The Forth Estuary Transport Authority (FETA) has awarded C Spencer and Bennett Associates a £7.8m contract to install dehumidification equipment on the main cables of the bridge.
C Spencer and Bennett Associates were involved in the unwrapping and original internal investigation of the cables of the
The discovery of corrosion in older suspension bridges in the
A package of measures was put in place by FETA to monitor the corrosion and minimise further deterioration. Dehumidification was quickly identified as the best line of defence against further corrosion.
C Spencer and Bennett Associates will install equipment that will inject dry air into the main two cables of the
Bennett Associates will design the temporary works and gantries to enable equipment to be moved around the structure whilst works are being carried out. They will also provide the mechanical design for the injection system exhausts.
C Spencer and Bennett Associates are currently working on preparatory design work on the dehumidification system and access platforms. The work itself is due to begin in April 2007 and installation is expected to be complete by September 2009.
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