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TYPA ®IoTsuLTaNG Wyssling Consulting- : 76 North Meadowbrook Drive. Alpine, UT 84004 Scott-E. Wyssling,'PE,PP, CME office.(201) 874-3483 swyssling@wysslingconsulting:com. November 2, 2020 Suntuity Solar 2137 Route 35 Holmdel, NJ 07733 Re:. Engineering Services Castro Residence 6622.Foxmoor Drive, Zephyrhills FL 650 13. kW System To Whom It May Concern: Pursuant to:your:request, we have reviewed the following_information regarding solar panel installation on the roof of the above referenced-home: . . . ... I.: Site Visit/Verification:Form re ared'b .a Suntui Solar.:representative identifying:specific P P Y tY. . P 9 P site information including size and spacing of rafters1or 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 was prepared by Suntuity Solar and will be utilized for approval:and construction'of the proposed system. 3. Photographs of the interior.and exterior of the roof system identifying:existing structural. . members and their conditions. Based.on the above information we have evaluated the structural. capacity of the existing roof system to support.the additional loads imposed by:the solar panels and have the following comments related to our review and evaluation: Description of Residence. The existing residence is typical wood.framing'construction with'the roof system consisting of truss,system with all chords constructed of 2 x;4 dimensional lumber at 24" on center. The attic space is unfinished and photos.indicate that.there was free access.to visually inspect the size and condition of the.roof rafters. .All.. wood material utilized for the roof system is,assumed to be Doug-Fir#2 or better with standard construction components. The existing roofing material consists of composite.asphalt shingles. Photos of the dwelling P 9 9. P P 9 9 also indicate that there is a permanent foundation. A. --Loading Criteria Used • 145 MPH wind loading based.on ASCE 7-10 Exposure Category"B"at a slope of 23 degrees sw •- 7 PSF= Dead Load roofing/framing Live Load=20.PSF/0 PSF(where:panels are installed): . • 3 PSF= Dead Load solar panels/mounting hardware Total Dead Load=10 PSF The above values:are within acceptable limits of recognized industry standards for similar structures in accordance with the (FBC 2017, 6th Edition). Analysis performed of the existing roof structure:utilizing the above loading criteria indicates that the existing rafters will support the additional panel loading without damage, if installed correctly.