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Chapter 4 Working with Cross Sections
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The following illustration shows how connection points are established:
Establishing connection points
The following illustration shows symmetrical and asymmetrical templates:
Symmetrical and asymmetrical templates
The following illustration shows the finished ground reference point:
Establishing the finished ground reference point
Defining a Template that has Subgrade Surfaces
To define a template that has only subgrade surfaces
1
From the Cross Sections menu, choose Templates ä Define Template.
2
Pick the finished ground reference point when you are prompted to do so.
This is the point on the template that controls the placement of the template
horizontally and vertically on the sections. For a typical road template, the
finished ground reference point is the crown of the road. This is the point by
which all symmetrical surfaces are mirrored. The point does not have to be on a
template surface. To define this point at a physical template location, select it
using an appropriate object snaps.
To see a illustration that shows the finished ground reference point, refer to
Defining a Template that Only has Normal Surfaces in this chapter.
The Define Template command displays the following prompt:
Is the surface symmetrical (Yes/No) <Yes>: