The lucky owners who have moved in to the world's tallest timber-framed building live in a unique apartment complex. The building is the largest of its kind in the world – with a keep-fit studio and large roof terrace. Sweco's technical experts in timber structures made it possible to realise a 50 m high, 14 storey building in Bergen.
Treet, the world's tallest timber-framed building
Bergen og Omegn Boligbyggelag
Building and structural engineering, fire technology, HVAC, electrical systems, geotechnics, acoustics, project management
Everyone had to think new
Since the idea was conceived, Sweco has developed the project in collaboration with the developer, Bergen og Omegn Boligbyggelag (BOB), Moelven Limtre, module supplier Kodumaja, Artec architects and the Norwegian University of Science and Technology. BOB has placed great trust in us. At the same time, all participants have been forced to think in new ways in order to build the world's tallest timber-framed building by the Puddefjord Bridge in Bergen.
Building a 50 m high timber-framed building is groundbreaking
In practice it is almost the same as building a bridge and placing it on its side. The apartments in the building consist of prefabricated modules that have been stacked up to 4 floors. Each fifth storey is a special reinforced storey supporting a concrete slab. Sweco has been consultant for all technical disciplines and has had responsibility as design manager. Our expertise in timber structures has been key.
The use of wood is more sustainable
Wood is a natural material that can be produced using minimal energy. When trees grow they absorb a high volume of carbon dioxide. Also, the completed timber-framed building will bind more than 1,000 tonnes of CO2. This is in stark contrast to buildings made of concrete and steel, which require much more energy to produce and which release large amounts of CO2 during the production process.
The building has attracted international attention
As early as the design phase, the concept attracted major interest. This shows that the authorities in several countries have become more environmentally aware and are attempting to influence developers to use more timber in construction projects. A timber-framed building that has been properly designed also costs less than other types of building.
Photo/illustration: ARTEC, 3Seksti