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Journal ArticleDOI

Significant Factors Causing Time and Cost Overruns in Construction Projects in the Gaza Strip: Contractors’ Perspective

TL;DR: In this article, the authors identify factors influencing time and cost overruns in construction projects in the Gaza Strip, and present a detailed questionnaire containing 110 factors that caused time delay and 42 factors which caused cost overrun.
Abstract: The construction industry is considered one of the most important industries in Palestine. However, most construction projects in the Gaza Strip have been exposed to time and cost overruns. The aim of this paper is to identify factors influencing time and cost overruns in construction projects in the Gaza Strip. A detailed questionnaire containing 110 factors that caused time delay and 42 factors that caused cost overruns was developed as a basis to invite inputs from contractors. 80 questionnaires were distributed to contractors and 66 were completed and returned representing an 83% response rate. The view of contractors has been analyzed to rank the causes of delay and cost overruns on an importance index. The most significant causes of time delay identified in this research are; strikes, border closures, lack of materials in markets, shortage of construction materials at site, delay of material delivery to site, cash-flow problems during construction, and poor site management. The most signific...
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors present a systematic review of studies on CPD published between 1985 and 2018, before identifying common CPD, research trends were examined in terms of the number of publications in selected journals, as well as the contributions made by countries, institutions and researchers.
Abstract: The purpose of this paper is to present a systematic review of studies on CPD published between 1985 and 2018.,Before identifying common CPD, research trends were examined in terms of the number of publications in selected journals, as well as the contributions made by countries, institutions and researchers.,The findings reveal that researchers from developing countries have contributed the most to identifying the causes of CPD. A total of 149 causes of CPD were identified in a thorough review of 97 selected studies. Weather/climate conditions, poor communication, lack of coordination and conflicts between stakeholders, ineffective or improper planning, material shortages, financial problems, payment delays, equipment/plant shortage, lack of experience/qualification/competence among project stakeholders, labour shortages and poor site management were identified as the ten most common CPDs.,Being the first study of its type, this study provides insight into the research output related to this area and identifies a common set of CPDs, which may provide a better understanding of the key areas requiring attention where steps should be taken to minimise or control factors causing delays in construction projects.

81 citations

Journal ArticleDOI
TL;DR: The problems facing the construction industry have hindered the progress and the development of this vital sector, particularly in developing countries as discussed by the authors, and to investigate the salient issues, two authors in their paper, 2
Abstract: The problems facing the construction industry have hindered the progress and the development of this vital sector, particularly in developing countries. To investigate the salient issues, 2...

63 citations

Journal ArticleDOI
TL;DR: In this article, the methodological weaknesses in the dominant approaches adopted to evaluate infrastructure cost overruns are identified and the authors propose an alternative approach to the problem of infrastructure cost over-estimation.
Abstract: Infrastructure cost overruns receive a significant amount of attention in the academic literature as well as the popular press. The methodological weaknesses in the dominant approaches adopted to e...

58 citations


Additional excerpts

  • ...(1997); Ameh et al. (2010); Enshassi, Kumaraswamy, and Al-Najjar (2010); Memon et al. (2012); and Durdyev et al. (2012)....

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Journal ArticleDOI
TL;DR: In this paper, the main characteristics of the construction industry compared to the manufacturing industry according to three levels: on-site production, one of a kind projects, and complexity were determined.
Abstract: The growing context of globalization permanently increases pressure on the construction companies to improve their performances in order to resist to the constraints of competitiveness in the international market. It has become ineluctable to look for introducing a new alternative capable of bringing creative improvement to the traditional production system. This paper will relate mainly to the most relevant management techniques in the construction industry, and more specifically, the lean construction concept. Initially, we will determine the main characteristics of the construction industry compared to the manufacturing industry according to three levels: on-site production, one of a kind projects, and complexity. Subsequently, we will focus our attention on the main sources of waste in the construction industry. Finally, a rigorous comparative study will be carried out to show the contribution of the lean construction tools in the promotion of traditional construction especially at the level of the following factors: Creating value and eliminating waste; Planning and mutual coordination; Site organization. Lean construction as Last Planner System (LPS), Value Stream Mapping (VSM), Just-in-Time philosophy, Visual management (VM) and 5S have shown a great ability to improve the traditional production system through waste reduction, encouraging people involvement, ensuring a pull flow production, and promotion of a continuous improvement philosophy.

55 citations

Journal ArticleDOI
TL;DR: A systematic critical review including a bibliography analysis on delay literature in construction is conducted, including what has been learnt from a decade investigating delay causes and effects in the construction literature and what factors have been missed in the literature.
Abstract: Delay is one of the main challenges of construction projects, and there is still much to overcome in order to reach near zero delay in all construction projects. This project aims to conduct a systematic critical review including a bibliography analysis on delay literature in construction. The main questions consider what has been learnt from a decade investigating delay causes and effects in the construction literature and what factors have been missed in the literature. This paper also presents a new and challenging question regarding how digital tools and associated technologies may prevent any delay in construction projects, which can change the research direction from delay investigations to identifying prevention factors. The paper identifies the delay dataset, including 493 papers investigating delay in construction, and establishes a specific dataset of papers focusing on delay effects and causes (DEC), including 94 selected papers covering different factors examined in over 29 countries such as Iran, India, Turkey, Bangladesh, Saudi Arabia, the United Arab Emirates (UAE), Cambodia, Oman, Malaysia, Taiwan, China, Vietnam, the US, the UK, and Egypt. In addition, the paper identifies 30 critical factors with the frequency of occurrences over three times in the DEC dataset and computes their medians of ranking. This paper also discusses digital tools and methods that can be used for delay analysis and preventions, including MS Project, Oracle Primavera P6, and Open Plan by Deltek. The paper discusses the project schedule delay analysis from project management methodology perspectives. It also discusses the current method’s limitations and future directions, which are based on the identification of the deficiency areas. In total, four overlooked factors are identified and suggested, including faulty data analysis, unmatched structure of the research questionnaires with new knowledge and standards [e.g., Project Management Body of Knowledge (PMBOK)], overlooked effects of digital technologies [e.g., Digital twin, Navisworks, Building Information Model (BIM), Geographic Information System (GIS), and Integrated Project Delivery (IPD)], and ignored job-site technologies. In addition, the paper presents the DEC model for future studies, including four main key factors. These factors are resources (e.g., project budgets, labour, material, equipment, and digital tool), project context, stakeholders performance (e.g., owner/client, consultant/designer, contractor, vendor/supplier), and external factors (e.g., ground condition, site location, regulation, natural disaster), which may significantly affect delay prevention and should be concurrently considered in the future delay investigations, since they may be required for designing an effective mitigation strategy when these proof points are identified. This would significantly help to utilise digital systems to prevent time overruns in different construction contexts.

52 citations

References
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Journal ArticleDOI
TL;DR: In this article, a survey on time performance of different types of construction projects in Saudi Arabia was conducted to determine the causes of delay and their importance according to each of the project participants, i.e., the owner, consultant and the contractor.

1,533 citations

Book
15 Jan 2001
TL;DR: Essentials of nursing research, Essentials of Nursing research , کتابخانه دیجیتال جندی شاپور اهواز
Abstract: Essentials of nursing research , Essentials of nursing research , کتابخانه دیجیتال جندی شاپور اهواز

1,332 citations

Journal ArticleDOI
TL;DR: In this article, the authors identified 10 most important causes of delay from a list of 28 different causes and 6 different effects of delay, and established an empirical relationship between each cause and effect.

1,277 citations


"Significant Factors Causing Time an..." refers result in this paper

  • ...This result coincides with the findings of Ogunlana et al. (1996), Abudul-Rahman et al. (2006), Sambasivan and Soon (2007), and Alaghbari et al. (2007), in that the lack of materials is one of the important causes of delay....

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  • ...The research results of Ogunlana et al. (1996), Abudul-Rahman et al. (2006), Sambasivan and Soon (2007), and Alaghbari et al. (2007) concur with this result, that the shortage of construction materials at site is a very important cause of delay....

    [...]

Journal ArticleDOI
TL;DR: In this article, the authors present the results of a questionnaire survey conducted to identify and evaluate the relative importance of the significant factors contributing to delay and cost overruns in Ghana groundwater construction projects.

780 citations


"Significant Factors Causing Time an..." refers background in this paper

  • ...Frimpongs et al. (2003) studied 26 factors that cause cost overruns in construction of ground water projects in Ghana....

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Journal ArticleDOI
TL;DR: In this paper, the authors present the findings of a survey aimed at identifying the most important causes of delays in construction projects with traditional type contracts from the viewpoint of construction contractors and consultants.

757 citations