To create a slab finite element mesh, use the following procedure.

1. Select the Parametric Models tool in the Plate group on the Geometry ribbon tab.
   
   The Parametric Models dialog opens. The structure is displayed as a series of dashed lines to signify this mode can be used to experiment with various settings.
2. Click Add in the Parametric Models dialog. The mouse pointer changes to the add surface cursor .
3. Specify the parametric model parameters:
   1. (Optional) Type a Name for the slab mesh.
   2. Select Slab from the Type drop-down list.
   3. Set the Use nodes and beams that occur on or inside the outer boundary as additional density lines and points? option.
4. 
   
5. Click the corner nodes of the slab in a clockwise order, clicking on the first node selected to complete the boundary definition.
   
   The Mesh Parameters dialog opens.
6. Specify the meshing parameters: Leave the Element Type as Triangular, the Boundary method as (C) Optimized, and the Default Number of Divisions of Boundary Edges as zero.
   
   1. Select Basic from the Meshing Method drop-down list.
   2. Type a Target element size of 100 (in).
   3. Click OK.
   A message dialog prompts if you want to add any openings.
7. Click No. The preliminary mesh is displayed in the view window. The mesh parameters are displayed in the Parametric Models dialog.
8. In the Parametric Models dialog, select the Meshed Surface 1 [Slab] entry and then click Merge Mesh.