3D LiDAR Scanning

LiDAR scanners emit laser pulses measuring distance to surfaces, generating millions of data points that reconstruct three-dimensional geometry. Resulting point clouds document as-built conditions including structural deformation, settlement, modifications, and deterioration patterns.

Applications:

• As-built documentation for structures lacking reliable drawings
• Deformation mapping identifying structural movement and distress patterns
• Scan-to-BIM model development for design coordination
• Volume calculations for material quantification
• Integration with structural analysis models accounting for actual geometry
• Progress monitoring during remediation comparing pre/post-intervention conditions
• Heritage preservation documentation without physical contact

Victory Hotel Case Study: Heritage-listed building destroyed by fire in 2008 required structural investigation for reconstruction. Original Victorian-era drawings incomplete and inaccurate. 3D LiDAR scanning captured complete as-built geometry of surviving structure, enabling accurate structural analysis and design documentation. Point cloud data eliminated field verification requirements during design, reducing consultant site visits and providing fabricators with direct-to-manufacture geometry. Investigation including LiDAR documentation totaled ~$60,000, avoiding approximately $500,000-$1,000,000 in unnecessary underpinning and temporary works through accurate foundation condition mapping.

Point cloud data integrates with structural analysis software, enabling modeling of actual geometry rather than idealized conditions. This is critical for heritage structures where deviations from original design (settlement, modifications, deterioration) significantly impact structural behavior.

For complex facades, ornate architectural elements, or buildings with limited accessibility, LiDAR scanning provides documentation that traditional survey methods cannot achieve. Data remains available throughout project lifecycle for reference, change detection, and future work planning.