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Specialist Railways

Specialist Railways

Roof laboratory and test track

Cromar White Ltd won the prestigious contract to install a 'dog-bone' shaped seven and a quarter inch gauge railway on the roof of the new GRACE building, Nottingham University which has been designed to create a state of the art laboratory. It has a series of stable monuments which are supported through the whole of the building and into the foundations. These will provide high tolerance platforms for continuously operating GNSS receivers used for both earth movement research and to provide support to the RTK Network project. The roof will be surfaced with a multipath reducing surface and obstructions have been designed to be at a minimum.

A unique facility of the "roof lab" will be a stable track system which will allow experiments of a kinematic nature over a known trajectory. This will be a wireless controlled system with high precision repeatability.


For more information on the GRACE department, please visit