IJIMT 2017 Vol.8(6): 460-465 ISSN: 2010-0248
doi: 10.18178/ijimt.2017.8.6.771

Causes and Effects of Rework: A Study on a Major Water Supply Pipe-Line Construction Project in Libya

Abdel Rahim Al Zanati and Arun Bajracharya
Abstract— This study attempts to investigate the causes of rework and how rework affect the cost performance of project. An ongoing major water pipe-line project in Libya was considered for the study. Data were collected mainly from three sources: first, a set of 50 samples of non-conformance report (NCR); second, financial information pertaining to the sample NCRs; and third, semi-structured interviews with key staff at the project site. Interview data were analysed using the theoretical coding approach to determine the causes of rework. Analysis of the collected financial data helped in realising the cost impact of rework. The findings revealed five categories of causes of rework: the people, process, technology/machines/equipment, materials, and communication, among which people and process related causes were dominant. The cost effect of the rework on different work packages in the project ranged from 2.78% to 7.70% resulting into 4.08% increase in the planned cost of the project in average.

Index Terms— Rework, causes of rework, cost effects of rework, water supply pipe-line project, Libya.

AbdelRahim Al Zanati is with Bournemouth University, Faculty of Science and Technology, Fern Barrow, Dorset BH12 5BB, UK (email: i7619793@bournemouth.ac.uk). Arun Bajracharya is with the School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University Malaysia, No. 1, Jalan Venna P5/2, Precinct 5, 62200 Putrajaya, Malaysia (e-mail: a.bajracharya@hw.ac.uk).

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Cite: Abdel Rahim Al Zanati and Arun Bajracharya, " Causes and Effects of Rework: A Study on a Major Water Supply Pipe-Line Construction Project in Libya," International Journal of Innovation, Management and Technology vol. 8, no. 6, pp. 460-465, 2017.

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