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Chapter 4 Working with Cross Sections
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Specifying the Design Control Values for Ditches
NOTE
When you attach a vertical alignment for a ditch, the ditch elevations are
recorded in the Ditch Control Editor. The Ditch Control Editor dialog box is
split up into left and right ditches.
To specify the design control values for ditches
1 From the Cross Sections menu, choose Design Control ä Edit Design Control to
display the Enter Station Range dialog box.
2 Enter the station range, and then click OK to display the Design Control dialog
box.
3 Click Ditches to display the Ditch Control dialog box.
4 Set the ditch type for each side by using the following Type list:
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None: Turns the ditch type off completely.
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Cut: Defines the ditch for a cut situation.
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Fill: Defines the ditch for a fill situation.
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Cut/fill situations: Defines the ditch for a cut and fill situation.
5 Define the ditches using foreslope and centerline offset, or one of these two
parameters with either depth or base elevation.
Select or clear the foreslope, centerline offset, depth, depth from hinge, or base
elevation check boxes. Enter values for the selected boxes:
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Foreslope: Enter the slope from the template connection point to the ditch.
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Centerline Offset: Enter the distance from the centerline to the inner edge
of the ditch.
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Depth: Enter the vertical distance of the ditch, which can be measured from
either the top of the foreslope or the finished ground reference point of the
template. Enter the depth of the ditch as a positive value.
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Depth from Hinge: This check box is used in conjunction with the Depth
value and is only available after you have selected the Depth value.