Construction of new underground rail and road tunnels at Heathrow Airport has necessitated daily monitoring of surface levels in order to detect any early indications of excessive structural movement of runways, taxiways or buildings above the path of the tunnelling machines. Recent surface deformation monitoring projects have included the T5 Airside Road Tunnel, and the T5C Baggage Transfer Tunnel.
Conversely, surface construction works have sometimes necessitated the nightly deformation monitoring of the various existing railway tunnels (London Underground and Heathrow Express) running below Heathrow Airport. Recent tunnel deformation monitoring projects at Heathrow include Multi-Story Car Park West, T5 Airside Road Tunnel Portal, T5C Baggage Transfer Western Inteface Building, and Heathrow Eastern Terminal.
The Shard of Glass will be London’s tallest building. Mason designed and implemented a real-time monitoring system based on GPS receivers recording the position of the tower as it rises and with software developed internally to provide real-time positioning of four corners of the concrete structure.