To provide a framework in the longitudinal direction, Civil 3D draws feature lines from assembly to assembly
(see Figure 9.4). The feature lines employ a coding system to determine which points they are drawn through each time they cross an assembly.
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| Figure 9.4 The red lines are feature lines that connect like points on each assembly insertion. |
The feature lines are linked to the assembly insertions, which are linked to the 3D chain, and so on. I’ll stop calling out relationships specifically and just cover it all by saying that everything within a corridor is essentially related.
