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LANDSCAPING & EXTERNAL FINISHES; RAINWATER & GREYWATER PRODUCTS 53


Polypipe’s thermoplastic pipe products deliver vital infrastructure


infrastructure to the innovative Graven Hill project site in Bicester, Oxfordshire. The Graven Hill project is set to become the


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UK’s largest self build community, offering plots for 1,900 homes across the site, with accepted planning for further developments including a primary school, pubs, and convenience shops. The site, located on 188 hectares of land formerly owned by the Ministry of Defence, will provide purchasers with the chance to build their own home, with a focus on energy efficient materials, modular construction methods, and contemporary design. As the UK’s leading manufacturer of sustainable drainage and water management systems, Polypipe worked with project partners to deliver a more durable and cost-effective alternative plastic solution to the original clay and concrete system specified. Following their previous positive experiences with Polypipe, contractor Careys Civil Engineering recom- mended that the original design specification be changed to a thermoplastic solution incorporating Polysewer and Ridgisewer.


olypipe has supplied a wide range of its thermoplastic pipe products for foul water management, delivering vital


Polypipe’s technical experts assisted with any queries about the manufacture and installation of the alternative system, and highlighted the advantages that plastic could deliver over tradi- tional materials. Polypipe’s plastic systems are able to offer


increased health and safety on site, as thanks to being lighter in weight than concrete, they are easier and quicker to install. Made of long-life PVCu, the structured wall pipes offer ring stiffness and strength, while ensuring flexibility to allow for ground movement and differential settlement. Polypipe’s plastic products can be manufactured to exact specifications for each individual project, and delivered at the time they are required, reducing installation and labour time on site. The plastic solution for the Graven Hill project


was successfully adopted by the local water authority, with the final design showcasing Polypipe’s water management product range. The solution included a system for foul water management using over 2,250m of Polypipe’s Polysewer and 330m of Ridgisewer PVCu structured wall pipes, along with the necessary associated bends and fittings required to fit the pipe runs.


To capture, store and control surface water


run-off, over 220m of Ridgistorm-XL large diameter pipes were supplied in a stiffness class of SN2 to suit the site’s ground conditions, together with two tanks manufactured using Polystorm-R cells. Polypipe’s Polystorm-R cells boast a 95 per cent void ratio, with a load bearing capacity of up to 61 tonnes per square metre, making them ideally suited for trafficked and loaded applications at greater depths. The two tanks will provide over 336m3 of water storage, meaning that the Graven Hill site will have the capacity to store and manage excess water in the event of extreme weather events, ensuring flood resilience.


01509 615 100 www.polypipe.com


WWW.HBDONLINE.CO.UK


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