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Bill mounts for cracked Scarborough sea defence

NEWS

SCARBOROUGH BOROUGH Council faces a £140,000 bill for further study into the cracked sea defence units in its new £33M breakwater, after designers and contractors failed to agree on a cause.

The study will be carried out by internationally known Danish consultant Cowi and should be complete by the end of January.

Some 15 of 4,000 specially shaped Accropode units were found to have broken up this summer (NCE 16 September).

The 9m 3specially shaped concrete elements had either split down the middle or had lost one or more of the 'arms' which lock together to form a wave energy absorbing breakwater structure.

Engineers from contractor Nuttall, designer High Point Rendel and the borough council have been examining the structures. Additional advice has been given by hydraulics research specialist HR Wallingford and Sogreah, the original designer of the Accropode's carefully tailored shape and placement system.

But the council said this week that it wanted more information.

'Before any remedial action can begin it is vital the extent and source of the problem is properly investigated, ' said Godfrey Allanson, cabinet member for environment, transport and public health.

'There is a need for a forensic technical investigation into the design, manufacture and installation of the Accropodes to establish the nature of the problem and ensure it is properly rectified.'

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