Awarded
HS2 Main Works S1 & S2 - WP171 SCL Formwork
Descriptions
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: 1)Cross Passages a.Access limited to cross passage by openings in the TBM running tunnel of 2.850 x 1.900m b.Secondary lining invert will have previously been cast flat. c.Secondary lining thickness of ~250mm. d.Shutter internal dimensions ~2.7m high x 3.3m wide. e.Cast in a single pour. f.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 g.Due to access limitations for mechanical lifting, the shutter should take into consideration UK manual handling legislation. h.Required for July 2022 2)Old Oak Common SCL Tunnels a.Secondary lining shutters to facilitate the construction of both the Upline and Down running tunnels concurrently (2no complete sets of panels and carriages required) b.Shutter internal dimensions ~10m diameter. c.Formwork to be adaptable for a range of profiles, with common arc sections and make up pieces. d.Cast in a single pour. e.Shutter suitable for pours ~10m in length. Adaptable for make-up pours f.Formwork to be carriage mounted and hydraulically operated. g.Secondary lining invert will have previously been cast flat. h.Secondary lining thickness of ~350mm i.Facing material suitable for up 20no. of pours, with no access to clean or oil, whilst still providing F2 finish. j.Required for April 2023 3)Euston SCL Tunnels a.Secondary lining shutters to facilitate the construction of i.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. b.Cast in a single pour. c.Shutter suitable for pours ~10m in length. Adaptable for make-up pours d.Formwork to be carriage mounted and hydraulically operated. e.Secondary lining invert will have previously been cast flat. f.Secondary lining thickness of ~350mm g.Facing material suitable for up 35no. of pours, with no access to clean or oil, whilst still providing F2 finish. h.Required for Jan 2024
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Tender Regions
CPV Codes
14622000 - Steel
45223500 - Reinforced-concrete structures
45262310 - Reinforced-concrete work
43123000 - Tunnelling machinery
45221247 - Tunnelling works
44114000 - Concrete
44114200 - Concrete products
45262300 - Concrete work
45223210 - Structural steelworks
Keywords
steel
ferrous metal
carbon steel
alloy steel
tunnel boring machines
TBMs
trenchers
underground excavation machines
mining tunnellers
concrete
ready‑mix concrete
structural concrete
building concrete
poured concrete
concrete products
precast concrete units
concrete slabs
manhole sections
concrete blocks
tunnelling works
tunnel boring
underground drive construction
TBM tunnelling
tunnel excavation works
rock-boring for tunnels
subterrain tunnel work
tunnel shafting
civil tunnelling project
tunnel lining work
steelwork construction
steel framing build
structural steel element erection
beam and column assembly
reinforced steel structures
load-bearing steel components
girder erection
heavy steel framework
industrial steel skeleton
civil steel infrastructure
reinforced concrete structure build
RC structure erection
concrete frame construction
reinforced concrete shell build
concrete superstructure work
RC skeleton erection
structural concrete build
concrete core construction
load-bearing concrete structure
RC building framework
concrete work
cast-in-place concrete
mass concrete placement
concrete slab pouring
in-situ concrete construction
structural concrete works
concrete foundation building
reinforced concrete pour
concrete framing
civil concrete works
reinforced-concrete work
RCC building
rebar concrete structure
structural RC framing
reinforced slab construction
concrete beam and column work
steel-concrete composite construction
high-strength reinforced concrete work
seismic RC structure build
Tender Lot Details
2 Tender Lots
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Possible Competitors
1 Possible Competitors
