Source: https://tendernation.io/opportunities/01a13c93-ab6c-715c-8951-fa70d8d427d6/hs2-main-works-s1-s2-wp171-scl-formwork awarded GB open procedure Suitable for SMEs # HS2 Main Works S1 & S2 - WP171 SCL Formwork [Skanska Costain STRABAG Joint Venture (SCS JV)](https://tendernation.io/buyers/skanska-costain-strabag-joint-venture-scs-jv) Estimated value £2,500,000 to £5,000,000 Published 13 Oct 2021 Deadline Closed 19 Oct 2021 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender The scope for this package is the supply of SCL Formworks. SCS require lining shutters to construct cast insitu concrete tunnel secondary linings. The works will include: \*Technical design \*Design to British or European Standards. \*Provision of calculations and drawings, including design of all temporary loads such as concrete pressure and uplift/floatation without penetrations through the shutter or waterproof membrane. \*Provision of erection sequence /shop drawings \*Manufacture and delivery of formwork to SCS jobsites, at multiple locations along the HS2 S1 and S2 contract. \*Initial assembly of the system in the tunnel. \*Buy-back of the system. The works are split in to 3no. separate packages: - Cross Passages - Access limited to cross passage by openings in the TBM running tunnel of 2.850 x 1.900m - Secondary lining invert will have previously been cast flat. - Secondary lining thickness of ~250mm. - Shutter internal dimensions ~2.7m high x 3.3m wide. - Cast in a single pour. - Cross passages varying in length from 5-5.8m. The shutter should be adaptable to suit this length, and the combined TBM horizontal driving tolerances from both bores - Due to access limitations for mechanical lifting, the shutter should take into consideration UK manual handling legislation. - Required for July 2022 - Old Oak Common SCL Tunnels - Secondary lining shutters to facilitate the construction of both the Upline and Down running tunnels concurrently (2no complete sets of panels and carriages required) - Shutter internal dimensions ~10m diameter. - Formwork to be adaptable for a range of profiles, with common arc sections and make up pieces. - Cast in a single pour. - Shutter suitable for pours ~10m in length. Adaptable for make-up pours - Formwork to be carriage mounted and hydraulically operated. - Secondary lining invert will have previously been cast flat. - Secondary lining thickness of ~350mm - Facing material suitable for up 20no. of pours, with no access to clean or oil, whilst still providing F2 finish. - Required for April 2023 - Euston SCL Tunnels - Secondary lining shutters to facilitate the construction of - both the Upline and Down Crossover tunnels concurrently (2no complete sets of panels and carriages required) ,internal dimensions ~10m diameter. ii. Cavern crossover of varying sizes (15m, 13m and 11m), formwork to be adaptable for a range of profiles with common arc sections and make up pieces where possible. - Cast in a single pour. - Shutter suitable for pours ~10m in length. Adaptable for make-up pours - Formwork to be carriage mounted and hydraulically operated. - Secondary lining invert will have previously been cast flat. - Secondary lining thickness of ~350mm - Facing material suitable for up 35no. of pours, with no access to clean or oil, whilst still providing F2 finish. - Required for Jan 2024 Read full description ## CPV classification Tunnelling works Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/60cb3f2a-1fff-4a4a-b6ab-087e2e3cf143) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. 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