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© 2024 IronRidge, Inc. XR Flush Mount System Certification - 1 <br />28357 Industrial Blvd. <br />Hayward, CA 94545 <br />1-800-227-9523 <br />IronRidge.com <br />Attn: Sean McDonald, CEO, IronRidge Inc. <br />Date: October 21st 2024 <br />Re: Report #7.16 XR10: Engineering Certification and Span Tables for the IronRidge XR10 Rail Flush Mount <br />System, for Gable and Hip roofs. <br />This letter certifies the loading criteria and design basis used for the structural analysis of the IronRidge XR System as <br />shown in Report # 7.16 XR10 "Engineering Certification and Span Tables for the IronRidge XR10 Rail Flush Mount <br />System, for Gable and Hip roofs Rev B". All information, data, and analysis therein are based on, and comply with, the <br />following building codes and typical specifications. The Span Tables provided in the referenced report may be used when <br />all conditions of the design criteria provided therein are met. Requirements for loading conditions that are not certified in <br />this letter can be determined by using the online Design Assistant at IronRidge.com. <br />Building Codes: <br />1.ASCE/SEI 7-16, Minimum Design Loads for Buildings and Other Structures, by American Society of Civil <br />Engineers <br />2.2022 California Building Code <br />3.AC428, Acceptance Criteria for Modular Framing Systems Used to Support Photovoltaic (PV) Panels, <br />November 1, 2012 by ICC-ES <br />4.Aluminum Design Manual 2020, by The Aluminum Association, Inc. <br />5.SEAOC (Structural Engineers Association of California) report PV2-2017 Wind Design for Solar Arrays <br />Please note our evaluation only applies to IronRidge products and excludes the structural adequacy of the chosen roof <br />attachments, PV modules, or underlying roof supporting members. It shall be the responsibility of the installer or system <br />designer to verify the structural capacity and adequacy of the referenced system components with respect to the applied <br />or resultant loads of the chosen array configuration. <br />Sincerely, <br />Matthew S Kuzila, P.E. <br />12.31.2025