TerraCAD Platform

Intelligent automation for civil engineering and land surveying

End-to-End Automation

TerraCAD transforms raw survey data into production-ready CAD drawings through an intelligent pipeline that combines multiple AI techniques with deterministic engineering rules.

Unlike generic AI tools, TerraCAD understands the specific requirements of civil engineering: topology constraints, survey standards, drafting conventions, and the precision requirements that define professional practice.

  • Process total station, GPS, LiDAR, and photogrammetry data
  • Automatic feature classification with 80%+ accuracy
  • Platform-agnostic intermediate specification
  • Native output to multiple CAD platforms
Input Raw Survey Data
Classify Hybrid AI Engine
Generate ICS Specification
Output Native CAD

Hybrid Classification Engine

Our classification system combines multiple approaches to achieve accuracy that no single method could deliver alone. By fusing rule-based parsing, spatial analysis, elevation analysis, and machine learning, we create a robust system that handles the variability inherent in real-world survey data.

  • Rule-Based Parsing: Interprets surveyor codes, descriptions, and naming conventions using domain-specific lookup tables
  • Spatial Clustering: Groups related features using adaptive density-based algorithms
  • Elevation Analysis: Identifies breaklines, ridges, and topographic features from gradient analysis
  • Supervised ML: Random forest classifier trained on labeled survey datasets
  • Weighted Voting: Combines all four branches with confidence scoring
Rules
25%
Spatial
25%
Elevation
25%
ML
25%
Weighted Voting
≥80% Accuracy

Platform-Agnostic Specification

At the heart of TerraCAD is our Intermediate CAD Specification (ICS)—a platform-neutral representation that captures not just geometry, but topology, metadata, and engineering constraints.

This "Rosetta Stone" approach means we can generate output for any CAD platform without rebuilding the entire pipeline. It also ensures deterministic behavior: the same inputs always produce the same outputs.

  • Geometric Primitives: Points, lines, polylines, curves, surfaces
  • Topological Relationships: Closure, tangency, perpendicularity constraints
  • Metadata Attributes: Layers, styles, annotations, properties
  • Design Constraints: Engineering rules and standards compliance
// ICS Specification
{
"primitives": [...],
"topology": {...},
"metadata": {...},
"constraints": [...]
}
↓ Deterministic Translation ↓
DWG DGN IFC LandXML

Human-in-the-Loop Learning

TerraCAD isn't a static tool—it's a system that learns from every interaction. When engineers make corrections to AI-generated geometry, those corrections are captured, encoded, and used to improve future outputs.

This reinforcement learning approach means the system continuously improves while preserving institutional knowledge within your organization.

  • Correction Capture: Monitors user modifications via CAD API
  • Geometric Delta Encoding: Preserves topological relationships
  • Prioritized Replay: Focuses learning on high-impact corrections
  • Staged Deployment: Canary testing before broad rollout
  • Rollback Protection: Automatic reversion if quality degrades
Continuous
Learning
Generate
Correct
Learn
Improve

Native Multi-Platform Output

TerraCAD generates native CAD objects—not geometry imports. This means dynamic Civil 3D surfaces that rebuild when inputs change, MicroStation cells that reference properly, and Trimble projects that integrate with field workflows.

  • AutoCAD / Civil 3D: Native DWG via Autodesk .NET API
  • Bentley MicroStation: DGN via CONNECT SDK
  • Trimble Business Center: Native project files via Trimble SDK
  • BricsCAD: DWG via BRX API
  • Open Formats: LandXML, IFC for BIM workflows
Civil 3D
Autodesk
MicroStation
Bentley
TBC
Trimble
BricsCAD
Bricsys

Protected by Innovation

Our technology is protected by a comprehensive 12-patent portfolio covering the complete autonomous engineering pipeline—from data ingestion through CAD generation, including our human-in-the-loop learning architecture.

12
Patents Filed
500+
Claims
2025
Priority Date

Interested in TerraCAD?

We're working with select engineering firms and CAD vendors to refine our platform. Get in touch to learn more.

Contact Us