2.0

Working with Vertical Alignment Tangents for the Ditches and Transitions
219
Changing the Grade Going into the PVI for the
Ditches and Transitions
To edit the grade going into the PVI for the ditches and transitions, use the
Change Grade 1 command.
To change the grade going into the PVI for the ditches and transitions
1 From the Profiles menu, choose DT Tangents ä Change Grade 1.
2 Select the tangents that represent the grades coming into and out of the
PVI.This is the tangent that will have its grade modified.
The following prompt is displayed:
Grade coming into PVI:
3 Enter a value for the new grade in percent, but do not enter the % character.
4 Select another tangent to continue the command, or press ENTER to end
the command.
The command holds the start point of the first tangent, as well as the grade and
end point of the second tangent. It applies the new grade to the first tangent,
calculating the new intersection point with the second tangent to determine
the location of the PVI.
If you use this command after you have added a vertical curve to the PVI, the
command leaves the vertical curve and any labels in their original positions.
Erase the vertical curve, and then recreate it with the Vertical Curve command.
The following illustration shows the new location of a PVI after you change the
grade in:
Changing the grade in