Greenhouse Gas Emissions from Excavation on Residential Construction Sites

Perry Forsythe
Grace Ding

Abstract


Despite considerable research concerning the manifestation of greenhouse gases in the usage of buildings, little has been done concerning emissions arising from the construction process itself. This paper specifically examines emissions arising from cut and fill excavation on residential construction sites. Even though such excavation is often seen as being economical in terms of providing a flat base for concrete raft slab construction, the environmental consequences of this approach need to be considered more fully in terms of impact on the environment. This is particularly important when steeply sloping sites are involved and for different soil types. The paper undertakes a study that quantitatively assesses the cumulative greenhouse gas emissions caused by cut and fill excavation on 52 residential projects in Australia for a range of slope and soil types. The paper presents results from the study and concludes that greenhouse gas emissions increase as site slope increases; the building footprint area (as distinct from Gross Floor Area), exposes the need to reduce the area of the building to reduce greenhouse gas emissions; excavation of rock soils creates higher emissions than other soil types; and cut and fill excavation on steeply slope sites increase emissions. Potential alternative construction includes suspended floor construction systems which involve less excavation. 


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References

Ahn, C., Lee, S., Peña-Mora, F. & Abourizk, S. 2010, 'Toward environmentally sustainable construction processes: The US and Canada’s perspective on energy consumption and GHG/CAP emissions', Sustainability, vol. 2, no. 1, pp. 354-70.

Bilec, M.M., Ries, R.J. & Matthews, H.S. 2009, 'Life-cycle assessment modeling of construction processes for buildings', Journal of infrastructure systems, vol. 16, no. 3, pp. 199-205.

Chen, T., Burnett, J. & Chau, C. 2001, 'Analysis of embodied energy use in the residential building of Hong Kong', Energy, vol. 26, no. 4, pp. 323-40.

Cole, R.J. 1998, 'Energy and greenhouse gas emissions associated with the construction of alternative structural systems', Building and Environment, vol. 34, no. 3, pp. 335-48.

Department of Climate Change and Energy Efficiency 2010, National greenhouse accounts (NGA) factors, Canberra.

Department of the Environment and Heritage 2006a, ESD design guide for Australian government buildings 2nd edition, Department of the Environment and Heritage, Australian Greenhouse Office, Canberra.

Department of the Environment and Heritage 2006b, AGO factors and methods workbook, Department of the Environment and Heritage, Canberra.

Dimoudi, A. & Tompa, C. 2008, 'Energy and environmental indicators related to construction of office buildings', Resources, Conservation and Recycling, vol. 53, no. 1, pp. 86-95.

Gerilla, G.P., Teknomo, K. & Hokao, K. 2007, 'An environmental assessment of wood and steel reinforced concrete housing construction', Building and Environment, vol. 42, no. 7, pp. 2778-84.

Goggins, J., Keane, T. & Kelly, A. 2010, 'The assessment of embodied energy in typical reinforced concrete building structures in Ireland', Energy and Buildings, vol. 42, no. 5, pp. 735-44.

Guggemos, A.A. & Horvath, A. 2005, 'Decision support tool for environmental analysis of commercial building structures', Construction Research Congress 2005: Broadening Perspectives, pp. 92-7.

Gustavsson, L. & Sathre, R. 2006, 'Variability in energy and carbon dioxide balances of wood and concrete building materials', Building and Environment, vol. 41, no. 7, pp. 940-51.

International Standards Organisation 2006, ISO 14040: Environmental management - Life cycle assessment - Principles and framework, International Standards Organization, Geneva.

International Standards Organization 2006, ISO 14044: Environmental management - Life cycle assessment - Requirements and guidelines, International Standards Organization, Geneva.

IPCC, I.P.o.C.C. 1995, Climate change 1995 Second Assessment Report - A report of the Intergovernmental Panel on Climate Change, Cambridge.

Klöpffer, W. 2006, 'The role of SETAC in the development of LCA', The International Journal of Life Cycle Assessment, vol. 11, no. 1, pp. 116-22.

Kohler, N. & Moffatt, S. 2003, 'Life-cycle analysis of the built environment', Industry and environment, vol. 26, no. 2-3, pp. 17-21.

Li, X., Zhu, Y. & Zhang, Z. 2010, 'An LCA-based environmental impact assessment model for construction processes', Building and Environment, vol. 45, no. 3, pp. 766-75.

Mao, C., Shen, Q., Shen, L. & Tang, L. 2013, 'Comparative study of greenhouse gas emissions between off-site prefabrication and conventional construction methods: Two case studies of residential projects', Energy and Buildings, vol. 66, pp. 165- 76.

Monahan, J. & Powell, J. 2011, 'An embodied carbon and energy analysis of modern methods of construction in housing: a case study using a lifecycle assessment framework', Energy and Buildings, vol. 43, no. 1, pp. 179-88.

SAI-Global 2011, AS2870 -2011 Residential slabs and footings, SAI Global, Sydney. Su, X. & Zhang, X. 2010, 'Environmental performance optimization of window–wall ratio for different window type in hot summer and cold winter zone in China based on

life cycle assessment', Energy and buildings, vol. 42, no. 2, pp. 198-202.

Yan, H., Shen, Q., Fan, L.C., Wang, Y. & Zhang, L. 2010, 'Greenhouse gas emissions in building construction: A case study of One Peking in Hong Kong', Building and

Environment, vol. 45, no. 4, pp. 949-55.

Zhang, X., Platten, A. & Shen, L. 2011, 'Green property development practice in China:

costs and barriers', Building and Environment, vol. 46, no. 11, pp. 2153-60.



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DOI: https://doi.org/10.5130/AJCEB.v14i4.4195

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