Under the title "The recycled City", Stadtluft in Winterthur in the
canton of Zurich explores the question of how so-called grey energy
is changing urban planning and construction. For example, it
addresses the question of whether the classic new replacement
building should be made superfluous in the future through
conversions. And what does the concept of sustainability mean for
the development of urban neighbourhoods? According to which
principles should they be redesigned? Another topic is the question
of how cities can develop their own circular economy. Is a
self-sufficient construction industry for cities possible one day?
What systems and infrastructure are needed for this?
Grey energy refers to the energy contained in a building that was
used for construction, production and transport. To calculate the
energy consumption of a building, construction, operation and
demolition are therefore assessed.
The fact that used materials are valuable is recognised by the
circular economy approach, which aims to reuse building elements
several times. According to a UN report, the construction and
building industry was responsible for 38 per cent of global CO2
emissions in 2019. In Switzerland, the construction industry
produces 74 million tonnes of waste per year, which corresponds to
around 85% of Switzerland's total waste volume. Whether and how grey
energy can be integrated into the investment calculation of a
building is currently the subject of debate. In general, the
"decarbonisation" of the construction industry is only just
beginning.
The past, present and future of urban sustainability will be
comprehensively analysed. Decision-makers from the worlds of
politics, administration and lobby groups of three cities will all
exchange views. The workshops will be enriched by input from
artists, scientists and members of the public. By invitation only.
The team Winterthur/Kanton Zurich presents the location/situation of
the three selected planning examples and goes into the history and
current situation of the planning, presents the problems and the
selected or envisaged Winterthur solutions, which are based on the
laws and canton of Zurich. Then the colleagues from Berlin and
colleagues from Berlin and Vienna then take the floor and analyse
the Winterthur situation from their point of view and present ad-hoc
"Berlin" and "Vienna" solutions.
Programme
(PDF).
Introductory speech by the Swiss-German bestselling author Jonas
Lüscher.
Discussion at Blauer Saal (Campus Stadt-Mitte ZHAW) with
decision-makers from politics, city administrations and interest
groups from Berlin, Vienna and Winterthur.
Registration (PDF).
