Diaphragm Force Transfer At Roof Valley
Diaphragm Force Transfer At Roof Valley
(OP)
I have a question about diaphragm load transfer that I am hoping someone can help me with. I am working on a wood framed building that has a gable roof coming in perpendicular to another gable roof (see sketch). I don't have any lateral resisting system in the portion of the building that is below the perpendicular gable roof due to wall openings. I am wondering if it is possible to transfer the diaphragm forces through the valley of where the two roofs meet so that I can use the lateral force resisting system of that portion of the building. Was thinking something maybe like Simpson coil straps evenly spaced along the valley?






RE: Diaphragm Force Transfer At Roof Valley
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: Diaphragm Force Transfer At Roof Valley
Mike McCann, PE, SE (WA)
RE: Diaphragm Force Transfer At Roof Valley
I am wondering what happens if the length of the bumpout decreases to a point where there isn't the minnimum 3:1 ratio needed for a roof diaphragm. In that case I assume you can't figure the load is going to get out to the sill plates to be transferred to the main roof can you?
RE: Diaphragm Force Transfer At Roof Valley
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.