1990 - 1992 TJI Tapered Roof Joist Catalog
1990 - 1992 TJI Tapered Roof Joist Catalog
(OP)
Does anyone have one of these joist catalogues that they can post?
I have a project where these joists are existing in the roof structure, and I need to know their capacities. The owner wants to expand a deck area to the roof. The joists are typically 14" minimum X 20" deep max, with varying flange sizes and types, and plywood webs of 3/8" and 15/32" thickness.
RedBuilt currently owns the rights to these joists, but has not saved the catalogues of the era. I threw mine out a few years ago and am kicking myself right now.
Redbuilt has told me just to go by the least depth and increase the value by 25% for the maximum moment capacity. That seems pretty slight of the hand to me.
Thanks.
I have a project where these joists are existing in the roof structure, and I need to know their capacities. The owner wants to expand a deck area to the roof. The joists are typically 14" minimum X 20" deep max, with varying flange sizes and types, and plywood webs of 3/8" and 15/32" thickness.
RedBuilt currently owns the rights to these joists, but has not saved the catalogues of the era. I threw mine out a few years ago and am kicking myself right now.
Redbuilt has told me just to go by the least depth and increase the value by 25% for the maximum moment capacity. That seems pretty slight of the hand to me.
Thanks.
Mike McCann, PE, SE (WA)






RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
I would just feel more confident on the listed capacities rather than computed ones.
Mike McCann, PE, SE (WA)
RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
I don't recall ever seeing them for Ijoists; and pretty much like KootK took midspan depth moment capacity plus a few percent wingage to account for joist tapering a little faster at the start than the moment diagram.
good luck
RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
Still looking... Thanks.
Mike McCann, PE, SE (WA)
RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
1992 TJI DF from Google
RE: 1990 - 1992 TJI Tapered Roof Joist Catalog
TJI/25
TJI/35X
TJI/55