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SSDA Awards

Merit: Thirty Broadwick, London

FACT FILE
Architect: Emrys Architects
Structural engineer: Heyne Tillett Steel
Steelwork contractor: Severfield
Main contractor: BAM Construction
Client: Great Portland Estates plc
The structural design of Thirty Broadwick offers optimised lettable floor areas within Soho’s tight streetscape, and replaces a tired building with one that reflects the district’s modern character.

It now offers exemplar West End office space, with large, flexible floorplates, that meet the client’s exacting sustainability standards. The upper floors step back, creating large outdoor terraces which provide valuable amenity space.

The superstructure is a steel frame, based around a concrete core with cellular beams allowing for integration of services.

The structure’s frame repeatedly steps back at upper floors and this has been achieved by using in excess of 30 fabricated transfer beams.

“With this project came all of the challenges encountered when working within a busy city centre site. Logistically, great care and attention had to be given to negotiating the steelwork deliveries into site, as well as locating a 200t mobile crane on Broadwick Street to hoist in the 14t plate girder transfer members,” explains Severfield Project Director Adrian McCoy.

The site originally had three different buildings that had been combined to create one office building resulting in various levels, misaligned spaces and spatial inefficiencies.

Building tight against neighbouring party walls ensured that the new building maximised floor area.

In summary, the judges say a deceptively simple project where structural steel is showcased as the ‘go to’ system for maximising the development potential on such heavily constrained sites.

Photo © Andy Stagg Photography

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