Austria: Wooden high-rise building shows ecological advantages

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Source: thinkstep

The application of an LCA as part of an integrated planning process for a building is an essential step towards sustainability. Only by applying LCA from the beginning can a building be optimized ecologically. The goal of the research project “8+” was to analyse a multi storey office building designed as a timber construction. The building’s technical feasibility as well as its ecological performance was determined. The LCA included raw material recovery, transport, prefabrication, construction, use over 25 years, and end of life.

A 17 storey-building with 13,500m² of useable area was found to be feasible. A wood building uses only 30% of the material of a conventional building. The CO2-e balance for the construction and end of life phase showed emissions of 128 kg CO2–e/m² of useable area which is significantly lower than for conventional constructions.

The use phase is responsible for 45 to 70 % of the environmental impacts depending on the impact category. The building under examination showed considerable advantages in terms of energy consumption and Global Warming Potential. The next phase of this project will be the overall optimisation and construction of the building. An LCA approach will continue to be applied in cooperation with all members of the research team.

more information www.pe-international.com

 

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