Objective:

Learn how to create and view a volume surface entity

NOTES:

• A volume surface is developed by comparing a base and reference surface. The volume surface will express cut and fill values and an overall total volume of earthworks that must be or have been performed.
• The Base surface will represent Original Ground.
• The Comparison Surface will represent the modified ground as a surface which represents fill above zero elevation and cut as below zero elevation.
• You will be prompted to select a Base surface and a Comparison surface:
• The Base surface will represent ground before earthworks has occurred.
• The Comparison surface will represent ground after earthworks has occurred.

Movie:

Create Volume Surface

Assignment:

1. View the movie
2. Change the visual style for the Top surface so that triangles are disabled
3. Right click on "Volume Surfaces" and select "Create"
4. Select the Bottom Tin as the base
5. Select the Top Tin as the comparison
6. Hit Enter when prompted for a bounding area
7. A new TIN will be drawn below to represent the volume between Top and Bottom