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Carbon Analysis, Life Cycle Assessment, and Prefabrication: A Case Study of a High-Rise Residential Built-to-Rent Development in the UK

Author

Listed:
  • Dilek Arslan

    (School of Architecture, University of Liverpool, Liverpool L69 7ZN, UK)

  • Steve Sharples

    (School of Architecture, University of Liverpool, Liverpool L69 7ZN, UK)

  • Haniyeh Mohammadpourkarbasi

    (School of Architecture, University of Liverpool, Liverpool L69 7ZN, UK)

  • Raheela Khan-Fitzgerald

    (Hawkins\Brown LLP, London EC1V 4QJ, UK)

Abstract

Recent research relating to energy use and carbon emissions by buildings has started to move from operational energy carbon impacts to the embodied energy/carbon impacts of buildings, and the methods and approaches used in architectural design to reduce embodied carbon have become more prominent. From a practitioner’s perspective, working with an ‘in-house’ Life Cycle Assessment (LCA) tool has become a growing trend for architects, and one perceived way of improving the LCA outcomes of a proposed building is to consider prefabrication of the construction process. Initiatives such as the Low Energy Transformation Initiative (LETI) and government bodies such as Greater London Authorities (GLA) provide guidance on LCA and upfront carbon emission targets for transitioning to net zero by 2050. The aim of this study was to establish (i) the LCA impacts from prefabricated residential buildings against current benchmarks; (ii) boundaries and opportunities in architectural practice in the UK when conducting an LCA; (iii) the effectiveness of an in-house LCA tool. This study shows that, although the life-cycle emissions of this prefabricated building achieved a low band in the LETI labelling system, with 1076 kgCO 2e /m², it still performs better than the business-as-usual model value of 1200 kgCO 2e /m². The results also reveal that the construction industry is not ready to provide realistic data on the prefabrication process to test its advantages compared to conventional constructional methods. However, having an in-house LCA tool provides a faster and more comprehensive LCA due to the commitment to carbon assessment in the office and saves time compared to manual calculations.

Suggested Citation

  • Dilek Arslan & Steve Sharples & Haniyeh Mohammadpourkarbasi & Raheela Khan-Fitzgerald, 2023. "Carbon Analysis, Life Cycle Assessment, and Prefabrication: A Case Study of a High-Rise Residential Built-to-Rent Development in the UK," Energies, MDPI, vol. 16(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:2:p:973-:d:1036603
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    References listed on IDEAS

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    1. John Quale & Matthew J. Eckelman & Kyle W. Williams & Greg Sloditskie & Julie B. Zimmerman, 2012. "Construction Matters: Comparing Environmental Impacts of Building Modular and Conventional Homes in the United States," Journal of Industrial Ecology, Yale University, vol. 16(2), pages 243-253, April.
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    Keywords

    prefabrication; LCA; LCA tools;
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