2.0

Modifying Design Control
343
4 Select the template you want to use.
In the Template Librarian dialog box, click Select to the right of the Template
box and choose a template.
Alternatively, you can type the template name directly in the in the Template
box, if you know the name.
NOTE
NULLT is a valid template that consists of a single point. Select NULLT if
you dont need to use a template.
When you select the template, the datum line is automatically set to datum #1.
This datum line is used for the cut and fill volume calculations. When you
defined the template, if it only had normal surfaces, then you were prompted to
select the points that defined the datum. If the template had a subgrade surface,
the datum line was defined automatically. Use the Edit Template command to
add additional datum line definitions to the template.
5 Enter the datum number.
If you have defined more that one datum, do one of the following:
n
Click Select to display the Datum Librarian dialog box.
Alternatively, you can type the datum number directly in the Datum box, if
you know what it is.
n
Select the datum number you want to use from the scroll list.
As you select a number, the datum and a graphic representation of the
template is displayed in the image tile. This is only a representation of the
template and the datum. It is only meant to aid in selecting the correct
datum and is not drawn to scale. Click OK to select the datum and return to
the Template Control dialog box.
6 Edit the template superelevation parameters, if necessary.
NOTE
The options in this dialog box are enabled only if the Superelevation
Calculations check box is selected in the Superelevation Control dialog
box.
7 Edit the template transitions, if necessary.
8 Click OK to return to the Design Control dialog box.
Editing the Transitions
To edit the transitions from the template control dialog box
1 From the Cross Sections menu, choose Design Control
ä
Edit Design Control to
display the Enter Station Range dialog box.
2 Enter the station range, and then click OK to display the Design Control dialog
box.
3 Click Template Control to display the Template Control dialog box.
4 Click Edit Transitions at the bottom of the Template Control dialog box to
display the Transitions dialog box.
When you use the Edit Design Control command to attach a horizontal or
vertical transition alignment to a template, the appropriate check box in the
Transitions dialog box is selected and the offset or elevation is listed in the edit