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11495 Zephyr Avenue <br /> I 4544 <br /> 5 Zephyr <br /> Ave <br /> nue <br /> t�_ IRONRIDGE !Hayward CA 94544 IRONryI GE I'llayward,CA <br /> 1-)00.227-9523 1-800. 23 <br /> IronRidge.com 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 20t',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 ��11te1retrrrrrr <br /> Mount System is a proprietary rooftop mounting system used to support photovoltaic(PV)modules installed in portrait or Sincerely, ,,��`t-;;P1Ci ;;L q�✓'err�J <br /> landscape orientation and set parallel to the underlying roof surface. PV modules are supported by extruded aluminum G[.r�<:•. <br /> XR Rails and secured to the rails with IronRidge mounting clamps. The XR Rails are side mounted to a selected roof R V !' <br /> • No u'iD9 •'.'�'=• <br /> attachment with 3l8"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 -7� <br /> components are shown in Exhibit EX-0015. / ,,A1L GrpThe c <br /> st ndardstdge Flush Mount System is designed and certified t the stctural for the load conditions and configurations tabulated on the attached span tables: <br /> of the following reference !� s,�rONAL���. <br /> Gang Xuan,PE,LEED AP rrneurni` <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(IBC-2015) <br /> Florida Building Code V 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 01 to 45°. 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 451 or less. <br /> 3. The mean roof height,defined as the average of the roof eave height and the roof ridge height measured from <br /> grade,does not exceed 30 feet. i <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 /> i <br /> F <br /> t <br /> ©2017 IronRidge,Inc. FL Flush Mount System Certification Letter-1 C�2017 IronRidge,Inc. FL Flush Mount System Certification Letter-3 <br />