London Underground - 3D Laser Survey for Circle, Hammersmith & City and District Lines
London Underground - 3D Laser Survey for Circle, Hammersmith & City and District Lines
2 PagesLondon Underground - 3D Laser Survey for Circle, Hammersmith & City and District Lines – Clancy Docwra Description: 21km of laser surveys for brick tunnels and covered ways of the Circle, Hammersmith & City, and District lines. Challenges: Very tight completion timeframe. Key achievements and innovations: The use of ‘tunnelling’ surveying technique: a train-mounted tunnel inspection system that can inspect at 40km per hour, at a precision level of one millimetre, thanks to thecreation of a 3D map. This is carried out using a moving vehicle with six mounted laser cameras. Location: London Client: London Underground Value: £322k Completion: Sep-2014
