Chamberlayne Flood Alleviation

In order to reduce the risk of internal and external sewer flooding to 36 local properties, Barhale were contracted by Thames Water during AMP 5 to install flood alleviation measures in the Chamberlayne Road area of Brent, North West London.

To increase the network capacity, the scheme was originally proposed as a series of open cut sewer upsizing works, however due to time constraints on the programme and the disruption open cut trenches would cause to the area, Thames Water asked their partners to propose an alternative solution. Barhale suggested a micro tunnelling solution in order to provide the following benefits:

• Minimise the disruption to the local roads and residents
• Use the large diameter jacking pipes to maximise the online storage capacity (additional 800m3)
• Minimise the risk of digging around buried services in the highway
• Shorten programme duration