wood moment frame
wood moment frame
(OP)
I did a search on this forum and I see that there has been some discussion on wood moment frames (2x4s, headers, OSB). In general I read on this forum and in Breyer's book that wood moment frames are a bad idea. I have seen the APA portal detail which if I'm not mistaken is basically a wood moment frame. From the research/testing done it looks like the APA portal frame works well. I can't find any resources with design guidelines and examples for a wood moment frame. The APA just gives the details on it, no design guide for it. Do you guys know of any design aid resources for wood moment frames? Why is a wood moment frame such a bad idea? Is a timber frame (post and beam) capable of becoming a moment frame with steel connections, if so do you know of any design aids for that?
Thanks in advance.
Thanks in advance.






RE: wood moment frame
csd
RE: wood moment frame
I beleive APA came up with the idea and then just tested it. While not a perfect connection - it works well enough for the purpose intended.
RE: wood moment frame
csd
RE: wood moment frame
RE: wood moment frame
woodengineer
RE: wood moment frame
RE: wood moment frame
RE: wood moment frame
I think wood frames are generally looked down upon because it is difficult to provide a true moment resisting connection at the joints. They probably do not hold up to much load when compared to steel either.
If one was willing to use lots of steel knife plates, strong glulam/psl members I'm sure it can be done. I've seen them, just never designed them myself...
RE: wood moment frame