[RE-wrenches] TJI rafters

Thu Mar 8 12:55:33 EST 2018

 Thanks Bill,
The Quick Mount QBase product comes with two 3"x5/16" lag bolts. I plan on using those.
Best,Jerry Caldwell

    On Tuesday, March 6, 2018, 7:27:21 PM PST, frenergy <frenergy at psln.com> wrote:  

Jerry,

            The only thing I feel compelled to add with your decision would be dang sure to pre-drill AND I sure wouldn't be putting a 3/8" lag into a TJI flange, maybe 1/4" Simpson lags? or tech screws?

Bill

Feather River Solar Electric

 On 3/6/2018 3:57 PM, Jerry Caldwell wrote:

  Bill, 
  Mineral bitumen roll roofing. 2:12 slope. 
  Everyone who gave input below, thanks for the suggestions. 
  I've decided to go with the Quick Mount Q-Base product. It allows you to get 2 lag bolts into the top chord on either side of the OSB web. 
  Cheers, Jerry Caldwell

     On Sunday, March 4, 2018, 1:19:51 PM PST, Chris Worcester <chris at solarwindworks.com> wrote:  

     We've done roof mount pv on tji's. Our engineer required 4x blocking installed between the tji rafters that we lag bolted into. You're not allowed to cut or drill/bolt into the top and bottom cords of the tji's. We also packed out both sides of the tji plywood webbing prior to installing the blocking. Our snow loads oftentimes are too high and won't allow me to screw into the plywood roof deck  only.  

    Chris Worcester  chris at solarwindworks.com  530-448-9692 on my Samsung Galaxy S7. 
    -------- Original message -------- From: Aaron Mandelkorn <reosolar at gmail.com>  Date: 3/4/18 6:44 AM (GMT-08:00)  To: RE-wrenches <re-wrenches at lists.re-wrenches.org>  Subject: Re: [RE-wrenches] TJI rafters  
   I have also used the sunmoto mounts with the multiple holes. They are called the AL shoe I believe.  It makes a great alternative to the DPW ez foot which are very expensive and take forever to receive.  We but butal mastic tape on the back.  Just like the ez foot.  

 Aaron Mandelkorn
 President / Founder
 Renewable Energy Outfitters
 www.reosolar.com
 Off Grid Depot
 www.offgridnow.com
 970-596-3744

 On Mar 3, 2018 5:54 PM, "August Goers" <august at luminalt.com> wrote:

 Hi All - We tie into TJIs commonly, if you Google "TJI solar" you'll find manufacturer docs on how to properly lag in.  
  August  
 On Mar 2, 2018 1:24 PM, "Jerry Caldwell" <solarcowboy at yahoo.com> wrote:

   Dear Wrenches, 
  I have a customer with a low slope roof supported by TJI beams. Does anyone have experience  permitting and installing on TJIs? I'm curious if jurisdictions are requiring Structural Engineer stamps.  
  Since the top chord of the beams is only 1 3/8" thick should we be using shorter lag bolts for  these installations? It also seems that it would be undesirable to penetrate into the web of the beam. 
  Any advice would be appreciated here. 
  Thank you, 
  Jerry Caldwell

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 -- 
Feather River Solar Electric            
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net 

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