Slabs (4.5.6.1)
In accordance with 4.5.6.2 and 4.5.6.3 , the modeling of slabs as fully rigid or semi-rigid is determined by user selection.
The analysis model of the slabs modeled by selecting the fully rigid diaphragm is created automatically.
The analysis model of the slabs modeled by selecting the semi-rigid diaphragm is created automatically.
Rigid, Semi-Rigid, and Flexible Diaphragm Types
In the TBDY 2018 Analysis Settings Wizard, regulations are checked and other options are automatically turned off when a semi-rigid diaphragm is required .