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Timmeren, Arjan Van; Kristinsson, Jón. Urban lightness & reduction of technical infrastructure the first step in sustainable (urban) building. In: INTERNATIONAL CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITETURE, 18., 2001, Florianópolis. Anais... Florianópolis, 2001. p. 541-546.
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Abstract

In urban planning the space for water clearance, energy gaining and waste-treatment is mostly found outside cities. The enlarging of the bio-diversity and food production are sometimes even found abroad. The consequence is a need to transport energy, water and waste to centralised plants outside cities and therefore the requirement of an enormous amount of technical infrastructure and belonging use of energy, water and materials. Especially the technical infrastructure that is needed for the transportation of waste, -water and energy is a relative expensive feature in urban planning. On top of that, this infrastructure is often situated under the ground or in another not visible way. The involvement of users is little, they don’t have much influence on changing the quality and quantity of the transported ‘streams’ (water, energy, waste /materials), which eventually has a negative effect on their behaviour. Apart from the need to increase the awareness of the different streams, the costs for the needed infrastructure should be calculated more directly linked to the amount of use or ‘production’ of hese streams. Finding the optimum scale for sustainable technologies to optimise each stream and eanwhile reducing the costs of unnecessary technical infrastructure generates money to invest in ecological qualities and natural technologies concerning renewable energy and possible re-use of (waste)water. In made comparisons of environmental impact the factor transport and the needed centralised infrastructure is often left out, or ‘minimised’ to the necessary energy for transport. The actual use of 'goods' (water, fuel, raw materials and etceteras) is more complex, and with certain impact. It is self-evident that solutions to achieve the needed paradigm shift –a factor 20 improve (Ehrlich SPETH)- for a great deal can be found in reducing this technical infrastructure and the need to transport. It can be found in dematerialising the built society, with more emphasis on closing cycles through active- and passive systems near the spring of each 'problem'. This paper focuses on the reduction in used materials and energy through general ‘lightness’ of needed infrastructure by connecting different streams and their solutions in a more integral way and by finding more decentralised and more flexible solutions. It focuses on passive, dematerialising technologies using natural technology to gain energy, space and exhaustive materials. Apart from that a subject-typical research case in Ruigoord, Amsterdam (the Netherlands) is being explained. Keywords: reduction infrastructure, urban lightness, dematerialisation, energy-efficiency
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