Tutorial: Using Feature Lines To Modify A Grading; Exercise 1: Smoothing Feature Line Arcs - Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual

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(page 412).

Tutorial: Using Feature Lines to Modify a Grading

This tutorial demonstrates how to use feature lines to control grading around
inside corners.
Feature line grading involves creating a set of feature lines to define the graded
region as surface breaklines, and then adjusting the elevation of key points
to control the shape of the surface. This technique is ideal for wide, fairly flat
areas, such as parking lots or building pads. It is also well suited to areas with
rapidly changing elevations or slopes where walls would normally be required
to grade successfully. You can manually add or remove feature lines and adjust
their location in three dimensions to achieve precise slope design. Using this
process, you can control water drainage or clean up difficult geometry in areas,
such as the intersection of two or more slopes.
For more information, see the AutoCAD Civil 3D Help topic Editing Feature
Lines.

Exercise 1: Smoothing Feature Line Arcs

In this exercise, you will adjust the tessellation of the arcs around the ramp,
which will result in a more accurate representation of the ramp.
For more information, see the AutoCAD Civil 3D Help topic Editing Feature
Lines.
412 | Chapter 11 Grading Tutorials
Using Feature Lines to Modify a Grading