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)earthlink.net>
> 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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