<div dir="ltr">It is possible according to Weyerhaeuser.<div><br><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 7, 2018 at 12:50 AM, Matthew Sirum <span dir="ltr"><<a href="mailto:matthewsirum@gmail.com" target="_blank">matthewsirum@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings Jerry,<br>
<br>
I believe I remember reading some Trus Joist technical documentation<br>
which indicated no more than one hole should be drilled or lag<br>
screw/bolt driven into any cross sectional area of the top flange. If<br>
using the Quick Mount Q-Base with two lag screws/bolts, will you be<br>
orienting the Q-Base so that the two lags are in line vertically with<br>
each other or side by side?... Seems like side by side (straddling<br>
the web) may not be a good approach. Staggered vertically (straddling<br>
the web) may be alright if the size of the holes and lags are<br>
appropriate for the top flange dimensions and can be installed where<br>
allowed by the rafter/joist manufacturer's specifications.<br>
<br>
I hope you are able to accurately identify the rafter/joist<br>
manufacturer and the rafter/joist model so you can reach out to them<br>
for guidance on what are and are not acceptable attachment methods for<br>
their product.<br>
<br>
Other thoughts:<br>
If access to the underside of the roof structure allows, installing<br>
appropriate blocking with proper hangers and fasteners would likely be<br>
a more robust way to go.<br>
I have looked into using stainless steel j-bolts to hook the underside<br>
of the rafter members in situations like this as well; the rest of the<br>
install from the top side is just like working with hanger bolts.<br>
If the roof decking/sheathing and its attachment fasteners and<br>
schedule are all known and sufficient, a multi-fastener deck mount<br>
type mounting product may possibly be an appropriate and labor/time<br>
saving option.<br>
<br>
Best regards,<br>
<br>
----MATT<br>
<br>
Matthew Sirum<br>
P.O. Box 1227<br>
Greenfield, MA 01302-1227 USA<br>
phone: <a href="tel:%2B1.413.773.0611" value="+14137730611">+1.413.773.0611</a><br>
email: <a href="mailto:MatthewSirum@gmail.com">MatthewSirum@gmail.com</a><br>
<br>
<br>
---------- Original Message Below ----------<br>
<br>
[RE-wrenches] TJI rafters<br>
Jerry Caldwell solarcowboy at <a href="http://yahoo.com" rel="noreferrer" target="_blank">yahoo.com</a><br>
Tue Mar 6 15:57:04 PST 2018<br>
<br>
Bill,<br>
Mineral bitumen roll roofing. 2:12 slope.<br>
Everyone who gave input below, thanks for the suggestions.<br>
I've decided to go with the Quick Mount Q-Base product. It allows you<br>
to get 2 lag bolts into the top chord on either side of the OSB web.<br>
Cheers,Jerry Caldwell<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><span style="background-color:rgb(255,255,255)"><font color="#0b5394"><u style="font-weight:bold">Lorenzo Ortiz Commercial PV Designer</u></font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#0b5394"><u style="font-weight:bold"><br></u></font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#0b5394"><b> </b> <a href="mailto:lorenzo@cal-solar.com" target="_blank">lorenzo@cal-solar.com</a><b> (530) 274-3671</b></font></span></div> <img src="https://docs.google.com/uc?export=download&id=0B6l5VcsZgAv3TXRfSkhpZUNaczQ&revid=0B6l5VcsZgAv3djFpMk9EQUdEdmg1K0hFdHBNZVlTZ3RZdW5VPQ"><br><div><br></div></div></div></div></div></div></div></div></div></div></div>
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