Set Active Surfaces
Function
This command assigns which surfaces to use for initial and final. These
surfaces are used by all the Takeoff routine that compare surfaces
including:
- Calculate Total Volumes
- Calculate Volumes Inside Perimeter
- 3D Drive Simulation
- Cut/Fill Contours/Labels/Color Map
- Surface Inspector
- Quick Profile
- etc.
The surface created by the Make Existing Ground Surface command is
called "Existing" and is the default for the Initial Surface. The
surface created by the Make Design Surface command is called "Design"
and is the default for the Final Surface.
The purpose of this routine to for selecting user-defined surfaces to
use in place of the existing ground or the design surface. For example,
there could be a user-defined surface for alluvial soil that is set as
the initial surface while design is set to the final surface. Then the
calculate volume routines will report the quantities between alluvial
soil and design. Also the Display->Cut/Fill Color Map routine will
make the map for the difference between the alluvial soil and design
surfaces.
These user-defined surfaces can be created using the Add Target
function in the Define Layer Target/Material/Subgrade command combined
with the Make User-Defined Surface command.
Prerequisite: a suface model
Keyboard Command: set_active_tins