c3d-surfaces

Installation
SKILL.md

Civil 3D Surfaces

Use this skill when working with surface objects (TIN, Grid, Volume) - creating, modifying, querying, or analyzing surfaces.

Surface Class Hierarchy

Surface (base)
├── TinSurface          - Triangulated Irregular Network
├── GridSurface         - Regular grid of elevations
├── TinVolumeSurface    - Volume between two TIN surfaces
└── GridVolumeSurface   - Volume between two Grid surfaces

Namespace Conflict Warning

Surface exists in both Autodesk.AutoCAD.DatabaseServices and Autodesk.Civil.DatabaseServices. Use an alias:

Installs
9
GitHub Stars
4
First Seen
May 15, 2026