To Adjust Grading Volumes

1. Click Analyze tabVolumes And Materials panelGrading Volume Tools Find.
2. In the Grading Volume Tools, click .
3. In the Select Grading Group dialog box, select a grading group or create a new one.
4. Optionally, click to review and change properties for the grading group.
   Note: If you do not see the information displayed in the Cut, Fill, and Net volumes boxes, check the Grading Group Properties to ensure Automatic Surface Creation is selected and a Volume Base Surface is specified.
5. Select either Entire Group or Selection to identify the grading that you want to raise or lower to make the volume adjustments. For Selection, click and select objects in the drawing.
6. In the numeric field in the upper-right of the Grading Volume Tools, enter the distance (typically feet or metres) by which the grading will be raised or lowered for each elevation adjustment.
7. Do one of the following:
   • To manually adjust the grading level, click or and note the changed values for cut, fill, and net volume.
   • To automatically adjust the level to meet a net volume target, click . Enter the target volume in the Auto-Balance Volumes dialog box, then click OK. The level is adjusted several times, getting as close to the target as possible.

Note: Automatic volume balancing is an iterative process, adjusting the gradings up or down in progressively smaller steps to achieve the target volume. Typically the resulting volume is not exactly what was entered as the target value. To prevent it from excessively adjusting and recomputing the volumes, it stops when the result is within a tolerance of 0.1% of the starting net volume. If the result is not close enough to your target volume, you can run the command again.