Civil engineering design and documentation software
Experience more efficient workflows for surface modeling, corridor modeling, site design, storm and sanitary, and plan production and documentation. Surface modeling
Point clouds
Use and display point cloud data.

• Surface creation from point cloud data
  Create TIN surfaces from point cloud data.
• Design surface creation
  Use tools to create dynamic surfaces.
• Site and survey
  Parcel design
  Automated parcel design tools.
• Grading
  Terrain models for grading.
• Relative elevation feature lines
  Obtain feature lines from a surface or relative to a surface, so feature lines update with changes to the surface.
• Corridor modeling
  Corridor design
  Tools for corridor modeling.
• Advanced roundabout design
  Bring new roundabout designs into Civil 3D.
• Extract corridor feature line workflow
  Easily extract multiple feature lines.
• Storm and sanitary
  Gravity pipe networks
  Tools for sanitary and storm drainage systems.
• Storm and Sanitary Analysis software
  Dynamic models enable stormwater management.
• Analyze gravity networks
  Measure pipes and inverts to HEC-22 2009 standards.
• Plan production and documentation
  Plan and profile sheet generation
  Create plan/plan and profile/profile sheets by including multiple plan or profile views on a single sheet.
• QTO and earthwork calculations
  Extract and report material volumes and analyze quantities from materials and sectional or profile information.
• Construction documentation
  Generate annotated production plans.
• Interoperability
  Corridor data shortcut (DREF)
  Create and share data shortcuts for corridors.
• 3ds Max interoperability
  Create professional-quality visualizations.
• IFC import and export
  Import and export AutoCAD solids to IFC files.

System requirements for Civil 3D 2021
Operating System
64-bit Microsoft® Windows® 10
64-bit Microsoft Windows 8.1
See Autodesk’s Product Support Lifecycle for support information.
Processor Minimum: 2.5–2.9 GHz processor
Recommended: 3+ GHz processor
Memory 16 GB
Display Resolution Conventional Displays: 1920 x 1080 with True Color
High Resolution & 4K Displays: Resolutions up to 3840 x 2160 supported on Windows 10, 64 bit systems (with capable display card)
Display Card Minimum: 1 GB GPU with 29 GB/s Bandwidth and DirectX 11 compliant
Recommended: 4 GB GPU with 106 GB/s Bandwidth and DirectX 11 compliant
Disk Space 16 GB
Pointing Device MS-Mouse compliant
File Format Changes No DWG or Civil 3D Object format changes.

Bridge and piping features added in 2021 may display as proxy objects in prior versions.
.NET Framework Version 4.8