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Sustainable construction of healthy and circular schools in Amsterdam

Hedgehog Company and the Circlewood consortium are one of three winners for the sustainable construction of between nine and thorty schools in Amsterdam over the next ten years.

Children are the sustainability ambassadors of the future. That is Circlewood's vision when it comes to the construction of new school buildings in Amsterdam. Circlewood is a consortium consisting of Oosterhoff, Noordereng Groep, Heko Spanten, Lomans, DWA, Ferross Staalbouw and Hedgehog Company. TNO (Dutch research institute) is involved as an independent knowledge and development partner, and David Gianotten (from OMA) is the creative director of Circlewood. The Municipality of Amsterdam and Circlewood found each other in their ambition for high-quality, sustainable and flexible school buildings. Circlewood, together with two other consortia (Hegeman and M3V), has therefore won the tender from the Municipality of Amsterdam to build between nine and thirty new schools over the next ten years. The municipality uses the new tendering method for this, the Innovation Partnership (IPS).

Impression of a playful interior of the new school buildings

Sustainability requires new ways of thinking: tenders

The Innovation Partnership gives market parties the space to (further) develop innovations and at the same time build several sustainable, flexible and high-quality school buildings within budget. Last year, 32 parties were allowed to present their plans to the municipality. Subsequently, five were selected by a jury and now three winning teams have emerged. They conclude a ten-year framework agreement with the municipality for the realization of a total of at least nine school buildings. These parties will enter a research and development phase in the coming six months, in which they can further develop their concept and working method. Ultimately, each school can choose from three designs, which are then realized by the associated parties.

Impression of the PE classroom in the modular and sustainable school

Sustainable buildings for sustainability ambassadors

André Speksnijder (ABT) on behalf of Circlewood: “The look and feel of each school will be unique, but the uniqueness of our design is on the inside: a school that is ultimately sustainable and biobased. It is our philosophy that if you want to create a sustainable society, you have to start with primary education where the children are formed. If they grow up in a sustainable environment, they will look at the future differently than if they were taught in a concrete bunker, so to speak.” Karin Kuipers (Noordereng Group) adds: “At Circlewood, we want our children to develop into sustainability ambassadors of the future. Our consortium is intrinsically motivated to shape our children's environment in such a way that the children are inspired, motivated and activated to leave their world better than we did and do.”

Outside impression: these schools are almost 100% bio-based constructions

The HoutKern Sustainable Construction method

The innovative HoutKern Building Method will be applied at the schools. This method was developed by the parties that now form Circlewood and was first used in The Natural Pavilion at the Floriade Expo 2022. The basis of the HoutKern Construction Method is formed by a CLT floor, a steel knot and wooden columns. André Speksnijder: “Think of it as a large K'nex box with which we put buildings together. In addition to standard modules, this K'nex box also contains various expansion elements, with which school buildings can be enriched playfully and still have their own character.”

Inside impression: clear sight of the boundaries between the different modules.

The HoutKern Building Method helps to realize life-resistant and adaptive buildings. For example, the school buildings will first and foremost have to be climate-adaptive and also socially-adaptive. A school building must be able to grow and shrink during its lifespan. It must also be able to move along with developments in education.

The kick-off of the research and development phase took place on 17 November with the three consortia and the Municipality of Amsterdam. Circlewood is ready for this important assignment!

Pictures: © Studio A Kwadraat

Frequently asked questions

Circlewood is a consortium, which includes Hedgehog Company, that won a tender from the Municipality of Amsterdam to build between nine and thirty new sustainable school buildings over ten years. The project's vision is to create high-quality, flexible, and biobased environments that inspire children to become sustainability ambassadors.

The Innovation Partnership (IPS) is a tendering method used by the Municipality of Amsterdam that allows businesses to develop innovations while building sustainable projects within budget. Winning consortia enter a research and development phase to refine their concept before concluding a ten-year framework agreement to realize the buildings.

The HoutKern Building Method is an innovative, modular construction technique used to create adaptive and biobased buildings. The system is based on a core of a CLT floor, a steel knot, and wooden columns, which functions like a large 'K'nex box' to assemble buildings that are playful, unique, and life-resistant.

Modular and adaptive buildings are important for sustainability because they are designed to be life-resistant and can adapt to changing needs over their lifespan. A building that is socially-adaptive can grow, shrink, or be reconfigured to align with new developments, ensuring long-term utility and reducing the need for future demolition and reconstruction.

The core philosophy is that a sustainable society begins with primary education, where children's values are formed. The project believes that by having children grow up in an inspiring, biobased environment instead of a 'concrete bunker', they will be motivated to leave the world in a better state.

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