Creating an Assembly
As mentioned, an assembly consists of smaller components called subassemblies. To create an assembly, you begin by creating an assembly baseline, which is represented by a simple vertical line in your drawing with a single base point marker at its midpoint. Then, you proceed by inserting individual subassemblies that represent elements such as lanes, curbs, ditches, and so on.
Before building an assembly, it is a good idea to have at least a sketch of the typical cross section of your design so that you have something to reference as you work. Having detailed dimensions is helpful, but not critical—the subassemblies can be changed with relative ease, even after the corridor has been built.
To create an assembly that represents ...
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