I'm looking for thoughts on the appropriate value of Sc for angle leg local buckling in section F10.3 of AISC 360-10. The code gives some guidance for equal leg angles in that Sc is 0.8 times geometric axis section modulus.
But what about for unequal leg angles? Should I be using Sz?
Specifically, I'm looking at an L6x3 1/2x5/16 with the 6" leg up.
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