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Re: Column with torsion

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Refer to LRFD Specification Section H2.  Bending, axial, and torsion will
contribute to the total normal stresses.  Bending and torsion will
contribute to the total shear stresses.

Rick Drake, SE
Fluor, Aliso Viejo, CA
rick.drake(--nospam--at)fluor.com
949-349-5791

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                      Michael Hemstad                                                                                                  
                      <mlhemstad(--nospam--at)yahoo.co      To: seaint(--nospam--at)seaint.org                                                                   
                      m>                                                                                                               
                      04/28/03 01:15 PM        cc:                                                                                     
                      Please respond to                                                                                                
                      seaint                   Subject:  Column with torsion                                                           
                                                                                                                                       
                                                                                                                                 ..... 
                                                                                                                                       




In a stroke of brilliance, one of my clients attached
a fitting through the fireproofing to a WF column in
his (my) new building.  It sustains about 7000 pounds
of tension horizontally, acting in the strong axis of
the column near the tip of the flange.

The bending I know how to analyze.  Can anyone offer
some guidance as to how the torsion component affects
my column interaction?  Thanks for any help.

Mike Hemstad, P.E.
TKDA
St. Paul, Minnesota

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