Skanska Costain Strabag completes latest HS2 base slab

Grant Prior 2 years ago
Share

The Skanska Costain STRABAG joint venture (SCS JV) has completed the base slab construction of the HS2 Victoria Road ancillary shaft in Acton.

The first permanent works began at the site in February 2021 when the team poured a 160m3 concrete collar around the ancillary shaft.

They then built the first 11m of the 25m internal diameter shaft using precast concrete segments, produced by FP McCann Ltd, before completing the final 19metre depth using the sprayed concrete lining technique.

The team of around 30 engineers and operatives have since completed the shaft with a 3.3m thick base slab constructed in three different pours.

The main pour of around 1,000 m3 of concrete took place at the end of 2021, and the second and third completed by the end of January 2022 adding another 740 m3 of concrete.

The site will provide critical infrastructure for the operation of HS2. As well as the 25m internal diameter shaft, which will provide ventilation and emergency access to the Northolt Tunnels, SCS JV is building a crossover box on the site that will let trains switch tracks on the way in and out of Old Oak Common station.

HS2’s Project Client, Malcolm Codling said: “The team at Victoria Road have made huge strides, completing the base slab of the ancillary shaft, and preparing the site for the launch of two tunnel boring machines.  As we move into the next phase of work. It won’t be long until we begin to see where the railway will run through the site, taking it from our detailed construction plans to reality.”

Skanska Costain STRABAG Joint Venture’s Managing Director, James Richardson added: “We’re constructing eight ventilation shafts along our 13 miles of twin bore tunnels in London and this vent shaft is the first to advance to this stage.

“Work is progressing well at all our other shaft sites so that they are ready for the tunnel boring machines to travel through them as our huge tunnelling programme progresses over the next three years.”

The site at Victoria Road also has a crucial role to play in construction.

SCS JV will use it to assemble and launch two tunnel boring machines (TBMs) that will dig the 3.4-mile eastern section of the Northolt tunnels. The TBMs are due to arrive in early 2023 and will begin the 12 month programme of tunnelling later that year.

The site will also be connected to the Logistics Hub located at the Willesden Euroterminal by a conveyor system that will remove spoil excavated for the tunnels.

The conveyor system, which also connects the Logistics Hub to Old Oak Common station site, will become operational later this year and will contribute to reducing lorry movements for HS2, removing around 1million lorries from the road.

Latest news

Berkeley subbies face six weeks without payments

Introduction of new finance software means payment hiatus for suppliers
18 hours ago

Pagabo reveals 56 winners of latest £1.6bn retrofit deal

Decarbonisation Solutions Framework launched: Full list of winners
18 hours ago

Go-ahead for £100m Liverpool Love Lane flats

500-flat scheme will be built across four blocks in Vauxhall area of city
18 hours ago

Unions win HS2 site access battle at Old Oak Common job

Skanska, Costain, Strabag JV now the last denying unions access to HS2 sites
17 hours ago

Contractors jack 1,100t viaduct into place in 13-hour operation

158m-long composite deck structure jacked into place 10-hours ahead of schedule
18 hours ago

Wates wins former Daily Mail printworks transformation

British Land advances major cultural venue at London’s Canada Water
2 days ago

Mace poaches Ramboll chief to be Head of Engineering

Martin Feakes will develop civil and structural engineering offer at Mace
2 days ago

Subcontractors form alliance for major civils jobs

Trio of specialists join forces to collaborate and offer Tier 1 contractors a turnkey solution
2 days ago

Fear of supply chain failures boosting collaboration

Procurement survey also reveals project bank account use is rising
2 days ago

Wates sets up business to target 160,000 mouldy social homes

Healthy Homes service will be offered to social landlords across England
2 days ago

Higgins wins £75m Peabody Passive House job

Latest phase of Deptford Landings to start construction
2 days ago

Contractors and unions agree Sizewell C working deal

New deal offers improved sick pay and parental leave over Hinkley Point deal
2 days ago

Competition chiefs win legal fight for more construction raids

High Court rules CMA officials can raid a domestic property as part of investigation
3 days ago

More Osborne companies file administration notices

Three more divisions lodge notices with court
3 days ago

McLaren wins multi-storey urban logistics contract

South London win with British Land is pioneering urban logistics hub
3 days ago

Big social housing schemes at risk over funding uncertainty

Housing associations warn uncertainty over public funding beyond 2026 is curbing new schemes
3 days ago

Kier wins Worcestershire town centre renewal

Firm secures Bromsgrove commercial and cultural hub project
3 days ago

BAM signs Kent school contract at £42m

Sevenoaks school rebuild signed off at £8m more than first estimates
3 days ago

RG Group signs £121m Newcastle rental homes job

Developer Olympian Homes advances 519 flats plan at Pottery Lane site
6 days ago

Geoffrey Osborne files administration notice

Contractor in talks to save parts of the business
6 days ago

Winners named for £260m Manchester Uni framework

B&K, Henry Bros, Graham, Robertson and Vinci among new line-up
6 days ago

Shed specialist Benniman rides out market lull

Worcestershire warehouse builder says industrial and logistics work is picking up again
6 days ago

Another contractor cleared after high profile immigration raid

Adana Construction employees were working legally on site swooped on by Home Office
6 days ago

McAleer & Rushe wants to meet new London suppliers

Contractor holding Meet the Buyer event in London: Register now
6 days ago

McAlpine signs £500m Broadgate dual towers deal

Work to start on iconic 36-storey and 21-storey towers
7 days ago

Worker rescued from collapsed four metre deep trench

Fire crews take six hours to save trapped builder near Blackwall Tunnel
7 days ago

Gove puts another major building scheme on hold

Secretary of State starts another planning fight after M&S defeat
1 week ago

Greenwich University tenders £300m framework

Up to five firms will carry out upgrade and newbuild work at three campuses
7 days ago

Work starts on Manchester 26-storey Obsidian tower

Contractor Domis starts Salboy's 10th Manchester scheme in seven years
7 days ago

Race for £1.3bn West Midlands social homes framework

The Community Housing Group reboots tender race for new build housing
7 days ago

Contractor services