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The Fibrelite design and technical team recently helped overcome a number of potential problems for a construction company installing a storm water attenuation tank to alleviate serious flooding on a housing development in Gwersyllt, North Wales, UK.
Fibrelite says that on-site infrastructure changes included the building of a large underground tank to store rainwater during a deluge until slow-release back into the waste water network downstream was deemed safe.
David Holmes, Technical Director at Fibrelite, explained “The tank comprised a 3m x 13m chamber with a fixed structural beam running down the centre so covers were needed over a large area and had to be quickly removable by water board operatives for regular maintenance and emergency work.”
“In addition, given the siting of the tank in a residential area, the covers had to be both secure and safe to walk across with a negligible environmental impact, especially as the area is also home to the great crested newt, a protected species.”
According to Fibrelite, lightweight, bolt-down, medium-duty composite trench covers were quickly identified as a solution to the various difficulties. And the specialist anti-slip material incorporated into the manufacturing process as standard also proved beneficial, as it meant that this relatively large area of covers would be safe for residents to cross on a daily basis.
David Holmes added, “Covers were supplied in a modular arrangement to fit the challenging entrance specifications which allowed us to provide safe and easy access to the chamber via selected areas – a job that can be completed by just two workers using our specialist lifting handles; whereas a traditionally-made concrete or metal cover would have required dedicated lifting equipment.”
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