Skip to main content

Note: All drawings used in these tutorials are available in the Tutorials Drawings folder. If you want to save your work from these tutorials, save the drawings to the My Tutorial Data folder so that you do not overwrite the original drawings.


This tutorial demonstrates several features that can help you manage large surfaces efficiently in Autodesk Civil 3D.

Because surfaces can contain large amounts of data, it is important to use only as much data is necessary for the current task. For example, when building a surface from LIDAR data, the corresponding point file can contain millions of points. If all of those points are included in the surface definition, it can take a considerable amount of time to rebuild the surface. If you restrict the points that the surface uses to a given area, the surface rebuilds faster and the drawing size is smaller.

The exercises in this tutorial demonstrate how to insert a relatively dense LIDAR point file into a surface, but restrict the amount of data that is actually used.

Creative Commons License

Except where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Please see the Autodesk Creative Commons FAQ for more information.