Water & Wastewater Treatment

Project focus: sewer networks from the Friars Walk development itself. Churngold knew the site's requirements could be met by water management firm Asset International, whose large diameter plastic Weholite pipes could be utilised to create a new sewer system, under the Friars Walk site. To deliver Churngold's require- ments Asset manufactured a twin 750mm sewer pipeline with an inte- gral dry weather flow channel, as well as numerous complex flow control chambers. The pipes were delivered to site in six metre lengths. The use of a twin pipeline means that there is always a redundant centre environment where space is tight and deliveries were restricted. Furthermore, once installed Weholite pipes are service ready immediately, unlike alternative materials such as concrete where days of dry time need to be factored into project timelines. Another additional benefit brought to the project is the fact that the Friars Walk site is just a few miles down the road from Asset's Newport factory. This meant that not only did the financial investment remain local, but carbon emissions in the transportation process were kept to a minimum as the pipes were shipped just a short distance between factory and site. Speaking about the project Dar- ren Williams, Asset International Technical Engineer commented: "We are highly experienced in working in challenging site environments, particularly exigent city centre loca- tions, where space and time are at an absolute premium. "In fact, our Weholite products are perfect for such environments, as not only are they pre-fabricated off site, but they can be delivered and installed in a matter of hours if required. The process is unbelievably quick in comparison to alternative methods." For more information about Friars Walk visit www.friarswalknewport.co.uk and www.queensberryrealestate.com. pipe, so if there is a problem with one of the pipelines, there is always a standby. The design engineer also opted to implement a combined sewer system, which mixes the storm and the foul water, all of which is piped to the sewage treatment works for cleans- ing. This is not particularly com- mon in new developments, but the advanced age of the existing Newport city sewerage system meant that it was required in this instance. Each pipe is also fitted with a dry weather flow channel, which con- centrates the flow into a narrower channel and keeps water and solids moving by increasing flow velocity, even during dry spells. This limits the risk of contamination and effectively self-cleanses. During periods of high rainfall, the full capacity of the pipe can be used to keep flow moving - something that was necessary on the Friars Walk site due to the area's high water table. A particularly relevant additional factor in the decision to procure Weholite pipes was the speed of installation that Asset International could deliver, thanks to their method of working which involves delivering factory built, pre-fabricated pipes to site in large segments, mean- ing that little on-site assembly and installation time was required. This is a must-have requirement in a city Work underway at the Friars Walk site in Newport. The retail complex will open in November 28 | November 2015 | WWT | www.wwtonline.co.uk ● Friars Walk is a 390,000 sq retail development which will regenerate Newport and create 1200 jobs ● Two major sewers crossed the site which needed to be replaced with one ● Strict timetable meant sewer relocation work coincided with steel erection work • Drivers

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