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February 10, 2023 <br />SunPower <br />77 Rio Robles <br />San Jose, CA 95134 <br />TEL: (408) 514-4063 <br />Attn: Sunpower – Engineering Department <br />Re: Engineering Certification for the SunPower Corporation Invisimount Mounting System Span Tables and <br />Design Methodology <br />PZSE, Inc.-Structural Engineers has reviewed the SunPower Invisimount Mounting System Span Tables Revision <br />F published September 21, 2021 and Revision G published August 25, 2022 and their design methodology. This <br />certification covers the module clamp, rail analysis, and attachment Tile hook/L bracket components. All <br />information, data and analysis contained within are based on, and comply with, the following building codes <br />and typical specifications: <br />Building Codes: <br />1. Minimum Design Loads for Buildings and other Structures, ASCE/SEI 7-16 <br />2. 2022 California Building Code, by California Building Standard Commission <br />3. 2022 California Residential Code, by California Building Standard Commission <br />4. 2021 International Building Code, by International Code Council, Inc <br />5. 2015 Aluminum Design Manual, by The Aluminum Association <br />6. CPP Wind Tunnel report number 9790, dated 16 February 2017. <br />7. SEAOC PV-2, 2017 <br />8. 2018 NDS, by the American Wood Council <br />9. UL 2703 Testing report for PV solar panels. <br />10. AC428, Acceptance Criteria for Modular Framing Systems Used to Support Photovoltaic (PV) <br />Panels, November 1, 2012 by ICC-ES <br />Component and Cladding Roof Zones: <br />The Components and Cladding Roof Zones shall be determined based on ASCE 7 Chapter 30, and CPP Wind <br />Tunnel test number 9790, dated 16 February 2017. <br />Notes: <br />1) Racking system and panels shall be installed per manufacturer’s specifications. <br /> 2) Design assumptions are specified in the Inputs pages of attached span tables. <br />3) Attachment design is based on 5/16” Dia. Lag Screw with 2.5” Embedment into SPF#2 <br />or equivalent per NDS. Designer shall be responsible for verifying project specific site <br />conditions. <br />4) Wind speeds are LRFD values. <br />5) Attachment spacing(s) apply to seismic design category E or less. <br />939 W <br />Ln07/19/23