2.0

Defining Ditches or Transitions as Vertical Alignments
231
NOTE
This command uses the AutoCAD DIM HORIZ command to insert the
length marker. To change any factors associated with this label, such as the
arrow size, use the AutoCAD dimensioning variables.
The following illustration shows labeling a vertical curve:
Labeling a vertical curve
Defining Ditches or Transitions as
Vertical Alignments
After drawing the tangents and vertical curves on the profile for a ditch or
transition definition, you need to define it as a vertical alignment. The process
of defining a vertical alignment for a ditch or transition is almost identical to
defining a finished ground centerline. The only difference is that you must
specify which alignment you are defining.
To define the ditches or transitions as vertical alignments
1
From the Profiles menu, choose DT Vertical Alignments ä Define
Ditch/Transition.
2
Specify the profile you want to define: Centerline, Left, or Right.
If you choose Left or Right, specify which of the eight transition regions or the
ditch you want to define. The command turns off all layers except the layer of
the alignment you specify. It is very important that the tangents and vertical
curves are on the appropriate layer. If the vertical alignment entities are turned
off, cancel the command and move the entities to the correct layer.
3
Select the starting point of the alignment (the point with the lowest station
value). For a left to right profile, it is the left end of the vertical alignment; for a
right to left profile, it is the right end. The command sets the object snap to
END automatically.
4
Use a window or crossing to select the entire alignment.
5
Press ENTER after you select all the alignment segments.
The command then displays the number of PVIs included in the selection set.