STAAD.Pro will be able to optimize composite beams only for the AISC ASD 9th edition code ( command CODE AISC ). For LRFD 3rd edition code ( command CODE LRFD ), it would be able to check the composite section but not optimize it. Design of composite sections are not available yet for the AISC 360-05 or AISC 360-10 codes ( command CODE AISC UNIFIED 2005 or CODE AISC UNIFIED 2010 ).
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