Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Holzbau Forum Nordic, Kouvola
Future technologies for energy efficient and competitive building construction
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Challenges ?
World total primary energy supply from 1971 – 2010 by fuel (Mtoe). Source: IEA report ‘Key world energy statisitics 2012’. http://www.iea.org/publications/freepublications/publication/kwes.pdf
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Challenges ?
Energy consumption in Germany 2011 in Mt oil-eq. Umweltbundesamt, www.uba.de
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Challenges ?
Energy consumption per capita in t oil-eq.
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Challenges ?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Challenges ?
www.hsy.fi
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Targets of reduction
Finland: 1990 2050 - 80% Metropolitan area: 2004 2030 -30% City of Helsinki: 2050 carbon neutral
www.helsinki.fi
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Buildings need a holistic approach !
Explanation of the passivehouse concept in a partly wooden Austrian super market near Reutte
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Buildings need a holistic approach ! + raw-material production + building products production (together named cradle-to-gate) + the production of the building itself (gate-to-site) + the use-phase of the building and + demolition and recycling (site-to-grave)
+ load-bearing capacity + energy-efficiency + moisture safety + fire safety + indoor air quality + resource-effciency ............
.... sustainable architecture !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Buildings need a holistic approach !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Life Cycle of building materials Source: Atsushi Takano, €CO2
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Transparent and clear boundaries and allocations are necessary!
system forest building product building
recycling, burning, abandon
residues seperate systems
building product building recycling, burning, abandon
system building = functional unit
CO2 PE
PE CO2
carbon-storage
benefit No.1!
benefit No.1 + No.2 = regrowing factor!
benefit No.2!
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Materials !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Materials !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Aus nachhaltiger Forstwirtschaft!
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Resource-efficiency! Lightweight vs. Massive timber?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Building services !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Building services !
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
And the solutions ?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Multi – storey timber buildings
The race is on! Michael Green, Vancouver, at WCTE 2012 in Auckland
! Holz4 – B&O Mietraching. Construction: CLT, TF. Picture: Huber&Sohn
Holz8 – B&O Mietraching. Construction: CLT, TF. Picture: Huber&Sohn
E18–Idee&Projekt UG J.Glogau.
Construction: CLT, TF. Picture: Kaden Klingbeil Architects
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Multi – storey timber buildings
The race is on! Michael Green, Vancouver, at WCTE 2012 in Auckland
!
The actual highest wooden residential in Mebourne, Australia. Construction: CLT. Picture: Lend Lease
Planned 14 storey building in Bergen, Norway. Construction: ? Norwegian Wood. Picture: bob/artec/sweco
Development of permitted number of storeys in Europe ≤ 2 storeys (incl. ground floor) 3 – 4 storeys ≥ 5 storeys
Development of allowed, unsprinklered, number of storeys in Europe, status 2010
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Construction ?
Huber & Sohn, Bachmehring
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Example: Window and ventilated facade
first defense
second defense
second defense is in addition sealed to window frame
Airtight layer and vapour barrier
Taping of OSB
Taping airtight layer to window frame
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Test Houses in Otaniemi
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Data acquisition walls
Temperature and absolute humidity profiles in the North wall of the gypsum board test house (mineral wool insulation; moisture variable vapour barrier)
Temperature and relative humidity profiles in the North wall of the plywood and gypsum board test houses (mineral wool insulation)
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
acquisition
- Due to outside weather conditions or diffusion from the inside, the relative humidity in the outside layers of the insulation can rise close to 100%. If then the temperature drops below zero in this area, white frost as commonly observed on foggy winter mornings may form on the inside surface of the outer wall cladding panel
- As no sunrays can temporarily melt this frost during the day, the ice layer may build up over time furthermore blocking diffusion to the outside
- Parts of the North walls were opened in the beginning of March, when outside temperatures were below zero, to investigate this phenomenon
no icing or moisture accumulation was observed
Relative humidity and temperature on both sides of the wood fibreboard until the time of icing investigation
Icing
Simulation tools for building physics design and related indoor climate are available
and very well evaluated for many climate conditions!
Limnologen, Växjö, Schweden
8-Geschosse Wohnen
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Or self protecting?
Kouvola housing competition, 2011
Architekt:
Hermann Kaufmann
Ingenieure: bauart
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Cooperation
Kouvola housing competition, 2011
Architekt:
Hermann Kaufmann
Ingenieure: bauart
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Quality management and third party control!
+ Complete planning before working! + Teamwork of planners – architects, structural engineers, building services + Airtightness check – Blower Door control + Production control, incl. third party control + Fire safe construction control + Quality label – checked building quality + Transparent Life Cycle Assessment + Eco label with focus on energy-, resource- and carbon footprint assessment
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
B&O Mitraching
8-storey dwelling house, April 2011 max. 25 kWh/m2a heat energy
Architects: Schankulla Civil Eng.: bauart
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Third party control!
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Market
Metropolitan area grows - from 2004 – 2030 by approx. 225,000 citizens
+ 7,0 Mio. m2 living area
If 20% are timber structures it is an invest of 2,8 Billion € = 140 Mio. €/a
www.helsinki.fi
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Energy-efficient renovation!
Sources: Kimmo Jebens,Frank Latttke
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Energy-efficient renovation!
Sources: Kimmo Jebens,Frank Latttke
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Realschule Buchloe e3 architekten Marktoberdorf Josef Ambros GmbH
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Realschule Buchloe e3 architekten Marktoberdorf Josef Ambros GmbH
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Cooperation
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Recycling ?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Simplification ! Technology was the answer – but what was the question?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Simplification !
Patchworkhaus Müllheim
Pfeifer Kuhn Architekten, Freiburg
Bild: www.baunetzwissen.de
www.windside.com
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Passive Active !
Plus-energy building Berlin, Bundesbauministerium, Berlin
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Regulations
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
FiDiPro Energy Efficient Timber Houses and Areas
Prof. Stefan Winter
Regulations
A common Building Regulation for
Europe!?
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Chair of Timber Stuctures and Building Construction
Univ.--Prof. Dr.-Ing. Stefan Winter
Thank you very much for your attention !
