Height/Depth of Walls

When you create a wall (an architectural wall or a structural wall), you can specify the following properties on the Options Bar:

- Level (for 3D views)
- Depth/Height
- Top Constraint
- Unconnected Height

Together with Base Constraint, these properties control whether the wall is drawn from a specified level upwards or downwards, the height of the wall, and whether its height will change when its base constraint or top constraint moves.

When you create a wall in a plan view, the Base Constraint is the level associated with the view. When you create a wall in a 3D view, use Level on the Options Bar to specify the level to use for the wall's Base Constraint value.

Note: When you use Depth on the Options Bar, use a structural plan to see the walls extending downward from the current level, or modify the view range of a floor plan to make them visible.


Source: Autodesk Site