This tutorial demonstrates how to create and modify offset alignments that are dynamically linked to a centerline alignment.
The process of creating offset alignments is similar to that of the standard AutoCAD OFFSET command. However, an offset alignment is dynamically linked to either the geometry or stationing of the centerline alignment from which it was created. As the parent alignment geometry changes, the offset alignment updates.
When your design requires a varying offset value, you can add widening regions to an offset alignment. This option is useful in roadway design, when you must add turn lanes, bus bays, or parking lanes.
Add widening regions to a new or existing offset alignment.
For more information, see the AutoCAD Civil 3D Help topic Creating Offset Alignments.
Topics in this section
- Exercise 1: Creating Offset Alignments
In this exercise, you will create dynamic offset alignments for an existing centerline alignment.
- Exercise 2: Editing an Offset Alignment
In this exercise, you will examine the offset alignment editing tools.
- Exercise 3: Adding a Widening to an Offset Alignment
In this exercise, you will add dynamic widening regions between specified stations of an offset alignment.
- Exercise 4: Editing an Offset Widening
In this exercise, you will change the transition between an offset alignment and its widening region, and then use grips to modify the widening geometry.