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Table Of Contents

Chapter 4 Working with Cross Sections

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The Transitions dialog box displays the left and right transition offset and

elevation values:

If you attach a horizontal alignment, then the offset value is listed in the

First (or appropriate numbered) Offset edit box, for the right or left side

accordingly.

If you attach a vertical alignment, then the elevation value is listed in the

First (or whatever number of profile attached) Elevation edit box, for the

right or left side accordingly.

The Transitions dialog box supports up to eight transitions per side. The initial

Transitions dialog box displays the first through fourth transition. Click More to

work on the fifth through eighth transitions. The Subgrade transition elevation

edit box in the Transitions dialog box records the elevation of the subgrade at

the centerline at the specified station. To transition the subgrade elevation, you

can draw a vertical alignment in profile view and define it as a vertical

transition line. Then you can attach this alignment to the template using the

Attach Profiles option of the Edit Design Control command.

7 Select and clear the offset distances and elevations using the check boxes. If you

clear a check box, the transitioning is not applied when the sections are

reprocessed.

8 Edit the values in the edit boxes to the right of each check box. If no offset

alignments or profiles are attached earlier, you can select the appropriate

offset/elev check boxes, and then edit the values to introduce transitions at this

Station.

The offsets and elevations are used to control the points on the template that

you defined as transition points. A negative offset distance value forces that

offset to the opposite side of the centerline so that features such as medians can

be forced across the centerline. These are actual rather than relative offsets.

9 Click OK to close the Transitions dialog box.