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36 GROUNDWORKS & SEWAGE TREATMENT Polypipe’s Ridgistorm-XL delivers benefits for Hull project


water conveyance and attenuation solution for a new Keepmoat Regeneration residential development in Hull. Polypipe delivered a system that demonstrates how large diameter pipes can meet strict Sewers for Adoption guidelines, while managing the traffic load from the road system. The Portobello Street development is located


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approximately three miles away from Hull city centre and will provide 142 new homes for Homegroup and Hull City Council as part of the regeneration of this area of the city. Polypipe was approached to assist with the


design and manufacture of a solution that met the requirements of Yorkshire Water and Hull City Council. Polypipe advised the use of large diameter plastic piping and modular manholes, and worked closely with Hull City Council and Yorkshire Water to present the benefits that their Ridgistorm-XL large diameter plastic pipe system could deliver over a traditional concrete system. Working with the project Consulting


Engineer, Polypipe assisted the design and manufacture of a solution that fulfilled all


Sewers for Adoption criteria, as well as achieving the conveyance and attenuation needs of the site. The engineered system design gained full section 104 approval for the adoption of surface water run-off into their watercourse, and section 38 approval for the installation of the system on the development site. The final design used over 231m of Polypipe’s 1,200mm Ridgistorm-XL large diameter plastic pipework. The adaptability of the thermoplastic system meant that the Polypipe pre-fabrication team could manufacture the pipework in a stiffness class tailored to the specific ground conditions at the location, without sacrificing overall strength and resilience.


olypipe, a leading manufacturer of sustainable drainage and water manage- ment systems, has provided a complete


The Ridgistorm-XL pipes were used to form


four tanks to attenuate and convey surface water-run off from the development. Each tank was linked to a flow control chamber featuring a flow control unit and penstock, to manage the subsequent release of surface water run-off into the approved watercourse. A pre-installed weirwall in each of the chambers also provided a stable end connection to Yorkshire Water’s existing drainage system. Furthermore, Polypipe was able to manufacture and supply pipes and chambers with spigot and socket jointing. With the thermoplastic structured wall system being up to 94 per cent lighter in weight than concrete, it is easier to handle and quicker to install, which ensured efficient installation on the Portobello Street site. The design also included 12 pre-fabricated


Ridgistorm-XL Manholes, 10 of which were supplied in a diameter of 2,100mm, together with one 2,400mm and one 1,800mm in diameter. Polypipe’s pre-fabricated manholes are modular, ready-to-install access points that can be integrated at any part of network system.


01709 770000 www.polypipe.com/wms


DRAINAGE SOLUTIONS


Compact, light and powerful submersible drainage pumps suitable for groundwater containing sand and silt.





A wastewater treatment unit, designed to work in harsh climates. The unit is based on a  tolerates load variations and 


Adoptable Pumping Stations


 pumping stations designed to Sewers for Adoption 7th


Edition standards.


T-T have advanced knowledge in   concept through to adoption.


CONTACT US FOR FURTHER INFORMATION ttpumps.com


WWW.HBDONLINE.CO.UK


+44 (0) 1630 647200


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