In order to manage surface water run-off from the hard standing areas of the new luxury apartment development, a below-ground SUDS solution was required to fit within the development footprint. However, the undulation of the landscaped areas of the site required the drainage application to be installed on a slope. A bespoke hybrid solution was designed which integrated the Polystorm and Polystorm Lite stormwater management cells. Over 14,000 Polystorm and Polystorm Lite Modular cells were installed on the site.

A large number of manholes were required on the project as part of the overall foul sewer system adopted by Wessex Water and CJL required a solution which reduced the potential for leakage and groundwater contamination. Polypipe WMS supplied over 70 bespoke sealed manholes for the foul water drainage scheme. Constructed off-site at Polypipe WMS' Fabrications Department, each unit was pre-fabricated so it arrived on-site ready to install. Installed with a concrete bed and surround, each manhole is capable of resisting floatation caused by the high water table.

The construction of an extension to the production facility of casting specialist, Beighton Construction, required a sustainable drainage solution to manage surface water run-off from a new car park. The project required a shallow installation to reduce the amount of cover and keep installation times to a minimum. Utilising its Polystorm and Polystorm Xtra modular cell systems, Polypipe WMS designed and supplied a hybrid structure to attenuate surface water run-off from the car park and other hard standing areas. The handling and health and safety benefits of both cells ensured that the complete structure was installed on-site in only a couple of days.

Operated by Miller Argent, the Ffos-y-fran Land Reclamation project is the third and final phase of the East Merthyr Reclamation Scheme designed to reclaim 367 hectares of derelict land. Polypipe WMS demonstrated cost efficiencies, improved performance and reduced installation time by designing a solution using its Ridgistorm-XL large diameter pipe. By using Ridgistorm-XL's patented electro-fusion jointing process, Polypipe WMS's skilled installation team was able to achieve quicker and safer installation in comparison with other large diameter pipe solutions. This method guarantees 100% seal tightness and eliminates leakage and joint failure within the pipeline. Once installed, the re-routed river could flow through the Ridgistorm-XL pipeline.

With a storage capacity of one million litres, the Ridgistorm-XL structure will manage surface water run-off from all hard standing areas of the new cattle market, before controlling its release back into the drainage network. Polypipe WMS also designed and fabricated a bespoke 300,000 litre rainwater harvesting solution using Ridgistorm-XL pipe. The rainwater harvesting tank has been designed as a balanced structure to reduce the size of the overall tank. A wide variety of bespoke fabrications for the non-standard elements of the project was also supplied.

A bespoke 100,000 litre Rainstream tank and leaf filter were supplied and installed to cope with rainwater from the school's 5,000 square metre roof area. The tank will store and filter rainwater before it is used for toilet flushing, providing a sustainable method of reusing rainwater. Working alongside contractor Skanska, several alterations were made to the standard Rainstream system to produce one of the largest tanks of its kind. Rainstream rainwater harvesting tanks reduce mains water consumption, providing increased cost savings on water bills. It is calculated that the Rainstream system installed at the college will save the Local Authority over £10,400 per annum.

Polypipe WMS re-engineered the original drainage specification from corrugated steel to its structured-wall Ridgidrain pipe, supplying over 7km for the project. Eight Rainsteam Rainwater Harvesting tanks were also installed in addition to 2200 Polystorm cells, to create an attenuation structure with a total capacity of over 400,000 litres. Bespoke control systems and leaf filters were supplied as part of the Rainstream system which was used to collect and recycle rainwater from two new prisoner blocks, an entrance building and the central building at the development for reuse in toilet flushing.