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c3d-corridors

Automate Civil 3D corridor modeling via the .NET API.

3|Updated Feb 17, 2026
Search Tags:#baselines#regions#assemblies#autodesk#surfaces#corridors#civil3d
One-click install
npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-corridors
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: c3d-corridors
Source: https://github.com/hebackus/c3d-api-plugin/tree/main/skills/c3d-corridors
Command: npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-corridors

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Corridor-based automation and modeling for Civil 3D projects, enabling programmatic creation, inspection, and management of corridors including baselines, regions, assemblies, subassemblies, and corridor surfaces to streamline design workflows.

Core Features & Use Cases

  • Create and modify corridors by adding baselines, regions, and assemblies, and by configuring surface outputs for finished road corridors.
  • Read, update, and organize baselines and regions (split, merge, remove) and manage region-level targets and solids exports.
  • Work with corridor surfaces: create, render,boundaries, masks, elevations sampling, and expose surface properties for design visualization.
  • Manage assemblies and subassemblies: create, copy, mirror, import, and apply subassemblies along corridors, including applied assemblies with calculated shapes, links, and points.
  • Code-set style integration and cross-references: set corridor code styles, reference alignments and profiles, and access related developer guides and data structures.
  • Typical workflow: model a full corridor from alignment and profile to finished surface, then iterate revisions and export geometry for further analysis.

Quick Start

Create a new corridor named "Main Road" with a centerline baseline and a corresponding profile, add a region with an assembly, rebuild the corridor, and export solids for use in downstream analysis.

Frequently Asked Questions about c3d-corridors

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate Civil 3D corridor modeling using the .NET API?▼

Automate Civil 3D corridor modeling by using the .NET API to programmatically manage baselines, regions, assemblies, and corridor surfaces. This streamlines design workflows for linear projects by enabling code-driven creation and inspection.

What is the best way to manage baselines and regions in a Civil 3D corridor?▼

The best way to manage baselines and regions in a Civil 3D corridor is through programmatic operations that read, update, split, merge, and remove them. This allows precise control over region-level targets and assemblies.

Can I export corridor solids from Civil 3D for downstream analysis?▼

Yes, you can export corridor solids from Civil 3D for downstream analysis. After modeling a full corridor from alignment and profile to finished surface, you can iterate revisions and export the resulting geometry.

How do you create and manage corridor surfaces in Civil 3D?▼

Create and manage corridor surfaces in Civil 3D by configuring boundaries, masks, and elevation sampling. This exposes surface properties for finished road corridors and enables design visualization.

Does this corridor automation approach work with rail and road linear projects?▼

Yes, this corridor automation approach works for road, rail, and other linear projects. It requires Civil 3D .NET API access to handle alignments, profiles, and surface data for these infrastructure designs.

How do I apply subassemblies along a Civil 3D corridor programmatically?▼

Apply subassemblies along a Civil 3D corridor programmatically by creating, copying, mirroring, and importing them. This process includes managing applied assemblies with calculated shapes, links, and points.

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