torsion capacity

You should use the AISC 360-10 or 360-16 design code where the torsion check as per Design Guide 9 can be invoked by assigning the design parameter TORSION 1.

Please note that any built up section imported from the Section Wizard will be designed as an equivalent I section rather than considering an actual shape of the section.

You should use the AISC 360-10 or 360-16 design code where the torsion check as per Design Guide 9 can be invoked by assigning the design parameter TORSION 1.

Please note that any built up section imported from the Section Wizard will be designed as an equivalent I section rather than considering an actual shape of the section.

Dear sir,

I checked as per your instruction but beam no 43 is failing as per eq h.3.8 and beam 45 is safe even as per equation 0.6fy the coming stress is less than 0.6*355=213mpa .Why beam 43 is failing then.Kindly explain.

5123.STEEL STAIRCASE.std

Thank you in advance

Please attach the UPT files used in the model.