Exercise 2: Adding Free Curves And Spirals To An Alignment - Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual

Exercise 2: Adding Free Curves and Spirals to an
Alignment
In this exercise, you will add a free curve and a free spiral-curve-spiral to a
simple alignment.
The drawing contains a simple alignment consisting of three tangents. In the
next few steps, you will add free curves at circles B and C.
For more information, see the AutoCAD Civil 3D Help topics Adding Curves
and Adding Curves with SpiralsAdding Curves with Spirals.
This exercise continues from
Alignment Layout Tools
Add a free curve between two tangents
1 Open Align-2.dwg, which is located in the
819).
2 Set your drawing window so that you can see circles B and C on the
surface.
3 If the Alignment Layout Tools toolbar is not open, select the alignment.
Right-click and click Edit Alignment Geometry.
4 In the Alignment Layout Tools toolbar, click the drop-down list
Select
5 As prompted on the command line, click the tangent that enters circle
B from the left (the 'first entity').
6 Click the tangent that exits from circle B on the right (the 'next entity').
7 Press Enter to select the default value of a curve less than 180 degrees.
8 Enter a radius value of 200. The curve is drawn between the tangents as
specified.
Add a free spiral-curve-spiral between two tangents
1 In the Alignment Layout Tools toolbar, click the arrow next to
Free Spiral-Curve-Spiral (Between Two Entities).

Exercise 2: Adding Free Curves and Spirals to an Alignment | 217

Exercise 1: Creating an Alignment with the
(page 214).
Free Curve Fillet (Between Two Entities, Radius).
tutorial drawings folder (page
. Select
.