2.0

Defining Subassemblies
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NOTE
If subgrades are defined for a template, then you will not be prompted to
define a datum line.
The top surface defines a boundary along a cross section template from which
finished ground data can be extracted. This data is generally used for visualizing
the roadway in its finished state by creating a 3D road grid or building a surface.
While defining a subassembly or template, you are prompted to define the
datum surface, but not the top surface. You can define the top surfaces for
templates and subassemblies by using the Edit Template command and the Edit
Subassembly command. If you do not define the top surface, then a top surface
is automatically generated by connecting the two connection points with a
straight line.
Attaching the Subassemblies to Templates
You attach subassemblies to templates during the process of defining the
template with the Define Template command.
NOTE
You can also attach subassemblies to templates using the Edit Template
command.
NOTE
Subassemblies cannot be used on templates that have subgrades they can
only be used with templates that have normal surfaces. If subgrades are
defined for a template then you will not be prompted to attach
subassemblies.
To attach subassemblies to normal templates
1 Use the Define Template command to define a normal template. After you have
selected all of the datum line points as part of defining the normal template,
the Subassembly Attachments dialog box is displayed.
2 Select the subassembly to attach.
To select a subassembly, either enter the name of the desired subassembly in the
appropriate box or click the Select button (to the right of the subassembly
name) to access the Subassembly Librarian dialog box.
The two types of subassemblies that you can attach to the left and right of cross
section templates are curb and shoulder. For shoulder subassemblies you can
choose two different shoulder definitions, one to be applied in cut situations
and one for fill situations. Working from the centerline out, the first category of
subassembly that is attached to the connection point out is referred to as the
curb subassembly. The second category of subassembly that is attached is the
shoulder subassembly. Use the NULLS subassembly name in the places where a
subassembly is not required.
NOTE
Templates must have subassemblies as well as surfaces. If subassemblies are
not required, then you must use the NULLS subassembly name in place of
having a subassembly.
The connection-point-out of the shoulder connects either to the ditch foreslope
if you are using ditches, or to the design slope if you are not using ditches. You
can define two different types of shoulder subassemblies for each side of the