Articles & Case Studies

Polypipe meets attenuation needs of Kent housing development

Posted: Wednesday 25th September 2013

Experts at Polypipe, the UK’s leading manufacturer of plastic sustainable drainage and water management products, have created an innovative attenuation system for a housing development in the Chartham countryside.

Developer Pentland Homes Ltd required a drainage solution which controlled water discharge at a rate of 4 litres per second into an Environment Agency managed watercourse.

Working together from the early design stage, Polypipe’s water management specialists were able to utilise their market-leading 1500mm Ridgistorm-XL large diameter pipe to create a bespoke 303m3 attenuation tank, complete with prefabricated dry weather flow channel and a Stormcheck Vortex Flow Control Chamber to collect and restrict water in a public open space (POS).

Installed by T Kirwan Contractors, Ridgistorm-XL lent itself particularly well to this project, especially given the small area available at the time of installation.

Polypipe’s ability to prefabricate the Ridgistorm-XL system off site allowed for a speedier installation. The light weight nature of plastic pipes over traditional materials meant that a smaller 13.5 tonne excavator could be used, reducing installation costs and working around the access constraints of the restricted site.

Tim Barton, Director at Pentland Homes, said: “Polypipe’s in-depth understanding of the requirements for Section 104 adoption agreements undoubtedly added to the straight forward attenuation element of our exciting Kingfisher Place development.”

Bryan Potter, Site Foreman for T Kirwan Contractors, said: “Working with Polypipe on this project proved an excellent decision. Not only was their electro-fusion joint method very straight forward and easy to install, but the service we received was first class. Any questions that we had or advice we needed was easy to obtain thanks to the face-to-face contact we had with the Polypipe team throughout the project.”

Emma Nicholls, Marketing Manager at Polypipe, added: “The fact that our water management experts were involved from the initial design stage brought a number of advantages to the Kingfisher Place development. In addition to the ease of installation benefits and reduced health and safety risks from our prefabrication offering, we were also able to prove the tank’s structural strength for use with minimal cover when large loading is required in the future.”

Kingfisher Place is located by the River Great Stour and surrounded by the Kent Downs, a designated Area of Outstanding Natural Beauty.

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