Setra has been commissioned to supply locally produced cross-laminated timber and glulam for the Lumi district in Uppsala, Sweden. There, Vasakronan is transforming a 1970s concrete building into state-of-the-art and more sustainable office space.
Setra’s deliveries amount to a total of 1,200 m3. The project involves six beams made of cross-laminated timber for new floors in three blocks, a new atrium linking the buildings with footbridges made of cross-laminated timber, and glulam for the roof structure of the atrium.
Vasakronan is Sweden’s largest real estate company and is owned by the First, Second, Third and Fourth AP Funds. The company owns, manages and develops centrally located office and retail properties in Stockholm, Gothenburg, Malmö and Uppsala.
The Lumi district in Uppsala is part of the Södra city urban development project. An existing office building is to be extended by three floors without making changes to the foundations. The solution is to dismantle a very heavy concrete facade and replace it with much lighter material.
“By using timber beams made of cross-laminated timber instead of concrete, we save weight. And as we’re dismantling the concrete facade at the same time, there’s no need for underpinning,” explains Vasakronan’s project manager Jonas Wahlström.
Lumi will consist of three blocks connected by an atrium. There will be a total of seven floors with approximately 15,500 square metres of open and bright office space. The street level will be redesigned to accommodate small shops, restaurants and other services.
The production facility for cross-laminated timber is part of the Setra Timber Industry Centre in Långshyttan, southern Dalarna. The site also produces glulam and wood components. Setra’s value chain from the forest to the finished wood products is extremely short, delivering a low carbon footprint. From the factory in southern Dalarna, transport to Greater Stockholm and Mälardalen is handled by a haulage company that only uses biofuels. The structural elements are delivered in exactly the right order for highly efficient assembly on site.
