Add Ground Surface

A Ground Surface Boundary is an open polyline representing the ground surface. Only ONE Ground Surface boundary can be defined. A Ground Surface boundary is optional, and is typically used in conjunction with the Gravitational Field Stress option, for surface or near surface excavations.

To add a Ground Surface boundary to your model:

1. Select Add Ground Surface from the Boundaries menu.

2. Enter the vertices of the ground surface as described in Entering Coordinates.

3. When all vertices are entered, right-click and select Done, or press Enter with nothing in the prompt line, and the Ground Surface boundary will be added to the model.

NOTE:

• While you are entering a ground surface boundary, you can undo mistakes, activate the snap options etc. See the following topics for information:

Correcting Mistakes

Drawing Arc Segments

Toggling the Snap mode

Import from DXF

Ground surface boundaries can also be imported from a DXF file.