Now we'll add elevation lines to give the site appropriate relief for a walkout basement.
- Select Terrain> Elevation Data> Elevation Line
. - Draw an elevation line on the side of the house opposite the gable entrance. This part of the terrain will become lower in elevation.
- Select the elevation line and click the Open Object
edit button to open the Elevation Line Specification dialog. You can also double click the elevation line with the Select Objects 
tool active to open it for specification. - Set the elevation at negative 96 inches (-96).
- Click OK to close the Elevation Line Specification dialog.
- Draw another elevation line on the other side of the house. We'll let this elevation line stay at the default elevation of 0.
- Let's take look at our progress so far. Select 3D> Create Render View> Render Full Overview
.
- We can see that the lot is beginning to slope, but it could use a little more work. Close the current 3D view by selecting File> Close from the menu, pressing F4, or clicking the
in the top right corner of the window. If you have other active 3D views open, you may want to close them too. When multiple 3D views are open, your computer's performance may not be optimal.
