Circular tendering

Client: OVAM – Vlaanderen Circulair
Partners: Universiteit Antwerpen and Bureau Bouwtechniek 
Timing: 2018-2021
Status: realized

Research & development I Circular building

BB and the University of Antwerp have received subsidies from Vlaanderen Circulair for research into circular tendering.

Circular tendering?
It is not the price that is the decisive factor when tendering projects, but the circularity of the solution. The focus is shifted from minimum cost to minimum life-cycle cost.

In circular procurement, the licensing authority shapes the procedure in such a way that circular construction is encouraged. Price is no longer a criterion, there is an investment budget and an operational cost, and the market is challenged to come up with the most circular solution for that money. Circular criteria are set, such as a certain degree of reversibility, a certain percentage of reuse and the use of a certain number of circular materials, on which the building parties are scored. (Jonathan Verdonck, Camp C at Circubuild)

In practice
Bureau Bouwtechniek convinced the project team of the advantages of circular construction and circular renovation. In order to avoid the often self-evident demolition and complete new construction, we examine per building what can be retained or reused on this or another site or needs to be renewed. 

  • The circular character of the building project is included in the execution file with a first step towards use, management and maintenance.  
  • Contractors are convinced to work in a circular way.  
  • Producers are sought who implement the circular principle in their company and offer innovative systems and materials.  

The University of Antwerp conducts extensive LCA studies to support the circular idea in figures. Bureau Bouwtechniek leads this research project.

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Team BB: ir. arch. Katrien Van Lierop, ir. arch. Jona Van Steenkiste, arch. Raf De Preter, ir. arch. Nadja Van Houten

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