Thames Tideway Tunnel - C405 Main Works West - Hammersmith Shaft slipforming

Tender description

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. The Main Works West - Contract 405: all works from and including the Acton Storm Tanks shaft to and including the Carnwath Road Riverside shaft, as well as the Frogmore connection tunnel from Carnwath Road Riverside shaft to King George's Park shaft. This works package is for the provision of the design, supply and supervision of the slipform equipment for the secondary lining of the King Georges Park Shaft supply and delivery to site of Timber packers TTT West, The Subcontractor will be required to provide the following deliverables to fulfil the requirements of this Subcontract: • Provide the designs and calculations for the formwork (slipform) scheme for the King Georges Park shaft (to be checked by the Contractor) • RAMS documents • Supervisor for the duration of the work • Driver of the slipform equipment for the duration of the work • All equipment required • Product specification data sheet • Delivery of the above to site • Trial slide at the Contractor's yard at West Drayton The works are programmed for April 2019 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. Supplier experience