• 22 March 2018

20 Farringdon Street

This prestigious development offers brand new, user-focused office space in a vibrant location in central London.

Situated in the heart of Midtown in London, 20 Farringdon Street is a striking new development which marks the second investment in the UK market for international real estate developer, HB Reavis.

The 11-storey commercial development comprises 85,000 ft2 of CAT A office space with six external terraces on the top floors offering desirable panoramic views of St Paul’s and the city.

Innovation runs throughout the scheme and this is notably displayed within the four-passenger lifts which use destination hall-call control. The development has been designed with well-being as a high priority. Facilities include a double-width staircase with enhanced finish to encourage people to use the stairs for increased activity levels. A separately designated cycle entrance off the cycle superhighway will accommodate 142 bicycles, showers and lockers.

Bringing new life to the site

We were appointed to provide full building services, structures and acoustic design services as well as energy, sustainability, environmental advice.

Working closely with architects, Denton Corker Marshall, the new building design maximises the development area on-site and the dynamic façade creates a ‘fully glazed wrap’ around three sides to visually link the main thoroughfare of Farringdon Street with Fleet Place, the city square behind the building.

The upper levels have been set-back from the main façade line to create six terraces, whilst the cladding incorporates floor to ceiling glazing for a bright and desirable working environment.

Our Structures team carried out a suite of intrusive investigations during the initial stages of demolition and were able to reuse the existing piled foundations in the new scheme. Following a finite element strain compatibility study, new supplementary piles were installed to provide a unified and enhanced foundation system to support the new structure, which included increasing floor levels from eight to eleven to maximise the number of floors to be delivered under the St. Paul’s height restrictions.

A fabricated steel composite frame minimised the total weight of the new building, creating a column-free office space. The concrete core was jumped formed with an architectural finish allowing it to be exposed. This has also reduced the core’s plan area to create more floor space.

Future-proofed and flexible design solutions

Our Energy Specialists carefully considered the façade performance requirements to reduce solar gain, utilising dot matrix fritting on high performance glazing whilst optimising useful daylight penetration. The low energy strategy was further enhanced with energy efficient air source heat pump chillers to provide cooling and act as the lead heat source in winter.

The Fan Coil Units run on low heating water temperatures to optimise the pump efficiency supplemented by low NOx condensing boilers. Photo Voltaic cells generate on-site electricity and low energy LED lighting utilises daylight dimming with presence detection control. The scheme’s design has reduced carbon emissions by 25% below current Part L2A standards and achieved a BREEAM 2014 ‘Excellent’ rating.

The open ceiling solution, with exposed M&E services gives a modern feel which provides increased volume, light and space. The design team has carefully considered all aspects of creating a future-proofed and flexible office which can easily adapt for a variety of tenants.

Julian Traxler, Structures Director, commented; “The team’s collaboration on 20 Farringdon Street has contributed to HB Reavis’ delivery of another striking and efficient commercial building in Central London. The ability for Waterman to provide a seamless multidiscipline service led to much of the coordination taking place internally, enabling the rest of the project team to focus on other key parts of the project.”

20 Farringdon Street reached practical completion in March 2018.


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