2.0

Modifying Design Control
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The Depth from Hinge check box controls how the depth of the ditch is
measured. When this option is selected, the depth of the ditch is measured
down from the top of the ditch foreslope. When this option is cleared, the
depth is measured down from the finished ground centerline reference point.
n
Base elevation: Enter the true elevation of the bottom of the ditch. If you
use this option, the elevations are usually retrieved from the profile using the
Attach profiles option.
n
Base Width: Enter the width of the bottom of the ditch.
NOTE
You can only use two of the ditch parameters at a time (except when
the depth from hinge is selected, which makes three items selected.) If
you enter less than two parameters, ditches are not applied. If more
than two options are selected, then a warning message is displayed
and you need to correct the situation. The command automatically
calculates the other parameters.
6 When you have entered the ditch parameters, click OK to close the Ditch
Control dialog box.
7 Click OK from the Design Control dialog box to process the sections.
The Process Sections dialog box is displayed.
8 Click OK to exit the command.
The following illustration shows the difference in depth calculations based on
the setting of this check box:
Ditch design parameters
Specifying the Design Control Values for
Sideslopes
Using the Design Control dialog box, you can set design control values for
sideslopes. If you plan on using either the stepped, surface, or depth slope types,
then you first need to define the required slope tables. For example, if you plan
on using depth-controlled slopes, first use the Depth Slopes command to define
the slope parameters.