Exercise 1: Simplifying A Building Footprint - Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual

The drawing used in this tutorial contains a surface and a building pad that
consists of two tiers connected by a small ramp. The elevation of the top
portion of the building pad is 402 feet, and the bottom portion is 400 feet.
Projection grading, also known as slope grading, involves projecting a slope
from a feature line to a specified target. Projection grading targets include an
intersection with a surface, or a specified distance, elevation, or elevation
difference. The ramp that connects the two tiers consists of arcs and inside
corners, both of which complicate a grading plan. Simply applying projection
grading, which was demonstrated in the Creating a Grading exercise (page
397), would result in a grading that overlaps itself.
In this tutorial, you will learn how to create a successful grading solution for
similarly complicated scenarios. After you have completed this tutorial, proceed
to the Using Feature Lines to Modify a Grading tutorial (page 412) to learn how
to modify the grading solution, using the AutoCAD Civil 3D feature line
editing tools.
For more information, see the AutoCAD Civil 3D Help topic Creating Grading.

Exercise 1: Simplifying a Building Footprint

In this exercise, you will use the feature line stepped offset command to
generate a simplified footprint from which to grade.
The drawing you will use in this tutorial displays a building pad in two
vertically arranged viewports. In the right viewport, the building pad is shown
in plan view. You will design the building pad in the right viewport. In the
left viewport, the building pad is displayed in model view. You will use this
viewport to see the status of the design as you work.
Exercise 1: Simplifying a Building Footprint | 405