An area of over 4ha was surveyed in total to locate underground utilities, voids and anomalies, using electro-magnetic and ground-probing radar equipment, and all located items were surveyed, topographically, using Total Stations. A grid of levels was surveyed across the pavements to record all pad levels, joints, paint markings, service covers, ground lighting and changes of surface.
The survey was carried out with high precision – all survey points being tied into the Manchester Airport Grid and Datum.
The combined Topographical and Utility Survey was undertaken over three weeks, by a three person survey team, who worked only during daylight hours. Our team was escorted airside, with their vehicles and equipment, each day, which remained open to air traffic movements throughout the survey.