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Faculty of Engineering and Built Environment

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    Developing a framework towards effective quality control management practice on building construction projects in Nigeria : a case study of Lagos
    (2023-05) Oyewole, Margaret Damilola; Mewomo, MC
    Across the world, quality issues on construction projects have been challenging, especially in developing countries with increased demand for buildings due to emerging economies and growing populations. In Nigeria, especially Lagos, poor quality of work has led to the continuous collapse of buildings, with several lives claimed. The need to improve the quality performance of construction projects and curb the quality issues faced by construction industries in Lagos has called for effective quality control management practices. Therefore, this research aims to develop a framework for effective quality control management of building construction projects in Lagos, Nigeria, by investigating the current quality control practices, the challenges inhibiting effective quality control management, the influence of quality control managers as well as the critical success factors required for quality control management of building construction projects. The study employs a quantitative research method using a questionnaire as the research instrument. A total of one hundred and sixteen responses were obtained from construction professionals working in the construction industries within Lagos state, Nigeria. The professionals were randomly selected from each construction firm. The data collected were analysed through descriptive and exploratory factor analysis methods utilizing Statistical Package for the Social Sciences (SPSS) version 28. The findings revealed that the firms carry out quality control management practices but mostly adopt traditional quality control practices to control the quality of work being carried out. Also, the findings revealed that employing quality control managers will positively influence the quality control management of construction projects. They would ensure the implementation of quality plans and checklists, boost quality compliance, and increase the project's success. The study further identified quality control challenges and the success factors required for effective quality control management. Upon this, a graphical framework for effective quality control management was developed. The proposed framework in this study shall be helpful to construction stakeholders and organisations in efficiently controlling the quality of construction projects. The study, therefore, recommends applying digital quality control tools to building projects among construction professionals, as this will help put the industry ahead of others and reduce human error in production.
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    Effective risk management practice and project success : the case of a water utility’s construction projects
    (Southern African Institute for Industrial Engineering, 2022-10-03) Javani, Blessing; Mamena, H.G.; Dewa, Mendon
    Failure to complete projects can significantly put an organisation’s competitive advantage, its strategic position, and competitive survival in jeopardy. The study sought to establish the effectiveness of applying project risk management tools and techniques at Rand Water, a state-owned entity. A quantitative approach with a survey research strategy was used in this study and 63 of the total population of 69 responded to the questionnaire that was issued. The Rand Water case study findings suggest that, in order to reduce project failure, one of the tools being utilized in managing projects is effective project risk management. In addition, the findings indicate that executive management must continue to apply project risk management tools and techniques coupled with regular project team training.
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    Development of a project delivery model for Umgeni Water : infrastructure projects
    (2019-05-05) Naidoo, Ashok Deenadayalan; Aiyetan, Olatunji Ayodeji
    Project delivery challenges encountered within the built-environment is a global phenomenon. Factors causing project delivery challenges in construction projects differ between countries, due to various fundamental reasons. The fundamental reasons that could exert an influence on project delivery challenges could extend into numerous causes relating to; the client, project planning, risk management, cost estimating, communication, quality and project management approach. The construction industry is a key component to the economy, however many construction infrastructure projects are hindered because of project delivery challenges and fail to be delivered successfully. This study aims at identifying lack of performance and its effects on project delivery for construction infrastructure projects and to develop a project delivery model to mitigate or minimise these challenges for Umgeni Water. A typical Likert Scale using a five-point gauge statistical tool was used for the data analysis. The sample population derives from Umgeni Water employees involved in the planning and implementation of construction infrastructure projects. The sample group consists of qualified and experienced professionals that are project managers, civil engineers, planning engineers, quantity surveyors, servitude administrators and environmental project managers. Findings that were identified as major project delivery challenges at Umgeni Water include the following; • Insufficient planning and designing done during the project, communication problems within the project; • Inadequate attributes and capabilitii;is endorsed by the project manager that hinder the implementation of a good project management approach; • Inadequate participation and contribution by the client during the project; • Project risks that are poorly identified assessed, mitigated and controlled during the project; • Unsatisfactory cost estimating resulting in errors and oversights, and • Oversight of critical quality factors during the project. Recommendations include: (1) the project team must ensure that ample effort is applied at the beginning of the project, sufficient time must be allocated to successfully complete the planning and designing process and consultants must be selected on their experience rather than low bidding; (2) the following courses / modules are recommended for inclusion in built environment tertiary education programmes for all disciplines. They are: design management, quality management, cost management, operational management, resource management and project management; and (3) the model developed should be adopted for use at Umgeni Water for the delivery of projects to minimise project delivery challenges.
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    Using system dynamics principles for conceptual modelling to resolve causes of rework in construction projects
    (University of Johannesburg Department of Construction and Quantity Surveying, 2015) Aiyetan, Olatunji Ayodeji; Das, Dillip
    Rework in construction projects has brought in two major challenges: cost overruns and delay. In this regards a study was conducted by considering various construction projects in the South West part of Nigeria to understand the causes of rework and the interventions to mitigate it. Survey research methodologies followed by the conceptual system dynamics (SD) modelling were used in the analysis. This study identified the sources of rework in construction projects from the design related, the client related and the contractor related issues and attempted to derive policy/strategic interventions to limit or eliminate rework on construction projects and its delivery by using conceptual SD models based on the influence of the variables on rework. The findings include that inappropriate scheduling for time pressure or delay at the planning stage, lack of adherence to specifications, and non-availability of skilled human resource are the major causes of rework. However, rework in construction projects would be reduced or eliminated through policy interventions, such as, achieving client satisfaction with scheduling for time pressure or delay at the planning stage, adherence to specifications ensuring quality of work resulting in client satisfaction, and the availability of skilled manpower ensuring quality management.