Graphics Programs Reference
In-Depth Information
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8.
If the contents of the
Essentials 3
survey database are not visible,
right-click
Essentials 3
and select Open For Edit.
The
Essentials 3
database is the result of
correctly completing the
previous exercise. This
database is provided to
ensure that you start
the current exercise
with the correct version.
9.
Expand Import Events. Right-click
Topo Survey.txt
, and select
Process Linework.
10.
In the Process Linework dialog box, select Essentials for Current
Figure Prefix Database and click OK. Civil 3D redraws the linework,
this time doing so on the appropriate layers. This is evident in the
linetypes that are applied to the treelines and fence lines, which are
now appropriately represented on the drawing (see Figure 3.4).
FiGuRE 3.4
The appearance of the drawing makes more sense now that
features such as fence lines and treelines have been drawn on the appropriate layers.
11.
Save and close the drawing.
Survey Figures
At this point, you may be wondering what the word
figure
means, or, specifi-
cally, what a
survey figure
is. A Civil 3D survey figure is the program's way of
representing a linear feature that has been defined using survey data. A survey
figure is commonly used to represent visible features such as fence lines, edges
of pavement, and treelines as well as topographic features such as tops and bot-
toms of embankments. The topographic feature line layers are usually turned off
when the drawing is plotted. Survey figures can be referenced by other Civil 3D
objects such as surfaces, feature lines, and corridors, enabling design work to
tie into existing features and topography, where applicable.
