Good morning, I'm trying to perform response spectrum modal analysis with Response spectrum user define data option on a multistory concrete building. The porpoise is to introduce in the FE model, seismic actions according to Italian design code (NTC2018…

Dear all, Error found during the seismic definition analysis. Found the error "no unsupported masses found - check densities" . Kindly help me out from this . COLLEGE PROKECT.STD

Hi guys, I' m trying to make a seismic analysis, using the response spectrum (EC8) from the "load item" list. In the second phase I' m define one spectrum in x and y direction (direction parameters 1 and 0,3), specifying the masses (selfweight, live…