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© 2024 IronRidge, Inc. XR Flush Mount System Certification - Rev B - 4 <br /> <br /> <br />28357 Industrial Blvd. <br />Hayward, CA 94545 <br />1-800-227-9523 <br />IronRidge.com <br /> <br />Spans for Exposed and Edge Modules <br /> <br />Span values for Exposed and Edge module conditions, as defined below, are included in the attached span tables and <br />shall be used when each condition exists. <br />• A module is defined as Exposed (per Section 29.4.4 of ASCE 7) if the distance from any of its free edges (an <br />edge with no connectivity to other modules) to its facing roof edge (such as eave, ridge, rake, or hip) is greater <br />than 0.5h (h is ASCE defined building height) AND if the distance from the same free edge to any other adjacent <br />array or panel is greater than 4 feet. <br />• A module is defined as an Edge Module when its distance from any side of the module to its facing perimeter roof <br />edge (such as eave, ridge, rake, or hip) is less than 2 times the height of the array (2h2) where h2 is measured <br />from the roof surface to the top surface of the module. <br /> <br />The maximum allowable span for Exposed or Edge modules shall be the lesser of the following two: <br />1. The span value for the Exposed or Edge module condition. <br />2. The span value determined by site wind speed and ground snow load. <br /> <br />The allowable spans and cantilever shall only be applied to the portion of rail directly under Exposed or Edge Modules. <br />Additionally, the shaded cells for the Exposed and Edge module conditions indicate conditions in which UFO Mid Clamp <br />connection capacity is exceeded. If such conditions are encountered, contact techsupport@ironridge.com. <br /> <br /> <br />Prepared By: <br />Matthew S Kuzila, PE & Nancy E Schubert, PE <br />