Thames Tideway Tunnel - C405 Main Works West - Hammersmith Security Gates & Fencing

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. Section 4: Scope of Works BMB JV require an experienced Subcontractor to install high security gates and fence at Hammersmith Pumping Station Site (HAMPS). The security gates and fence will demarcate and protect the boundary between Fulham Reach Development and Thames Water. This will include the replacement of a vehicle gate and installation of a new pedestrian gate on Chancellor's Road boundary. Attached are gate 4 drawings for the works, the successful Subcontractor will be required to produce fabrication drawings to gate 5 for approval by the Contractor. The new fence is specified as high security proprietary Zaun Armaweave - refer to drg: '3320-AAJVX-TTWES-420-CR-DR-000106' for full specifications. The perimeter is highlighted in drg '3320-AAJVX-HAMPS-590-LZ-DR-000200 - Marked Up'. The area will be cleared and filled to substrate level by BMB JV. The Subcontractor will be required to construct the foundations and install the gate as per 3320-AAJVX-HAMPS-590-LZ-DR-000200 and 3320-AAJVX-HAMPS-590-LZ-DR-000300. 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 of similar projects,evidence of this will be requested should the initial quotation be of interest.