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Browsing Building- Staff Publications by Author "Adenuga, O. A."
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- ItemOpen AccessAppraisal of Maintenance Management Strategies Used in Public Hospital Buildings in Lagos State, Nigeria(2007) Adenuga, O. A.; Iyagba, R. O.; Odusami, K. T.; Ogunsanmi, O. E.This study focuses on the evaluation of maintenance management strategies used in public hospital buildings in Lagos state. It also assesses the labour composition of maintenance operations. In achieving these objectives, opinions of maintenance officers of ten (10) hospitals in different local government areas of the state were sampled through well-structured questionnaires. The data collected were analysed using descriptive and inferential statistics. From the analysis, the study reveals that majority of public hospitals do not have specific budget for maintenance programmes, maintenance policies, maintenance log book and maintenance manual to guide the operatives. About 98% of the sample does not understand the type of maintenance strategy used for their maintenance operations. 78% of the maintenance work are only executed when there is a breakdown or in response to users’ request. For labour composition, the cleaning of the interior and exterior of the building, inspection of building elements are mainly carried out by in-house staff, while the repair and replacement of equipment is by outsourcing. The study also reveals that executing maintenance programmes using outsourcing gives latest innovations in technologies to work done and better access to special skills than in-source. In-source method, gives reduction in cost of operation, higher security, more flexibility in staffing, better adjustment to workload fluctuation and reduction in equipment downtime than out-source. Both methods claim to produce special expertise in labour, better control of services and higher quality of work. The study recommends proactive measures such as providing necessary training and support for maintenance staff and users of these facilities and the provision of sufficient funds for maintenance programmes.
- ItemOpen AccessAppraisal of the Factors Affecting Effective Implementation of the National Housing Policy(2007) Akinsola, O. E.; Adenuga, O. A.; Iyagba, R. O. A.The study started by stating the importance of housing by narrating the historical background; the attendant cost of housing delivery, and appraised the factors affecting effective implementation of the National Housing Programme of 1991. The causative factors of inadequate housing provision such as imbalance in housing distribution, high cost of building materials and land use system were examined. The method adopted was based on probabilistic sampling analysis of data, and tested hypotheses. The findings revealed the unpreparedness of government in the execution of the programme. The various problems and constraints of the contractors who handled the projects were highlighted by the survey as fund, unsuitable contractual arrangement, materials diversion etc. The research recommended setting up of monitoring and evaluation committee for similar future undertakings, the substitution of local raw materials to reduce cost, elimination of bureaucracy in governance to reduce delay and payment of mobilization fee on production of certified performance bond.
- ItemOpen AccessAssessment of Factors Affecting Maintenance Management of Public Hospital Buildings in Lagos State, Nigeria(2011) Adenuga, O. A.The study focused on factors affecting maintenance management of public hospital buildings in Lagos state. It also assessed the operational state of public hospital buildings within the study area. In achieving these objectives, opinions on maintenance officers and users of selected public hospital buildings were sampled through structured questionnaires. The data collected were analysed using descriptive and inferential statistics. The analysis revealed the operational state of public hospital buildings in Lagos State as been average, and there is no significant difference in the perception of the maintenance staff and users as well as to the operational state. Maintenance officers and users of the buildings both ranked insufficiency of fund for maintenance programme as second most significant factor ranked among other factors responsible for poor maintenance management of our public hospital buildings. Other factors found to be highly significant by the maintenance officers are; attitude of users and misuse of facilities, lack of discernible maintenance culture, inadequate training and reluctance of some establishment to support innovations. The users on their own perspective, ranked the inflation of cost of maintenance by the operatives, use of poor quality components and materials by the maintenance department and without long-term arrangements for the supply of essential parts for replacement as the most significant factor affecting maintenance management respectively. The study recommended proactive measures to reduce the occurrence of defects in the buildings elements and services. Governments are to provide adequate funding for the running of public hospitals and it should be a government policy that every hospital either public or private must have maintenance policy guiding the implementation of their maintenance programme. Building elements should be regularly inspected to ensure their functionality.
- ItemOpen AccessAssessment of Factors Generating Sick Building Syndrome in Ikorodu(2010) Adesanya, A. A.; Dekolo, S.; Adenuga, O. A.Planning has been very proactive in outdoor environmental issues with lesser emphasis on the indoor environments. However, large parts of our daily lives are spent indoors and the quality of life in any community is largely dependent on the internal and external condition of every building. Even though some natural factors such as climate and pollutants migrating from the outdoor environment are responsible for the discomfort and health problems within buildings, there are also man-made factors relating life-style, materials and product used for buildings, which could be of concern to the urban planners and the public. This study aims at examining the prevalence of Sick Building Syndrome generating factors within resident buildings in Ikorodu Local Government with an emphasis on building conditions and materials. In achieving this objective, the study adopted research survey technique with questionnaires administered to the occupants within the study area based on stratified random sanpling technique. Data collected were analysed using descriptive and inferential statistics. The findings of the study revealed that the level of factors generating SBS examined is very high within the study area. Suggestions are made for legislation to strengthen existing development control efforts in the area of building regulations and product specifications for new buildings, maintenance of existing housing stock in the study area and in the larger society.
- ItemOpen AccessAssessment of Factors Influencing Facility Management Procurement Route in Lagos State, Nigeria(Journal of Surveying, Construction & Property, 2013) Faremi, J. O.; Adenuga, O. A.; John, I. B.Procurement of Facility Management (FM) services can be made through three main approaches; In-sourcing, Outsourcing or a combination of both In-sourcing and Outsourcing (Hybrid). The approach taken depends on the priority set by the organisation for the services to be procured amidst prevailing constraints and limitations. Many organisations follow a rule of chance approach in choosing a particular FM procurement option that seems right at the time and then wait to learn from the outcome later, this no doubt can come at a very high consequence to the organisation. This study therefore assesses the factors influencing the choice of procurement routes in facilities management. 75 structured research questionnaires were distributed, 55 were completed and returned representing a 73% response rate. The findings of this study shows that continuity and risk management are the most important factors influencing decision when considering in-house procurement route for FM services while reduced overhead and improved process responsiveness were ranked as top factors considered when outsourcing and choosing the hybrid routes respectively. It was recommended that organisations must strive to achieve efficiency in their service delivery for enhanced customer satisfaction.
- ItemOpen AccessAssessment of Maintenance Management Practices in Lagos and Ogun State Prisons of Nigeria(2010) Farinloye, O. O.; Adenuga, O. A.; Iyagba, R. O. A.The prison buildings and facilities on ground are few, in deplorable state and not environmentally friendly compared to the population of its inmates thereby making life in the prisons, too degrading, brutal and dehumanising. Congestion has consequences on the inmates, the prison system and the society. The study assesses the operational state and the factors affecting the maintenance practices. In the course of the study, structured questionnaire were administered to investigate maintenance managers and users, the prison officials in Lagos and Ogun state. Hypotheses relevant to assessment of prison maintenance practices were postulated to ascertain the significant differences in physical condition of prison buildings and the significant factors affecting prison maintenance practices. Data collected were analysed using mean scores, spearman’s rank correlation, and factor analysis. The study revealed that prison maintenance departments are short of staff and of low technical competences. There is a need to build more prison facilities especially for female inmates.
- ItemOpen AccessAssessment of Procurement Methods Used for Executing Maintenance Works in Lagos State(Ethiopian Journal of Environmental Studies and Management, 2012) Adenuga, O. A.; Dosumu, O. S.The objectives of the study are to determine the procurement methods used by clients to execute maintenance works in Lagos state, identify the factors that influence the choice of those methods and establish the differences in the efficiencies of out-sourced and in-sourced maintenance. Out of the 60 questionnaires sent out to respondents, 34 (giving a response rate of 57%) were retrieved and used for the study. The 34 responses were obtained from randomly selected organizations like Local Authority Housing, Housing Association, Residential Managing Agent, Universities, Health Authorities and Private Commercial Property Owners. The results of the study show that direct labour, lump sum contract and traditional contract, cost reimbursement contract and measured term contracts, are the most commonly adopted procurement methods in Lagos state for maintenance works. Time duration, cost of project and quality level required, are the major factors influencing the choice of procurement methods. Others are risk allocation, price competition and flexibility of contract. Finally, better access to special skills, getting the latest technologies, higher quality work and higher security are the important efficiency factors for out-sourcing and in-sourcing.
- ItemOpen AccessAn Assessment of the State of Maintenance of Public Hospital Buildings in Southwest Nigeria(2009) Adenuga, O. A.; Ibiyemi, A.This study examines the state of maintenance of public hospital buildings in Southwest Nigeria, and in the process identifies the significant difference(s) in the operational state of Federal and State-owned public hospitals within the study area. In achieving the aim, the study adopts a survey technique with a total of 552 questionnaires, comprising 206 sampled maintenance staff and 346 users of public hospitals. The survey covers 46 public hospitals representing 40% of the total number of public hospitals existing in Southwest Nigeria. The 46 public hospitals consist of all the 11 Federal-owned hospitals and 35 randomly selected State-owned. Data collected are analysed using the Kendall Coefficient of Concordance and Pearson Chisquare. The findings of the study reveal that the state of maintenance of public hospital buildings is good. While the structure/fabric and physical conditions are rated highly, the services are poorly rated. This study, which hypothesises that there is no difference in the state of maintenance, finds statistical difference in the performance of the services. It recommends that Federal and State governments address neglect in the services sector and plan their maintenance programmes more effectively.
- ItemOpen AccessCauses, Effects and Remedies of Errors in Nigerian Construction Document(2013) Dosumu, O. S.; Adenuga, O. A.Errors entail different meanings and usages depending on how it is conceptualized. The purpose of this paper is to determine the causes, effects and remedies of the errors in Nigerian construction documents. A structured questionnaire was administered on ninety consultants (Builders, architects, engineers and quantity surveyors) obtained from regulatory bodies of each profession. Forty four questionnaires were returned and this gives a response rate of 49%. The findings of the research show that clients are the major stakeholders responsible for the generation of errors in Nigerian construction documents. The causes of the errors are lack of adequate documentation, poor communication, negligence and changes to specifications among others and the effects on construction projects include project abandonment, delays, rework, dissatisfaction by project owners and lack of confidence in project consultants. The suggested solutions include provision of comprehensive information, good communication among project teams, effective and efficient project management, constructability, design review management and adequate financial provision. The study recommends that clients should allow adequate time for the preparation of construction documents and adopt appropriate procurement method. The designers were advised to engage in partnering while preparing construction documents.
- ItemOpen AccessCharacteristics of Concrete Produced with Lagoon and Atlantic Ocean Water(2011) Raheem, A. A.; Adenuga, O. A.; Afolabi, O. A.Dwellers along the coastline area of Lagos State, Nigeria, are exposed to abundant supply of the natural resources of Atlantic Ocean and Lagoon water and may not have the privilege of having potable drinking water at their disposal for producing concrete. This study evaluates the characteristics of concrete produced with Atlantic Ocean and Lagoon water. Concrete produced with Tap water (regarded as potable drinking water) serves as the control experiment. Compressive strength, Workability and Density, were used to evaluate the characteristics of concrete specimens. All the concrete samples have true slump with Lagoon water concrete having low workability and both Tap and Atlantic Ocean water concrete having medium workability. The concrete specimens produced with the three types of water fall into the category of normal weight concrete as their densities lie within the range of 2200 to 2600 kg/m3 specified. The 28th day compressive strength of concrete specimens produced with Atlantic Ocean, Tap and Lagoon water are 25.0 and 33.5 N/mm2, 17.9 and 28.6 N/mm2 as well as 15.1 and 19.4 N/mm2 for mix ratios 1:3:6 and 1:2:4, respectively. The very high compressive strength of concrete specimens produced with Atlantic Ocean water notwithstanding, the high chloride content in it is detrimental to its use where reinforced steel bars are required. It was concluded that Tap water should be used in mixing concrete where strength is of major concern and Lagoon water may be used for general concrete works where strength is of less importance such as in mass concrete, floor screed and mortar.
- ItemOpen AccessComparative Analysis of Design & Build and Traditional Procurement Methods in Lagos, Nigeria(2009) Ibiyemi, A. O.; Adenuga, O. A.; Odusami, K. T.Design-Build (D&B) is a method of obtaining construction services where a single organisation is retained to provide architecture/ engineering and construction services under one contract. This contrasts with the more Traditional Procurement Approach (TPA) where an architect or engineer prepares drawings and specifications and the owner separately engages a contractor through a competitive bidding or negotiated process. Research shows that there has been a continuous increase in the use of D&B over the past 15 years. A random sample of 40 respondents with an average of 20 years experience in the construction industry in Lagos, Nigeria, drawn from Managing Directors, Construction Managers, Chief Engineers, and Contractors in six different types of construction projects was taken. The survey results indicate that D&B was rated to perform better where time, cost, quality, comprehensiveness, suitability to different types of construction projects, and acceptability were of the essence and the project was highly complex. D&B is recommended subject to a more stringent contractor-selection process in order to assess reliability, sincerity, honesty and understanding of the needs of the owner.
- ItemOpen AccessComparison of The Performance of Traditional and Direct Labour Methods of Project Procurement: A Case Study of Some Selected Projects of the Nigerian Army(2013) Adenuga, O. A.The study examined the performance of the two project procurement methods often employed by the Nigerian Army. The objective was to find out if one has any advantage over the other. Project success determinants like cost, time and quality formed the basis for evaluation and comparison of the performance of the two methods. Thirty completed building projects made up of ten new buildings and twenty renovation works were examined. Comparison was done based on similarity of projects specifically, the magnitude of work, the type and specifications of work. Fifteen projects made up of ten renovation works and five new projects were thus considered for analysis for each of the two procurement methods compared. Results indicate that there is no significant difference in the quality of projects procured using either of the two procurement methods. Further results also indicate that in terms of cost overrun, there is no significant difference between the two. It was however discovered that overall cost and unit cost of projects were higher for those procured using the traditional contract system. It was also discovered that significant difference does exist between time overruns in the two methods. Projects procured using the direct labour method took more time. The study concludes that there is the need for continuous training and exposure of the in- house professionals to improve their proficiency and efficiency to further enhance the quality of their products and improve upon the time taken to execute them.
- ItemOpen AccessCompliance to Quality Standards in the Construction of Infrastructural Services in Lagos State, Nigeria(2012) Adenuga, O. A.The study evaluates contractors’ compliance level to quality standards in the construction of infrastructural services in Lagos State. The implications of non-compliance, the processes and criteria used in the awarding of contract were also examined. A total of 47 respondents currently engaged in the construction of infrastructural services were selected for the study using stratified random sampling technique. The data were analysed using descriptive statistics. The survey carried out indicated that most contractors in Lagos do not comply with quality standards during the construction of infrastructural services. Factors such as clarity and buildability of project design, criteria adopted in awarding contracts, materials and skilled labour availability were identified as factors affecting compliance to quality standards. Processes and criteria of awarding contracts such as due process, quota system, relationship, political power and compensation were identified to have affected compliance level to quality standards. It was deduced that non-compliance to quality standard leads to cost overrun, untimely project delivery and poor infrastructural services. This study concludes that with effective enforcement of quality standards at every phase of projects, contractors will achieve a significant improvement on their job delivery. The study recommends that all stakeholders in the industry must understand and comply with quality standards at all times.
- ItemOpen AccessDemand Indicators for Estimating and Predicting Electricity Consumption in Residential Buildings: A Case Study of Obafemi Awolowo University, Ile-Ife, Nigeria.(2010) Olufowobi, M. B.; Adenuga, O. A.; Olanipekun, E. A.The study examined the trend of electricity consumption in residential buildings with a view of developing models for predicting the energy consumption. Each higher institution of learning in Nigeria spends a considerable percentage of overhead expenditure on payment of energy bills. In most cases, the derived income from the residential sector is far below the actual expenditure expended by the management due to lack of adequate statistical records and flat rate system of billing adopted. In order to provide solution in the trend, a purposive sampling technique was adopted whereby; the electricity consumption in a sample of houses within the study area is studied. Energy consumption in this sector was monitored for a period of twelve months and the results were analysed using correlation and regression analysis. Models were developed to predict the energy consumption in the staff houses. The results show that the energy use pattern in these houses can be predicted accurately and this has contributed to providing an input into the income and expenditure budget. The results show also that with the knowledge of the prevailing tariff, the models developed can be used to estimate the electricity cost ascribed to individual houses in the residential sector of public institution buildings and similar houses where statistical record are not available and accessibility is a problem.
- ItemOpen AccessEffective Maintenance Policy as a Tool for Sustaining Housing Stock in Downturn Economy(2010) Adenuga, O. A.; Olufowobi, M. B.; Raheem, A. A.The study considered how effective maintenance strategies could serve as a tool for sustaining housing delivery in periods of economic recession. It identified the causes of neglect of maintenance responsibilities in some selected government institutions, ministries, parastatals and public estates within Lagos metropolis and to develop adequate maintenance implementation strategies for these buildings. In achieving these objectives, opinions of (30) randomly sampled maintenance officers of selected government institutions, ministries, parastatals, and occupiers of selected public estates were collected using structured questionnaires and personal interviews. Data analysis indicated that lack of discernible maintenance culture in the country; lack of emphasis on training, retraining and continuing education on effective maintenance by establishment are the major reasons for neglect of maintenance responsibilities. The study also revealed that majority of the population studied provides budgets for maintenance operation but this was found to be inadequate. The study recommended proactive approaches to maintenance by providing guidelines for maintenance checklist operations on key building elements, frequencies for maintenance operations, and operatives required for effective implementation.
- ItemOpen AccessAn Evaluation of Housing Conditions and Livability in Festac Town Housing Estate (Phase 1)(2006) Ibiyemi, A. O.; Adenuga, O. A.Festac Town Housing Estate (Phase 1) was conceived and executed in the 70’s as a masterpiece in term of providing mass housing, livable environment and complimentary infrastructure facilities. This study uses the purposive and stratified sampling and the instruments of interview, and questionnaire schedule to a sample population of 210 Festac residents to investigate the livability in the Estate with particular reference to condition of buildings and international building amenities are generally good, while infrastructure facilities are in satisfactory condition. Rents for vacant accommodation, water / tenement rates, and public transportation are quite high but largely affordable. However, 52% of the sample residents are willing to trade off security and access to work place, by relocating elsewhere but are constrained by the initial costs of securing alternative accommodation. The work concludes that, in spite of the harsh economic climate, the Estate is able to meet the needs and aspirations of its residents
- ItemOpen AccessEvaluation of maintenance management practice in banking industry in Lagos state, Nigeria(2012) Faremi, O. J.; Adenuga, O. A.The study focused on maintenance management practice in banking industry in Lagos state, Nigeria. It assessed the operational state of bank buildings, the factors affecting maintenance management of bank buildings, the maintenance management strategy used in maintaining bank buildings and the adequacy of funds available for maintenance management of bank buildings within the study area. In achieving these objectives, opinions of maintenance officers and users of randomly selected banks were sampled through structured questionnaires. The data collected were analyzed using descriptive and inferential statistics. The analysis revealed the operational state of bank buildings in Lagos State as good, there is no significant difference in the perception of the maintenance staff and users as to the operational state. However, there is significant difference in the operational state of the old and the new generation bank buildings as the study reveals that the components and services of the buildings of the new generation banks are in better operational state than those of the old generation bank buildings. Maintenance officers ranked attitude of users and misuse of facilities as the most significant factor affecting maintenance management of bank buildings while users of the buildings ranked lack of discernable maintenance culture in the country as the most significant factor responsible for poor maintenance management of bank buildings. The perception of the maintenance staff and users of bank buildings as regards factors responsible for poor maintenance management of bank buildings are significantly different. The study recommended proactive measures to keep hypothesized factors under check in other to overcome the prevailing maintenance problems of bank buildings. Top management are to provide adequate funding for the running of maintenance operations and such funds should be properly monitored to ensure that it is judiciously utilized.
- ItemOpen AccessExploring Application of Programme Budgeting Management Technique in Construction Companies.(2007) Oladiran, O. J.; Adenuga, O. A.A survey was conducted on a sample of seven construction companies in Lagos State to investigate the extent of usage of a management technique: Programme Budgeting. It is a type of management technique that can be used to solve planning problems related to projects’ budget and expenditure. The study reveals that project planning problem exist averagely in construction companies; the usage of technique is very low; four reasons were adduced to its non-usage and; as many as six ‘alternative techniques’ that are used in-lieu of it are observed. The study therefore recommends its usage to combat planning problems.
- ItemOpen AccessFactors Affecting Quality in the Delivery of Public Housing Projects in Lagos State, Nigeria(2013) Adenuga, O. A.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.
- ItemOpen AccessLabour Composition for Maintenance Works in Public Hospital Built Environment in South-West, Nigeria(2010) Adenuga, O. A.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 insource better than outsource in that it is found to produce higher quality and better quality control of services, reduction in cost while outsourced gives an understanding of latest technologies with better access to special skills. Based on the above findings, the study recommends that maintenance staff should be well motivated. For optimum results, maintenance departments need to adopt sound policies, as this will provide appropriate basis for preparing budgets will that meet the actual maintenance needs of the hospital buildings and services. Maintenance managers are to do their best to prepare realistic need-based budgets while the government should make efforts to improve funding for hospital maintenance. Inefficiencies and inflexibility through the imposition of bureaucratic impediments to operational effectiveness should be avoided in hospital environment due to the sensitivity of the services being rendered. Maintenance staff and users of hospital buildings should be given opportunities for further training on their jobs also on effective use of hospital facilities.