<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">You might want to look at EcoFasten base plates fastened into the sheathing with eight fasteners per. Flashing around the pedestals is pretty easy on a TPO roof, but the boots require about 8" to properly flash. We've done this with the base plate on DensDeck, but the fasteners went through insulation and into a 24ga metal roof. I'm not sure how the pull out of OSB would change the calculations, but our spacing was 48 inches here with 160 mph design wind speeds in Zone 1.</div>
<br><br><div id="WISESTAMP_SIG_gmail_session"><div style="font-size:13px;font-family:Verdana,Arial,Helvetica,sans-serif"><div style="margin:0 0 8px 0"><p style="margin:0"><span><span>Jason Szumlanski</span></span></p><p style="margin:0">
<span><span></span></span></p><div class="gmail_default" style="font-family:verdana,sans-serif;display:inline">Fafco Solar</div><br><p></p><div style="clear:both"></div></div><img src="https://wisestamp.appspot.com/pixview.gif?p=chrome&v=3.20.0&t=1385414284536&u=ce9344a8140ce271" width="1" height="1"></div>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 25, 2013 at 3:58 PM, Carl Adams <span dir="ltr"><<a href="mailto:swingjunkie@gmail.com" target="_blank">swingjunkie@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello Wrenches,<div><br></div><div>I am looking at a new construction project where the roof will be 5 degree pitch, 5/8" OSB on top of TJI (truss joists). I am not sure the TJI will support a lag attachment, as we would use with a conventional wood frame trusses. </div>
<div><br></div><div>Have any of you run into this, and if so what attachment method did you use. </div><div><br></div><div>I have attached tow pictures. One of a similar low slope roof which appears to use Pro Solar rails and perhaps the Pro Solar Fast Jack E-series. I'm not sure a single lag would work with the TJI. The other attached picture is of the TJI. Looking at this amkes me think another connection method might be a better choice.</div>
<div><br></div><div>With Regards</div><div>Carl Adams NABCEP 031508-1</div><div>SunRock Solar</div></div>
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