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Page 2 of 2 <br /> B. Solar Panel Anchorage <br /> 1. The solar panels shall be mounted in accordance with the most recent "Ecofasten Installation <br /> Manual', which can be found on the Ecofasten website (htip://ecofasten.com)). If during solar panel <br /> installation, the roof framing members appear unstable or deflect non-uniformly, our office should <br /> be notified before proceeding with the installation. <br /> 2. Maximum allowable pullout per lag screw is 235 Ibs/inch of penetration as identified in the National <br /> Design Standards (NDS) of timber construction specifications for Doug-Fir (North Lumber) <br /> assumed. Based on our evaluation, the pullout value, utilizing a penetration depth of 2 Y2', is less <br /> than what is allowable per connection and therefore is adequate. Based on the variable factors for <br /> the existing roof framing and installation tolerances, .using a thread depth of 2 %" with a minimum <br /> size of 5/16" lag screw per attachment point for panel anchor mounts should be adequate with a <br /> sufficient factor of safety. <br /> 3. Considering the roof slopes, the size, spacing, condition of roof, the panel supports shall be placed <br /> no greater than 48" o/c. <br /> 4. Panel supports connections shall be staggered to distribute load to adjacent trusses. <br /> Based on the above evaluation, it is the opinion;of this office that with appropriate panel anchors being utilized <br /> the roof system will adequately support the additional loading imposed by the solar panels. This evaluation is in <br /> conformance with the FBC 2017, 6th Edition, current industry and standards, and based on information <br /> supplied to us at the time of this report. <br /> Should you have any questions regarding the above or if you require further information do not hesitate to <br /> contact me. <br /> A--- <br /> uly yours, <br /> r . <br /> Scott E.Wyssli , PE <br /> Florida License No. <br /> W YS <br /> cEN <br /> N <br /> ST OF <br /> NA <br /> TV$:ONSIULT'= <br />