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<br /> <br /> <br />Oct 20th, 2023 <br /> <br />RE: Samueli Academy Bldg A / B / E / E-5D /F <br />plan check comments <br /> <br />To whom it concerns, <br />PanelClaw, Inc. <br />1600 Osgood Street, Suite 2023 <br />North Andover, MA 01845 <br /> <br />Tel +1 (978) 688.4900 <br />Fax +1 (978) 688.5100 <br />www.panelclaw.com <br /> <br />You have brought to our attention a few items with respect to the above referenced rooftop solar arrays. Below <br />are the issues as we understand them followed by our response. This does not address all items in the review <br />but only the ones that apply to PanelClaw. Other parties will need to address the other items. <br /> <br />Comments: <br /> <br />PC Response: <br /> Per ASCE 7-16 Section 31.6.1 Wind Tunnel Test Requirements, Wind loads on roof-mounted solar <br />collectors with roof slope less than 7 degrees are permitted to be determined by wind tunnel tests as <br />generic loads applicable to a range of buildings, by determining load coefficients for use in the analysis <br />equations of the Directional Procedure in Chapters 27 and 29 for MWFRS and in Part 5 of Chapter 30 <br />for C&C. <br /> Testing to determine wind loads on the PanelClaw 10° or 5° south-facing roof mount solar racking <br />system was performed in a CPP boundary layer wind tunnel. Reports for the Wind Tunnel Test were <br />already attached at the end of each calculation set. <br /> The load calculation was finished by an online layout and calculation tool called WindLab which is The <br />CPP PROPRIETARY SOFTWARE that uses this analytical model and allows application of the model on <br />any flat roof. WindLab incorporates the variation of loads across the roof as described above, and <br />allows them to be applied on any size roof or array. <br /> The load calculation result with detailed DL and Mechanical Attachment to resist uplift at <br />module/panel level are attached to this response letter. The standard submittal calculation set shows <br />Array level summarized results which is aligned with these attached calculations. <br /> Per ASCE 7-16 Section 31.6.1.2 Peer Review Requirements for Wind Tunnel Studies of Roof-Mounted <br />Solar Collectors. The peer reviewer shall submit a written report to the Authority Having Jurisdiction. <br /> These reports were peer reviewed by Gregory A. Kopp, PhD, PEng. who is currently Chair of the ASCE <br />49 Standards Committee Wind Tunnel Testing for Buildings and other Structures. See the attached <br />peer review report. <br /> <br />Comments: <br /> <br />PCC2.2.1 <br />1901 N Fairview St & Bldg A, B, <br />C, F & 1919 N Fairview St Bldg E <br />4/11/2024