An empirical study on non-physical waste factors in the construction industry
Engineering, Construction and Architectural Management
ISSN: 0969-9988
Article publication date: 13 September 2021
Issue publication date: 7 December 2022
Abstract
Purpose
This study highlights the findings of an empirical study to investigate waste factors (WFs) affecting the performance and delivery of construction projects in developing countries. The objectives of this study are to identify non-physical WFs in developing nations and rank the identified factors based on their degree of influence on the key performance indicators (KPIs) of cost, quality and time.
Design/methodology/approach
In total, 34 WFs were identified through a detailed literature review and consolidated using semi-structured interviews with construction practitioners. The statistical analysis involved a normality test using the Shapiro–Wilk test to determine if sample data have been drawn from a normally distributed population, ranking the WFs using the Frequency Index (FI), Severity Index (SI) and Importance Index (IMPI), ranking the WFs based on their effect on the project KPIs of cost, quality and time, and identify clustering structures for the identified WFs to using factor analysis (FA).
Findings
The results revealed ineffective planning and scheduling, rework/repair of defective work and resource quality problems (human, material and equipment) as the three most important WFs affecting construction projects. The factor analyses showed that WFs can be grouped into five interrelated components, suggesting the need for integrated and holistic strategies to overcome the identified WF.
Practical implications
Understanding the effects of WFs on construction projects is a first step towards designing holistic solutions to ensuring projects deliver value to the clients and other stakeholders. The findings of this study provide direction to construction practitioners on where to focus appropriate strategies to manage the identified WFs effectively and, therefore, improve the productivity of construction projects.
Originality/value
This study provides the first holistic analysis of WFs affecting the productivity of construction projects in developing countries.
Keywords
Acknowledgements
The survey participants are much appreciated for their time and contribution. The authors also wish to thank the reviewers for their time and constructive feedback.
Funding: This research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors.
Data availability statement: All data used that support the findings of this study are available from the corresponding author upon reasonable request.
Citation
Igwe, C., Nasiri, F. and Hammad, A. (2022), "An empirical study on non-physical waste factors in the construction industry", Engineering, Construction and Architectural Management, Vol. 29 No. 10, pp. 4088-4106. https://doi.org/10.1108/ECAM-02-2021-0145
Publisher
:Emerald Publishing Limited
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