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The Thames Tideway Tunnel project (the Project) will control CSO discharges by intercepting and diverting combined sewage flows into a new storage and transfer tunnel. The main tunnel will run from Acton Storm Tanks in west London to Abbey Mills Pumping Station in the east, where it will connect to the Lee Tunnel, which will transfer the combined sewage to Beckton Sewage Treatment Works for treatment. The Project extends from Acton Storm Tanks in west London, to Abbey Mills Pumping Station in east London. The Project includes associated works at Beckton STW, Shad Thames Pumping Station and Bekesbourne Street.
The geographic layout of the Project and local authorities through which it passes is shown in Figure 1.
The Project comprises:
a. tunnels:
i. a main tunnel which will capture and store combined sewage from CSOs along its route and transfer it to Abbey Mills Pumping Station, from where the Lee Tunnel will transfer it for treatment at Beckton Sewage Treatment Works ii. 11 connection tunnels, which will link flows from CSOs to the main tunnel.
b. Worksites:
i. five main tunnel Worksites (drive and/or reception sites) ii. 16 CSO Worksites iii. two System modification Worksites Thames Tideway Tunnel iv. works at Beckton Sewage Treatment works.
Scope of Works
Complete remaining secant piles
Local excavation and break back piles to expose the reinforcement
Design, Supply and Install of formwork to capping beam
Cast capping beam to levels indicated in drawing 3320-AAJV-CARRR-540-SZ-DR-000005 below to act as waling beams including couplers for internal walls and slab where required.
Design, Supply and Install temporary props in accordance with temporary works drawings provided
Excavation to +98.100mATD
Install the dowel bars into the male piles.
Design, Supply and Install Formwork for RC base slab - sumps and upstands
Cast RC base slab
Design, Supply and Install Formwork for RC liner walls
Cast RC liner walls
Design, Supply and Install Formwork for RC internal walls and beams
Cast all RC internal walls and beams
Design, Supply and Install Formwork for slab at ground level
Cast 3.8m width slab at ground level
Removal of temporary props
Design, Supply and Install of falsework to cast top slab
Fill pocket of RC internal wall
Pour top slab in stages as agreed with the Contractor
Striking of falsework
Design, Supply and Install of formwork to top slab upstands.
Returned quotations will be evaluated by BMB JV's (BAM Nuttall, Morgan Sindall PLC & Balfour Beatty) Procurement team in conjunction with our design and engineering teams.
Quotations will be evaluated based on;
Cost
Timeliness of return
Adherence to and demonstration of understanding of the drawings and specifications provided at this point.
Provision of accurate product specifications to accompany the quotation.
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Additional information: Carnwath Road Riverside Site - SW6 3HR
No supplier information available.