Versatile flood barrier that doubles as a walkway is launched

摘要

A new low cost self-erecting flood barrier, that can double up as a waterside walkway when not in use, has been devised by a geotechnical academic from Nottingham Trent University. Known as the "Greenwood flood barrier", the wooden cover lies horizontally on a concrete slab and floats upwards when inundated with water to form the wall of the flood defence.