Technical data

Calculating Volumes for a Grading Object

To create breaklines from a grading object

Steps

Use

to look up

1 Create a grading object.

For more information, see “Creating a Grading

Object” in this chapter.

2 From the Grading menu, choose Slope

Grading ➤ Create Breaklines.

Create Breaklines from a

Grading Object

3 Do one of the following:

Type Current to add breaklines to the current

surface. Select the grading object and enter a

description for the breaklines.

Type New to add the breaklines to a new surface.

The New Surface dialog box is displayed. Enter a

name and a description for the new surface and click

OK.

Type Select to add the breaklines to an existing

surface. The Select Surface dialog box is displayed.

Select the surface you want the breaklines to be

added to and click OK.

Calculating Volumes for a Grading Object

You can calculate general volume statistics for the grading object using

the Statistics tab in the grading properties or the Calculate Volumes

command. The composite volume method is used to calculate the

volume results. This method compares the grading object with the

grading target(s) to determine the volumes.

The grading object must meet certain requirements in order for the

Calculate Volumes command or the Calculate button on the Statistics

tab to work properly. In instances where these commands do not

generate volumes, or if you want to verify volume calculations, you

can create a surface from the grading object (and add surface

information to the interior of the footprint, such as points, contours,

or 3D polylines if needed), and then use the Volume commands on

the Terrain menu to calculate volumes.