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The objective was the sustainable renovation and redensification of two demonstration buildings on the Burgfried residential estate in Hallein. The minimally invasive renovation was carried out through the use of a newly developed multi-functional façade, allowing the residents to remain in the building throughout the process.
Multi-storey urban housing estates in open construction, which were built all over Europe in the
1930-1960s, have a lot of potential for improvement and redensification, which often remains
unused. Problems are the insufficient energetic standard, the noise and pollutant load by
increasing traffic, the demographic overaging of the settlement, the necessary adaptation to
today’s inhabitant needs, as well as the covering of the future housing need like e.g. barrier-free
dwellings. The results of the previous exploratory project “Wohnen findet Stadt” showed
considerable unused housing reserves, as well as a great interest of the residents in
comprehensive redevelopment measures in the Burgfriedsiedlung Hallein.
The project itself combines the latest technologies from the fields of sound insulation,
construction and building technology with requirements from the areas of mobility, energy,
infrastructure, open space and demography with participation of the residents. A particular
innovation is the use of a multifunctional façade, which includes an intelligent new combination of
largely existing technologies such as component activation and sound absorbers. It serves as an
exemplary upgrade of existing buildings worthy of preservation but in need of major renovation
for the requirements of the 21st century
Based on the available results of the previous exploratory project, the City of Hallein implemented
a demonstration building in the Burgfriedsiedlung in the form of renovation (12 residential units)
and redensification (7 residential units) through a single-story addition starting in 2018. The entire
process was accompanied both by a socio-scientific support and a detailed monitoring of the
technical building systems. After evaluation of the first two heating periods, a positive balance can
be drawn. The use of the innovative heating system results in savings of about 45% of the heating
energy demand in the first heating period, and after optimization of the control system about 50%
for the second heating period.
The measures planned and implemented as part of the demo project have been and will be
subjected to an intensive monitoring process. This concerns in particular the behavior of the
multifunctional facade as well as the energy supply of the objects (component activation, PV). This
monitoring and a feedback by e.g. adjusting the control strategy is essential for the success of
such a project. The complex interactions that result from the integrated approach chosen in the
project are also to be evaluated and the measures taken are to be subjected to a control of
success – especially in the area of conflict between noise reduction, open space design and
mobility.
local
Project -Website:
Publications at:
Sustainable Built Environment D-A-CH Conference 2019 in Graz
2019 Buildings XIV International Conference in Clearwater Beach, Florida
Smart Cities in Smart Regions 2018 in Lahti
Building Simulation 2019: 16th Conference of IBPSA in Rome
Contact
Paul Schweizer Architekt
Paul Schweizer
Project consortium leader
arch@pschweizer.at
