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Tech Brief <br />Solar Is Not Always Sunny <br />Over their lifetime, solar panels experience countless <br />extreme weather events. Not just the worst storms in years, <br />but the worst storms in 40 years. High winds capable of <br />ripping panels from a roof, and snowfalls weighing <br />enough to buckle a panel frame. <br />XR Rails are the structural backbone preventing <br />these results. They resist uplift, protect <br />DJDLQVWEXFNOLQJDQGVDIHO\DQGHIFLHQWO\ <br />transfer loads into the building structure. <br />Their superior spanning capability <br />requires fewer roof attachments, <br />reducing the number of roof <br />penetrations and the amount <br />of installation time. <br />XR Rail Family <br />Force-Stabilizing Curve <br />Sloped roofs generate both vertical and lateral <br />forces on mounting rails which can cause them <br />to bend and twist. The curved shape of XR Rails <br />is specially designed to increase strength in both <br />directions while resisting the twisting. This unique <br />feature ensures greater security during extreme <br />weather and a longer system lifetime. <br />Compatible with Flat & Pitched Roofs <br />Roof Mount utilizes XR <br />Rails, along with optional <br />all-in-one attachments, <br />WRVHFXUHV\VWHPVXVK <br />against residential roofs. <br />Roof Mount utilizes XR <br />Rails, along with optional <br />all-in-one attachments, <br />WRVHFXUHV\VWHPVXVK <br />against residential roofs. <br />Corrosion-Resistant Materials <br />XR Rails are <br />compatible with <br />FlashFoot and <br />other pitched roof <br />attachments. <br />IronRidge offers <br />a range of tilt leg <br />RSWLRQVIRUDW <br />roof mounting <br />applications. <br />All XR Rails are made of marine-grade <br />aluminum alloy, then protected with an <br />DQRGL]HGQLVK$QRGL]LQJSUHYHQWVVXUIDFH <br />and structural corrosion, while also providing <br />a more attractive appearance. <br />XR Rail Family <br />7KH;55DLO)DPLO\RIIHUVWKHVWUHQJWKRIDFXUYHGUDLOLQWKUHHWDUJHWHGVL]HV(DFKVL]HVXSSRUWVVSHFLF <br />design loads, while minimizing material costs. Depending on your location, there is an XR Rail to match. <br /> © 2014 IronRidge, Inc. All rights reserved. Visit www.ironridge.com or call 1-800-227-9523 for more information. Version 1.10 <br />Tech Brief <br />Rail Selection <br />The following table was prepared in compliance with applicable engineering codes and standards. Values are <br />based on the following criteria: ASCE 7-10, Roof Zone 1, Exposure B, Roof Slope of 7 to 27 degrees and Mean <br />%XLOGLQJ+HLJKWRIIW9LVLW,URQ5LGJHFRPIRUGHWDLOHGVSDQWDEOHVDQGFHUWLFDWLRQV <br />Load Rail Span <br />Snow (PSF) Wind (MPH) 4’5’ 4” 6’ 8’ 10’ 12’ <br />None <br />100 <br />120 <br />140 XR10 XR100 XR1000 <br />160 <br />10-20 <br />100 <br />120 <br />140 <br />160 <br />30 <br />100 <br />160 <br />40 <br />100 <br />160 <br />50-70 160 <br />80-90 160 <br />XR100 <br />XR100 is the ultimate residential <br />mounting rail. It supports a range of <br />wind and snow conditions, while also <br />maximizing spans. <br />• 8’ spanning capability <br />• Heavy load capability <br />• &OHDU EODFNDQRGL]HGQLVK <br />• Internal splices available <br />XR10 <br />;5LVDVOHHNORZSUROHPRXQWLQJ <br />rail, perfectly matched to regions <br />without snow. It achieves 6 foot spans, <br />while also staying light and economical. <br />• 6’ spanning capability <br />• Moderate load capability <br />• &OHDUDQRGL]HGQLVK <br />• Internal splices available <br />XR1000 <br />XR1000 is a heavyweight among <br />solar mounting rails. It’s built to handle <br />extreme climates and spans 12 feet or <br />more for commercial applications. <br />• 12’ spanning capability <br />• Extreme load capability <br />• &OHDUDQRGL]HGQLVK <br />• Internal splices available <br />1043 W Fairbrook <br />Ln05/19/23