Are 3x Studs Req’d. @ Panel Edges of 24″ O.C. Exterior Sheathed walls?
The structural engineer I use just gave me a call. He was reading the NDS (National Design Standards) and found that 3x studs are required at 24″ O.C. framing that is sheathed w/ plywood/osb. I am assuming this is a requirement only at shear walls, but in the Northwest at least just about every exterior wall is used as a sheathed shear wall.
I was wondering if anyone else has run in to this or if engineers/plans examiners have just been ignoring it?
Another related note is that I was discussing 24″ o.c. walls with a builder the other day. He noted that he had just finished doing a house with 24″ o.c. walls and that due to the lack of extra studs for strength the O.S.B. had a tendency to pucker the wall (a curve from top to bottom). I asked him if he thought that it was a problem that you would only find with O.S.B. or would plywood do it too? He thought as I did that it would probably only be a problem with O.S.B….which is fine with me cuz I don’t really like it on my walls anyways.
I keep trying to get wood out of walls, but engineers and builders keep trying to add it back in. =)
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