To Add Surface Point Data From AutoCAD Drawing Objects

Note: To add COGO points to surface data, add point groups. For more information, see To Add Point Groups To a Surface.

1. In the Toolspace, on the Prospector tab, expand the surface Definition collection, right-click , and click Add.
2. In the Add Points From Drawing Objects dialog box, select the object type from the Object Type list.
3. Click Maintain Edges From Objects if you are adding points from lines, 3D faces, or polyfaces, and you want to maintain the AutoCAD object edges. This prevents Autodesk Civil 3D from optimizing the edges.
4. In the Description field, enter a description for the object.
5. Click OK.
6. Select the object in the drawing or use any of the standard AutoCAD object selection methods.

The objects are added to the surface definition and are displayed in the surface Drawing Objects collection list view with their description and type.