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Re: "X" Bracing

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X bracing (rods used for tension forces only) is used in every metal
building I have ever heard about or seen.
I have a relatively large one under construction now as a fire station.
All X bracing is tension only.

Stan Scholl, P.E.
Laguna Beach, CA

On Thu, 24 May 2001 12:21:07 -0700 "Larry Hauer" <lrhauer(--nospam--at)>
> I have been asked to provide engineering services for the expansion 
> of an older prefab metal building with existing "X" braced tie rods 
> for the lateral load carrying system. Somewhere I remember hearing 
> the this type of lateral resisting system has fallen out of favor, 
> and that tension only "X" bracing may no longer be allowed, although 
> I couldn't find any such restriction during a quick look in the 1997 
> UBC. Does anyone have any information on "tension only" "X" bracing 
> in seismic zone 4?
>  Thanks in advance,
>  Larry Hauer, S.E.

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