Gable end frame details
Gable end frame details
(OP)
Single story building, masonry walls and pre-fab wood trusses at the roof. Do you conventionally include a detail/section of how the gable end frame is to be connected to the rest of the trusses or is it not a consideration at all? In my case, I don't have a ceiling so the bottom chord of the truss/top of the wall under the gable end is not braced. I am considering putting a note to provide bottom chord bridging at 4' oc . Not sure if that's an efficient approach though.






RE: Gable end frame details
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Gable end frame details
RE: Gable end frame details
http://www.eng-tips.com/viewthread.cfm?qid=340185
Although the materials are different, the question is still the same.
RE: Gable end frame details
http://www.pinellascounty.org/build/retrofit.htm
http://www.youtube.com/watch?v=SrYL2ooCOxA
RE: Gable end frame details
RE: Gable end frame details
What I am thinking of doing is this: Create a section showing T&B 2x4 blocking extending to at least 5 trusses. Blocking is @ every other vertical or 4' oc, whichever is smaller. Each segment of the top blocking will also be nailed to roof diaphragm with (4) 8ds. The bottom blocking will be continuous 12' long, connected with (2) 1/4 screws at each truss. I am also going to put a note on the detail for the truss mnfr to design for wind of 25 psf perpendicular to the face of the truss, this way I don't have to worry about nailing scabs to the vertical members.
Also, here is another useful link:
http://www.structuremag.org/article.aspx?articleid...
RE: Gable end frame details
When I was building homes, (nail banger, not designer) I set the last truss in the width of the wall from the end and framed the gable end in 2x4 or 2x6 like the wall below. Setting the last truss (normal truss, not gable) in it could be used as a nailer on the inside. The gable end was then nice and straight (flat) and could span the height of the gable to the roof diaphragm and to the ceiling diaphragm.
I also would keep the gable wall down the height of the truss top chord and this would allow me to do a "Drop gable" type eave or overhang.
Much cleaner and more robust, though surely more $$$