You can extract AutoCAD entities from an Autodesk Civil 3D surface.
Extracting individual components from a surface enables you to manipulate these components without exploding the surface object. The surface data available to extract is based on the display properties of the selected surface.
Note: The extracted objects preserve the properties set in the current surface style.
The following table lists the extracted objects for each type of surface components.
| Surface component ... | Is extracted as ... |
|---|---|
| Points (2D and 3D) | Point objects |
| Triangles (2D and 3D) | 3D face objects |
| Border (2D) |
|
| Border (3D) |
|
| Major Contour (2D and 3D) | LWPOLYLINE object |
| Minor Contour (2D and 3D) | LWPOLYLINE object |
| User Contours (2D and 3D) | LWPOLYLINE object |
| Gridded (2D and 3D) |
|
| Directions (2D and 3D) | The type of object depends on the surface style settings. See To Create a Surface Style. |
| Elevations (2D and 3D) | |
| Slopes (2D and 3D) | |
| Slope Arrows (2D and 3D) | |
| Watersheds (2D and 3D) |
