摘要 |
An apparatus for flood defence comprises a plurality of slab units ( 3 ) rotatable about an axis ( 4 ) between a lowered position and a raised position which slab units ( 3 ) are substantially balanced about the axis ( 4 ). The slab units ( 3 ) form a path when in their lowered position, and form a flood barrier when in their raised position. When the slab units ( 3 ) are in their raised position, they form a seal with the base ( 5 ) of the apparatus and removable boards are placed in the gaps between adjacent raised slab units ( 3 ) and between a raised slab unit and an abutment. These boards are then clamped to seal the gaps.
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