Polystyrene Formers Used in the Core of a Pumping Chamber

On this project, the changing climate and age have necessitated replacing the existing pumping station, thereby minimising flood risk to 1,500 residents, 500 businesses and 9,700 hectares in the local area.

The pumping station will house 4 eel-friendly water pumps. This will enable it to pump 1.4 billion litres daily – put into context, 1 pump could empty an Olympic sized swimming pool in 3 seconds flat!

The contractor used polystyrene formers to form the complex suction box detail required for the pump hydraulics. The formers comprise of an 8 part unit, approximately 4.2m x 6m x 2m high that are fully recyclable.

They used Saint Gobain to supply 1400mm diameter ductile iron pipes for the four rising mains from the pumps. These have a self-anchoring gasket that negates the need for large thrust blocks due to the pipework pressure. Up until 2019, these were only manufactured up to 1000mm diameter, they are are the first contract in the country to employ self anchoring joints at 1400mm diameter.

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Entry submitted by Balfour Beatty


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