What Is LiDAR Scanning in Surveying?

LiDAR (Light Detection and Ranging) uses laser pulses to measure millions of distances per second, building a dense 3D point cloud of terrain, buildings and infrastructure. It is used both from tripod‑mounted scanners and from drones or aircraft, providing a powerful way to capture complex sites quickly.

What to Look For

• Your project involves complex structures, curved surfaces or heritage fabric
• Elevation or façade detail is critical to design or conservation
• Large sites must be modelled in 3D for design or visual impact assessment
• Traditional methods would be too slow or disruptive
• You need accurate as‑built records for handover or facilities management
• Stakeholders expect 3D visualisations or BIM models

How We Diagnose the Problem

LiDAR scanners emit laser pulses and measure the time taken for light to return from surfaces, calculating distance. Combining many angles and observations produces a 3D point cloud. Registration aligns multiple scans into a single dataset, which can then be modelled into surfaces, meshes or BIM elements.

How We Fix It

Our partners specify LiDAR surveys where they add clear value over conventional methods. You receive point clouds, CAD drawings or models at an agreed level of detail, along with documentation of accuracy and limitations so designers and engineers can use the data appropriately.