<div dir="auto">We use Marutex screws on steel pipe purlins in the Bahamas. They are expensive but the strongest available screw that I know of, particularly good in hurricane territory and their molybdenum/stainless composition does not corrode.<div dir="auto">The last one we completed used Snap n Rack corrugated metal roofing attachments (single screw per attachment) and 2.5" Marutex 5/15 hex head screws (about $1.25 each) and attachment points every 48", totaling 820 screws, but has held up very well in some high winds, so far.</div><div dir="auto"><br></div><div dir="auto">Daryl</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 3, 2024, 7:47\u202fPM Jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="ltr"></div><div dir="ltr">If your looking to fasten into the steel pipe you look at </div><div dir="ltr"><br></div><div dir="ltr">Dynamicfasteners.com</div><div dir="ltr"><br></div><div dir="ltr">Great products</div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr"><br><blockquote type="cite">On Apr 3, 2024, at 5:34\u202fPM, david quattro via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="ltr">because it is an awning seems like you may be able to disturb the roof layer above the purlins, even if temporarily?<div>If so then i think an Iron Ridge top cap could be turned upside down. you can fasten the Ubolts around the purlins</div><div>maybe overkill and also maybe hard to waterproof, if waterproof is something they need </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 3, 2024 at 3:59\u202fPM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div lang="EN-US"><div><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">Colleagues:</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">I have been asked to bid on installation of PV on a steel barn. The mounting area is an awning with steel pipe purlins. See photo below of a section of the plans.</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""><img width="1660" height="478" id="m_2353922208644973961m_-6771240444642644710Picture_x0020_1"></span><span style="font-size:12pt;font-family:Verdana,"sans-serif""></span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">I have mounted racking to a lot of different steel structures, but never one with steel pipe purlins. I would normally use the EJOTs with thread forming shanks, but I don\u2019t know how well they will work in steel pipe.</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">Has anyone else ever faced this situation?</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">Any help is appreciated.</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">William Miller</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">Miller Solar</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">805-438-5600</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif""><a href="http://www.millersolar.com/" target="_blank" rel="noreferrer">www.millersolar.com</a></span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">CA Lic. 773985</span></p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div></div>
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