Autodesk Subassembly Composer for Autodesk Civil 3D is included as an additional component available for installation with Autodesk Civil 3D 2026.
- What's New in Civil 3D
- Release Notes
- Help
- Drainage Design and Analysis Tools
- Tutorials
- Best Practices Guide
- Have You Tried
- Subassembly Reference
- Subassembly Composer Help
- Project Explorer Help
- IFC 4.3 Extension for Autodesk Civil 3D
- Dynamo for Civil 3D
- Survey and Transform Tools for Coordinate Geometry (in English only)
- Infrastructure Content Authoring
- Content Browser Help
- Object Enabler Help
- CAiCE Translator Help
- API Reference Guide
- Developer's Guide
- Learn AutoCAD Map 3D
- Use AutoCAD Map 3D
- Customize AutoCAD Map 3D
- AutoCAD User's Guide
- Customization and Administration Guides
- AutoLISP: Developer's Guide
- AutoLISP: Reference
- Autodesk Civil 3D Installation