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Norwest Holst Soil Engineering

Geotechnical contractor Norwest Holst Soil Engineering is carrying out the £0.3M site investigation for proposed upgrading of Black-friars Station in London. The work forms part of client Railtrack's Thameslink 2000 project. It involves building a new platform spanning the full width of the River Thames and capable of accommodating 12 carriage trains. Blackfriars Bridge will be strengthened to accept the new platforms and a low height canopy installed, ensuring views of the city skyline across to St Paul's Cathedral are not obstructed. Investigations into the construction of the bridge and the underlying geology is being undertaken before detailed design. Norwest is using heavy duty cable tool boring equipment working from two jack-up platforms either side of the bridge to characterise the riverbed. It is using its new multi-purpose Deltabase 510 rotary rig to core through the bridge structure. Consultant for the investigation is WS Atkins. Stand 9521

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