Transport for London Nine Elms Regeneration

In phase one, we utilised our MIRA GPR mobile mapping system to collect data in the carriageways. The system employs high-frequency, pulsed radio waves to map structures and features buried in the ground, and was mounted on a vehicle for the majority of the survey area to minimise disruption to the road network by removing the requirement for Traffic Management.

In phase two, the electro-magnetic data was surveyed on site using RD8000 transmitters and receivers, and the surveyed locations were marked on the ground with temporary spray paint. All positions were surveyed Topographically too, using Trimble Total Stations.

In phase three, our two-person team employed electro-magnetic and GPR methods to carry out the Clearance surveys, as well as comparing results with the previously issued survey data. They worked at night alongside Ringway Jacobs’ site teams, utilising the same pedestrian and Traffic Management services.