X Marks the Spot: Points
The foundation of any civil engineering project is the simple point. Most commonly, points are
used to identify the location of existing features, such as trees and property corners; topography,
such as ground shots; or stakeout information, such as road geometry points. However, points can
be used for much more. This chapter will both focus on traditional point uses and introduce ideas
to apply the dynamic power of point editing, labeling, and grouping to other applications.
By the end of this chapter, you’ll learn to:
◆ Import points from a text ﬁle using description key matching
◆ Create a point group
◆ Export points to LandXML and ASCII format
◆ Create a point table
Anatomy of a Point
Civil 3D points (see Figure 4.1) are intelligent objects that represent x, y,andz locations in space.
Each point has a unique number and, optionally, a unique name that can be used for additional
identiﬁcation and labeling.
You can view and change point properties in the AutoCAD Properties palette, as shown in
Creating Basic Points
You can create points many ways, using the Points menu from the Create Ground Data panel on
the Home tab. Points can also be imported from text ﬁles or external databases or converted from
AutoCAD, Land Desktop, or Softdesk point objects.
Before you begin creating points, it’s important to investigate which settings may make the
task easier. Individual point objects are placed on an object layer that controls their visibility,
which you can manage in both the Command settings and the Create Points dialogs. You can
also establish default style, default label style, and default elevations, names, and descriptions in
your Civil 3D template, which will make it easy to follow your company standard when creating