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- ItemOpen AccessA post occupancy evaluation of students’ hostels accommodation.(Universiti Kebangsaan Malaysia, 2013) Oladiran O.J.Hostel accommodation is very crucial to the performance of students. A post occupancy evaluation (POE) of existing hostels could foster their improvement and services. This study focuses on POE of students’ hostel accommodation in the University of Lagos, Nigeria. The problem of the study is specifically concerned with investigating the availability of students’ hostel accommodation and the satisfaction derived by the users. The objectives of the study are to investigate students’ hostel accommodation and their users’ satisfaction, to examine the additional facilities provided in the hostels, to pinpoint the problems of the users and that of the facilities managers in managing the hostels. The population of the study is the students of the University of Lagos and the facility managers; while the sampling frame is the students resident in the institution-owned hostels and the facility managers of such hostels in the main campus of the University. Eleven hostels were used and random sampling technique was used to a select a sample of 179 from the frame. Descriptive and inferential statistics tools were used to analyze the data. The study reveals that the content of hostels accommodation in the University of Lagos includes bathrooms, common rooms, bedrooms, reading rooms, kitchen and fixtures. There is also a sparse availability of laundry, pantry and meeting room in some of the hostels. The level of satisfaction of the users with the hostels accommodation is “good” in term of noiselessness, indoor temperature, natural lighting, ventilation and water supply; while it is “fair” with electrical fittings, space, cleanliness and comfortability. The study recommends that more accommodation with state of the art facilities should be provided in the University of Lagos.
- ItemOpen AccessAcceptability and Use of Innovative Bamboo Products for the Construction of Residential Buildings in Nigeria(International Journal of Technology, 2019-07-29) Ameh, J.O; Aliu, S; Oyediran, SThe high cost and environmental and health hazards attributed to conventional building materials, coupled with the adverse effect of massive exploitation of forest resources for construction purposes, have necessitated the search for alternative construction materials that are eco-friendly, sustainable, economical and socially acceptable. This study aims to explore the acceptability and use of innovative bamboo products for residential building construction in Nigeria. One hundred and fifty-two survey questionnaires were distributed to built environment professionals within the Lagos region using the convenience sampling technique. The results show a likely disposition to the use of innovative bamboo products for building construction, except for roof beams and trusses, wall beams and columns, and composite roofing sheets. Major barriers to the acceptability and use of bamboo for construction include lack of knowledge about bamboo connections and detailing; the absence of governmental policy on bamboo as an alternative construction material; the absence of design standards for bamboo products; and poor public perception of the use of bamboo in building construction. The value of this study is that it provides an excellent platform for further research on the optimization of bamboo for construction, which will boost economic activities, reduce capital flight for the importation of machinery and the constituents of conventional building materials, and enhance the country’s GDP.
- ItemOpen AccessAFFORDABLE HOUSING FOR LOW-INCOME MASSES: A CASE STUDY OF A DENSELY POPULATED AREA IN LAGOS METROPOLIS(CSID Journal of Infrastructure Development, 2020) Ajayi, O.O.; Faremi, O.J.; Simeon, D.R.; Uwaje, E.A.A house is an essential facility that affords an abode, provides habitation and shelter adequacies. Affordable housing presumes access to a conducive, functional, and sustainable dwelling by the majority of the people within a locality. The study investigated the factors mitigating the actualization of affordable housing for low-income masses in the selected area. Survey research was adopted for the study. The population for the study is made up of two groups comprising low-income masses and construction professionals. The study adopted a multi-sampling method. Both convenient and random sampling techniques were utilized to gather information from the respondents. Statistical Package for Social Sciences (SPSS) was used for descriptive (frequency, percent, and mean score) and appropriate inferential analysis. Results indicated factors weighing down the provision of affordable housing as well as factors precluding accessible housing for low-income masses. Also, the response from construction professionals showed the level of agreement on factors impeding the provision of affordable housing. The trail to alleviate the effect of the non-affordability of housing for low-income masses becomes perceptible and addressed.
- ItemOpen AccessAn alternative sustainable walling material for building projects in construction industry(ASOCSA2023, 2023) Oladiran O.J.; Anugwo I.C.; Simeon D.R.Purpose Autoclaved Aerated Concrete (AAC) is an eco-friendly and sustainable material. This study evaluates the acceptability and key drivers as a walling material. Design methodology Seventeen online questionnaires were sent via email to South African construction practitioners in five provinces and 99 questionnaires self-administered to construction professionals in Lagos, Nigeria. The statistical techniques used for analyses were frequency distribution, percentages, ranking, mean score and percentage mean unit. Findings The top four AAC block types used in building projects in South Africa are those AAC made using Ordinary Portland Cement (OPC) of grade 52.5, OPC of grade 42.5, Aluminum Powder (AP) or Rice Husk Ash (RHA), and Palm Oil Fuel Ash (POFA) or Pulverized Fuel Ash (PFA). The top factors influencing the use of AAC in Nigeria are its lightweight characteristics, ecological improvements, energy efficiency, adaptation to hot regions, excellent heat assimilation characteristics, good fire resistance, and adaptability to architectural flairs. Whereas, AAC is mostly used in South Africa due to its outstanding fire insulation properties, lightweight characteristics, energy efficiency, superior thermal absorption characteristics, adaptability to any type of architecture, eco-friendliness; and remarkable thermal conductivity. Research implications The research draws the conclusion that AAC block producers that manufacture AAC variations outside the four listed above would probably not grow in business since they would receive little support from construction practitioners. Practical implications Although lightweight characteristics is the most important driver for both nations, the relevance of drivers for the use of AAC blocks varies. This suggests that practitioners in both nations prioritize the block's lightweight properties, which could be preferred for tall projects due to lower costs for the foundation and other structural components.
- ItemOpen AccessAn Examination of Quantity Surveyor’s Involvement in Projects’ execution in Nigerian Private Construction Organizations.(Federal University of Technology Minna, 2013) Oladiran O.J.Quantity Surveyors (QS) are charged with the responsibility of cost control in construction projects. They also perform several other duties in different projects while in some they are not involved at all. This research seeks to examine the extent of QS’ involvement in construction projects’ execution in Nigeria. The objectives are to find out the level of QS’ involvement in construction projects execution; to identify the various factors that influence their involvement; and to examine the impact of their involvement on projects’ outcomes. The population of the study is construction professionals in Nigeria and the sampling frame is professionals in private firms based in Lagos state, Nigeria. A questionnaire administrated via accidental sampling technique was used; resulting to a sample size of 29. Descriptive statistics tools were used for the analysis. The study reveals that QS’ involvement is highest or topmost in preparation of Bill of Quantities and Final Accounts; lack of public awareness influences their involvement most; and their highest impact is on project completion within budgeted costs. In order to improve the level of involvement of QS in construction projects, the study recommends that more awareness should be created for stakeholders especially among clients on the roles and benefits of QS’ involvement in construction projects.
- ItemOpen AccessAn investigation into the accuracy of electrical services cost estimation of selected building projects in Lagos State, Nigeria.(Department of Estate Management, University of Lagos, 2012) Oladiran O.J.
- ItemOpen AccessAn investigation into the usage of lean construction techniques in Nigeria.(University of Johannesburg, South Africa, 2017) Oladiran O.J.Inadequate implementation of lean construction techniques poses a serious problem to the Nigerian construction process. The usage of lean techniques at the early stage of construction projects results in enhanced environmental performance, waste reduction, an increase in profits, and sustainable construction, among other things. This study focuses on the implementation of lean techniques, with a view to enhancing their usage, thereby improving the performance of construction projects. It examines the lean construction techniques that are used, as well as the extent of their usage, the implementation processes that are used, the benefits of improving usage of lean construction techniques in the study area, and the measures used to improve implementation of such techniques. In achieving these objectives, construction professionals from 10 organisations in Lagos State, Nigeria, were interviewed on 12 selected lean techniques. The data were analysed using descriptive statistics tools, namely means, frequencies, percentages, and modes. The findings reveal that fail-safe quality and safety, daily huddle meetings, increased visualisation, and the 5S process are poorly used, while the other eight techniques, namely Last Planner® System (LPS®), first-run studies, just-intime (JIT), total production maintenance, concurrent design, kaizen, design for buildability, and supply chain management, are not used at all. Nevertheless, application of the aforementioned first four techniques has contributed to improved workflow on sites, maintenance of good site organisation, and increased job satisfaction among employees. It is recommended that top management, professional bodies, and institutions of higher learning make it a priority to offer education and training programmes on the concept of lean for workers on construction projects. Government should promote the concept of lean techniques, so as to encourage a culture of safety and improve productivity and performance on construction projects.
- ItemOpen AccessApplication Software Used in Building Project Delivery in Lagos, Nigeria.(Journal of Engineering and Environmental Studies, 2013) Ameh, O. J.; Olufowobi, M. B.The study aimed at exploring the types of application software used in building project delivery in Nigeria. A survey research design was employed. Forty one construction professionals from building and civil engineering consultancy firms were sampled using Judgment sampling technique. Data were analyzed using descriptive statistics. AutoCAD top the list of preferred 2D and 3D architectural design software, Staad Pro top the of dominant structural analysis/design software, Microsoft Excel and Microsoft project was the most used cost estimating and project management software respectively. Ability to handle complex projects, timely completion of operation (speed) and opportunity to review and amend documents were ranked the highest benefits of computer software. Virus attack leading to data loss was the most significant barrier to the adoption of Information and Communication Technology in the building and civil engineering consultancy firms. The study will serve as a guide to tertiary educational institutions in the review of their curriculum in line with ICT needs of the industry. It also bridges the gap in literature on international construction practice in IT.The study provides insight into construction industry hiring requirements for new graduate, in terms of proficiency in dominant application software both locally and internationally.
- ItemOpen AccessAppraisal of buildings for smart city specifications in a metropolitan city of Nigeria.(Faculty of Environmental Sciences, University of Lagos., 2019) Oladiran O.J.
- 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 AccessAPPRAISING THE MAINTENANCE PRACTICES IN SHOPPING MALLS ACROSS LAGOS METROPOLIS(Galileo Institute of Technology and Education of the Amazon (ITEGAM), 2023) Simeon D.R.; Oladiran O.J.; Abatan A.O.; Aminu R.A.Like other types of buildings, shopping mall buildings in Nigeria receive insufficient maintenance attention. The vast majority of shopping malls exhibit awful structural and aesthetic conditions of deterioration. This study, therefore, aims to investigate the maintenance practices of shopping malls with a view to addressing issues that arise from factors responsible for the deterioration of the building fabrics and components. Data from 97 building maintenance stakeholders from Lagos Island and Mainland malls were gathered using a cross-sectional survey utilizing two sets of structured self-administered questionnaires. The results revealed 31 maintenance practices implemented in shopping malls. The study also uncovered 21 key factors influencing the sourcing decision of maintenance practices in shopping malls. Besides, the results further revealed 22 causative factors that lead to the deterioration of shopping mall building fabrics and components. The study comes to the conclusion that regardless of the sourcing decision, other factors, such as quality and frequency of maintenance, have a significant impact on how quickly a shopping mall deteriorates. It is recommended that maintenance stakeholders should play active roles in ensuring shopping malls are adequately maintained. This may be achieved by developing a defined strategy for routine and preventive maintenance.
- ItemOpen AccessAssessment of Factors Affecting Maintenance Management of Public Hospital Buildings in Lagos State, Nigeria(RICS, Georgia tech publishers, 2007) Adenuga, O. A.; Odusami, K. T.; Faremi, J. O.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 of maintenance officers and users of selected public hospital buildings were sampled through structured questionnaires. The data collected were analyzed 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 the users 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 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 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 AccessAssessment of Risks Associated with The Procurement of Facilities Management Services in Nigeria(CIB W107 2014 International Conference, 2014) Faremi, J.O; Adenuga, O.A; John, I.B; Akinbode, A.TFacilities management (FM) services can be managed in-house, outsourced or partly in house and partly outsourced (Hybrid). Each of the FM procurement options possesses inherent risks of grave consequences. This study aim at assessing risks inherent in each of the procurement options for FM services. A structured questionnaire was used as the principal instrument for this study. 75 copies of structured questionnaires were distributed, 55 were completed and returned representing 73% response rate. Data for the study was processed and analysed using SPSS for both descriptive and inferential statistics. The analysis revealed risks with the highest level of potential occurrence in in-sourcing FM services as low labour productivity, overstaffing and poor accountability. While, threat to data security, loss of management controls and poor motivation are major risks in outsourcing FM services. This studv concludes that poor accountability and loll' labour productivity are major risk factors that cuts across all FM procurement routes that is capable of affecting employees' relationship and passion for work. Performance reward and regular account reconciliation are therefore recommended since this can either reinforce an outsourcing relationship or enhance an in-house retaining of FM services.
- ItemOpen AccessAssessment of the Correlation between the Quality of Building Materials and Strength of Concrete Members in the Building(International Journal of Applied Engineering Research, 2018-03) Ogunde, Ayodeji, O.; Egbanubi, kehinde, C.; Ameh, John , O.; OPeyemi, JoshuaThe constituents of concrete have a significant amount of influence on the strength of concrete. Consequently, this research work addressed the use of compressive strength test to determine concrete strength. To achieve the aim, experiments were carried out on three different aggregate sizes-19mm, 16mm, and 13.2mm. The results showed the silt percent contained in each tested aggregate, 3% for fine aggregate, 1% for 13.2mm aggregate, and 0.05% for both 16mm and 19mm aggregate size. It also showed the moisture percent contained in the fine aggregate sample was 2.56%, the workability of the tested concrete of mix ratio1: 1 1 2 2 was 0.95, the Impact Value (toughness) of the aggregates; 9.01% for the 13.2mm size, 7.13% for the 16mm, and 7.95% for the 19mm size of aggregate. The compressive strength test showed that the 19mm size aggregate had the highest strength after each seven days. For the test on concrete members (column), Schmidt hammer test was carried out to determine the strength and variation in the workmanship of each tested column. The result of this research work showed that the 19mm aggregate had the most strength; and that the aggregate sizes influence the strength of the concrete. The research also showed that for each concrete member there is high variation in strength due to variation in workmanship. It is recommended that columns should be tested periodically for variation in strength to avoid building collapse.