The Broadgate Exchange House in London, celebrated for its simple yet ingenious structural system that unifies design and function in the mid-century Modernist tradition, has been selected for the 2015 AIA Twenty-five Year Award. Designed by Skidmore, Owings, and Merrill (SOM) and completed in 1990, the Exchange House is a recognizable presence in central London.
Recognizing architectural design of enduring significance, the Twenty-five Year Award is conferred on a building project that has stood the test of time by embodying architectural excellence for 25 to 35 years. Projects must demonstrate excellence in function, in the distinguished execution of its original program, and in the creative aspects of its statement by today’s standards. The award will be presented to SOM in May at the AIA National Convention in Atlanta.
Exchange House, an elegant ten-story office building that spans over the merging tracks of London’s Liverpool Street Station, is located in London’s Broadgate Development. As one of the last remaining areas for development at Broadgate, SOM was able to envision an opportunity to resolve these challenges through a multi-faceted approach encompassing architecture, engineering, and masterplanning.
The structural and architectural solutions for this development were entirely intertwined, embracing the constraints of the site and using them to fuel a clear, elegant solution that dramatically overcomes the challenges beneath it. The building is suspended over the rail lines below via four, seven-story tied arches that bridge 256ft (78m), while only five percent of its footprint touches the ground. The centrally located lift core, fire stairs, and even the lobby are suspended from this bridge structure, touching the plaza beneath it out of necessity for access rather than support. By elevating the building the opportunity to bring an open space beneath was created, connecting Exchange Square to the south to Primrose Street to the north.
Exchange House is the first project in the United Kingdom and only the third international project to win the award. It is the sixth SOM project to win the award.
Related Stories
Modular Building | Mar 10, 2015
Must see: 57-story modular skyscraper was completed in 19 days
After erecting the mega prefab tower in Changsha, China, modular builder BSB stated, “three floors in a day is China’s new normal.”
Retail Centers | Mar 10, 2015
Retrofit projects give dying malls new purpose
Approximately one-third of the country’s 1,200 enclosed malls are dead or dying. The good news is that a sizable portion of that building stock is being repurposed.
Office Buildings | Mar 7, 2015
Chance encounters in workplace design: The winning ticket to the innovation lottery?
The logic behind the push to cultivate chance encounters supposes that innovation is akin to a lottery. But do chance encounters reliably and consistently yield anything of substance?
Codes and Standards | Mar 5, 2015
Charlotte, N.C., considers rule for gender-neutral public bathrooms
A few other cities, including Philadelphia, Austin, Texas, and Washington D.C., already have gender-neutral bathroom regulations.
Office Buildings | Mar 5, 2015
Goettsch Partners unveils plans for dual office towers in Warsaw
The Mennica Legacy Tower development is divided into a 35-story tower located on the south east side of the site and a 10-story building on the west side.
High-rise Construction | Mar 4, 2015
Must see: Egypt planning 656-foot pyramid skyscraper in Cairo
Zayed Crystal Spark Tower will stand 200 meters tall and will be just a short distance from the pyramids of Giza.
Transit Facilities | Mar 4, 2015
5+design looks to mountains for Chinese transport hub design
The complex, Diamond Hill, will feature sloping rooflines and a mountain-like silhouette inspired by traditional Chinese landscape paintings.
Office Buildings | Mar 3, 2015
Former DuPont lab to be converted into business incubator near UPenn campus
The new Pennovation Center will provide collaborative and research spaces for educators, scientists, students, and the private sector.
Office Buildings | Mar 1, 2015
Google unveils dramatic tent-like, modular-focused plan for corporate HQ
The master plan by Bjarke Ingels and Thomas Heatherwick will wrap highly flexible office blocks in soaring translucent canopies.
Office Buildings | Feb 26, 2015
Using active design techniques to strengthen the corporate workplace and enhance employee wellness
The new Lentz Public Health Center in Nashville, Tenn., serves as a model of how those progressive and healthy changes can be made.