London - civil engineering awards

Women in Engineering, the Crossrail project

London Civil Engineering Awards 2015
The premier showcase for engineering excellence in the capital

The annual ICE London Civil Engineering Awards, in association with Topcon, celebrated outstanding engineering achievements in the capital. Civil engineering is about creating, improving and protecting the world in which we live.

Awards Ceremony

Our flagship event for the year, it was attended by more than 200+ industry leaders. ICE President David Balmforth and BBC London reporter Alice Bhandhukravi hosted the ceremony and announced the winners.

Winners

Seventeen projects where shortlisted by our judges with 7 being awarded trophies. Below are this year's ICE London Civil Engineering Awards 2015.

  • Believe in Better building

    Believe in Better building

      Winner: Building Award

      • Principal Architecture and Engineers: Arup Associates
      • Client: Sky

      The Believe in Better Building is the first UK multi-story Massivhotz commercial building and was designed and constructed in less than one year. It is a super-flexible facility which is of exemplar sustainable design. It is the first UK building design in accordance with the emerging Wellness Institute principles.

    The Believe in Better building is the largest Massivholz commercial office building in the UK and was designed and constructed in less than one year. It demonstrates what can be achieved through collaborative approach typified by Arup Associates' Unified Design philosophy, with co-located architects and engineers working seamlessly in collaboration with client, contractor and suppliers to get the project from commission to site in only 3 months.

    To achieve this programme, Arup Associates proposed engineered timber system to eliminate wet trades (the CLT can be installed at 500-800m2 week, compared with 300-400m2 week for RC). We also engaged with potential suppliers at concept stage to take on board their advice on how to optimise the construction speed of the frame and envelope. The insulated timber cassettes provide u-values and air-tightness better than Passivhaus requirements and were erected in 8 weeks. So when Mace came on board as main contractor, the suppliers were already familiar with the job.

    The revolutionary timber frame
    The revolutionary timber frame
    The inside of the finished building
    The interitor of the finish building
    Entrance hall of the new building
    Entrance hall of the new building

    Cross-Laminated Timber (CLT) floors usually involve significant acoustic and fire treatment, but we were able to justify the 450 deep raised floor for air supply and services, as providing adequate acoustic separation. This eliminated as a four storey building, the 60 minute fire rating was achievable with charring so the timber can be left exposed, so people can see the natural timber frame. Through our fire engineering approach, we were also able to design out the need for sprinklers, saving the time and money of installing the system.

    The mixed mode servicing strategy includes provision for connection to the sitewide Combined Cooling and Heating System (CCHP), Photovoltaic (PV) arrays on the roof and Flowstow gravity-fed rainwater harvesting to avoid the need for underground tanks and extensive pumps.

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  • Bond Street Station Upgrade

    New Bond Street Station building

      Winner: Infrastructure Award

      • Principal Contractor Design & Build: Costain Laing O'Rouke Joint Ventures/London Underground
      • Client: London Underground

      The Bond Street Station Upgrade project will provide 30% extra capacity at this key West End transport interchange. The construction of a permanent 6-storey structure, for use in a temporary condition to completely service the tunnelling works will then provide the new Over Site Development.

    The Bond Street Station Upgrade will provide a new entrance to this key transport interchange in the heart of London's West End, together with much enhanced capacity and step free access to all platforms.

    Situated on Oxford Street, one of Europe's busiest shopping areas, the building frame was erected and clad in its temporary configuration, supporting two 17.5 tonne gantry cranes, to allow 24/7 excavation and construction of deep shafts and tunnels which will form the new passageways providing improved access to the Central and Jubilee line platforms.

    The use of a composite steel/precast frame was a key feature in the design to achieve the greater construction loads imposed In the temporary state during tunnelling.

    Lowering materials to the station below
    Lowering materials to the station below
    The frame of the 6 storey service building
    The frame of the 6 storey service building
    The façade helping keep noise down
    The façade helping keep noise down

    Triple height, wholly precast reinforced concrete columns (each weighing 11.5 tonnes),with embedment plates blended together with steel beams encased in concrete allowed the frame to be designed without the first and second floors to meet the 12m height requirement needed to allow passage of materials in and excavation material out.

    The upper floors of the Over Site Development (OSD) provides welfare for the 160 operatives and staff, as well as a safe environment for the workforce, with ventilation and escape routes designed into the scheme.

    The extremely restricted city centre site adds to the complexity of the project. Construction of the OSD precast framework took place concurrently with the shaft excavation and tunnelling works being undertaken below the building; 4-D modelling was used to plan construction activities and logistics on a daily basis. Just-in-time deliveries of precast elements were coordinated with the suppliers well in advance of manufacture to ensure the most efficient build sequence, and reduce the number of deliveries to site, thus minimising disruption to the public.

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  • Hammersmith Flyover Strengthening and refurbishment works

    Hammersmith Flyover in West London

      Winner: Special award: Re-engineering London

      • Principal Contractor: Costain
      • Client: Transport for London

      The Hammersmith Flyover carries 70,000 vehicles each day. Post-Tensioned Special Inspections revealed severe corrosion of the pre-stressing strands which, if left, would affect the structure's load carrying capacity. The technical complexity, interdependency and strategic location presented numerous constraints in both design and construction.

    The Hammersmith Flyover, opened in 1961, is a strategic route into Central London. It is a pre-cast post-tensioned structure, supporting a dual two lane carriageway carrying 70,000 vehicles each day. Post-Tensioned Special Inspections revealed severe corrosion of the pre-stressing strands which, if left, would affect the structure's load carrying capacity. This, together with other upgrade and refurbishment works presented a unique challenge and opportunity with a fully integrated team working to strengthen and extend the flyover's life.

    Starting with Early Contractor Involvement to construction, new technologies and innovations were developed for design and installation of a pioneering Post Tensioning (PT) system. Use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC), with strengths of up to 180 MPa, for insitu and precast tendon anchors (blisters) reduced their size and weight. Application of cable stay technology for post-tensioning tendons enhanced durability. This is the first application of this type in the UK.

    The new strengthening ties on the flyover
    The new strengthening ties on the flyover
    Adding strength with new steel beams
    Adding strength with new steel beams
    the finished product
    the finished product

    The construction team designed, manufactured and tested tools capable of lifting blisters, each eighing up to 3t, positioning them safely into pre-drilled holes within tight tolerances. This has been achieved without any incidents, minimising traffic disruptions and maintaining pedestrian access at all times.

    The team designed manufactured and tested a bespoke concrete injection tool (syringe) to place the UHPFRC. The standard concrete pump would have caused uneven fibre distribution and have resulted in excessive waste. This innovative solution enabled the project to safely carry out concreting perations on a restricted and congested site. Both bespoke pieces of equipment were tested on our full scale off site mock-up to ensure the works could be delivered safely, efficiently and effectively before being used on the structure itself.

    The project extends the overall life of the structure and reduces future maintenance liabilities. A slender PT design maintains the aesthetic qualities of this iconic structure, as well as reducing the risk of vehicle impact.

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  • Herne Hill Flood Alleviation Scheme

    Herne Hill flood defences and play ground

      Winner: Special award: Community contribution

      • Principal Contractor: MGJV
      • Client: Thames Water & Southwark Council

      This project utilised parks in an innovative approach to protect over 100 homes and businesses from risk of flooding in Dulwich and Herne Hill caused by runoff rainfall. Sensitive design helped avoid the appearance of engineering structures in the parks while creating play areas for local children.

    The Herne Hill Flood Alleviation Scheme is an innovative approach to flood risk management, protecting over 100 homes and businesses from flooding in Dulwich and Herne Hill. The scheme has been delivered by Thames Water in partnership with Southwark Council and the Environment Agency and is one of the first multi-agency Sustainable Urban Drainage Systems (SuDS) schemes delivered in London.

    Surface water is managed utilising the natural fall of the land, with no requirement for additional resource other than from future maintenance. It is this simplicity that ensures the scheme is sustainable, enhanced by balancing the 12,000m³ of excavation with the fill required to build the flood defences to avoid the use of other natural materials. Sensitive detailing has also led to the creation of 3750m² wetland and 6400m² of wildflower meadows to attract wildlife, enhancing local habitats and biodiversity.

    A model of Herne Hill flood defences and new child play area
    A model of Herne Hill flood defences and new child play area
    Work begins on the ground water tank
    Work begins on the ground water tank
    Finished off with a flood wall
    Finished off with a flood wall

    The use of SuDS has presented significant opportunities to enhance the environment within the parks. The design acknowledges how these spaces are used and how the flood defences may be impacted. The flood defences are designed to reflect the character of grade two listed parks and allows them to be enjoyed as an open space area. The integration of the flood defences with the children's play area in Dulwich Park also creates an environment for children to enjoy and explore.

    A schools programme was created to explain the scheme with over 450 children across six local primary schools taking part. The effect of flooding and its impact on the local area was demonstrated via the use of a scale model of Dulwich to replicate the topography of the area. Pupils were asked to recreate rainfall so that they could see the effect surface water has on flooding. Several classes visited Dulwich Park to see the construction work in action.

    The scheme has been a successful investment in flood risk management by private and public sector organisations. At its inception, managing the requirements of each of the partners while consulting with local stakeholders to identify their needs presented worthwhile challenges. This relationship provides opportunities for future partnership projects which can benefit from the lessons learned in delivering this scheme.

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  • London Overground Capacity Improvement Programme

    London overground extends trains to 5 cars

      Winner: Greatest contribution to London Award

      • Principal Contractor: CH2M Hill
      • Client: Transport for London

      London Overground has grown fourfold in the last seven years. This demand lead to a Mayoral commitment to urgently increase capacity by lengthening trains from 4 to 5 carriages. This transformative 25% increase in capacity was delivered to passengers within just 20 months.

    The London Overground Capacity Improvement Programme (LOCIP) successfully delivered 5-car trains on the East London Line in November 2014. This transformative 25% increase in capacity was delivered to passengers within just 20 months of TfL Board approval through outstanding engineering and project management. In order to meet the very challenging target date set by the Mayor, discrete packages of works were accelerated to allow site preparation and site formation to commence whilst the main works designs were being developed.

    A complex multi-discipline integrated design was developed with input from 7 design houses, resulting in over 900 designs being produced and accepted for construction by our 3 main delivery partners In order to succeed in delivering a complex sequence of construction works across various sites the main works contractors Cleshar, C Spencer and Sl MS and their subcontractors executed delivery collaboratively, with a culture of integration and interface throughout design and construction. The output of this delivered seamless testing and commissioning of the new infrastructure.

    London Overground have added an extra coach to their trains
    London Overground have added an extra coach to their trains
    New siding on old contaminated ground
    New siding on old contaminated ground
    A new state-of-the-art depot for the trains
    A new state-of-the-art depot for the trains"

    The 40m extension of the maintenance shed had to bridge one of London's major utility corridors. The design is such that the mezzanine style structure supports the building and trains whilst retaining access for utility suppliers to their assets underneath. A key construction challenge was piling around and between these services, one pile was bored within 1m of a UK Power Networks cable servicing 250,000 London homes at a time when there was no network redundancy.

    The project had the enormous challenge of squeezing an extra 23m of train into platforms and surrounding infrastructure, including the signalling system previously optimised for 4 car trains - whilst keeping daily passenger journeys as normal as possible. A few platforms that couldn't be physically extended adopted state of the art Selective Door Opening (SDO) technology to prevent specific doors from opening. A secondary benefit of the SDO system is Correct Side Door Enabling (this is further discussed in the H&S section).

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  • Moorgate Exchange

    Moorgate Exchange at night

      Winner: ICE London and Evening Standard People's Choice Award

      • Contractor: Skanska & Ramboll
      • Client: Brookfield Multiplex

      Moorgate Exchange a striking £65 million commercial redevelopment 12 storeys providing 225,000sq ft of grade A office space. The project provides a dynamic and high quality commercial building that makes a modern architectural statement. It received the highest BREEAM and LEED sustainability ratings due to its passive design measures.

    A striking £65 million commercial redevelopment in central London, the brief for Moorgate Exchange focused on two core aims:

    • Provide a dynamic and high quality commercial building that made a modern architectural statement, while maximising lettable area.
    • Produce a structure that achieved the highest BREEAM and LEED sustainability ratings.

    The presence of a subterranean chamber infringing on the south-west corner of the building precluded the use of a founding column in this location. The most effective way of overcoming this problem, without causing undue stresses in other areas of the structure, was to introduce a raking column solution, and subsequently an adjacent triangular formation to effectively resist overturning forces.

    The exterior of the building
    The exterior of the building
    The internal frame of the building
    The internal frame of the building
    Roof garden with views over the London skyline
    Roof garden with views over the London skyline

    The presence of subterranean chambers and proposed Crossrail tunnels under the site, as well as the very close proximity of the London Underground tunnels to the nearby Moorgate station, led to a very tightly constrained site. It was decided the most efficient foundation solution for the building would be to introduce a reinforced concrete raft.

    The 1.2m deep foundation raft used Xypex waterproof concrete, which is crystalline technology that enabled a grade 3 basement. The use of recycled stent aggregate and GGBS attributed to the high sustainability credentials. The heavily reinforced slab required the use of shear rails to assist the punching shear of basement columns another innovative idea to constructing the foundation instead of the traditional shear links which proved difficult to install.

    The raft future proofed the building for the new Crossrail tunnels proposed under the site. The effective use of this solution demonstrates how a different solution to the oft-used piling can be achieved in constrained London sites.

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'Designed in London' category

  • Panama Circito Bridge

    Panama community bridge project

      Winner: Designed in London

      • Company: Ove Arup and Partners
      • Client: Bridges to Prosperity

      Charity Bridges and Arup have collaborated with the aim to elevate poverty caused by rural isolation. A bridge was needed in the Panamaian jungle to help improve safety and connectivity. This project fulfilled this need by providing safe access to schools, healthcare centres and markets to more than 1000 people.

    "A world where poverty caused by rural isolation no longer exists" is the vision of the charity Bridges to Prosperity (B2P). Arup collaborates with them and is helping to achieve this; one bridge at a time.

    For design efficiency in these projects, Arup developed "BridgeTOOL", a digital design tool and learning resource that enables the rapid design of suspension footbridges and produces the documentation for construction. B2P now use this tool on every suspension footbridge.

    A bridge was needed in the Panamanian jungle to connect three villages separated by the river Ciricito, which floods four months of the year due to heavy rainfall and is impossible to cross safely. Therefore, a team of nine Arup volunteers used BridgeTOOL to design the Ciricito suspension footbridge spanning a distance of 46 metres, and travelled to Panama to construct it, together with the local community and three B2P employees.

    Locals helping build their new bridge
    Locals helping build their new bridge
    Working together with industry experts
    Working together with industry experts
    Allowing safe access to transport and health care
    Allowing safe access to transport and health care

    The construction of the bridge was a feat of co-ordination and control over tough site constraints, a short 12-day program, and the complexity of working in a developing country with limited access to tools and materials.

    The success of this project can be attributed to excellent project management and planning, but also the ability shown by the Arup team and the local community to adapt both themselves and the methods employed to unexpected changes and to the local environment.

    The local community was involved in the construction of the bridge and great emphasis was placed on sharing all construction tasks between the different parties in order to maximise the exchange of knowledge. This resulted in trained locals with the required skills to look after the bridge in the future and carry out any necessary repairs.

    The completed bridge now provides safe access to schools, medical centres and markets for more than 1,000 people, clearly demonstrating the positive impact this project has had on the local community. However, this project has gone far beyond building this bridge. It involved full engagement and knowledge sharing with the local community.

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