HumbleChief Posted August 30, 2018 Share Posted August 30, 2018 Seems like a weird question but I can't find a table for TJI's as ceiling joists, only floor and roof. Anyone with any experience with same? Thanks Link to comment Share on other sites More sharing options...
Joe_Carrick Posted August 30, 2018 Share Posted August 30, 2018 What is your span and loading. I can run it thru Strucalc. Link to comment Share on other sites More sharing options...
HumbleChief Posted August 30, 2018 Author Share Posted August 30, 2018 On 8/30/2018 at 3:57 PM, Joe_Carrick said: What is your span and loading. I can run it thru Strucalc. Expand Thanks Joe but really only need a simple span table that I can refer to. Span is 20 ft but I think as soon as I add any kind of calc I suspect I'll need to justify the load/span as you suggest. Just can't find a TJI span table for ceiling joists. San Diego County span tables show 2 x 8's will work but we'd like to use TJI's without having to calc the span. Funny I've never run in to this before..Thanks again Link to comment Share on other sites More sharing options...
Joe_Carrick Posted August 30, 2018 Share Posted August 30, 2018 Here you go. Note however that this is to support attic floor loads as well - it's overkill. TB-824.pdfFetching info... Link to comment Share on other sites More sharing options...
HumbleChief Posted August 30, 2018 Author Share Posted August 30, 2018 THANK YOU JOE - looked for something like that all morning!! Over and above - really appreciate it! Link to comment Share on other sites More sharing options...
Joe_Carrick Posted August 30, 2018 Share Posted August 30, 2018 On 8/30/2018 at 4:46 PM, HumbleChief said: THANK YOU JOE - looked for something like that all morning!! Over and above - really appreciate it! Expand I just googled "tji ceiling joists" Link to comment Share on other sites More sharing options...
HumbleChief Posted August 30, 2018 Author Share Posted August 30, 2018 On 8/30/2018 at 5:17 PM, Joe_Carrick said: I just googled "tji ceiling joists" Expand Well you know how that goes when someone else googles what you googled all morning - piece of cake. It's like having the wife finding the tool you misplaced, even when it's right in front of your face...but thanks again... Link to comment Share on other sites More sharing options...
wjmdes Posted August 31, 2018 Share Posted August 31, 2018 Got this from TJI Link to comment Share on other sites More sharing options...
AvoyeDesign Posted August 31, 2018 Share Posted August 31, 2018 Does the manufacturer of the joists you are using have any software tools for this? I use Forte software for checking the spans of Weyerhauser engineered products before I send my plans to the engineer. Your brand might have something similar? Link to comment Share on other sites More sharing options...
HumbleChief Posted August 31, 2018 Author Share Posted August 31, 2018 Thank Bill, Thanks Kevin Rod, The link that Joe provided and that Bill posted a pic of will work great for my purposes - assuming that the TJI company has already done the necessary calcs.. Link to comment Share on other sites More sharing options...
JJohnson Posted August 31, 2018 Share Posted August 31, 2018 A good thing about using truss joists rather than solid lumber is that you may cut very large holes through the web, mid span, which allows running ducting etc. Link to comment Share on other sites More sharing options...
HumbleChief Posted August 31, 2018 Author Share Posted August 31, 2018 On 8/31/2018 at 6:15 PM, JJohnson said: A good thing about using truss joists rather than solid lumber is that you may cut very large holes through the web, mid span, which allows running ducting etc. Expand ... and they are straight too. Link to comment Share on other sites More sharing options...
AvoyeDesign Posted August 31, 2018 Share Posted August 31, 2018 On 8/31/2018 at 6:15 PM, JJohnson said: A good thing about using truss joists rather than solid lumber is that you may cut very large holes through the web, mid span, which allows running ducting etc. Expand The not so good thing is that they cost a whole lot more around here than 2x10's. I uesd to design homes with TJI's all the time, but that was in northern BC where there was a lot of oil money and big homes. Now on Vancouver Island I'm dealing with much more limited budgets and smaller homes, and 2x10's are just the standard go-to. Link to comment Share on other sites More sharing options...
Jay_on_Cape Posted August 31, 2018 Share Posted August 31, 2018 Biggest advantage of I-joists is warranty call backs. I-joists don't shrink. The lumber yard most of my builders use pre-cuts the entire floor package. Everything is cut and labeled. The framers just have to cut rimboard. Link to comment Share on other sites More sharing options...
CARMELHILL Posted September 1, 2018 Share Posted September 1, 2018 Squeezing the ceiling joists into the space at the birds mouth can be tricky too. If you cut away too much off the top of the TJI because your roof rafters are smaller than the ceiling joists, you need to reinforce it with squash blocks nailed to the web. Make sure you check your section/detail at that connection. Link to comment Share on other sites More sharing options...
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