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Brace connection at mid-point
- To: <seaint(--nospam--at)seaint.org>
- Subject: Brace connection at mid-point
- From: <William.Sherman(--nospam--at)CH2M.com>
- Date: Thu, 8 Mar 2007 07:26:17 -0700
In using cross-bracing connected at the mid-point and designed for tension-compression loads, must both braces be "continuous" thru the joint? In tension-only bracing it is common to interrupt one member and connect with a gusset plate at the mid-point, but it is not clear if the same details can be used for tension-compression bracing. In looking thru references on the AISC website, I could not find direct disussion of continuiuty of diagonal braces. I have seen various articles that discuss the use of the tension brace to laterally support the compression brace with respect to "effective length" - but a discontinued brace would "encourage" buckling at the mid-point vs a continuous brace. If true full lateral support is provided at the mid-point perhaps it should not matter, but reducing the buckling capacity of the compression brace and relying solely on the tension brace to prevent buckling at the mid-point seems like a bad idea.
If possible, please provide references that address this situation.