agosto 2017 vol. 3 num. 6 - SBDS + ISSD 2017
Artigo Completo - Open Access.
Carbon footprint of pre-fabricated wood buildings
This study reports on a study examining the potential of reducing greenhouse gas (GHG) emissions from the building sector by substituting steel and concrete building structures with timber structures, as well as traditional construction for prefabricated methods. A multi-storey timber residential building in Quebec City (Canada) was chosen as a baseline scenario. This building has been constructed according to the concept of green environmental protection and sustainable development. Life Cycle Assessment (LCA) approach is applied to compare the climate change impact (CC) of timber structures. In this scenario of this research, material production and construction (assembly, waste management and transportation) were assessed. Additionally, a LCA that comprises eight actions divided in four low carbon strategies, including low carbon materials, material minimization, reuse and recycle materials and adoption of local sources and use of biofuels were evaluated. The results of this study confirm the positive effect using prefabricated approach in buildings as an alternative construction method based on timber-frame-materials in Quebec. By using the CO2 emissions as global indicator, the CC saving per m2 floor area in baseline scenario produces up to 25% fewer emissions than traditional buildings. If the benefits of low carbon strategies are included, the timber structures can cause up 38% lower CC than the original baseline scenario. The analysis suggests that CO2 emissions reduction in the construction of buildings as climate change mitigation is perfectly feasible by following different working lines. We concluded that the four strategies implemented have an environmental benefit in reducing greenhouse gases emissions. The reuse wood waste into production of particleboard has the greatest environmental benefit when considering temporary carbon storage.
Palavras-chave: Timber structures, carbon reduction strategies, life cycle assessment, climate change, carbon footprint,
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Padilla-Rivera, Alejandro; Balnchet, Pierre; "Carbon footprint of pre-fabricated wood buildings", p. 88-95 . In: Anais do Simpósio Brasileiro de Design Sustentável e International Symposium on Sustainable Design 2017.
São Paulo: Blucher,
ISSN 2318-6968, DOI 10.5151/sbds-issd-2017-015
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