Define whether slabs are meshed for 3D building analysis and grillage chasedown analysis
To ensure the quickest solution time, two-way slabs are by default not meshed for 3D building analysis or grillage chasedown analysis. In this case, the diaphragm option (none, semi-rigid, or rigid) in the slab properties determines their axial rigidity and a 3D pre-analysis process is used to FE decompose loads from the slabs on to supporting members.
If you prefer, you can instead choose to mesh the slabs, either at all, or selected construction levels.
Note: Two-way spanning slabs are always meshed in the FE chasedown analysis
that occurs as part of the static design process.
Use meshed two-way slabs in at all construction levels
- Go to the Project Workspace.
-
In the Structure tree, select
Levels.
- In the Properties window, select the Mesh 2-way Slabs in 3D Analysis option.
Use FE decomposed slab loads at all construction levels
- Go to the Project Workspace.
-
In the Structure tree, select Levels.
- In the Properties window, clear the Mesh 2-way Slabs in 3D Analysis option.
Use meshed two-way slabs at selected construction levels
-
In the Structure tree, expand the Levels branch.
- Click one of the desired construction levels.
- According to your needs, either select or clear the Mesh 2-way Slabs in 3D Analysis option.
- Repeat step 3 for all the desired construction levels.