Zakari Mustapha
University of Johannesburg
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Featured researches published by Zakari Mustapha.
Archive | 2015
Zakari Mustapha; Clinton Aigbavboa; Wellington Didi Thwala
The purpose of the paper is to presents a review of literature on safety hazard identification and possible preventive measures in the construction industry. Unidentified hazards in the construction industry are likely to present the most unavoidable risks. Therefore, hazard identification is paramount to construction safety management since risk assessment is the practical means by which hazardous events are managed. Safety hazard identification in the construction industry towards the improvement of employee’s health and safety (H&S). Unidentified hazards in the construction industry are likely to present the most unavoidable risks. Therefore, hazard identification is paramount to construction safety management since risk assessment is the practical means by which hazardous events are managed. The study is mainly literature review with reference to existing theoretical literature, published and unpublished research. The paper presents an overview of hazards and accident causation. The findings from the study have shown that falls at construction sites are the leading cause of death and most of these deaths were attributed to falls from roofs, scaffolds, and ladders. Construction accidents lead to delay in project completion, increase the expenses and ruin the reputation and reliability of constructors. The following were identified as some of the barriers to H&S improvement: lack of information sharing across projects, full-time safety department, subjective nature of hazard identification and risk assessment. The study explores safety hazard identification in the construction industry towards the improvement of employee’s H&S. The study presents a strong background on hazard identification in the construction safety management.
Archive | 2018
Zakari Mustapha; Clinton Aigbavboa; Wellington Didi Thwala
Most of the major incidents and personal injuries on construction sites have been attributed to poor safety culture. The purpose of the study was to examine the contractors’ organisational culture towards Health and Safety (H&S) compliance in Ghana. The study adopted Delphi survey method of data collection. Expert (academics and professionals) were asked to rate the impact of other factors in predicting contractors’ contribution that will lead to the overall compliance with H&S regulations. Findings from the study show eleven measurement variables, only one measurement variable (communication of H&S information to workers)was considered by the experts to have reached consensus with IQD cut-off (IQD ≤ 1) score. Four measurement attributes also reached consensus based on the median score of (9–10) and seven other measurement attributes reached consensus based on the median score of (7–8.99). Five out of the eleven variables were ranked by the experts as the most pressing issues on H&S compliance. It can be concluded from the findings that contractors’ organisational culture towards H&S compliance has a high impact to the overall H&S regulations in Ghana.
International Conference on Applied Human Factors and Ergonomics | 2018
Wellington Didi Thwala; Zakari Mustapha; Clinton Aigbavboa
Small and medium-sized (SME) contractors’ form the bulk of contractors in the in Ghanaian construction industry. SME’s contractors’ health and safety issues have been a major problem to the construction industry. The laid down rules for health and safety (HS with two factors having five variables and five factors have four variables each respectively. One factor has three variables.
International Conference on Applied Human Factors and Ergonomics | 2018
Wellington Didi Thwala; Zakari Mustapha; Clinton Aigbavboa
Small and medium sized enterprise (SME) contractors form the bedrock of economic growth in all countries. This study presents a framework for the selection of projects towards the growth of SME contractors in the Cape Coast Metropolis of Ghana. Sixty questionnaires were administered among the SME contractors and forty-seven questionnaires were returned, representing 78.3%. Findings from the study showed that project selection should be done in careful manner for SME’s, resources should not be tied up in less significant activities and the SME management should take decisions that are feasible for the growth and expansion of the company. It was concluded that the development of the final framework work will serve as a guide in predicting the growth of SME contractors in within the study area.
International Conference on Applied Human Factors and Ergonomics | 2018
Wellington Didi Thwala; Zakari Mustapha; Clinton Aigbavboa
Human factor has been identified as the most prevailing and contributing factor to high rate of accidents in the construction industry. Inappropriate operation and misappropriate use of equipment among employees have also been identified as the major roots causes. The paper identifies acts that lead to accident among contractors’ on construction sites in Cape Coast Metropolis. Data were collected through administrating of questionnaires, and analysed using descriptive statistics and ranking. Findings show that 85% of the respondents had the required knowledge and skills to prevent accidents on construction and likewise towards unsafe acts practices on site. Further findings show that the most outstanding acts that lead to accidents among contractors within the metropolis are: working without presence of a supervisor/authority on the job, with a standard deviation of 1.053, followed by working under the influence of alcohol and other substances, with standard deviation of 0.900 and smoking, creating naked flame or sparks in areas where flammable materials are stored, with a standard deviation of 0.894. The least among the ranking of the acts that lead to accidents are leaving nails or other sharp objects from timber, with a standard deviation of 0.503 and unsafe acts is the most significant factor in the cause of site accident, with a standard deviation of 0.587. The outcome of the research findings will assist safety personnel in the application of appropriate mitigation measures that will minimize unsafe acts of employees within a working environment.
International Conference on Applied Human Factors and Ergonomics | 2017
Zakari Mustapha; Clinton Aigbavboa; Wellington Thwala
Occupational Health and Safety (OHS) issues has been a major challenge to the Ghanaian government. The purpose of the study was to examine OHS practices in Ghana. The study looked at various views from different scholars about OHS practices in order to achieve the objective of the study. Literature review was conducted on OHS in Ghana. Findings from the study shows Ministry of Roads and Transport (MRT) and Ministry of Water Resources, Works and Housing (MWRWH) are two government ministries in charge of construction and implementation of the construction sector policy. The Factories, Offices and Shops Act 1970, Act 328 and the Mining Regulations 1970 LI 665 are the two major edicts. The study presents a strong background on OHS practices in Ghana and contribute to the body of knowledge on the solution to the current trends and challenges of OHS in the construction sector.
International Conference on Applied Human Factors and Ergonomics | 2017
Zakari Mustapha; Clinton Aigbavboa; Wellington Thwala
Majority of the incidents and accidents in complex high-risk systems that exist in the construction industry and other sectors have been attributed to unsafe acts of workers. The purpose of this paper is to asses Human Factors Analysis and Classification System (HFACS) in construction accident prevention. The study was conducted through the use of secondary data from journals, books and internet to achieve the objective of the study. The review of literature looked into details of different views from different scholars about HFACS framework in accidents investigations. It further highlighted on various sections or disciplines of accident occurrences in human performance within the construction. The findings from literature review showed that unsafe acts of a worker and unsafe working conditions are the two major causes of accident in the construction industry. The most significant factor in the cause of site accident in the construction industry is unsafe acts of a worker. The findings also show how the application of HFACS framework in the investigation of accident will lead to the identification of common trends. Further findings show that provision for the prevention of accident will be made based on past accident records to identify and prioritize where intervention is needed within the construction industry.
Archive | 2016
Zakari Mustapha; Clinton Aigbavboa; Wellington Thwala
The Ghanaian construction industry has been domination by Small and Medium Sized-Enterprises (SMEs) contractors and this domination has been attributed to the rate of urbanization in the country. Whilst, poor Occupational Health and Safety (OHS) practices by these contracts have resulted in a high rate of occupational accidents. Non-compliance with Health and Safety (H&S) regulations among SMEs contractors’ has led to their inability to manage Occupational Health and Safety (OHS). The purpose of the study was to identify the causes of SMEs contractors’ non-compliance with H&S regulations. An extant review of literature was conducted, that provided the road map to source out information relevant to SMEs contractors’ Health and Safety (H&S) practices in Ghana. The study adopted the Delphi survey method of data collection to investigate the study objective. List of experts (construction professionals and academics) were generated from peered reviewed conference proceedings and journal articles. A structured Delphi technique questionnaires were administered amongst the selected construction experts who consented to participate in the study. The rating of the SMEs non-compliance with H&S regulations were based on either the impact was considered to be high or very high. Data collected were analysed using Microsoft EXCEL, spread-sheet software. The findings reveal that limited knowledge of OHS, unavailabilty of H&S policy and knowledge on H&S policy implementation have high impact on SMEs contractors’ non-compliance with H&S regulations. Other findings were that the SME contractors provided limited training to their employees on H&S regulations and management bottleneck. The study contribute to the body of knowledge on the causes of SMEs contractors’ non-compliance with H&S regulations in the Ghanaian construction industry.
International Journal of Architecture, Engineering and Construction | 2016
Zakari Mustapha; Clinton Aigbavboa; Wellington Didi Thwala
This study aims to carry out a confirmatory factor analysis on government support features among small and medium-sized enterprises (SMEs) contractors in Ghana. Data were obtained from 558 SMEs contractors in Ghana through a structural questionnaire survey. Data collected were analyzed using structural equation modelling (SEM). The results obtained were used to confirm the factorial structure of the constructs. The SEM analysis confirmed that the Rio coefficient and the Cronbach’s alpha coefficient on the internal consistency were over 0.70 criteria for acceptability. The influence of government support features on the health and safety (H&S) compliance was found to be statistically significant, hence strong in predicting H&S compliance among SMEs contractors. This paper makes a significant contribution to supporting government features among SMEs contractors, and more importantly, provides a significant insight into how H&S compliance among SMEs contractors could be improved.
Archive | 2017
Zakari Mustapha; Clinton Aigbavboa; Wellington Thwala