Shear walls too long?
Shear walls too long?
(OP)
I was surprised recently to receive this comment in a review letter. It was not listed with the 9 items for correction, but in a summary paragraph at the end. Here it is, verbatim:
"There are a couple of walls 20'+/- that do not meet aspect ratio along with several of the 10' walls."
I am well familiar with 2:1 max ratio, but what is he talking about here? The longest wall is 10' high and 26 feet long. (It separates two unique family dwellings.)
Code: CBC 2001 (modified UBC 97).
Any idea what is referenced here?
"There are a couple of walls 20'+/- that do not meet aspect ratio along with several of the 10' walls."
I am well familiar with 2:1 max ratio, but what is he talking about here? The longest wall is 10' high and 26 feet long. (It separates two unique family dwellings.)
Code: CBC 2001 (modified UBC 97).
Any idea what is referenced here?






RE: Shear walls too long?
RE: Shear walls too long?
Mike McCann
MMC Engineering
RE: Shear walls too long?
This review came after a revision. I'm not sure why the question was not asked of the previous design team.
I know about the MAX ratio of 3.5:1 (2:1 on this project in EQ Zone 4), but is there a limit at the other end?
It doesn't make sense to me... I've designed long wall sections before... but they did have windows!
I'm calling him... I just wanted to know what section it came from before I called so I could have a solution - and not look uninformed!
RE: Shear walls too long?
RE: Shear walls too long?
I called. He was referring to vertical wall sections, not horizontal sections. Because he had already mentioned the vertical issue in a comment above, I misread his intention.
Anyhow... It was a nice review of chapter 23.