2.0

Chapter 1 Using the Grading Commands
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have specified. To correct this, you can vary the slope, or adjust the elevation or
location of the polyline footprint. You may also need to add additional data to
the surface definition.
The following illustration shows an example of how daylight points are located
by the Create Multiple command:
Daylight points based on multiple slopes
Calculating Daylight Points Based on a Single
Slope
The Create Single command on the Daylighting submenu reads the X, Y, and Z
coordinates of your footprint polyline and calculates daylight information
based on the slopes and daylight surface that you have specified. This command
applies a single fill slope and a single cut slope at every vertex on the entity you
select. When the command calculates the daylight information, it does not add
anything to your drawing. Rather, it stores the calculated daylight data within
the entity you select.
For a more accurate daylight line definition, you can add additional vertices to
the polyline footprint with the Add Vertices command. Daylight points are
calculated from each vertex, so the closer they are together, the better the
definition is.
To calculate the location of daylight points using a single slope
1
Select the current daylight surface.
For more information, see Selecting the Daylight Surface in this chapter.
2
Use the Add Vertices command to add vertices to the polyline to provide more
information for the daylight calculation.
3
From the Grading menu, choose Daylighting ä Create Single.
4
Select the polyline.
5
Select the side of the polyline to place the daylight points on.
The following prompt is displayed:
Enter cut (or Grade) <2.00:1>:
6
At this prompt, specify the cut grade or slope using one of the following
methods:
n
Type a slope in the format indicated.
n
Type G and a grade.