To Create a Grading Group

Grading groups are used to organize gradings into named collections for surface creation and volume computations.

You can choose whether to automatically create a surface from the grading group, and you can identify a base surface for volume calculations. Once you create a surface from a grading group, you can use the Grading Volume Tools to adjust the elevation of the grading group to balance cut and fill volumes.

You can also create new grading groups while using the Grading Creation Tools command.

1. In Toolspace, on the Prospector tab, expand Sites, then expand the site to which you want to add the new grading group.
2. Right-click Grading Groups Create Grading Group.
3. In the Create Grading Group dialog box, enter a name and an optional description for the grading group.
4. Optionally, to create a surface for the grading group, select Automatic Surface Creation to activate additional options for the output surface and the base surface. It also creates a surface in the Surfaces collection in the Prospector tree.
   Note: When you create a surface using the Automatic Surface Creation option, the Grading Group is listed on the Definition tab of that surface’s Properties dialog box.
5. Optionally, if you plan to do any calculations of cut and fill volumes for the grading group surface, select Volume Base Surface and select the base surface from the list.
6. Click OK.