TGI Joists

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Scott haggarty - 28 Feb 2005 06:37 GMT

Can anybody tell me the difference between TGI and TJI joists. (or is it
just brand names) and has there been fire tests on TGI or TJI joists.
Thanks

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BP - 28 Feb 2005 13:36 GMT

Just brand names.
Anecdotally: they burn like kindling.

> Can anybody tell me the difference between TGI and TJI joists. (or is it
> just brand names) and has there been fire tests on TGI or TJI joists.
> Thanks

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Scott haggarty - 28 Feb 2005 15:03 GMT

I am a fire fighter, We have changed our tactics since TGI's came out. I
am giving a lecture on TGI's on the weekend, and am looking for more info.

Thanks for your post!!

Scott

> Just brand names.
> Anecdotally: they burn like kindling.
>
>> Can anybody tell me the difference between TGI and TJI joists. (or is it
>> just brand names) and has there been fire tests on TGI or TJI joists.
>> Thanks

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Bob Morrison - 28 Feb 2005 15:47 GMT

In a previous post Scott haggarty says...

> Can anybody tell me the difference between TGI and TJI joists. (or is it
> just brand names) and has there been fire tests on TGI or TJI joists.

"TGI" is an incorrect name. The product is made by Georgia-Pacific.
They have two models "GPI" and WI"

"TJI" is a trade name of Trus-Joist, a division of Weyerhaeuser.

The products are similar but not the same.

ICC Report ESR-1153 deals with fire resistance of TJI's and provides
both one-hour and two-hour fire resistive assemblies.

http://www.trusjoist.com/PDFFiles/Code_PDFs/ESR-1153.pdf

Signature

Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA

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tbasc@bellsouth.net - 28 Feb 2005 19:53 GMT

What is an appropriate generic name for these members?

I did a search for TGI, and found the term used in a lot of places,
mostly housing related.

Tom Baker

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Bob Morrison - 28 Feb 2005 21:06 GMT

In a previous post says...

> What is an appropriate generic name for these members?
>
> I did a search for TGI, and found the term used in a lot of places,
> mostly housing related.

Tom:

The appropriate generic names are "I-Joists" for the joist material and
"engineered lumber" for the rectangular sections.

There are several types of "engineered lumber": LVL (laminated veneer
lumber), LSL (laminated strand lumber) and PSL (parallel strand lumber).

Signature

Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA

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Guv Bob - 28 Feb 2005 23:03 GMT

> In a previous post says...
> > What is an appropriate generic name for these members?
[quoted text clipped - 9 lines]
> There are several types of "engineered lumber": LVL (laminated veneer
> lumber), LSL (laminated strand lumber) and PSL (parallel strand lumber).

I agree with Bob.

Guv Bob

"charlie" to a
"dick" to e
"is a big old" to i
"goofy" to o
"buffoon" to u

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BP - 28 Feb 2005 21:12 GMT

> What is an appropriate generic name for these members?

Wood I-joists.

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Homeowner Forum / Construction / February 2005

TGI Joists