2.0

Slope Grading
15
7 Specify a new name for the file, with an extension of .rpt, and click OK to
save it.
Slope Grading
Using the slope grading tools, you can create grading objects. You begin by
selecting a footprint, and then you select the target you want to grade to. A
footprint can be a 2D or 3D polyline, a line, an arc, or an existing grading
object. The target can be a surface, an elevation, or a distance. By using slope
tags, you can create slopes that smoothly transition from one grade to another.
By using target regions you can grade to multiple targets, such as a surface, an
elevation, or a distance.
There are two methods of creating grading objects. You can use the Grading
Wizard, which steps you through every setting you must establish, and then
creates the grading object. Or, you can use a two-step process of changing the
settings, and then use the Apply Grading command. When you create a grading
object, it is saved in the drawing.
The grading object is specifically designed to provide a faster, more efficient 3D
modeling tool to accurately represent such design elements as roadways,
embankments, parking areas, excavations, or ponds. Because the resulting
object is a 3D representation of a design, some portions of a 3D grading object
may not be appropriate for use in precise 2D geometric layout. Specifically, arcs,
which can be used to create the grading object footprint, are broken into a series
of 3D straight-line chord segments. However, the endpoints of these segments
coincide with the underlying true arc geometry, which is stored within the
object itself.
After you create a grading object, you can change its properties, such as the
target, the target regions, the slope tags, and so on. In addition, you can use the
grading object grips to reposition the footprint, the target region boundaries,
and the slope values. Grip editing automatically updates the grading object if it
is not locked. If you do not want the grading object to be edited after you create
it (for example, you dont want it to automatically update if you edit a surface),
then you can lock the grading object.
NOTE
The commands in the Slope Grading menu in the first release of Civil Design
are now located in the Daylighting menu. The Slope Grading menu now
contains the grading object commands.
Creating and Stationing the Grading Footprint
To create a grading object, you must first create a footprint. The footprint
represents the outline of the object you want to grade from. The footprint does
not require an elevation. You can draw a 2D or 3D polyline to use as the
footprint, or you can use a line, arc, polyline, or other objects to create the
footprint. Footprint vertices have X, Y, and Z values that originate from the
object you select to create the footprint. If you select a 2D object for the
footprint, then you can assign elevations to the footprint vertices by using the
Grading Properties or the Grading Wizard command.