Sometimes it is necessary to calculate volumes for only a portion of the site. In some geographic regions the volume calculations for a subdivision are performed separately for lots and roads.

Use the Parcel Volumes method to calculate volumes for a parcel. First, define a parcel by selecting one of the existing parcel boundary polylines in the drawing.

1. Click the Layers icon in the toolbar to display the Layer Properties Manager. Turn on the display of the Subsites layer to view the parcel boundary polylines, and click OK to close the Layer Properties Manager.

2. On the Parcels menu, click Define from Polylines and select the yellow polyline around the hatched area, and then press ENTER to end the command.

   Use the following steps to calculate grid volumes for parcel 1.

3. On the Terrain menu, click Grid Volumes Calculate Parcel Volumes to display the Site Volume Librarian dialog box.

4. From the Select site list, select Site1, and then click OK to display the Parcel Volume Librarian dialog box.

5. From the Select parcel list, select 1, and then click OK.

The parcel volumes method calculations are displayed on the command line, with a cut volume of 2,058 m3, a fill volume of 3,356 m3, and a net fill volume of 1,298 m3.