AISC Slenderness check for angles

[McEngr]

Equation E7-04 uses the b/t limit of 0.56 times the E/Fy squareroot while the table B4.1 uses 0.54. It seems to me that these should be the same number. Agree or not?

 

[dakota_79]

First, you're comparing apples and oranges. Table B4.1 Case 6 to which you refer is for the compression element of a single angle in flexure (not of a single angle in uniform compression). See case 5 above that for single angle legs in pure compression.

Second, section E7.1a (equation E7-4) does not apply to single angles. See section E7.1c.

 

[McEngr]

Thanks Dakota. I'm embarrassed that I even asked that question.

 

[dakota_79]

Pffft - we've all been there before!