2.0

Drawing Vertical Curves for the Finished Ground Centerline
207
Defining a Grade Break Without a Vertical Curve
You can add a grade break to the PVI (Point of Vertical Intersection) where two
tangents meet. When you define a grade break, a PVI symbol is inserted at the
PVI and a vertical curve of zero length is assigned to the PVI selected. The PVI
block is drawn on the specified finished ground layer (set with the Set Current
Layer command).
To define a grade break without a vertical curve
1 From the Profiles menu, choose FG Vertical Curves to display the Vertical
Curves dialog box.
2 Select the Grade Break option by clicking its name in the Description list. You
can also click the Grade Break icon, and then click OK.
NOTE
If you do not see the graphic representation of the curve type you want to
create, then click the Next or Previous button at the bottom of the Vertical
Curves dialog box.
3 Select a grade break.
This is the intersection of two vertical tangents. The object snap,intersection, is
automatically set so you can easily select the intersection.
NOTE
The command reports No intersection found at selected PVI point if the
selection point is not the intersection of two lines.
The following illustration shows a grade break selection point:
Defining a grade break