Civil 3D Surface Extraction Tips
An IMAGINiT tech tip that that demos some useful How to Tips that extract useful area information and linear data from Civil 3D Surfaces.
See the IMAGINiT Technologies YouTube Channel.
These Surface extraction methods work on more than holes and piles in Civil 3D. That is way to easy to miss.
The Minimum Distance trick can also generate useful and editable design control from unexpected and temporary Surface sources in Civil 3D.