This website uses cookies. By continuing to browse the site you agree to our use of cookies. Find out more about the cookies we use and how to manage them.

Close

The Leadenhall Building. London. UK

Client
British Land and Oxford Properties
Sector
Buildings
Services
Building Construction Engineering ExpertiseModular ManufacturingSupport Services
Duration
2011-2014
Project partners
Rogers Stirk Harbour + Partners

Full project details

The 224 metre building will become one of the most recognisable in the square mile, occupying a prominent site directly opposite the distinctive Lloyd’s of London headquarters.

Design and engineering

The structure’s distinct asymmetrical shape – a response to planning requirements to maintain views of St Paul’s Cathedral – meant settlement both in the foundations and through compression of its elements would be irregular. The solution was to design the building to be erected slightly off the vertical so that it would settle in its correct form. This made the construction process exceptionally challenging. Working with tall building expert, Bill Baker of Skidmore, Owings & Merrill, Laing O’Rourke came up with an innovative alternative. Now, when the building reaches the 19th floor, steel along the sloping face will be tensioned to pull the structure back to the vertical. This process will be repeated every seven storeys.

An iconic building

The development’s tapering shape, which when viewed from the west will appear to ‘lean away’ from St Paul’s Cathedral, delivers varied sizes of floor plates, all offering spectacular views over London. Practical completion of the shell and core is scheduled for mid-2014. The geometry of the 52-storey skyscraper makes it theoretically unstable. Exceptional engineering skills were necessary therefore, to develop a construction methodology that enabled the building to stay upright – with tolerances of plus or minus 20mm required on all but five of its floors.

Using multidimensional Building Information Modelling (BIM) technology, Laing O’Rourke devised an innovative delivery strategy that harnesses the benefits of offsite manufacturing. This ‘virtual construction’ approach allowed the client to visualise our solution in intricate detail. Critically, by integrating data from the architects and structural engineers, the team was able to achieve the early design coordination needed to meet such a challenging programme. The model also combines information from key trades to ensure the compatibility of the different packages.

Logistics and DfMA

The intense public interest in the development leaves no room for logistical error. Its high-profile location – characterised by narrow and densely populated streets – along with the site’s remarkably tight footprint, represent considerable obstacles. To work around these constraints, much of the structure – including the cores, basement and building services – will be constructed off site. However, with components of up to 26 metres in length this creates its own challenges. Once again, the team used BIM to perfect its strategy for just-in-time assembly.

Now in delivery phase, the project is piloting the application of radio frequency identification (RFID) software – which uses data tags attached to building components to allow them to be tracked through manufacture, supply and installation. This will enable preventative action in the event of any delays downstream.

When integrated with BIM, RFID can be used to render a data-rich replica of the project in real time. Going forward, this technology will be used to enhance project controls and – against these – develop robust key performance indicators.

Project facts

A landmark in the making - towering 224 metres above the City of London

At least 83 per cent of construction works will take place off site, reducing the delivery schedule by approximately six months

Radio Frequency Identification (RFID) is used to render a data-rich replica of the project in real time, enhancing control and performance

The Leadenhall Building. London. UK

The Leadenhall Building. London. UK

The Leadenhall Building. London. UK

The Leadenhall Building. London. UK

The Leadenhall Building. London. UK

The Leadenhall Building. London. UK

122 Leadenhall Street

Featured projects

Cannon Place

London. UK

Discover

Merchant Square

London. UK

Discover

Tooley Street

London. UK

Discover
See all of our projects