Browsing by Author "Asadi R"

Now showing 1 - 5 of 5
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    Investigating the relationship between reworks and contractual claims: The salience of contract conditions
    (American Society of Civil Engineers, 1/02/2022) Asadi R; Rotimi JOB; Wilkinson S
    Statistics show a high rate of contractual claims in construction projects, impacting the construction industry's progress negatively. Rework is one of the main underlying factors that generate contractual claims. Rework and contractual claims follow a mutual routine. Despite a large number of studies on the causes and impacts of rework on project performance, there has been limited research examining the relationship between claims and rework on the basis of contract documents. The paper first attempts to expose the sources of rework through a systematic literature review and then assesses rework causes that fail to be addressed in construction contract documents. The review results identified 37 root causes as the most common rework contributors to construction projects classified into five groups. The list of rework causes served as a starting point for searching the contractual issues through a questionnaire survey. Accordingly, a relative importance index was used for analysis of the primary data collected from the survey. The result first prioritized the importance level of rework causes in generating contractual claims, preceding rework causes that are not addressed adequately through standard form of contract conditions in construction projects. Findings of the investigations revealed that the general conditions of contract do not address the causes of rework adequately. Therefore, contract documents need improvement to cover contractual claims incidences due to rework. Lack of addressing rework causes in the general conditions of contract triggers recommendations for revising the contract clauses that ultimately lead to improved claim handling and dispute avoidances.
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    Mixed-Method Approach to Evaluate Rework Provisions within New Zealand Construction Contracts
    (2023-12-21) Asadi R; Wilkinson S; Rotimi JOB
    Rework in construction contracts is an interesting topic as it influences contractual claims and disputes. Changes in design, scope, and construction turn into rework and then affect project completion time, performance, and contract sum. Addressing the rework provision in a well-defined contract before the work commences will safeguard the project against unforeseen circumstances Contractual rework provisions are difficult to trace as they are often written indirectly or in a complex context. Therefore, a list of rework causes from the literature is used in this study to investigate rework clauses and identify the relevant provisions in the general contract conditions. Rework provisions in the New Zealand standard contract are reviewed first and the identified contract clauses are then evaluated based on the result of the questionnaire survey and professional interviews. The mixed method, both quantitative and qualitative approach, is utilized for data collection and analysis. This research revealed that only five significant causes of rework, involved in the categories of process, materials and equipment, are adequately addressed in the contract conditions, so the remaining causes of rework require further investigation. The result also identified five contract clauses related to rework provisions. The study suggests the contract parties review the rework provisions ahead of time during the negotiation of the contract. This approach enables the parties to manage their obligations under rework events by addressing other causes of rework. Properly addressing the causes of rework in the contract provisions reduces contractual claims, disputes, and improves the overall project performance.
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    Rework causes classification model with liable parties of the contract in construction projects
    (Frontiers Media, 2023) Asadi R; Rotimi JOB; Wilkinson S
    Rework is an interesting topic in the contract management of construction projects. An effective way of improving performance on construction projects is to manage rework. However, managing rework is challenging because of the dynamic nature of construction activities. A rational starting point is the identification of the root causes of rework then a framework for its management can be developed for improving construction performance. This paper reviews rework-related studies in the construction industry through a critical review of literature to investigate the main causes of rework in the construction contracts. A content analysis of the previously proposed classification methods for rework revealed that all rework causes could be grouped under various project stages. The causes of rework also could be ascribed to different project parties. However, previous studies have suggested various categories of rework, there is no commonly used classification model for rework causes in construction contracts. The current study proposes a model in three levels to address this gap. The developed model categorised rework causes in five constructs linked to three main stages of the project under two liable contract parties. The study findings show that the procurement stage has fewer categories of rework causes than design and construction. The result also reveals that the involvement level of contract parties in rework occurrence can be investigated in contract documents. Thus, this paper suggests further research in procurement stage to address rework causes in the contract conditions.
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    The common causes of rework in construction contracts: a diagnostic approach
    (Emerald, 2021) Asadi R; Wilkinson S; Rotimi JOB
    Purpose: The high rate of rework that occurs in construction projects has a negative effect on the performance of the construction projects. Although several mechanisms have been implemented to control reworking, a comprehensive list of rework causes is yet to be provided to present the common causes that contribute to rework in construction contracts. This paper aims to investigate the most common rework causes that need to be addressed in construction contracts. Design/methodology/approach: A mixed-method using both the qualitative and quantitative approach is used in this paper. First of all, the study adopted a four-step literature review to introduce the rework research trends and provide statistical reports using descriptive analysis. Next, a comprehensive review has been completed using content analysis to identify the common causes of rework in construction projects. Finally, the common causes in construction contracts are further investigated through a quantitative questionnaire survey to validate the initial results. Findings: The results of the review showed an increasing trend of publications on rework over the last three decades. Most of the studies were conducted in Australia, the UK, Nigeria and Hong Kong. Based on further investigation in the study area of sources of rework, 37 causes of rework causes were identified and classified in five groups. Then, the most significant causes of rework in construction contracts were compiled in the list of 22 items. Research limitations/implications: The paper’s reported result, contributes to the contract management body of knowledge by proposing a list of common rework causes that can be used by practitioners during the contract negotiation to prevent contractual issues. The result of the review can also be used for further investigation of the relationship between rework and contract conditions. Originality/value: The proposed list of common causes of rework in construction contracts allows project parties to improve the terms of the contract in addressing rework, this could result in fewer contractual claims and disputes. The findings of this study will also guide the investigations into the contract conditions, thus the approach used is constructive.
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    Towards contracting strategy usage for rework in construction projects: A comprehensive review
    (Taylor & Francis Online, 2021) Asadi R; Wilkinson S; Rotimi JOB
    Rework has been the core of attention for several years in the industry and academia as it affects the performance of projects. However, the trend of rework academic papers indicates an increasing rate in recent years; the overall research lacks a comprehensive review of the implemented theories and proposed models to explore further directions for rework management. Thus, to achieve a better understanding of rework it is necessary to perform an extensive review. This research aims to explore various insights from rework-related articles, discuss major research areas, and identify gaps for future studies looking closely at construction contracts. The selected articles are from three databases: “Scopus, Web of Science, Google Scholar”. The findings are categorized into six study areas: sources of rework, models and solutions, management and strategies, theories and techniques, rework impacts, and factors affecting rework. The analysis of the employed techniques across these topics showed that System Dynamic Modelling, Action Research, Analytic Hierarchy Process, and Regression have been used more frequently than other methods. The comprehensive review also shed light on the new ways of thinking, analyzing, and controlling the impacts of the rework. This paper proposes the assessment of rework causes in the conditions of contract which provides opportunities for improvement of the construction contracts.