Smart building: The long way to a circular economy

 

 

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Demolition waste – Photo Jim Henderson Licensed under Creative Commons

 

Possibly, in 2050 the word waste can be removed from our dictionaries. At that time, the Dutch economy will be circular according to the government. Meaning in essence that all raw materials are reused infinitely. In order to reach this goal, an agreement with respect to the use of raw materials has been concluded between 325 parties. Its first milestone is halving the use of primary raw materials before 2030[1].

Many are sceptical of the outcomes of this agreement. Admittedly, 38.7% of the Dutch population feels that we are on the right track, although progress is slow. Jan Jonker[2], professor of business administration at Radboud University, is more pessimistic:  We do not think circular yet. Institutions, from legal to fiscal, are fully geared to the linear economy.

Amsterdam is making progress. In 2015, the municipality explored opportunities for a circular economy, which have been published in Amsterdam Circular: Vision and roadmap for city and region[3]. Dozens of projects have been started, albeit mostly on a small scale and starting from a learning-by-doing perspective.

The report Amsterdam circular; evaluation and action perspectives[4](2017) is an account of the evaluation of these projects. It concludes that a circular economy is realistic.  The city has also won the World Smart City Award for Circular Economy for its approach – facilitating small-scaled initiatives directed at metropolitan goals. Nevertheless, a substantial upscaling must take place in the shortest possible time.

Below, I focus on the construction sector, which includes all activities related to demolition, renovation, transformation and building. Its impact is large; buildings account for more than 50% of the total use of materials on earth, including valuable ones such as steel, copper, aluminum and zinc. In the Netherlands, 25% of CO2 emissions and 40% of the energy use comes from the built environment.

By circular construction, we mean design, construction, and demolition of houses and buildings focused on high-quality use and reuse of materials and sustainability ambitions in the field of energy, water, biodiversity, and ecosystems as well. For example, the Bullitt Centerin Seattle, sometimes called the greenest commercial building in the world, is fully circular[5]

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Photo: James Provost licensed under Creative Commons

The construction sector is not a forerunner in innovation but of great importance with respect to circularity goals. The Amsterdam metropolitan region is planning to build 250,000 new homes deploying circular principles before 2050.

The evaluation of the projects that have been set up in response to the Amsterdam Circular Plan has yielded a number of insights that are important for upscaling:

The most important is making circularity one of the key criteria in granting building permits.

The others are the role of urban planning and the contribution of urban mining, which will be dealt with first.

The role of urban planning

Urban planning plays a crucial role in the promotion of circularity. It is mandatory that all new plans depart from circular construction; only then a 100% reuse of components after 2050 is possible. The renovation of existing houses and buildings is even more challenging than the construction of new ones. Therefore, circular targets must also apply here. Dialogue with the residents, and securing their long-term perspective is essential. The transformation of the office of Alliander in Duiven into an energy neutral and circular building is exemplary (photo below).

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Photo: VolkerWessels Vastgoed

The contribution of urban mining

Existing buildings include countless valuable materials. The non-circular way of building in the past impedes securing these materials in a useful form during the demolition process. Deploying dedicated procedures enables the salvation of a large percentage of expensive materials. In this case, we speak of urban mining. Unfortunately, at this time re-used materials are often more expensive than new ones.

Therefore, a circular economy will benefit with a shift from taxes on labor to taxes on raw materials.

Issuing building permits

The municipality of Amsterdam made a leap forwards with respect to issuing building permits to enable circularity[6]. Based on the above-mentioned definition of circular building, five themes are addressed in the assessment of new building projects: Use of materials, water, energy, ecosystems as well as resilience and adaptivity. Each of these themes can be scrutinized from four angles:

– the reduction of the use of materials, water and energy

– the degree of reuse and the way in which reuse is guaranteed.

– the sustainable production and purchase of all necessary materials.

– Sensible management, for example, full registration of all components used.

Application of these angles to the five themes yields 32 criteria. A selection of these criteria is made in each project, depending from whether the issuing of building permits or renovation is concerned, and also from where the building takes place. For instance, a greenfield site versus a central location in a monumental environment.

One of the projects

In recent years, the municipality of Amsterdam has included circular criteria in four tenders: Buiksloterham, Centrumeiland, (residential buildings), the Zuidas (offices) and Sloterdijk (retail and trade). On the Zuidas, the first circular building permit was granted in December 2017. 30% of the final judgment were based on circularity criteria.

The winner is AM, in collaboration with Team V Architects. In their project Cross over, they combined more than 250 homes with offices, work space for small businesses and a place for creative start-ups. The project doesn’t have a fixed division between homes and offices. Reuse in future demolition is facilitated by a materials passport and by building with dry connections, enabling easy dismantling.

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Crossover – photo Zwartlicht

Need to organize learning

The detailed elaboration of the 32 criteria for circularity to be applied in tenders, covers more than 40 densely printed pages. One cannot expect from potential candidates to meet the requirements routinely. It would therefore be welcomed if the municipality of Amsterdam shared its knowledge with applicants collectively during the submission process.

I also would welcome ‘pre-competitive’ cooperation by communities with manufacturers, knowledge institutions, clients and construction partners with the aim to develop circular building.

This involves for instance standardization of the dimensioning of components (windows, frames, floorboards) and the ‘rehabilitation’ of ‘demolished’ components while maintaining the highest possible value. This might be combined with a database in which developers can search for available components.

In Zwolle, another strategy is followed: the municipality, housing corporations and construction companies have formed a Concilium[7], which aims to significantly expand the already planned construction of houses, using circular principles.

Circularity requires closing circles. Collaboration within the supply-chain is one of these.

[1]https://www.rijksoverheid.nl/documenten/rapporten/2016/09/14/bijlage-1-nederland-circulair-in-20

[2]https://www.duurzaambedrijfsleven.nl/circulaire-economie/27945/de-stand-in-het-land-zijn-we-al-een-beetje-circulair

[3]https://www.amsterdam.nl/wonen-leefomgeving/duurzaam-amsterdam/publicaties-duurzaam/amsterdam-circulair-0/

[4]https://www.amsterdam.nl/wonen-leefomgeving/duurzaam-amsterdam/publicaties-duurzaam/amsterdam-circulair-1/

[5]http://www.bullittcenter.org

[6]https://www.amsterdam.nl/wonen-leefomgeving/duurzaam-amsterdam/publicaties-duurzaam/amsterdam-circulair-1/

[7]https://www.weblogzwolle.nl/nieuws/61325/ambitieus-plan-voor-zwolse-woningmarkt.html

 

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Swap smart city for inclusive city

Last year I wrote 24 short essays about smart cities. They are collected in an e-book, that can be downloaded for free here. What to expect?

Smart city tales

For more than 10 years, ‘smart’ has been a ‘leitmotif’ for tackling urban problems. Companies such as IBM and Cisco, and later also Apple, Amazon and Google all emphasised that technology is the key to their solution. Many city administrators, entrepreneurs and young starters felt attracted to this idea.

But why these blinkers? Anyone who focuses blindly on technology as the solution to contemporary problems will quickly lose sight of the problems themselves. They underrate the problems caused by technology itself and also that for many problems other solutions than technological ones are indispensable.

Some examples of problems that make people worried

  • Will I come around with my income?
  • Do I find an affordable house?
  • Is there still work for the children?
  • Is the air that I breathe healthy?
  • Why is my manager so unreasonable?
  • How secure is the internet?
  • Who will take care of my mother later?
  • Can I trust what I eat?
  • Developments are all going too fast for me
  • Who is actually in charge
  • Does a world war will break out?
  • Does my child like to go to school
  • Who can I still trust?
  • Can I still say what I think?
  • Is my country still my country?
  • Why do top managers earn so much money?

Core values

Reducing these problems to four categories proved to be helpful:

  • Threat to basic needs
  • Pillage of the earth
  • Injustice
  • Abuse of technology and data

Each of these categories also refers to core values ​​that in mutual connection will improve the quality of life in a country and the happiness of its inhabitants.

Inclusive growth

 Well-being

The satisfaction of our basic needs such as livelihood, housing, education, health care, social contacts and personal growth. There is still a lot to improve here.

 Sustainable prosperity

The earth has all the ingredients for a healthy and even prosperous life for us and our offspring. This requires a circular economy based on reuse of resources, the elimination of CO2 emissions, and a less materialistic attitude. The awareness is growing, there is still a lot to do.

Justice

The fact that we live together with others is of vital importance, whether it is a partner, family, the street, the city or the country. The quality of our social life depends on the mutual acceptance of equality and diversity and the balance between give and take. Here too, humanity still has a lot to learn.

Digital connectivity

Just like all forms of technology, computerization is able to support the other core values, but is also a value in itself. ICT adds a new dimension to human creativity and inventiveness and can improve the quality of our lives. However, the virtues of digital connectivity ought not to be appropriated by certain groups. Interoperability, ‘edgeless computing’, ‘blockchain’ and the use of open software standards and open data can contribute to prevent this.

The four core values ​​can be at odds with each other, but also reinforce each other. In the latter case, I refer to inclusiveness.

In each of the 24 short essays the ‘smart city idea’ as a starting point. Sometimes politicizing, for example when it comes to the way the big technology companies take control of society, but also anecdotal, for instance in the smart cities cases like PlanIT Valley near Porto, but also very practical, for example in introductions to circular construction, electricity-generating windows and the storage of energy.

In the final essay I propose to replace the idea smart with inclusive growth. To become more concrete about what that means, I have drawn up a charter that every city or region in the world can use. I already recognize the quest for inclusiveness of a number of cities such as Barcelona, ​​Amsterdam, Copenhagen, Melbourne and Seoul. However, these and all others ones still have a long way to go.