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Chapter 4 Working with Cross Sections
362
Editing, Inserting, or Deleting a
Superelevated Curve
To edit, insert, or delete a superelevated curve
1 From the Cross Sections menu, choose Design Control ä Superelevation
Parameters to display the Superelevation Control dialog box.
2 Under Superelevation Toggles, select the Superelevation calculations check box
if you want to superelevate the cross sections.
If this check box is cleared, the Template Control dialog box displays the
superelevation control as unavailable information.
NOTE
To apply superelevation, you must select Superelevation calculations. If
superelevation is selected and is not being applied correctly, check the
superelevation definition of the template using the Edit Template
command.
3 Under Superelevation Toggles, select or clear the Crown removal by runout
distance check box, depending on your design criteria.
This check box controls the crown removal point by the runout distance. When
you select this check box, the rate the roadway is superelevated between the
normal crown and the removed crown, which remains constant.
4 Click Edit Data to display the Superelevation Curve Edit dialog box.
The Superelevation Curve Edit dialog box displays one curve at a time. The first
area of information displays the assigned curve number and the curve detail
information. The curve number is based on station progression and cannot be
edited directly. If you add or delete curves, then the curve numbers update to
reflect the changes.
The curve detail information includes the starting and ending stations, radius,
length, spiral starting and ending stations (if any), and spiral lengths (if any).