The state of utilities and infrastructure within an academic institution plays a vital role in le... more The state of utilities and infrastructure within an academic institution plays a vital role in learning and the development of human capital. Hence, this study seeks to examine the management practices used in maintaining facilities in a government-owned tertiary institution and then examine the conditions of critical facilities and their related services in the institution. To achieve the study's goal, a questionnaire survey approach was used to collect information about users' and property managers' perceptions of maintenance management practices. The results revealed the existence of a maintenance policy covering critical systems and services. The discovery also implies that maintenance tasks are generated and planned in response to inspections and user requests. Respondents' perceptions of the state of facilities and utilities indicate that they are in good condition. While literature shows school infrastructure issues remain an ongoing concern, the majority of r...
International Journal of Building Pathology and Adaptation
PurposeThis study aimed at determining the decisive factors for achieving sustainable procurement... more PurposeThis study aimed at determining the decisive factors for achieving sustainable procurement in construction projects.Design/methodology/approachQuestionnaire survey of principal stakeholders involved in construction project delivery within client, consulting and contracting organisations in Nigeria were conducted to assess stakeholders' perspectives on the decisive factors for achieving sustainable procurement in construction projects using importance weights. A total of 243 questionnaires were distributed and a response rate of 51% (123 questionnaires were adequately filled and returned) was achieved. Descriptive and inferential statistics were utilised in analysing elicited data.FindingsThe results from data analysis showed that “satisfaction – including workforce satisfaction and user satisfaction”, “value for money” and “creating a healthy, nontoxic environment – including high indoor air quality” were the top most three decisive factors for achieving sustainable procu...
Festac Town Housing Estate (Phase 1) was conceived and executed in the 70's as a masterpiece ... more Festac Town Housing Estate (Phase 1) was conceived and executed in the 70's as a masterpiece in terms of providing mass housing, livable environment and complementary infrastructure facilities. This qualitative study uses purposive and stratified sampling. Research instruments of interview, and a questionnaire schedule was administered to a sample population of 210 Festac residents to investigate the condition of houses, condition and adequacy of estate physical infrastructure facilities, the residents' level of utility satisfaction with the social infrastructure, and affordability. The study, using descriptive analysis, and Chi-square Goodness of Fit test, shows that the condition of buildings and internal building amenities are generally good, except their water taps and laundry. Estate physical infrastructure facilities are in deplorable condition. The residents are satisfied with security, health centres and clinics, schools, police and fire services, post office, market...
Building maintenance management in institutions and organisations with sizeable building assets i... more Building maintenance management in institutions and organisations with sizeable building assets is a complex and multi-faceted process that involves planning, directing, controlling and organizing resources for the sustenance of the building’s physical, functional and operational performance. The purpose of this research work is to propose ways of optimizing maintenance expenditure of institutional buildings in Nigeria. Based on review of literatures, factors impacting maintenance costs were categorized into four categories comprising of; building characteristics, political factors, technical and administrative factors respectively. A questionnaire survey of maintenance departments’ staff of tertiary institutions in Lagos State was conducted and the data were analyzed using the statistical packages for social science (SPSS). The study reveals the predominant factors affecting maintenance costs of institution buildings to include; age, floor area and vertical spread of buildings, poo...
Built Environment Project and Asset Management, 2021
PurposeThe study investigates the extent to which defects in coastline buildings are influenced b... more PurposeThe study investigates the extent to which defects in coastline buildings are influenced by the climatic conditions within the coastal zones.Design/methodology/approachThe study conducted both desk study and field survey. The primary data for the study were collected through a cross-sectional survey of facilities and maintenance managers of randomly selected coastline buildings. Of the 120 self-administered structured questionnaires, 102 were successfully retrieved representing an 85% response rate. Data collected were analysed using charts, relative prevalence index and Spearman's rho correlation visualization technique.FindingsSaltwater intrusion, ocean overflow, extreme rainfall, debris flow, floods and droughts are the prevalent climatic conditions along the coastline. Steel corrosion, foundation settlement, spalling of concrete and fading of finishes are prevalent defects in coastline buildings. The result shows a positive significant correlation between climatic con...
Building collapses are becoming more common, resulting in the loss of lives, a waste of resources... more Building collapses are becoming more common, resulting in the loss of lives, a waste of resources, time, and money. When a building collapses, the shock has a societal, and often even international impact, and causes disgrace to the entire chain of stakeholders in the building industry. This study identified the contributions of internal stakeholders on building collapse as well as identify the factors that influenced building collapse in Lagos State. A survey of one hundred and fifty (150) construction stakeholders was conducted with ninety-two (92) questionnaires successfully retrieved and processed for analysis. Random sampling technique was used. Data collected were analyzed using the frequency table, mean score, and ANOVA (Analysis of Variance). The result reveals that there is significant difference in the contributions of internal stakeholders on building collapse in Lagos State. The study concludes that all internal stakeholders have a significant role to play on building co...
International Journal of Environmental Research and Public Health
The link between air pollution and health burden in urban areas has been well researched. This ha... more The link between air pollution and health burden in urban areas has been well researched. This has led to a plethora of effective policy-induced monitoring and interventions in the global south. However, the implication of pollutant species like PM2.5 in low middle income countries (LMIC) still remains a concern. By adopting a positivist philosophy and deductive reasoning, this research addresses the question, to what extent can we deliver effective interventions to improve air quality at a building structure located at a busy road node in a LMIC? This study assessed the temporal variability of pollutants around the university environment to provide a novel comparative evaluation of occupational shift patterns and the use of facemasks as risk control interventions. The findings indicate that the concentration of PM2.5, which can be as high as 300% compared to the WHO reference, was exacerbated by episodic events. With a notable decay period of approximately one-week, adequate protec...
Exposure of humans to high concentrations of PM2.5 has adverse effects on their health. Researche... more Exposure of humans to high concentrations of PM2.5 has adverse effects on their health. Researchers estimate that exposure to particulate matter from fossil fuel emissions accounted for 18% of deaths in 2018—a challenge policymakers argue is being exacerbated by the increase in the number of extreme weather events and rapid urbanization as they tinker with strategies for reducing air pollutants. Drawing on a number of ensemble machine learning methods that have emerged as a result of advancements in data science, this study examines the effectiveness of using ensemble models for forecasting the concentrations of air pollutants, using PM2.5 as a representative case. A comprehensive evaluation of the ensemble methods was carried out by comparing their predictive performance with that of other standalone algorithms. The findings suggest that hybrid models provide useful tools for PM2.5 concentration forecasting. The developed models show that machine learning models are efficient in pr...
The study assessed the practice of do-it-yourself (DIY) maintenance as a means of improving housi... more The study assessed the practice of do-it-yourself (DIY) maintenance as a means of improving housing stock in Lagos state.The study identified the factors influencing and militating against the practice. In achieving the set objectives, the study adopted research survey technique.A total of 300 questionnaires comprising 160 for owner-occupiers and 140 for tenants were administered for the study.The population was selected from fifteen (15) local government areas in Lagos state, based on stratified random sampling technique. Data collected were analysed using descriptive and inferential statistics. The findings of the study revealed that the factors influencing the practice of do-it-yourself (DIY) maintenance are; to provide a habitable environment, to retain the performance of facilities amongst others while the factors militating against the practice are; jobs involving special skills, health and safety issues, lack of technical know-how amongst others.The hypotheses postulated reve...
The research work delves into the origin of public housing in Lagos, Nigeria and its development ... more The research work delves into the origin of public housing in Lagos, Nigeria and its development over the years. It identifies the challenges of public housing but focuses on appraising the quality assurance practices in the construction industry. The objectives are to examine the factors that hinder effective quality assurance practices; and to ascertain who should be largely responsible for ensuring/enforcing effective quality assurance practices in public housing projects. In achieving the objectives, a field survey involving a sample size of 73 respondents, mainly the professionals in the built environment working directly with Lagos State and those managing the housing projects awarded to different contractors using structured questionnaires. The study reveals that the aims and objectives of quality assurance are easily compromised and frequently lost since it relies heavily upon the individual contributions to implementation from each designer, contractor, supplier and subcontractor. The study concludes that all have major roles to play in ensuring quality work in public housing projects; enforcement of quality standards by government agencies, setting up of quality assurance department in construction firms and enforcing statutory requirements as well as providing trainings and seminars on quality standard. Severe penalty for non compliance to quality standards be put in place by government and professional bodies. Clients must demand proof of contractors’ credentials for quality assurance capability before compiling their tender lists, and professionals on the project must try to work together in attaining desired quality.
The study examined the labour composition for maintenance works in the public hospital buildings ... more The study examined the labour composition for maintenance works in the public hospital buildings in South-West, Nigeria, and in the process identified if there are any significant differences in the execution of maintenance works using outsourcing and in-house labour. In achieving the objective, the study adopted research survey technique with a total of 552 questionnaires comprising 206 for maintenance staff and 346 for users of public hospital collected and used for the study. The survey covered 46 public hospitals representing 40% of the total number of public hospitals existing in South-West, Nigeria. It comprises all the 11 federal owned hospitals and 35 selected states owned based on stratified random sampling technique. Data collected were analysed using descriptive and inferential statistics. The findings of the study revealed that there is no variation in the work performed by the use of in-source and outsourced labour. However, maintenance staff rated the use of in-source ...
The study investigated the maintenance management practice in public hospital buildings in South-... more The study investigated the maintenance management practice in public hospital buildings in South-west, Nigeria, and identified the essential skills for maintenance managers in a hospital built environment. A total of 552 questionnaires comprising 206 for maintenance staff and 346 for users of public hospital building were collected and used for study. The survey covered 46 public hospitals representing 40% of the total number of existing public hospitals in South-west, Nigeria based on stratified random sampling technique. Data collected were analysed using mean item score, and spearrank correlation coefficient. Findings of the study revealed that the staff strength of the maintenance departments is inadequate and they are inexperience on hospital maintenance management. Majority of the users of public hospital buildings do not have access to any formal training on effective use of hospital facilities. The skills considered necessary for an effective maintenance manager in executing...
The prevalence of diverse factors affecting maintenance management determines the impact of such ... more The prevalence of diverse factors affecting maintenance management determines the impact of such factors on the maintenance of prison facilities. This study investigates factors that affect the maintenance management of prison facilities in South-West, Nigeria. Questionnaires were used to collect data from the prison staff in the maintenance unit of all prisons situated in South-west, Nigeria. The statistical tools employed for the study were percentage, mean scores, kendall’s coefficient of concordance test of agreement. Result showed that deterioration due to age of facilities, overcrowding, inadequate plant and equipment for maintenance operations as well as inadequate training and development for prison maintenance staff are critical underlying factors. This result enabled the maintenance unit to identify the predominance factors. The study acknowledged the predominance barriers to implementation of satisfactory maintenance management. For better management of maintenance of pri...
Journal of Quality in Maintenance Engineering, 2018
Purpose The purpose of this paper is to identify and assess the factors affecting maintenance man... more Purpose The purpose of this paper is to identify and assess the factors affecting maintenance management performance of hospital buildings in Amman, Jordan. Besides, the operational state was evaluated and the practices of maintenance management were assessed. Design/methodology/approach In total, 70 items were identified through a rigorous literature review, grouped into seven categories, and a framework was developed. Besides, practices of maintenance management were assessed and the operational state was evaluated. The data were collected through distributing questionnaires to maintenance department staff in all public and private hospitals in Amman, Jordan. In total, 219 questionnaires were obtained and the data were subjected to an exploratory factor analysis. As well, descriptive, correlation, and inferential analysis were performed. Findings The analysis proved that 14 items representing four factors had significant effect on maintenance management performance and a new frame...
The state of utilities and infrastructure within an academic institution plays a vital role in le... more The state of utilities and infrastructure within an academic institution plays a vital role in learning and the development of human capital. Hence, this study seeks to examine the management practices used in maintaining facilities in a government-owned tertiary institution and then examine the conditions of critical facilities and their related services in the institution. To achieve the study's goal, a questionnaire survey approach was used to collect information about users' and property managers' perceptions of maintenance management practices. The results revealed the existence of a maintenance policy covering critical systems and services. The discovery also implies that maintenance tasks are generated and planned in response to inspections and user requests. Respondents' perceptions of the state of facilities and utilities indicate that they are in good condition. While literature shows school infrastructure issues remain an ongoing concern, the majority of r...
International Journal of Building Pathology and Adaptation
PurposeThis study aimed at determining the decisive factors for achieving sustainable procurement... more PurposeThis study aimed at determining the decisive factors for achieving sustainable procurement in construction projects.Design/methodology/approachQuestionnaire survey of principal stakeholders involved in construction project delivery within client, consulting and contracting organisations in Nigeria were conducted to assess stakeholders' perspectives on the decisive factors for achieving sustainable procurement in construction projects using importance weights. A total of 243 questionnaires were distributed and a response rate of 51% (123 questionnaires were adequately filled and returned) was achieved. Descriptive and inferential statistics were utilised in analysing elicited data.FindingsThe results from data analysis showed that “satisfaction – including workforce satisfaction and user satisfaction”, “value for money” and “creating a healthy, nontoxic environment – including high indoor air quality” were the top most three decisive factors for achieving sustainable procu...
Festac Town Housing Estate (Phase 1) was conceived and executed in the 70's as a masterpiece ... more Festac Town Housing Estate (Phase 1) was conceived and executed in the 70's as a masterpiece in terms of providing mass housing, livable environment and complementary infrastructure facilities. This qualitative study uses purposive and stratified sampling. Research instruments of interview, and a questionnaire schedule was administered to a sample population of 210 Festac residents to investigate the condition of houses, condition and adequacy of estate physical infrastructure facilities, the residents' level of utility satisfaction with the social infrastructure, and affordability. The study, using descriptive analysis, and Chi-square Goodness of Fit test, shows that the condition of buildings and internal building amenities are generally good, except their water taps and laundry. Estate physical infrastructure facilities are in deplorable condition. The residents are satisfied with security, health centres and clinics, schools, police and fire services, post office, market...
Building maintenance management in institutions and organisations with sizeable building assets i... more Building maintenance management in institutions and organisations with sizeable building assets is a complex and multi-faceted process that involves planning, directing, controlling and organizing resources for the sustenance of the building’s physical, functional and operational performance. The purpose of this research work is to propose ways of optimizing maintenance expenditure of institutional buildings in Nigeria. Based on review of literatures, factors impacting maintenance costs were categorized into four categories comprising of; building characteristics, political factors, technical and administrative factors respectively. A questionnaire survey of maintenance departments’ staff of tertiary institutions in Lagos State was conducted and the data were analyzed using the statistical packages for social science (SPSS). The study reveals the predominant factors affecting maintenance costs of institution buildings to include; age, floor area and vertical spread of buildings, poo...
Built Environment Project and Asset Management, 2021
PurposeThe study investigates the extent to which defects in coastline buildings are influenced b... more PurposeThe study investigates the extent to which defects in coastline buildings are influenced by the climatic conditions within the coastal zones.Design/methodology/approachThe study conducted both desk study and field survey. The primary data for the study were collected through a cross-sectional survey of facilities and maintenance managers of randomly selected coastline buildings. Of the 120 self-administered structured questionnaires, 102 were successfully retrieved representing an 85% response rate. Data collected were analysed using charts, relative prevalence index and Spearman's rho correlation visualization technique.FindingsSaltwater intrusion, ocean overflow, extreme rainfall, debris flow, floods and droughts are the prevalent climatic conditions along the coastline. Steel corrosion, foundation settlement, spalling of concrete and fading of finishes are prevalent defects in coastline buildings. The result shows a positive significant correlation between climatic con...
Building collapses are becoming more common, resulting in the loss of lives, a waste of resources... more Building collapses are becoming more common, resulting in the loss of lives, a waste of resources, time, and money. When a building collapses, the shock has a societal, and often even international impact, and causes disgrace to the entire chain of stakeholders in the building industry. This study identified the contributions of internal stakeholders on building collapse as well as identify the factors that influenced building collapse in Lagos State. A survey of one hundred and fifty (150) construction stakeholders was conducted with ninety-two (92) questionnaires successfully retrieved and processed for analysis. Random sampling technique was used. Data collected were analyzed using the frequency table, mean score, and ANOVA (Analysis of Variance). The result reveals that there is significant difference in the contributions of internal stakeholders on building collapse in Lagos State. The study concludes that all internal stakeholders have a significant role to play on building co...
International Journal of Environmental Research and Public Health
The link between air pollution and health burden in urban areas has been well researched. This ha... more The link between air pollution and health burden in urban areas has been well researched. This has led to a plethora of effective policy-induced monitoring and interventions in the global south. However, the implication of pollutant species like PM2.5 in low middle income countries (LMIC) still remains a concern. By adopting a positivist philosophy and deductive reasoning, this research addresses the question, to what extent can we deliver effective interventions to improve air quality at a building structure located at a busy road node in a LMIC? This study assessed the temporal variability of pollutants around the university environment to provide a novel comparative evaluation of occupational shift patterns and the use of facemasks as risk control interventions. The findings indicate that the concentration of PM2.5, which can be as high as 300% compared to the WHO reference, was exacerbated by episodic events. With a notable decay period of approximately one-week, adequate protec...
Exposure of humans to high concentrations of PM2.5 has adverse effects on their health. Researche... more Exposure of humans to high concentrations of PM2.5 has adverse effects on their health. Researchers estimate that exposure to particulate matter from fossil fuel emissions accounted for 18% of deaths in 2018—a challenge policymakers argue is being exacerbated by the increase in the number of extreme weather events and rapid urbanization as they tinker with strategies for reducing air pollutants. Drawing on a number of ensemble machine learning methods that have emerged as a result of advancements in data science, this study examines the effectiveness of using ensemble models for forecasting the concentrations of air pollutants, using PM2.5 as a representative case. A comprehensive evaluation of the ensemble methods was carried out by comparing their predictive performance with that of other standalone algorithms. The findings suggest that hybrid models provide useful tools for PM2.5 concentration forecasting. The developed models show that machine learning models are efficient in pr...
The study assessed the practice of do-it-yourself (DIY) maintenance as a means of improving housi... more The study assessed the practice of do-it-yourself (DIY) maintenance as a means of improving housing stock in Lagos state.The study identified the factors influencing and militating against the practice. In achieving the set objectives, the study adopted research survey technique.A total of 300 questionnaires comprising 160 for owner-occupiers and 140 for tenants were administered for the study.The population was selected from fifteen (15) local government areas in Lagos state, based on stratified random sampling technique. Data collected were analysed using descriptive and inferential statistics. The findings of the study revealed that the factors influencing the practice of do-it-yourself (DIY) maintenance are; to provide a habitable environment, to retain the performance of facilities amongst others while the factors militating against the practice are; jobs involving special skills, health and safety issues, lack of technical know-how amongst others.The hypotheses postulated reve...
The research work delves into the origin of public housing in Lagos, Nigeria and its development ... more The research work delves into the origin of public housing in Lagos, Nigeria and its development over the years. It identifies the challenges of public housing but focuses on appraising the quality assurance practices in the construction industry. The objectives are to examine the factors that hinder effective quality assurance practices; and to ascertain who should be largely responsible for ensuring/enforcing effective quality assurance practices in public housing projects. In achieving the objectives, a field survey involving a sample size of 73 respondents, mainly the professionals in the built environment working directly with Lagos State and those managing the housing projects awarded to different contractors using structured questionnaires. The study reveals that the aims and objectives of quality assurance are easily compromised and frequently lost since it relies heavily upon the individual contributions to implementation from each designer, contractor, supplier and subcontractor. The study concludes that all have major roles to play in ensuring quality work in public housing projects; enforcement of quality standards by government agencies, setting up of quality assurance department in construction firms and enforcing statutory requirements as well as providing trainings and seminars on quality standard. Severe penalty for non compliance to quality standards be put in place by government and professional bodies. Clients must demand proof of contractors’ credentials for quality assurance capability before compiling their tender lists, and professionals on the project must try to work together in attaining desired quality.
The study examined the labour composition for maintenance works in the public hospital buildings ... more The study examined the labour composition for maintenance works in the public hospital buildings in South-West, Nigeria, and in the process identified if there are any significant differences in the execution of maintenance works using outsourcing and in-house labour. In achieving the objective, the study adopted research survey technique with a total of 552 questionnaires comprising 206 for maintenance staff and 346 for users of public hospital collected and used for the study. The survey covered 46 public hospitals representing 40% of the total number of public hospitals existing in South-West, Nigeria. It comprises all the 11 federal owned hospitals and 35 selected states owned based on stratified random sampling technique. Data collected were analysed using descriptive and inferential statistics. The findings of the study revealed that there is no variation in the work performed by the use of in-source and outsourced labour. However, maintenance staff rated the use of in-source ...
The study investigated the maintenance management practice in public hospital buildings in South-... more The study investigated the maintenance management practice in public hospital buildings in South-west, Nigeria, and identified the essential skills for maintenance managers in a hospital built environment. A total of 552 questionnaires comprising 206 for maintenance staff and 346 for users of public hospital building were collected and used for study. The survey covered 46 public hospitals representing 40% of the total number of existing public hospitals in South-west, Nigeria based on stratified random sampling technique. Data collected were analysed using mean item score, and spearrank correlation coefficient. Findings of the study revealed that the staff strength of the maintenance departments is inadequate and they are inexperience on hospital maintenance management. Majority of the users of public hospital buildings do not have access to any formal training on effective use of hospital facilities. The skills considered necessary for an effective maintenance manager in executing...
The prevalence of diverse factors affecting maintenance management determines the impact of such ... more The prevalence of diverse factors affecting maintenance management determines the impact of such factors on the maintenance of prison facilities. This study investigates factors that affect the maintenance management of prison facilities in South-West, Nigeria. Questionnaires were used to collect data from the prison staff in the maintenance unit of all prisons situated in South-west, Nigeria. The statistical tools employed for the study were percentage, mean scores, kendall’s coefficient of concordance test of agreement. Result showed that deterioration due to age of facilities, overcrowding, inadequate plant and equipment for maintenance operations as well as inadequate training and development for prison maintenance staff are critical underlying factors. This result enabled the maintenance unit to identify the predominance factors. The study acknowledged the predominance barriers to implementation of satisfactory maintenance management. For better management of maintenance of pri...
Journal of Quality in Maintenance Engineering, 2018
Purpose The purpose of this paper is to identify and assess the factors affecting maintenance man... more Purpose The purpose of this paper is to identify and assess the factors affecting maintenance management performance of hospital buildings in Amman, Jordan. Besides, the operational state was evaluated and the practices of maintenance management were assessed. Design/methodology/approach In total, 70 items were identified through a rigorous literature review, grouped into seven categories, and a framework was developed. Besides, practices of maintenance management were assessed and the operational state was evaluated. The data were collected through distributing questionnaires to maintenance department staff in all public and private hospitals in Amman, Jordan. In total, 219 questionnaires were obtained and the data were subjected to an exploratory factor analysis. As well, descriptive, correlation, and inferential analysis were performed. Findings The analysis proved that 14 items representing four factors had significant effect on maintenance management performance and a new frame...
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