Looking into modeling up a curved steel stair stringer made out of flat plate (including welded steel plate treads). In doing so, I've got discreet members that run from the ground to the landing that I was hoping to model up as a plate section (say 3/4" x 10" for sake of discussion). I have no issue modeling this up or assigning section sizes - the issue I have is when looking at my design results. Although the system is behaving as I'd expect, it appears that the design results (are only taking into account the yielding mode from AISC in equation (F11-1). No matter how slender I make my plate element (1/2" x 10", 1/4" x 10", etc), I do not see any checks for the LTB of the bar section per equation (F11-2). Is there a known workaround to this in Elements?
May I please learn how you managed to model the rectangular bar section?
I probably used the RectBar section template. For more see: Creating custom Sections, Materials etc. in RAM Elements [TN]
Thanks Seth! I had overlooked the option.