Thanks for the suggestion..
There are the same diaphragm constraints. I did not assigned rigid diaphragm in Etabs.
Regarding the declaration of the participating mass, I am quite convinced that this is not the problem.
It is not the first project when I use both programs for the same...
The structure that I am trying to model has a strange shape. The shape of a butterfly (two wings and a small "core" between this wings).It is a steel structure. It has 21 levels. In our country, because it is a seismic one, the building's elements are "sized by the Earthquake".
I have made a...
The structure that I am trying to model has a strange shape. The shape of a butterfly (two wings and a small "core" between this wings).It is a steel structure. It has 21 levels. In our country, because it is a seismic one, the building's elements are "sized by the Earthquake".
I have made a...
