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The AISC interaction equation approach is a very convenient design tool and has been widely accepted as the basic design approach for beam-columns. This study has addressed itself to one special aspect of the interaction equation approach (lateral-torsional buckling failure mode) and resulted in a conclusion that for lateral-torsional buckling, a modification function to the bending stress ratio (fb/Fb), different from the AISC format, can provide improved designs on a more rational basis. For in-plane failure mode the present AISC interaction equation remains a very good approach.

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Published: 1981 Number of Pages: 29 File Size: 1 file , 890 KB