Mercedes Benz Stadium / HOK architects
Opened in 2017, Atlanta’s new Mercedes Benz Stadium (MBS) designed by HOK architects has replaced the adjacent Georgia Dome (previous home to the Atlanta Falcons) providing a venue for 71,000 just outside the city center. The new stadium has an ambitious technological and sustainability agenda, with a total cost of $1.5 billion.
The focus of the design is the Stadium’s retractable roof – an epic central oculus controlled with eight triangular ‘petals’, operating like the aperture of a camera. While the retractable roof allows for natural ventilation and lighting, as well as flexibility in the building’s performance across weather and seasons, it’s clear that the real function of the device is as a piece of architectural theatre. HOK’s design principal Bill Johnson claims “The vision was that the opening would create a very tiny pinpoint of light on the Falcons’ logo at the 50-yard line, and as the roof retracted, the spotlight would become bigger and bigger”. Since antiquity stadiums have served as sites of ritualistic spectacle. As seen in our previous stadium case studies, Wanda Metropolitano and Stade de Bordeaux, large central apertures or oculi are a common theatrical device in stadium architecture, heightening the sporting spectacle to an almost religious experience through a framing of sky and contest.
Each hefty panel weighs 1600 tons, constructed with robust steel trusses and clad in ETFE. The panels slide past one another and lock into place on individual tracks, taking under 10 minutes to move from one position to another.
MBS’s central location is also a reflection of the contemporary stadium as a commercial platform. Since the 20th-century stadiums have traditionally been built on the periphery of the city where land is cheap, however, there is an increasing trend to move these mega-projects back to the city center ‘anchoring larger mixed-use real estate developments and creating “arena districts” that reshape commercial activity in the neighborhood.’ MBS is a district scale project – with ambitions to reshape not only the commercial activity of the neighborhood but also its provision of resources through sustainability measures.
The project’s sustainability objectives extend beyond the building itself to share resources with the surrounding neighborhood. It is the first professional sports stadium to receive a platinum rating in Leadership in Energy and Environmental Design (LEED) from the US Green Building Council. The main sustainability feature of the project is a massive cistern that can recapture more than 2.5 million liters of water. This huge water sink protects the surrounding neighborhood from flooding, which sits in the Proctor Creek Watershed, an area prone to flooding events. The water is reused in a cooling tower and for irrigation of surrounding landscape through a partnership with Trees Atlanta. Sustainable design further extends into the community through the creation of urban farming and open recreation spaces, and photovoltaic panels that generate energy for the stadium and surrounding neighborhood.
The Mercedes-Benz Stadium has been chosen to host the 53rd Super Bowl – America’s most-watched sporting event – which will take place in February 2019.