3D LiDAR Scanning
Millimetre-Accurate As-Built Documentation and Deformation Analysis
Overview
LiDAR scanning produces millimetre-accurate three-dimensional models of existing structures by emitting millions of laser pulses and measuring their return time. The resulting point cloud captures the geometry of a structure as it actually exists — not as it was designed to exist.
For structural investigation, LiDAR provides the geometric truth that every subsequent calculation depends on. When assessing heritage buildings with no surviving original drawings, LiDAR scanning produces complete as-built documentation that makes structural analysis possible.
LiDAR is equally valuable for deformation analysis. By comparing scanned geometry against theoretical design geometry, SiteOps quantifies actual structural deformation — deflections, tilts, bulges, settlements — and determines whether observed deformation is within acceptable limits or indicates a structural concern.
SiteOps integrates LiDAR data directly into structural analysis workflows. Point cloud data is converted to analytical models for finite element analysis, enabling capacity calculations that reflect actual geometry rather than idealised design assumptions.
Applications
As-Built Documentation
Complete geometric documentation of existing structures where original drawings are unavailable or insufficient.
Deformation & Deflection Measurement
Quantifying structural deformation with millimetre precision across entire structures.
Heritage Building Recording
Digital recording of heritage structures for conservation planning and regulatory submission.
Change Detection & Monitoring
Comparing sequential scans to detect and quantify structural movement over time.
Clash Detection for Modifications
Precise spatial coordination for proposed structural modifications within existing structures.
Volume & Area Quantification
Accurate measurement of material volumes for remediation scope estimation.
Technical specifications
| Accuracy | ±1–2mm at 10m range |
|---|---|
| Point Density | Up to 2 million points per second |
| Range | 0.6m – 350m |
| Output | Registered point cloud, 3D mesh, 2D CAD extraction |
| Registration | Target-based and targetless alignment |
| Deliverables | Point cloud (.e57/.las), 3D model, floor plans & sections |
Related technologies
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FAQ
Common questions
When does SiteOps use LiDAR scanning?+
SiteOps deploys LiDAR whenever accurate as-built geometry is essential — no original drawings, suspected deformation, heritage recording requirements, or complex geometry.
How accurate is LiDAR scanning?+
Survey-grade terrestrial LiDAR achieves ±1–2mm accuracy at 10m range under normal conditions.
Can LiDAR be used in occupied buildings?+
Yes. LiDAR uses eye-safe laser pulses and can be performed in occupied buildings during normal operations.
Deploy LiDAR on your asset
Share drawings, exposure conditions, and programme constraints — we will propose an investigation scope aligned to Australian standards and your risk profile.
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