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RE: Shear Wall Rho[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: Shear Wall Rho
- From: "Lutz, James" <JLUTZ(--nospam--at)earthtech.com>
- Date: Tue, 13 Aug 2002 08:42:19 -0700
I think the code intends that the maximum value of rho be applied across the board to all the elements of the primary lateral force resisting system. It's a penalty for not having enough redundancy. I agree that this design philosophy makes more sense for rigid diaphragm systems, because the benefit of redundant elements can be shared more broadly across the structure. But even with flexible diaphragms, the method gives you a bonus for increased redundancy, say by using longer shear walls.
I don't think there is anything in the UBC that implies you should or can apply different values of rho to different parts of the same structure. If you are designing elements according to the provisions of 1632.2, then rho drops to 1.0, but that is not what you are talking about here.
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