ave, Zephyrhills,-FL <br /> S-6543383; CAD Version:4; FL-01 <br /> To Whom.It May Concern: <br /> We have reviewed the following information regarding solar panel installation on the roof of the above referenced <br /> structure: <br /> 1. Site visit by a representative from our office under my supervision identifying specific interior and <br /> exterior site information including the condition of the existing roof system and the size,.spacing, and <br /> condition of existing structural framing members. Information gathered during the site visit includes <br /> photographs, sketches, and verification forms. <br /> 2. Design drawings of the proposed PV System layout, including details to mount the new solar.panels to <br /> the existing roof. <br /> Based on the above information, we have evaluated the structural capacity of the existing roof system to support <br /> the additional loads imposed by the solar panels and have the following comments related toour review and <br /> evaluation: <br /> A.,Description of Structure: <br /> The existing structure has typical wood framing construction with a maximum of two layers of composite shingle <br /> roofing: All wood material-utilized for the roof system is assumed to be Southern Pine#2 or better with standard: <br /> construction components. The designed areas of the home consist of the following framing methods: <br /> • Roof Section: Prefabricated trusses at 24" on center. Survey photos indicate that there was free access <br /> to verify the framing size and spacing. <br /> B. Loading Criteria <br /> 14.66-PSF= Dead Load (roofing/framing) <br /> 3.00 PSF= Dead Load (solar panels/mounting hardware) <br /> 17.66 PSF=Total Dead Load <br /> 20 PSF=Roof Live Load (based on local requirements) <br /> Wind speed of 138 mph (based on Exposure Category B-the total area subject to wind uplift is calculated for the <br /> Interior, Edge, and Corner Zones of the dwelling.) <br /> C.Solar Panel Anchorage <br /> 1. Installation shall proceed in accordance with the applicable guidelines and recommendations indicated below. <br /> If, during solar panel installation; the roof framing members appear.unstable or deflect non-uniformly, our office <br /> should be notified before proceeding with the installation. <br /> • SnapNrack Installation Manual,which can be found on the SnapNrack website(https:Hsnapnrack.com). <br /> vivint.Solar° <br /> Page 1 of A SUf11run COMPANY <br />