Hello
I have an steel frame model, the problem is when I analysed the model and want to start steel fram design check , Etabs shows this error ( in the picture ).
I checked the equation of the sections and there was no problem.
ETABS version...
Hi
i want to calculate the J(cm4)(torsion constant) parameter for double IPE section , but i can't find any formula or method to calculate that . Can someone please help me to find articles or methods to calculate J for double IPE ?