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Chapter 4 Working with Cross Sections
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To change the cross section sampling settings
1 From the Projects menu, click Drawing Settings to display the Edit Settings
dialog box.
2 From the Program list, select Civil Design.
3 In the Settings list, click Cross Section Sampling, and then click Edit Settings to
display the Section Sampling Settings dialog box and configure the settings.
NOTE
This dialog box is displayed automatically when you are using the Sample
From Surface command.
4 Under Swath Width, type values in the Left and Right boxes to control how far
to the left or right the existing ground is sampled.
If you are using a template, then you must set the swath width on both sides to
a value that is greater than half the width of the template. If you do not set the
swath width correctly, then you get an error when sampling for the template.
The error states: "Template larger than cross section" and appears within the
Control Processing Errors after having run either the Process Sections or Edit
Design Control command.
The Sample from Surface command calculates the existing ground cross section
information by reading the Terrain Surface definition at the station. For each
cross section, the offset/elevation points are calculated at the centerline of the
cross section, at each point where the cross section intersects a surface triangle
edge and at the outer edges of the swath width.
5 Under Sample Increments, type the increments for sampling the tangents,
curves, and spirals in the appropriate boxes.
The sample increments are used to determine how often to sample cross-
sections along different object types. For example, if you set the Spiral sample
increment to 10, then cross section data is created every 10 units along a spiral.