When the perimeter of an enclosure is selected, foundation appearance options become available on the Properties pane. The foundation is represented in the 2D view as the dotted red lines that run parallel along each side of the walls. As the foundation width changes, as does the distance between the dotted lines. The foundation is only displayed in the 2D view.

To define the foundation width

1 Choose the Select Objects button from the Editing Tools group and click to select the foundation perimeter. Its properties appear on the Properties pane in the right sidebar.

2 Under Foundation Appearance, enter the foundation width you want and press the Return key.

To automatically excavate perimeters below grade

1 Choose the Select Objects button from the Editing Tools group and click to select the foundation perimeter. Its properties appear on the Properties pane in the right sidebar.

2 Select the “Excavate Topography” checkbox to excavate the topography within the enclosure that is below grade.

Deselect the “Excavate Topography” checkbox to keep the topography in place.