TIN Surface & Contours

Accurate surface modeling for confident design - SURVAIR delivers TIN surfaces and contour outputs that help engineers, architects, and surveyors visualize terrain, perform volume analysis, and create reliable grading plans using clean, drone-captured data tailored for CAD and GIS systems.

Photgrammetry image of a parking lot with contours with nearby forest as captured from a drone in an aerial view

What Powers Our TIN and Contour Precision

TIN Surface Modeling

Triangulated 3D surfaces that reflect slope variations & ground transitions with high fidelity.

Contour Generation

Deliverables include 1’, 2’, or 5’ interval contours, processed cleanly for Civil 3D workflows.

Breakline Integration

Define ridges, edges, and slope limits to improve model reliability and grading precision.

Volume Calculation Support

Use TIN data for fast and accurate cut/fill estimates, excavation planning, and material tracking.

CAD-Ready Formats

Outputs available in .xml, .dwg, .dxf, or PDF for seamless integration with your design software.

Engineered Surfaces That Work as Hard as You Do

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Reliable ground data builds better designs. SURVAIR delivers TIN surfaces and contour files that plug directly into engineering workflows - no cleanup, no delays.

We help civil teams and land developers reduce rework by modeling real-world surfaces with precision - saving time, improving accuracy, and supporting better outcomes from day one.

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Accurate Surface Models for Smarter Engineering

SURVAIR’s TIN Surface & Contours service converts drone-captured spatial data into engineering-ready Triangulated Irregular Network (TIN) models and custom contour lines. Whether sourced from LiDAR or photogrammetry, each surface is processed with terrain breaklines to reflect the true ground profile.

These models support cut-and-fill analysis, stormwater design, and grading accuracy across infrastructure, commercial, and civil development projects. Outputs are fully CAD-compatible, QA-verified, and tailored to your design environment - eliminating guesswork from early-stage planning.