Building- Staff Publications

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    Open Access
    AFFORDABLE 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.
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    Open Access
    FACTORS INFLUENCING THE USE OF SUBSTANDARD MATERIALS IN THE CONSTRUCTION OF RESIDENTIAL BUILDINGS
    (CSID Journal of Infrastructure Development, 2020) Faremi, O.J.; Ajayi, O.O.; Faremi, O.E.
    The use of substandard materials for the construction of residential buildings within Lagos metropolis is experiencing a growing concern for both the government and the residents. The construction of half-lived and substandard buildings contributes to negative consequences ranging from rapid deterioration of building elements, premature failures of key building components, and sometimes building collapse. This study attempts to investigate the factors influencing the use of substandard construction materials for the construction of residential buildings in Lagos State. This research collected primary data through a cross-sectional survey of professionals engaged in the construction of buildings and building owners within the study area. Two sets of structured questionnaires were developed and administered to each of the groups of respondents, respectively. The collected data were analysed using descriptive and inferential statistical tools. The results show that factors influencing the use of substandard construction materials for the construction of residential buildings include corruption, use of quacks, contractor’s greed and selfish interests, and client’s financial constraints. The results suggested no significant difference in the perception of contractors and building owners on the factors influencing the use of substandard materials for the construction of residential buildings. The study concludes that the use of substandard building materials for the construction of buildings could cause structural failure, high maintenance costs, incessant building defects, and accelerate deterioration of building elements and components. Building clients suggest to engage professionals and refrain from patronizing quacks.
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    Open Access
    Climatic conditions and the resilience of buildings along Lagos coastline
    (Emerald Publishing Limited, 2021) Faremi, O.J.; Ajayi, O.O.; Zakariyyah, K.I.; Adenuga, O.A.
    Purpose – The study investigates the extent to which defects in coastline buildings are influenced by the climatic conditions within the coastal zones. Design/methodology/approach – The 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. Findings – Saltwater 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 conditions and defects in coastline buildings. Research limitations/implications – The study compliments literature on buildings resilience and maintenance management, and also provides a basis for streamlining future research on coastline buildings. Practical implications – The results provide information on climatic conditions and prevalent defects that should be considered during the design and construction of coastline buildings. The information provided could assist construction stakeholders in improving the resilience of coastline buildings. Originality/value – The study established that coastline buildings are vulnerable to a rapid rate of defect and deterioration which threatens the sustainability of coastline cities. It suggests measures that could improve the resilience of the elements and components of coastline buildings and consequently enhance the safety of life and property, and improve the physical and economic performance of coastline buildings.
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    Open Access
    Defects in prefabricated and in-situ constructed buildings
    (School of the Built Environment and Civil Engineering, Nelson Mandela University, South Africa., 2021-09-12) Edike, U.E.; Faremi, O.J.; Kukoyi, P.O.; Morakinyo, A.
    The problem of housing maintenance has been an inherent issue in Nigeria, with structures getting defective to the point of uncomfortable living and even building collapse. With Nigeria being relatively behind on maintenance practices, the need to acquire and improve knowledge on housing maintenance cannot be overemphasized. This study investigated defects and maintenance challenges associated with prefabricated and in-situ constructed buildings to remedy Nigeria's housing stock. The study was conducted in Ministerial Quarters, Abuja, and the data collection instrument was a structured questionnaire administered to the study area residents on a one-on-one basis. The survey resulted in 64 valid responses. Descriptive statistics and Mann Whitney U Test Rank were used to analyze the data. The study found that both in-situ constructed and prefabricated buildings have some common defects, but the severity varies. Common defects found in both buildings include cracks, fading, and peeling wall paints. The variation in the ranking of defects was demonstrated in all 20 defects presented in the study. However, the variations did not amount to significant differences in the overall occurrence of the defects in both building types. The study recommends that the selection of a generic approach could be adopted in the maintenance of in-situ constructed buildings and prefabricated buildings. Also, a comprehensive approach should be adopted to maintain residential buildings by having an outlined maintenance itinerary for various buildings.
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    Open Access
    Sustainable Facilities Management for Smart Buildings: A Case Study of the Heritage Place, Lagos
    (Lautech Journal of Civil and Environmental Studies, 2021-09-15) Faremi, O.J.; Ajayi, O.O.; Zakariyyah, K.I.; Sotunbo, A.S.
    A recent development within the metropolis of Lagos State, Nigeria is the emergence of smart buildings aimed at providing safer, more secure, productive and comfortable business environment. A major challenge to the sustenance of such edifice is the delivery of strategic facilities management services to maximise the building’s efficiency and achieve expected return on investment. This study investigates sustainable facilities management practices in smart buildings using the Heritage Place as a case study. A cross-sectional survey was conducted on 19 facilities management personnel and 68 users of the facility. chart, mean score and Spearman’s Correlation were used as the descriptive and inferential statistical tools, respectively. The results show the most frequently practiced sustainable facilities management practice to include: compliance to the preventive maintenance schedules for Heating Ventilation and Air Conditioning (HVAC) systems and prompt response to repairs and corrective work activities in the facility with mean scores of 5.00 and 4.90, respectively. The results further show that the facility users were dissatisfied with the level of implementation of sustainable facilities management practices, except in integrated pest management and optimised waste management where marginal satisfaction were recorded, respectively. The study recommends a sustained effort by smart buildings stakeholders at implementing sustainable facilities management practices in order to significantly and continually improve operations and maintenance activities in the buildings. And that the efforts of facilities managers for smart buildings should be geared at the delivery of strategic facilities management services that meet the expectations of users of the facilities.