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Add Excavation

To add an Excavation Boundary to your model:

  1. Select the Geometry Geometry workflow tab workflow tab.
  2. Select Add Excavation Add Excavation icon from the toolbar or the Boundaries menu.
  3. Enter the vertices of the excavation as described in Entering Coordinates.
  4. An excavation boundary must always be closed. To close the excavation boundary, after all vertices are entered, right-click and select Close Boundary, or you can type c and Enter in the prompt line. This automatically and correctly closes the excavation, and saves you the trouble of having to re-enter the first vertex to complete the boundary.


While you are entering a boundary, you can undo mistakes, draw arc segments or circles, and activate the snap options. See the following topics for information:

If the Snap option is activated, you can also close an excavation boundary by snapping to the first vertex after all other vertices are entered.

Excavation Boundaries and Staging

In a multi-stage model, an Excavation boundary will usually represent the maximum extent of an excavated region. Intermediate boundaries within excavations, representing different stages of excavation, can be represented by either Stage boundaries or Material boundaries. You CANNOT add Excavation boundaries which are within, crossing or overlapping other Excavation boundaries.

Surface Excavations

If you are using Excavation boundaries to model a surface excavation, you will have to make sure that the Excavation and External boundaries are coincident with each other, where appropriate.

For a tutorial on modelling surface excavations, see the RS2 Tutorials.

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