37º IAHS World Congress on Housing: - Universidad de Cantabria

XXXVII <strong>IAHS</strong><strong>World</strong> <strong>Congress</strong> on HousingOctober 26 – 29, 2010, Santander, SpainCODE: 268THE POSSIBILITIES OF WOOD IN SUSTAINABLERENOVATION OF MULTI-STOREY HOUSINGD.Sc (Tech.) A. Soikkeli, D.Sc (Tech.) M. Karjalainen and Professor J. Koiso-KanttilaDepartment of ArchitectureUniversity of Oulu, Finlande-mail: anu.soikkeli@oulu.fiKey words: wood, multi-storey housing, renovationAbstractThe last 50 years of Finnish apartment building have been dominated by the construction ofmulti-storey buildings by the use of prefabricated concrete elements. Wood would beexcellently suited for facade and roof repairs both technologically and economically as well asaesthetically. New wooden facades would be an option for repairing damaged concretefacades; the renovation could be done by using prefabricated wooden elements. Concerningbalcony and conservatory solutions, it is possible to hang lightweight balcony systems eitherstraight on the concrete frame or propped on light foundations of their own. With roofstructures, changes in roof shape and especially with the construction of additional storeys,wood would be a practical building material due to its lightness. The speed of woodconstructing is a specific advantage, making the disruption of repairs limited to a short periodof time.The project is about searching and visualizing high-quality wood-based solutions for thoroughrenovations and refurbishments of typical suburban multi-storey buildings. Five typical multistoreybuilding neighbourhoods, made of concrete and built in the 1960s and 70s and alreadydue for refurbishment, have been selected to design ideation. Of these objects, outlines formaster’s theses will be composed in architecture degree universities and faculties oftechnology. The theses will include ideas and visualizations on repairing suburban multistoreyconcrete buildings: renewal of facades taking energy conservation into account,renovation of balconies, building an elevator and possible lightweight additional storey(s) tofinance the elevator. The project also discusses areal unification and densification byadditional and supplementary building.Carbon balance analysis reveals the favourable environmental properties of wood. Afavourable impact on the climate is achieved with renovation that results in a low primaryenergy need, using materials and methods that produce minimal carbon dioxide emissions.37º <strong>IAHS</strong> <strong>World</strong> <strong>Congress</strong> On Housing Science 153