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Flood barrier, for sea or river defences, consists of flat foundation with horizontal recess for barrier wall which pivots from horizontal to vertical as required
Flood barrier, for sea or river defences, consists of flat foundation with horizontal recess for barrier wall which pivots from horizontal to vertical as required
A set of flood defences consists of an essentially flat foundation with a horizontal recess for a barrier wall which pivots from the horizontal to the vertical as required.
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