FK Lowry has been awarded a £3.6m contract across two separate construction sites for Tideway’s 25km tunnel to help tackle sewage overflows into the River Thames.
FK Lowry has been subcontracted to carry out works on the West section of the Thames Tideway Tunnel, which is being managed and constructed by an equal 3-way joint venture between BAM Nuttall, Morgan Sindall and Balfour Beatty.
Bearing Piles and Secant Walls using Rotary Bored and CFA techniques will be utilised on two of the work sites. Carnwath Road Riverside in Fulham and at the Hammersmith Pumping Station with a combined project value of approx. £3.6M. Typical Ground Conditions can be described as Made Ground/Fill overlying Soft Alluvium before River Terrace Gravels are encountered. The Sites are all underlain by London Clay from 7m to 11m below exiting ground levels.
Carnwath Road Riverside: valued at approximately £1.6M consists of 750mm diameter CFA Bearing Piles and 880mm Diameter Hard/Firm Secant Bored Piles to form interlocking walls for vertical Shafts for both Overflow and Interception Chambers. FK Lowry Piling has mobilised their Soilmec SR-75 and brand new SR-95 Dual Purpose CFA/Rotary Bored Piling Rigs on the site. Both Rigs come supplied with the latest Tier IV Engines that adhere to the London “Low Emission” Zone criteria.
Hammersmith Pumping Station: following on from Carnwath Road Riverside, FK Lowry Piling has also been awarded the £2M Piling Scheme to construct 160 linear metres of Hard/Firm Secant Bored Piles to form interlocking walls for Overflow and Interception Shafts and Culverts using a range of diameters from 600mm, 900mm and 1060mm Piles.
The £4.2 billion Thames Tideway Tunnel is due to be completed by early 2024, and will require the use of 24 construction sites, 11 of which are located along the river bank.