The following example is based on a case study conducted using Trimble and Leica survey data collection equipment. A small site survey was performed to demonstrate that raw survey data from equipment providers can be converted and imported into AutoCAD Civil 3D. These companies, and others, directly support AutoCAD Civil 3D and demonstrate an advantage that AutoCAD Civil 3D has by using the field book file data format.
This section describes best practices for preparing to import survey data into AutoCAD Civil 3D. For more information about Survey Field to Finish, see Survey Field to Finish in the Help system. The basic recommended sequence is as follows:
If your data collector does not support the use of a Linework Code Set, then a convention such as the figure command BEG is used to indicate the beginning of a figure line, such may be the case with some data collection conversion tools that do not support the new Field to Finish features of AutoCAD Civil 3D 2010.
Inserting a figure command into the point description during the survey data collection phase of a project automates the process of creating line work when the data is later imported into AutoCAD Civil 3D 2010.
Figure 1: Specify coding methods for consistency
Figure 2: Create description keys editor
Figure 3: Specify how imported line work is drawn
Figure 4: Aerial photo of the site survey field
Figure 5: Imported survey data
Figure 6: Surface created from breaklines and point groups with specified contour style
Use the Trimble Link add-on to AutoCAD Civil 3D (available from www.trimble.com), to connect directly to the equipment controller and/or to the location where the raw .job file is stored.
The Leica X-Change software (www.leica-geosystems.com), uses the DBX database as the raw survey data format. The X-Change add-on to AutoCAD Civil 3D converts the raw format to a field book file, that can be imported into AutoCAD Civil 3D.