<font face="arial" size="4"><p style="margin:0;padding:0;">i think bob o once said he used ss pop rivets on a job like this.</p>
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<p style="margin:0;padding:0;">todd</p>
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<p style="margin:0;padding:0;">On Thursday, March 15, 2012 9:26am, "lars Ortegren" <lars@cal-solar.com> said:<br /><br /></p>
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<p class="MsoNormal" style="margin:0;padding:0;">Wrenches,</p>
<p class="MsoNormal" style="margin:0;padding:0;">We have a project coming up where we are installing a large array on a low slope metal building with metal purlins. Typically we would through bolt our attachment to the purlins, but in this case the building is a self-storage, and access is not an option. Does anyone out there have experience with any top side only metal-metal attachments? I’ve thought about using some larger sized stainless self-tapping screws, but I worry about the pull out strength (as the roof combined with the c-channel purlins are only about 1/8”) and the effects of heat and cooling of the roof backing the screws out over time. Any thoughts ?</p>
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<p class="MsoNormal" style="margin:0;padding:0;"><strong><em>Lars Ortegren</em></strong></p>
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<p class="MsoNormal" style="margin:0;padding:0;"><span style="font-family: "Bodoni MT","serif";">Director of Operations</span></p>
<p class="MsoNormal" style="margin:0;padding:0;"><span style="font-size: 14.0pt; font-family: "Berlin Sans FB","sans-serif"; color: #002060;">California Solar Electric Company</span></p>
<p class="MsoNormal" style="margin:0;padding:0;">10141 Evening Star Drive, Suite 6</p>
<p class="MsoNormal" style="margin:0;padding:0;">Grass Valley, CA 95945</p>
<p class="MsoNormal" style="margin:0;padding:0;"><a href="http://www.californiasolarco.com/">http://www.californiasolarco.com/</a></p>
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<p class="MsoNormal" style="margin:0;padding:0;">Phone : (530)274-3671</p>
<p class="MsoNormal" style="margin:0;padding:0;">Fax: (530)274-7518</p>
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<p class="MsoNormal" style="margin:0;padding:0;"><strong><em><span style="font-size: 10.0pt; font-family: "Arial Unicode MS","sans-serif";">California C-10 Electical Contractor #779624</span></em></strong></p>
<p class="MsoNormal" style="margin:0;padding:0;"><strong><em><span style="font-size: 10.0pt; font-family: "Arial Unicode MS","sans-serif";">NABCEP Certified PV Installer # 091110-89</span></em></strong></p>
<p class="MsoNormal" style="margin:0;padding:0;"><strong><em><span style="font-size: 10.0pt; font-family: "Arial Unicode MS","sans-serif";">Certified NABCEP Continuing Education Provider</span></em></strong></p>
<p class="MsoNormal" style="margin:0;padding:0;">More about NABCEP:</p>
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<p class="MsoNormal" style="margin:0;padding:0;">http://www.nabcep.org/</p>
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