Can someone please explain me why does a P-M2 hinge on a RC column doesnt follow the backbone curve after reaching the yielding point?
I assume that is because of the interaction curve but how can i prevent this behavior to happen on the software...
Good Morning.
I have a basic question, I am trying to verify manually the biaxial interaction surface curves that ETABS generates using ACI 318-19 formulas.
As expected I have no problem when doing it along the mayor axis (Angle=0). However, once i evaluate the rotate it, the curve doesnt...
