A category and index hybrid (CIH) approach to measuring the level of prefabrication

Journal article


Lu, W., Ghansah, F. and Xu, J. (2022). A category and index hybrid (CIH) approach to measuring the level of prefabrication. International Journal of Construction Management. 23 (15), pp. 2658-2669. https://doi.org/10.1080/15623599.2022.2084599
AuthorsLu, W., Ghansah, F. and Xu, J.
Abstract

Two generic approaches exist to measuring the level of prefabrication (LoP) in construction. One is the ‘category’ approach to indicating which prefabrication type a building adopts. Another is the ‘index’ approach to measuring the ratio of prefabrication in the total construction volume. However, existing studies still face difficulty in understanding the true picture of prefabrication in a building project by adopting either category or index approach. To address this issue, this study aims to develop a ‘category and index hybrid’ (CIH) approach to measuring the LoP holistically. Firstly, a tentative CIH model was developed. Then, the model was used to measure 15 sizeable high-rise building projects in Hong Kong, which have adopted different prefabrication components. Finally, the approach was presented to industrial stakeholders for validation via interviews on its strengths, weaknesses, and prospective applications. A strong positive correlation was revealed between Levels 0 and 1 prefabrication usage based on Pearson correlation, r. It also found that the CIH approach’s ‘category’ component allows people to quickly grasp a building’s prefabrication types, while its ‘index’ component allows a numerical understanding of prefabrication in the entire construction. The interview results denoted that the CIH approach can enable a series of meaningful applications.

KeywordsCategory and index hybrid approach, level of prefabrication measurement, prefabrication forms
Year2022
JournalInternational Journal of Construction Management
Journal citation23 (15), pp. 2658-2669
PublisherTaylor & Francis
ISSN2331-2327
Digital Object Identifier (DOI)https://doi.org/10.1080/15623599.2022.2084599
Publication dates
Print10 Jun 2022
Publication process dates
Deposited21 Feb 2024
Accepted author manuscript
License
File Access Level
Open
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