“The Norra Tornen project represents a milestone achievement for us,” said De Graaf, partner at OMA.
“[It’s] the culmination of an ongoing effort by our office to create the next generation of modern housing typologies, creating the largest possible variety from a limited number of prefabricated elements, allowing the usual formalism of the apartment tower to give way to individuality, domesticity, and perhaps even humanism.”
Alternating protruding windows, recessed terraces, and a facade of ribbed concrete brushed with aggregate pebbles were included as “echoes of brutalist architecture”, he added.
The tower is part of the Norra Tornen development in Hagastaden, a new district to the north of the Swedish capital.
Developers Oscar Properties purchased the land from the City of Stockholm in 2013, with OMA adapting the pre-existing building envelopes left from a cancelled project by architect Aleksander Wolodarski.
Innovationen Tower has 182 homes, from one bedroom apartments, measuring 44 square metres, to a 271-square-metre penthouse. Residents also have a cinema room, dinner room, guest apartment, gym and sauna, and shops on the ground floor.
A second 110-metre tower, containing another 138 homes, is due to complete in 2019.
Norra Tornen’s wall-to-floor ratio – the amount of external walls compared to the internal floor space – is one, as the apartments have high ceilings and large windows. A typical tower’s wall-to-floor ratio is 0.5, but as daylight is limited for half the year in Sweden the architect and developer decided to add taller windows.
OMA’s modular system of precast concrete panels allowed construction to continue even when winter temperatures dropped to below minus five degrees Celsius, where in-situ pouring becomes impossible.
Another Oscar Properties project completed in Stockholm on the same day. BIG’s housing development, called 79 & Park, was made from prefabricated timber modules and stacked to look like a “manmade hillside”.
OMA recently completed a two of the three towers it is building in Miami, which feature an undulating facade of terraces arranged in a grid.
Partner in charge: Reinier de Graaf
Associate: Alex de Jong
Team: Philippe Braun, Diana Cristobal, Roza Matveeva, Edward Nicholson, Peter Rieff, Carolien Schippers
Associate: Alex de Jong
Team: Alexander Giarlis, Timur Karimullin, Vladimir Konovalov, Edward Nicholson, Victor Nyman, Vitor Oliveira, Cecilia Del Pozo, John Paul Pacelli, Peter Rieff, Carolien Schippers
Associates in charge: Alex de Jong, Michel van de Kar
Team: Isa Olson Ehn, Tobias Jewson, Edward Nicholson, Peter Rieff, Silvia Sandor, Lukasz Skalec, Jonathan Telkamp
Structural engineer: Arup
Mechanical engineer: Arup
Façade engineer: Arup Façade Engineering, local engineer: Sweco
Fire safety: Tyréns AB
Fire safety: Tyréns
Code consultants: Tengbom
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