Treklang - Oksenøya centre, Bærum

Oksenøya Centre includes a primary school with five classes for each grade, a nursery for 300 children, and a nursing home, in addition to a multi-purpose sports facility and an artificial turf pitch. All three buildings are near zero-energy buildings (nZEBs), and the project’s planning phase has received the highest environmental certification in Norway: BREEAM-NOR Outstanding. Previously, only one project in Norway had achieved this certificate according to the 2016 manual.

Timber and extreme low-carbon concrete

Much of the nursery, school, and nursing home are built in timber, while some parts are constructed with extreme low-carbon concrete. The buildings are planned for energy class A and have been optimized in regard to their compactness, daylighting, and space efficiency. Good density and insulation, along with energy-efficient technical facilities, help reduce energy consumption. The roofs are being outfitted with solar panels whose total surface is over 2,500 square metres. Seawater heat pumps provide district heating and cooling, and eco-friendly roofs will take care of the stormwater. The construction site was mostly fossil-free.

A thriving local community

Up to 2,000 people will be moving about in this area every day, and the various venues designed for multi-purpose use. The nursing home’s café can also be used as a community centre, the multi-purpose sports facility can also be used as a cinema, the assembly room can be rented by parents, and children can use playgrounds in their free time. The aim is to create a thriving local community.

The central square is the heart of the complex and an important cross-generational meeting place. The outdoor area includes space for both quiet and active activities. The nursing home’s outdoor area has a sensory garden.

Transport

Climate-smart transport  plays a major role at Treklang. Children, youth, and adults may walk, bike, and use public transport in this virtually car-free area. The complex includes many parking spaces for bicycles, but few for cars.

Stormwater

As far as possible, stormwater is taken care of by means of open solutions with drains and detention and retention ponds. After being detained locally, stormwater is channelled to the wetlands at Fornebu Park. The entire nursery and parts of the nursing home features eco-friendly roofs.

Low-carbon strategies

• Use of extreme low-carbon concrete (over 70 per cent greenhouse gas reduction)

• Extensive use of massive timber (the nursery and the nursing home)

• Use of local district heating and cooling (seawater with heat pumps)

• Use of solar panels and energy storage

• Near zero-energy building (nZEB)

• High prioritization of green mobility

• Fossil-free construction site 

The architects are Lille Frøen AS and Arkitema Arkitekter AS, with the Veidekke construction company serving as the project’s turnkey contractor and BREEAM AP.

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