Normanton WTW

In operation since the 1950s, Normanton Water Treatment Works sits adjacent to the Wakefield Europort, on the M62 Motorway.

CPC Civils were appointed to construct a new build inlet works.

It would integrate into the existing structure and include:

• a motor control centre
• wash-water room
• new screens
• compactors
• a Formula A overflow screen
• drainage
• road slabs
• duct feeds
• storm overflow pipework

The works undertaken would increase the capacity and efficiency of the Sewage Treatment Works.

The structure design would enable CPC Civils to construct the build off line, with three final connections towards the end of the programme. This would involve partial shutdowns and over pumping 400 litres per second of raw effluent.

CPC Civils were involved in the design process prior to contract award. Our team would play a major role in phasing and redesigning parts of the structure to increase buildability, reduce materials usage and better the programme.

At CPC Civils’ request, additional columns would replace drop beams following their removal from the design. Also, movement joints were relocated to allow the three phases of the structure to be run concurrently.

CPC Civils would use the following methods to carry out the works:

• Construct columns and shear walls using proprietary formwork systems.
• Column boxes and pours using mechanical access – reducing level of temporary works requirements and increasing the safety of access and egress.
• Construct suspended slabs using traditional prop and beam systems, due to the complex layout and level changes in the structure
• Achieve channel benching using traditional formwork.