The AISC code check utility produces questionable results. The code check flaged beams as non-code compliant on one side of a symetrical structure but not on the other. I increased the beam size to address the deficiency, but without any change in the code check result. I noticed that regardless of beam size, the quantity Kl/r used in the buckling stability check was not changing. Clearly there is a bug in the utility that needs to be addressed. I have brought this to the attention of the tech support engineers previously without any result.
