Throughout the latter part of 2016, Thames Water experienced a number of high profile incidents on several key Trunk Mains across London. Bursts occurred on mains in the Leigham Vale, Upper Street, Camberwell New Road, Stoke Newington, Lee High Road and Crayford Areas. Once the initial emergency works had been undertaken to restore service, Thames Water developed a planned programme of rehabilitation work, designed to prevent such incidents from happening again in the future.
As part of this project, Thames Water’s eight2O alliance engaged Barhale to rehabilitate the existing 18 inch diameter Palace Road trunk main. This main presented significantly raised risks as it had experienced 5 bursts/leaks in the months prior to the works, and it was anticipated that another major burst would result in the repeat flooding of a number of properties. Overall, the team successfully replaced over 1.2km of main along Palace Road.
Woodman Drive is a small cul-de-sac situated in Rotherham, South Yorkshire. A history of localised internal and external flooding from the sewer during storm events led Yorkshire Water to promote an investigation scheme to try and resolve the flooding. The subsequent investigation carried out by Barhale and GHD found that during storm conditions the main sewer backed up and became overloaded, resulting in the flows backing up the connections to properties flooding them with sewage and escaping out of the gullies flooding driveways. The proposed solution was to lay 47m of new 225mm diameter sewer parallel to the existing sewer in the adjacent A633 Warren Vale Road and abandon the connecting sewer from Woodman Drive to alleviate the flooding. The project was then promoted to delivery stage to install the above solution
In order to facilitate the development of a new retail distribution
hub in Knottingley, West Yorkshire, Barhale’s Yorkshire region have
successfully delivered a brand new foul sewer pumping station and
associated rising main.
As part of their £100m ‘Cross Point’ development, Caddick
Developments were commissioned to construct a huge new
distribution hub for their client TK Maxx. The new distribution centre
will be operational on a 24/7 basis and eventually employ around
2,000 people. Yorkshire Water therefore engaged Barhale to provide
the centre with a foul water connection to the existing network.
Over the course of 2013 and 2015 the residents in the town of New Cumnock, East Ayrshire had been badly affected by flooding.
East Ayrshire Council appointed Barhale to complete Phase 1 of the flood protection scheme; installing preventative measures in the rural Leggate area to the West of the town.
This area had flooded due to the Connel Burn (a stream that runs in amongst the homes) over-spilling its banks.
In order to solve a potential ammonia issue at Stanbridgeford Sewage Treatment Works (STW), Barhale’s team with Anglian Water’s IOS programme have installed a new biological tertiary treatment plant to remove additional ammonia.
The new plant consisted of:
• 12 no. SAF units which were constructed off site
• 2 no. 7.5kw feed pumps and 2 no. 11 kw blowers
• A new MCC kiosk and PLC which were constructed off site
• Utilising the existing feed well and drying bed slab
In their component parts, the elements are fairly standard pieces of equipment which can be found on sewerage works around the country. The way in which the Barhale team have brought the pieces of the plant together however, and some of the specific nuances of the design, has made the solution particularly innovative.
Barhale, on behalf of Thames Water/Optimise, re- laid trunk sewers
at Wembley as a result of a number of new developments within the
catchment surrounding Wembley Stadium. The works were to resolve
flooding, which had been occurring and prevent future flood events
as a result of 1 in 30 year storms. The scheme, which commenced in
May and was completed in December 2015.
Wembley Stadium and its surrounding environment is a very busy
pedestrian traffic route. This level of pedestrian traffic proved to be a big
challenge facing the project especially as there were numerous events
that took place at the Stadium and the neighbouring Wembley Arena.
To protect members of the public and minimise disruption to them,
strategic planning of the work area was required.
As part of upgrades to the waste water treatment system at Woburn Forest Center Parcs, Barhale were contracted by ACWA to construct a new 1200m3 balance tank and undertake associated civils. The increased tank capacity will provide operational and emergency resilience for expanded village facilities, which includes 57 luxury accommodation lodges at the popular holiday site.
Despite challenging conditions, which included cold winter weather, working in an area adjacent to guest accommodation, and modifications to the initial scope that increased the volume of work, the Barhale team finished the work within cost and programme, and in accordance with all technical standards.
Barhale were awarded the scheme by Thames Water to alleviate flooding within the Bayswater area of London.
The scheme involved the connection of the existing Victorian sewers to a new pumping station from which discharge would be carried via a new rising main to another existing brick built egg shaped sewer.
The pumping station was designed for storage of a 1 in 15 year storm. Discharge passed through a reinforced concrete valve chamber some 6m long, 3m wide and 3m deep, to a 600mm concrete outlet pipe laid in open cut trenches to the existing Victorian brick built sewer at Inverness Terrace, a narrow road with a number of Embassies to one side.
As part of Anglian Water’s Integrated Operational Solutions (IOS) programme, Barhale have delivered a new Booster Pumping Station in Silverstone, Northamptonshire. This is to help meet the increased demand in water supply that occurs intermittently throughout the year when events are held at the nearby race circuit.
This is especially important during the British Grand Prix weekend in July. Each year the drastic increase in water demand puts a tremendous strain on the existing water network. This is caused by nearly 400,000 members of the public who visit the circuit over the three days and the many thousands more who camp in the surrounding areas in the week leading up to the event.
To facilitate a new 225,000 square foot extension to the INTU Lakeside shopping centre in Essex, Barhale were required to divert existing utility services away from the new building footprint by carrying out extensive open cut excavation.
The new extension will act as a focal point for the shopping centre, housing numerous leisure facilities including; a bowling alley, various food and drink outlets and an interactive family entertainment centre.
There were three existing services, which clashed with the footprint of
the new building:
• Potable water main
• Gas main
• HV electricity ducting