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Re: X Bracing - Design Procedure

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For all x-braces, you should also consider the bending due to self-weight.  For
long spans, a significant amount of strength will be used up in dead load
bending alone.

For x-braces loaded by earthquake, axial loads (both tension and compression)
should be taken from the AISC Seismic. Provisions.  The eccentricity should be
accounted for as either bending in the brace or bending in the end connection.

For x-braces loaded by wind, axial loads are usually tension only.  The
eccentricity should be accounted for as either bending in the brace or bending
in the end connection.

Rick Drake, SE
Fluor Daniel, Aliso Viejo

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nattamai mohanram <nattamaim(--nospam--at)yahoo.com> on 03/30/2000 03:40:43 AM

Please respond to seaint(--nospam--at)seaint.org

To:   seaint(--nospam--at)seaint.org
cc:

Subject:  X Bracing - Design Procedure


I need clarification on design procedure for x bracing
using either double angles or tees back to back.In
this  situation, do we normally design the  member for
axial force only or  axial force plus bending induced
due to eccentricity ?  Either way  some reference will
be helpful to me.

Thanks

Nat