1 & 2 New Ludgate

Major speculative new build office, restaurant and retail development in the City of London close to St Paul’s Cathedral.

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Project Details
  • Client

    Land Securities

  • Architect

    Fletcher Priest/Sauerbruch Hutton

1 & 2 New Ludgate involved the redevelopment of a 0.65 hectare site for two independent separately serviced high quality Category A fit out offices over 10 storeys of accommodation and 2 levels of basement, with retail/restaurants at ground floor level.

The development has delivered approximately 40,000m2 total area and Waterman were appointed to provide full multi-disciplinary engineering duties.

The site was constrained by St Paul’s depths Act restrictions, a Thameslink station tunnel immediately to the west of the site under Limeburner Lane, and had a UKPN tunnel passing under the site that had to be bridged over. A main substation also is located in the centre of the site.

The buildings sit on a common podium structure on piled foundations with slip formed cores. The superstructures for each building vary to suit the site geometry. 1 New Ludgate achieves column free large spans as a steel-composite frame, designed using fire-engineering techniques to omit intumescent coatings. 2 New Ludgate is curved and uses a post-tensioned concrete frame to maximise fit-out flexibility.  The PT slabs are designed with high strength aggregates to control deflection.

The project was designed in Revit, linked to 3D design and adopts a BIM collaboration strategy. This assisted the construction process where trade contractors were able to use 3D models prepared by Waterman as part of their fabrication process to reduce construction lead in periods.