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AI Applications · Survey and Construction Management

Reconciling BIM with Survey Data

Reconciling survey data with BIM fails on two things: differing datums and differing expectations of what the model represents.

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Overview

  • Agree whether the model is as-designed, as-built or as-planned; deviation against the wrong baseline is meaningless.
  • Transform the survey into the project's model space explicitly, and record the transformation used.
  • Compare like with like: point cloud to mesh, or extracted contours to design contours.
  • Report deviation where it matters structurally — slab levels, kerb lines, column positions — not as a whole-site average.

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