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Re: x-brace...seismic slenderness (revised)

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Please trash my first post.

1994 UBC Special concentric bracing members, the (KL/r) is limited
whereas in 
1997 UBC Special concentric bracing members, the (L/r) is limited.

In both cases, the limit is 1000/root(Fy).
The 1996 Blue Book definitions match the 1994 UBC definitions.

The section referenced in the 1997 UBC is 2210 Section 10, on page 
2-242, in the revisions to the AISC Seismic Provisions.  I see it 
also conflicts with 97 UBC 2213.9.2.1. 

Looks like a typo on pg 2-242.

Sorry if this is too far off thread.  It's vaguely related,
considering the definition of L, unbraced length, as used in these
slenderness limits, for x-braces in the out-of-plane mode.

Dave Evans, P.E.
TNH, Inc.