Project Reference Water culvert renewal – Royal Oak, Machen Caerphilly County Borough Council Background ERH was awarded a contract to renew a water culvert (a structure that allows water to flow from one side of the road to the other). In order to maintain the integrity and functionality of the structure, and to minimise future repair and maintenance costs, a survey had identified the need for remedial works & repairs. Works The project comprised of the taking down of a boundary retaining wall, excavation of a masonry box culvert, installation of two brick chambers, installation of a Weholite pipe and grouted surround and the rebuilding of a concrete block retaining wall including ancillary works. The project also included: ? Site clearance; ?

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