About Survey Objects

Survey networks and figures persist in AutoCAD Civil 3D drawings as drawing objects.

• Network object. Represents a survey network or traverse in the drawing. The network object is a read-only object that cannot be edited in the drawing. If the network is modified in the database, the survey network displayed on the Survey tab in Toolspace indicates that it needs to be updated.
• Figure object. Represents a survey figure in a drawing.

  The figure object can be edited in the drawing (depending on how the figure is defined), but it displays as out-of-sync with the survey database. The survey database can be updated from the figure drawing object. If other drawings have the same figure in a drawing and the survey database has been updated, their drawing figures are shown as out-of-date and can be updated from the survey database.

  When a figure with a Lot Line property is inserted into the drawing, an AutoCAD Civil 3D site is created in the drawing (if it does not exist) and parcel segment objects are created in the site that is specified for the figure. If the figure is closed, a parcel object of the same geometry is added. If not, then parcel segments are added to the site for the figure geometry.

• Survey Point. A special type of COGO Point that is read-only in a drawing session. However, the display properties of a Survey Point can be modified in the points or point groups collection on the Prospector tab in Toolspace. A survey point is read-only in the drawing, because a survey point may have dependent data, such as an Angle, Distance, Vertical Angle, Prism Height, from a specific instrument setup.

Survey drawing network and figure objects are displayed in the Toolspace Prospector tab under the Survey collection.