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Re: X-Bracing[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: X-Bracing
- From: Mlcse(--nospam--at)aol.com
- Date: Tue, 11 Feb 2003 13:41:56 EST
I would personally not use half the brace length for out-of-plane bucking. One brace is in tension and will attempt to help prevent out-of-plane buckling of the compression brace at midspan where the tension brace intersects the compression brace. There will likely still be some out-of-plane deflection of the compression brace, but less than if there were no tension brace present to help restrain the compression brace. You could conservatively use 1.0, but I wouldn't go less than 0.75 (more of gut feel, than maybe based upon test data). Most likely the brace is going to buckle out-of-plane unless you can orient your brace such that it buckles in-plane (HSS turned flat, Wide-flange brace turned flat, etc.). For buckling in-plane, you probably could use half the length since the tension brace supports the compression brace where the braces interesect each other.
Michael Cochran S.E.
In a message dated 2/11/03 8:51:16 AM Pacific Standard Time, RainCat1(--nospam--at)aol.com writes:
What do you use as the effective length? Is it half the brace length for both Ly &Lx or full length for one axis and half on the other axis?
I know there were studies that you could use half the length of the brace - could anyone point to the latest word on this topic?
Thanks a lot!
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