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Swell or heave of lime stabilised high sulfate material has been the cause of numerous high profile construction failures in the last 50 years. The formation of ettringite and thaumasite…

The scale of HS2’s environmental assessment is unprecedented. Fundamental to this is understanding the scheme impacts on Traffic and Transport, from local footpath changes to major road and rail improvements.…

For any noise prediction model, it is vital that there is confidence that the forecast noise levels, within the calculated confidence limits, are going to be met in reality. This…

This paper explores the challenges of fragmentation of green infrastructure (GI) and sustainable design solutions to preserve, defragment and strengthen GI. These approaches are explained through a series of HS2…

This paper is based on work to deliver Euston station as part of the High Speed Two (HS2) Phase one works, being delivered by the Euston Integrated Project Team (IPT)…

HS2 uses noise prediction models for assessing the impact of high-speed trains in the surrounding environment and to inform mitigation requirements ([1] and [2]). The HS2 noise prediction model is…

Grendon and Doddershall Meadows Local Wildlife Site (LWS) is located just over 1km west of Quainton in Aylesbury, Buckinghamshire. The LWS citation states that the 24.5 hectare (ha) area was…

Environmental DNA (eDNA) monitoring became an accepted means of surveying for great crested newt (Triturus cristatus) in 2014, following the publication of a DEFRA-funded trial, and it is now used…

To mitigate for the loss of badger setts, closed due to construction of the scheme, over 30 artificial badger setts have been constructed across Phase One under a licence from…

The production of the hybrid Bill for the High Speed Rail (Crewe – Manchester) was a complex, multi-stakeholder and multi-disciplined co-ordination under a challenging programme with risks of a minor…

Learning Legacy has been used on major projects for more than 10 years to capture and share learning from major projects. It was first developed to share the learning from…

This paper presents the design methodology adopted to evaluate the response of a pre-cast reinforced concrete cut-and-cover tunnel subjected to an accidental fire load. The design methodology adopted a simplified…

The challenge for the Phase 2b Environmental Statement was to take 1000s of records of heritage assets across the nearly 300km long scheme and try to standardise them so the…

The Phase 2b Environmental Statement (ES) was one of the largest produced in the UK in recent years. The ES required inputs from a diverse range of organisations across the…

This report describes the implementation of a data-driven approach to report creation for more efficient, standardised outputs. Vast amounts of information are required to plan, manage, and deliver the High…

HS2 Ltd and its delivery partners in the supply chain established the Back to Better Programme to implement consistent and effective control measures for work sites in line with its…

Safety is at the heart of everything the High Speed Two (HS2) programme does. This paper describes the behaviour safety programme that was developed by Balfour Beatty VINCI (BBV) -…

The efficient distribution of construction materials, fully compliant with HS2’s ambition to be carbon neutral and considerate to its neighbours, presented a unique range of materials challenges and it became…

The Align JV worker travel shuttle service was established in early 2020, with the aim of providing a safe and efficient mode of transport for staff working on the Align…

The Route Map was developed to provide an oversight of the entire works of the Main Works Civils Contract (MWCC) Area North with detailed summaries of each sublot, enabling stakeholders…

Design House JV is approaching the end of a challenging Phase 1 delivery period. A team of organisational psychologists created an employee recognition system called Kudos, to boost morale and…

The construction industry has a reputation for lacking inclusivity facing challenges such as the underrepresentation of women, BAME individuals, and LGBTQ+ employees. This paper discusses the approach taken by Balfour…

This paper presents an innovative digital workflow designed to address the challenges associated with collecting, reporting, and visualising construction stage geological and geotechnical ground data (geo-data). It emphasises the importance…

This paper is presented as part of the works to deliver the Main Works Civils Contract (MWCC) for the central section of High Speed Two (HS2) Phase One which includes…

Hand Arm Vibration Syndrome (HAVS) is a health condition caused by the vibration from any hand-held, fed or guided power tools and machinery on site, e.g. drills, torque wrenches, plate…

This paper focusses on the Main Works Civils Contract (MWCC) for the central section of High Speed Two (HS2) Phase One which includes the Colne Valley Viaduct and Chiltern Tunnels,…

DAARWIN[1] is a web platform that refines geotechnical design models using data collected from site. It compares the design prediction against the measured response to enable a more accurate understanding…

This paper focusses on the sustainable re-use of excavated earthworks materials and the lessons learned as part of the EKFB journey. The objective for EKFB, as the main works contractor…

HS2 Ltd has strategic goals for setting new standards for customer experience and health and safety in the operation of the railway and therefore requires its designers to take an…

In line with the UK government net-zero carbon by 2050 commitments, this project was aimed at cutting carbon and improving local air quality, High Speed Two (HS2) has trialled a…