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JOINT VENTURE

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JOINT VENTURE contractor Nishimatsu/Cementation/Skan ska is fixing base slab reinforcement in the 38m deep Corsica Street ventilation and access shaft for the Channel Tunnel Rail Link tunnels in Islington, north London. The 18m internal diameter shaft bells out to 19m for the lower 13m and is lined with sprayed concrete varying in thickness from 350mm at the top to between 450mm and 500mm at the base. Designed by Rail Link Engineering, the shaft stands in London Clay and the Woolwich and Reading beds.

Installation of the secondary concrete lining is expected to begin in November.

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