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Table Of Contents
Chapter 3 Working with Profiles and Vertical Alignments
222
Drawing Vertical Curves for Ditches
and Transitions
Before creating vertical curves, set the current profile and draw the tangents for
ditches and transitions. All vertical curve commands place the curve on the
same layer as the selected tangents. Although you can draw tangents using
regular AutoCAD commands, use the DT Vertical Curves command to create
vertical curves.
Drawing a Vertical Curve Based on the
Curve Length
To draw the vertical curves based on the horizontal curve length
1 From the Profiles menu, choose DT Vertical Curves to display the Vertical
Curves dialog box.
2 In the Description list, select the Length option. You can also click the Length
icon, and then click OK.
3 Select the tangents that represent the grade coming into and out of the PVI.
4 Enter the horizontal length of the curve.
The command draws the vertical curve based on the length value.
The following illustration shows a vertical curve based on the curve length:
Drawing a vertical curve by length