Polypipe has helped deliver a unique drainage solution for Northern Ireland Water's Carrowreagh Storm Sewer Improvement Scheme in Dundonald, near Belfast.

An attenuation tank, created from Polypipe's Polystorm-R and Ridgistorm-XL products, forms an important feature of the £600,000 essential storm water improvement works, which are being carried out in response to flooding in a residential area and to meet future Rivers Agency standards.

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Selected following a competitive tender process, Polypipe's technical team worked closely with Northern Ireland Water, specialist installers Charcon Construction Solutions and main contractor Graham Construction to devise a bespoke,easy-to-install modular storage tank to the exacting volumes required, complete with a number of two-part access chambers to aid future inspection of the structure.

It is the first time a sustainable urban drainage system of this kind has been utilised by Northern Ireland Water and was chosen for its ability to deliver more efficient environmentally friendly processes,and speed up the construction of the storm tank over traditional materials.

The experts at Polypipe created bespoke 900mm Ridgistorm-XL outlet pipes with 300mm connections to the storm tank,as an innovative, light weight alternative to existing concrete piping.