There are several methods to create an analysis model in Tekla Structures.
You can create an analysis model that includes all parts and loads you have in a physical model, or that only includes the selected parts and loads. You can also create a new analysis model by copying an existing one, or you can create a modal analysis model.
We recommend that you first only include columns in the analysis model, and check that the columns are aligned. Then add primary beams and other parts as needed.