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STRUCTURAL CERTIFICATION REPORT <br />Roof-mounted Solar Panels <br />November 17, 2022 <br />To: Empower Home Re: Dolores Espinoza <br />1300 E Shaw Ave #173 1113 S Shelley St <br />Fresno, CA 93710 Santa Ana, CA 92704 <br />Empower Home proposes to install new roof-mounted solar panels at this residence and asked Right Angle Engineering <br />to review the existing structure for suitability. This letter summarizes the methods that were used to survey, evaluate, and <br />certify the existing roof framing and the attachment of the new solar panels to it. Pictures and calculations are available <br />on request. <br />STRUCTURAL DESIGN <br />Building Code: California Building Code 2019 <br />Design Standards: ASCE 7-16 <br />Snow: Ground: pg= 0.0 psf | Flat Roof: pf= 0.0 psf | Sloped Roof: ps= 0.0 psf <br />Wind: Ultimate Wind Speed = 95.0 mph | Exposure = B <br />Seismic: Risk Category = 2 | Seismic Design Category = A | Site Class = D <br />STRUCTURE <br />Field Technicians from Empower Home visited the site and observed the existing structure : <br />Array Name Panel Quantity Roof Framing Material Pitch <br />Array 1 6 2x6 Rafter DF#2 | 24" o.c. Asphalt Shingles 14 <br />Array 2 12 2x6 Rafter DF#2 | 24" o.c. Asphalt Shingles 14 <br />ANCHORAGE <br />The solar panel anchorage shall be installed according to the manufacturer's most current installation manual. <br />Anchorage shall be staggered to distribute the load evenly to adjacent roof members. The solar panels should be <br />mounted flush to the roof surface. <br />Array Name Connection Type Fastener Max Anchorage Spacing <br />Array 1 Stronghold <br />5/16” or 18/8 SS lag screw <br />(2.5" embedment) into roof <br />substructure <br />72" <br />Array 2 Stronghold <br />5/16” or 18/8 SS lag screw <br />(2.5" embedment) into roof <br />substructure <br />72" <br />Installation Instructions <br />Solar panels and the equipment shall be installed per the manufacturer's installation specifications. Improper installation <br />will void this certification. Deviations from the approved structural plans (including equipment substitutions) are not <br />allowed without written approval from Right Angle Engineering. Prior to installation, the installer should: <br />· Confirm that the existing structure matches the information provided in the structural survey, the approved <br />installation plans and this certification. <br />· Identify discrepancies between this certification and the approved installation plans. If found, then this <br />certification shall govern. <br />· Identify structural elements that are dangerous (cracked, broken, excessive sag, signs of overstress, rot,decay, <br />fire, water). If found, installation shall cease until those elements are adequately abated and made to comply with <br />the referenced building code. <br />· Provide fire setbacks and access pathways as required by local ordinances <br />581 E Technology Ave, C1500 | Orem, UT 84097 | 925-787-3067 | www.rightangleeng.com | Page 1 of 2 <br />1113 S Shelley St <br />01/25/23