Three Triangulation Surface Volumes
This command uses a set of three surface files, (.TIN, .FLT) to
generate volumes between them. The user is prompted for the names
of the three files as: Existing, for existing conditions, Final,
for final design, and Strata, for a subsurface, such as rock. An
Inclusion or Exclusion Perimeter can be selected, and then the
Volume Report Options are presented. Picking OK generates the
Volume Report. 
The
amount of Cut into the Strata surface is reported, as well as Other
Cut, Total Cut and Total Fill. The Areas for the same are
also reported. The volume and area of Overexcavation is also
reported.
Pulldown Menu Location: Surface >> Volumes By
Triangulation
Keyboard Command: trivol3
Prerequisite: 3 Surface Files (.FLT or .TIN)