
This method is a bit approximate (but faster) and results can have a small error margin if time durations are very large (Midas does have internal time intervals for this - you can try tweaking them and see if it changes the results)Īs for moments at the pin supports, I'm not surprised.

While Midas Civil shows similar moments of the arch in the 1st and 2nd stages as those in RM Bridge and Sofistik, but very different moment in the 3rd stage. RM Bridge and Sofistik show very similar moments of the arch in all three stages, The relevant internal force state must be stored in the specified summation load case.For Sofistik, we use CSM(Construction Stage Module) Line (Linear analysis) and CSM → TH3 (3rd order geometry nonlinear), both gives very similar results

The internal force state (normal forces) of previous construction stages is considered in the p-delta effect calculation.
