Laser scanning is a relatively new technology, having been used as a precise survey instrument only since 1997. It's quickly becoming the new industry standard as a way to make very accurate measurements in complicated environments. This is precisely why using this technology is the best solution for measuring as-built conditions inside buildings. This instrument collects survey data points at a rate of 50,000 points per second. These models are then used to create 2D civil or architectural drawings, 3D computer models, and final survey documents.
Underground Voids and other anomalies can also be detected using GPR to further assist in the investigation of area with high dolomitic substrate, as well as existing structures.
Other specialist geophysics surveys can be carried out for purposes such as geological investigations, environmental hazard detection, structural assessments & brownfield / landfill site characterizations.