Hi,
Right now, I’m modelling a 15-story RC building in ETABS 19 and performing nonlinear time history analysis to my model. In the end of the analysis, I want to know the story stiffness for every time step. But, when I show the story stiffness table I can’t find the nonlinear case so I can’t get the story stiffness. My questions are : why does ETABS can’t show the nonlinear story stiffness? How can I calculate the story stiffness for every time step of the time history analysis? If I calculate the story stiffness based on story force/drift will it be accurate?
Thank you
