Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 227

Alignment Layer: C-ROAD
Alignment Label Set: Major Minor and Geometry Points
Setting the site to <None> prevents the alignment from interacting with
other objects in the drawing. The <None> selection is helpful when you
do not want parcels to be created when either intersecting alignments
form closed regions or an alignment crosses an existing parcel.
5 Click the Design Criteria tab.
The Starting Design Speed value specifies the default design speed at the
alignment starting station. Design speeds can be specified at other stations
along the alignment. If no other design speeds are specified, the Starting
Design Speed is applied to the entire alignment. Accept the default Starting
Design Speed value for this exercise.
The other options on this tab are used only if you want to ensure that
the alignment design meets specified design criteria. You do not apply
design criteria to the alignment in this exercise. You will learn how to
use the design criteria feature in the
to Local Standards
6 Click OK.
The Alignment Layout Tools toolbar is displayed. It includes the controls
required to create and edit alignments.
Draw the alignment
1 In the Alignment Layout Tools toolbar, click the drop-down list
select Curve and Spiral Settings. In the Curve and Spiral Settings
dialog box, you can specify the type of curve to be automatically placed
at every point of intersection (PI) between tangents.
2 In the Curve and Spiral Settings dialog box, specify the following
parameters:
Type: Clothoid
Spiral In: Cleared
Curve: Selected
Spiral Out: Cleared
Default Radius: 350.0000'
Exercise 1: Creating an Alignment with the Alignment Layout Tools | 215
Designing an Alignment that Refers
(page 248) tutorial.
and