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i 1495 Zephyr Avenue ;1495 Zephyr Avenue <br /> M IRONRIDGE IHayward,CA94544 AIRONRIDGE IHeyward,CA94544 <br /> 1-800-227-9523 ' <br /> .u.,. 1-800.227-9523 <br /> 1 <br /> i IronRidge.com i IronRidge.com <br /> Attn:Corey Geiger,VP New Markets,IronRidge Inc. The span tables provided in this letter are certified based on the structural performance of IronRidge XR Rails only with no <br /> Date:December 2011,2017 consideration of the structural adequacy of the chosen roof attachments,PV modules,or the underlying roof supporting <br /> members. It is the responsibility of the installer or system designer to verify the structural capacity and adequacy of the <br /> Re:Structural Certification and Span Tables for IronRidge Flush Mount System aforementioned system components in regards to the applied or resultant loads of any chosen array configuration. <br /> This letter addresses the structural performance and code compliance of IronRidge's Flush Mount System. The Flush 'jjltfl rrtr <br /> Mount System is a proprietary rooftop mounting system used to support photovoltaic(PV)modules installed in portrait or Sincerely, <br /> landscape orientation and set parallel to the underlying roof surface. PV modules are supported by extruded aluminum ` L.)VHF <br /> XR Rails and secured to the rails with IronRidge mounting clamps. The XR Rails are side mounted to a selected roof <br /> No C(,.,)) <br /> attachment with 3/8"stainless steel bonding hardware and then attached directly to the roof structure or to a stanchion <br /> that is fastened to the underlying roof structure. Assembly details of a typical Flush Mount installation and its core <br /> components are shown in Exhibit EX-0015. E 1 f j <br /> The IronRidge Flush Mount System is designed and certified to the structural requirements of the following reference ,�S"S,;••. ...• `.;_+`�. ` fy,pj7 <br /> standards for the load conditions and configurations tabulated in the attached span tables: Gang Xuan,PE,LEED AP 'r0vlri 1-rtiti`,� <br /> Senior Structural Engineer <br /> . ASCE/SEI 7-10 Minimum Design Loads for Buildings and Other Structures(ASCE 7-10) <br /> . 2015 International Building Code(I13620115) <br /> . Florida Building Code 610 Edition(2017)Building <br /> . 2015 Aluminum Design Manual(ADM-2015) <br /> The tables included in this letter provide the maximum allowable spans of XR Rails in the Flush Mount System for the <br /> respective loads and configurations listed,covering wind exposure categories B,C,&D,roof zones 1,2&3,and roof <br /> slopes from 00 to 450. The span tables are applicable provided that the following conditions are met: <br /> 1. Span is the distance between two adjacent roof attachment points(measured at the center of the attachment <br /> fastener) <br /> 2. The underlying roof pitch,measured between roof surface and horizontal plane,is 45°or less. <br /> i <br /> 3. The mean roofheight,defined as the average of the roof eave height and the roof ridge height measured from <br /> grade,does not exceed 30 feet. <br /> 4. Module length shall not exceed the listed maximum dimension provided for the respective span table and module <br /> width shall not exceed 40". <br /> 5. All Flush Mount components shall be installed in a professional workmanlike manner per IronRidge's Flush Mount <br /> installation manual and other applicable standards for general roof construction practice. <br /> r <br /> i <br /> i <br /> I <br /> ( <br /> I <br /> I <br /> 0 2017 lronRidge,Inc. FL Flush Mount System Certification Letter-1 r,2017 IronRidge,Inc. FL Flush Mount System Certification Letter-3 <br />