Multi-Criteria Analysis of a Developed Prefabricated Footing System on Reactive Soil Foundation
1
Institute of Sustainable Industries and Liveable Cities, Victoria University, Melbourne 3011, Australia
2
Cardno, Melbourne 3000, Australia
3
Department of Infrastructure Engineering, The University of Melbourne, Parkville 3010, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Umberto Desideri
Energies 2021, 14(22), 7515; https://doi.org/10.3390/en14227515
Received: 24 September 2021
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Revised: 4 November 2021
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Accepted: 8 November 2021
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Published: 10 November 2021
(This article belongs to the Special Issue Life Cycle Assessment (LCA) in Building Construction: Focus on Embodied Carbon and Energy)
The need for advancements in residential construction and the hazard induced by the shrink–swell reactive soil movement prompted the development of the prefabricated footing system of this study, which was assessed and compared to a conventional waffle raft using a multi-criteria analysis. The assessment evaluates the structural performance, cost efficiency, and sustainability using finite element modelling, life cycle cost analysis, and life cycle assessment, respectively. The structural performance of the developed prefabricated system was found to have reduced the deformation and cracking by approximately 40%. However, the cost, GHG emission, and embodied energy were higher in the prefabricated footing system due to the greater required amount of concrete and steel than that of the waffle raft. The cost difference between the two systems can be reduced to as low as 6% when prefabricated systems were installed in a highly reactive sites with large floor areas. The life cycle assessment further observed that the prefabricated footing systems consume up to 21% more energy and up to 18% more GHG emissions. These can significantly be compensated by reusing the developed prefabricated footing system, decreasing the GHG emission and energy consumption by 75–77% and 55–59% with respect to that of the waffle raft.
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Keywords:
prefabricated footing system; reactive soil foundation; finite element model (FEM); life cycle assessment (LCA); green house gases (GHG); life cycle cost (LCC)
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MDPI and ACS Style
Teodosio, B.; Bonacci, F.; Seo, S.; Baduge, K.S.K.; Mendis, P. Multi-Criteria Analysis of a Developed Prefabricated Footing System on Reactive Soil Foundation. Energies 2021, 14, 7515. https://doi.org/10.3390/en14227515
AMA Style
Teodosio B, Bonacci F, Seo S, Baduge KSK, Mendis P. Multi-Criteria Analysis of a Developed Prefabricated Footing System on Reactive Soil Foundation. Energies. 2021; 14(22):7515. https://doi.org/10.3390/en14227515
Chicago/Turabian StyleTeodosio, Bertrand, Francesco Bonacci, Seongwon Seo, Kasun Shanaka Kristombu Baduge, and Priyan Mendis. 2021. "Multi-Criteria Analysis of a Developed Prefabricated Footing System on Reactive Soil Foundation" Energies 14, no. 22: 7515. https://doi.org/10.3390/en14227515
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