Civil 3D Corridors

Use this skill when working with corridors - creating, listing, accessing baselines, assemblies, feature lines, corridor surfaces, and styles.

Corridor Overview

A corridor represents a path (road, trail, railroad). Its geometry is defined by:

• Baseline = alignment (horizontal) + profile (vertical) = 3D centerline
• Assemblies = cross-sectional shapes placed at stations along baselines
• Feature lines = connecting common points in assemblies along the baseline
• Corridor surfaces = surfaces representing the finished roadway

Creating Corridors

CivilDocument doc = CivilApplication.ActiveDocument;

// Create an empty corridor
ObjectId corridorId = doc.CorridorCollection.Add("My Corridor");