Learning AutoCAD® Civil 3D® 2010

Chapter 8. Site Design - Assemblies and Corridors

In this chapter, you create corridor models for subdivision roads. Corridor models for large subdivisions are often calculated to the limits of the right of ways, with no daylighting. The grading for the adjacent land parcels is created from the 3D corridor feature lines at the right of way locations.

First, you create a symmetrical assembly for modeling the tangent section of the subdivision road, and an asymmetrical assembly for modeling the cul-de-sac. The assemblies are created by adding pre-defined subassemblies for the lane, curb and sidewalk cross section elements to the assembly objects.

Next, you create a corridor model from two baselines, or alignments. The first baseline is for the centerline ...