2.3.1 - Setup Data Required
Step Description:
Create the base geometry required to create the roundabout. You must have at least two alignments.

NOTE: The Roundabout Layout Wizard will not complete roundabout modeling and grading functions like the Create Intersection Wizard. Assemblies, elevations matching and grading have to be controlled and assigned individually by the user.

AutoCAD Civil 3D 2012 User's Guide reference:
User's Guide - Corridor Modeling - Intersections and Roundabouts - Roundabouts - Understanding Roundabouts - Before You Begin

See Sample Roundabout for an illustration for alignments.

Sample Roundabout Image


For more information watch the video below:
  • Create Roundabout (WMV)