After you have Land Desktop data exported to a LandXML file, you can easily import it into Autodesk Civil 3D using the LandXML Import command.
To import data from a LandXML file into Autodesk Civil 3D, first specify the import settings that control the data for import. Then, select the files and the specific data in the file that you want to import.
The LandXML import functionality automatically handles the conversion between the units specified in the LandXML file and the current drawing units specified in Autodesk Civil 3D.
It is important to note that LandXML does not transform coordinate systems automatically. Therefore, no specific coordinate system transformation is applied other than what is specified by the translation and rotation settings.
- In Autodesk Civil 3D, on the ribbon, click Insert tab
Import panel LandXML Find, or enter LandXMLIn at the command line. - In the Import LandXML dialog box, select or browse to the LandXML (*.xml) file you want to import. Click Open.
- In the Import LandXML dialog box, select a site for the plots. For the alignments you can specify a site or specify None.
- The data tree displays each of the major data collections in the LandXML file. Use the data tree to:
- Navigate to a data collection and view its subcomponents.
- Expand the collections. Select or clear the check boxes to filter the data types that you want to import into the drawing. By default, all data components are selected for import.
Note: The check boxes have a tri-state display. If only some objects are selected under a collection, the check box is dimmed
; if all the items are selected, the check box is selected 
; if all the items below the collection are cleared, the check box for the collection is cleared 
. - Click OK to import the LandXML file.
After you click OK, the data is imported into the drawing. The data components are added to the applicable data collections in the Prospector tree.