Faculty of Environmental Design and Management

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    Open Access
    Recreational Potentials of forest reserves in Nigerian a case study of eleyele forest reserve in Ibadan Oyo state, Nigeria.
    (Department of Urban and Regional Planning, Faculty of Achictecture, Obafemi Awolowo University., 1989) Ibitoye Temitope Olufemi
    Most Nigeria towns are short of recreational open space despite express demand and rising leisure pursuits by urban dwellers. In view of this, it is necessary to make a realistic assessment of how potential recreation resources can be developed for optional use. The use of forest reserves for recreation pursuits is one of the ways of relieving urban area in Nigeria which are grossly deficient in recreational forest reserves. There is evidence that urban dwellers informally use existing forest reserves for recreational purpose, especially those within reach of urban populace. To this end, this study examines the rationale and potentials of developing forest reserves to provide for recreational needs of urban dwellers in Nigeria with a case study of Eleyele forest reserve in Ibadan, Oyo Stste
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    An evaluation of the maintence management of the staff housing estates of selected first generation Universities in Southwestern Nigeria.
    (Department of Building Technology, Obafemi Awolowo University, 2005) OLADAPO, Adebayo Akanbi
    The study investigated the maintenance management practice in three university staff housing in South-western Nigeria with a view to examining the relationship between the maintenance system and the quality of the housing stocks in the universities studied. The study concluded that the control of the determinants of maintenance needs and causes of decay significantly affected maintenance performance. Employee satisfaction, the maintenance departments' responsiveness to tenants' complaints and the maintenance backlog were critical in the performance evaluation of the maintenance departments.
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    Durability Characteristics of Kernelrazzo Floor Finish
    (Department of Building Obafemi Awolowo University, 2015) OBADJE Olusegun Oladimeji
    The study examined the resistance, water absorption characteristics, abrasion resistance. impact resistance and the development of durability framework of kernelrazzo floor finish exposed to MgSO4 and HCI solutions. This was with a view to determining the performance of kernelrazzo .
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    An Evaluation of the impact of communal conflicts on the physical development of settlements in southwestern Nigeria.
    (Department of Urban and Religional planning, Faculty of Environmental Design Management, Obafemi Awolowo University, 2020) Abegunde, Albeert Ayorinde
    The study identified and examined causes of communal conflicts (CC), appraised the spatial dimension and their effects on pattern of physical development in Southwestern Nigeria
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    Performance evaluation of lighting retrofitting in lecture halls of Obafemi Awolowo University, Ile-Ife, Nigeria.
    (Department of building, Faculty of environmental design and management, Obafemi Awolowo University., 2021) ADELEKE Jacob Sola
    This study examined the lighting energy consumption pattern of the existing fluorescent lamps; assessed the impact of retrofitting using compact fluorescent lamps (CFLs) and light emitting diode (LED) lamps on the consumption pattern; determined the payback period on investment made when retrofitting lighting with the two energy efficient lamps. These were with a view to providing information on the potential benefit of retrofitting lighting systems with energy efficient lamps in selected lecture halls in Obafemi Awolowo University, IleIfe. Data for this research work were obtained using quantitative approach by carrying out simulation on three selected lecture halls which was based on purposive sampling techniques. An energy monitor was used for the measurement of energy consumption at periodic logins of 1hr, 3hrs, 6hrs, 12hrs, 1day, 7days, 1 month and 3 months. Data collected were presented and analysed using frequency distributions, Mann-Whitney and Bartlett’s test, Pearsons’ correlation, simple percentages and standard payback equations The results showed that the energy consumption values of existing fluorescent lamp across the simulated Agriculture Lecture Theatre, Oduduwa Lecture Theatre and Science Lecture Theatre increased consistently based on the numbers of lighting points. The values increased from 0.3211 to 681.576 (ATL), 0.7600 to 1619.4600 (ODLT) and 2.6262 to 5652.4321 (SLT) in 1 hour to 3 months, respectively. The comparative analysis of the energy consumption of the three lamps showed that retrofitting fluorescent lamp with compact fluorescent lamp and light emitting diode lamp reduced energy consumption from 229.096 to 129.101 and 96.396 in 1 month; from 681.576 to 387.302 and 274.188 in 3 months (ATL); from 531.130 to 216.243 and 142.536 in 1 month; from 1619.466 to 692.479 and 426.608 in 3 months (ODLT); from 1840.846 to 657.243 and 500.167 in 1 month; from 5652.432 to 1936.600 and 1499.015 (SLT) in 3 months respectively. The findings also revealed that a wide margin exists between the energy consumption of existing fluorescent lamp with that of compact fluorescent lamp and light emitting diode lamp but a very small margin exists between compact fluorescent lamp and light emitting diode lamp. The percentage energy savings across the three lecture halls also showed that there were significant differences between the electricity consumption before and after simulation of the as-built lamps with 43, 47 and 65% reduction in electricity consumption using compact fluorescent lamp and 57, 73 and 73% using light emitting diode lamp. The Pearsons’ correlation values across the three selected lecture halls were also found to be 1.000, which indicates a very strong positive correlation. The 2-tailed significant value of p < 0.05, which implies that the correlation is highly significant. The results of the retrofits payback period also showed that the compact fluorescent lamp performed better in the return of retrofits investments having a payback period of 7 months, 4 months and 5 months than that of the light emitting diode lamp having a higher payback period of 10 months, 6 months, and 8 months respectively across the three lecture halls. The study concluded that replacing fluorescent lamp with compact fluorescent lamp and light emitting diode lamp would be a feasible option in order to enhance optimal performance of the lecture halls, but in terms of viability, it would be beneficial to retrofit fluorescent lamp with compact fluorescent lamp.
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    Assessment of Polyethylene Terephthalate Waste Carbon and Periwinkle Shells-Based Chitosan as Adsorbent for Trichloroacetic Acid removal from Water.
    (Institute of Environmental Control Management, Obafemi Awolowo University., 2022) ABIOYE Babasanmi Oluwole
    The study determined the physicochemical parameters and trichloroacetic acid concentrations of the water samples before and after conventional treatment at the Obafemi Awolowo University, Ile-Ife water treatment plant. It also investigated the adsorption efficiencies of chitosan modified and unmodified adsorbent prepared from polyethylene teraphthalate waste and periwinkle shells for the removal of trichloroacetic acids in the water samples.
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    Building information modeling usage and project stages interface among construction professionals in Lagos State, Nigeria.
    (Department of Building , Faculty of Enviromental Design and Management, Obafemi Awolowo University., 2022) ADEFEMI , Adebowale Oluwayinka
    The study examined the extent of building information modeling (BIM) usage among construction professionals, determined the interface problems in construction projects stages among professionals and investigated the impact of BIM usage on professional's at stages of construction projects in Lagos State, Nigeria. These were with a view to providing information that could enhance project delivery.
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    The Choice of Building Materials for Housing by Low-Income People in Suburban Ota, Ogun State, Nigeria.
    (Department of Architecture, Faculty of Architecture Obafemi Awolowo University., 2022) ALAGBE Oladoyin Taiye
    The study examined the socio-economics income people in suburban Ota, furthermore, this study examined building material choices for construction made by low income people and analysed the factors that affect the low income people's choice of building materials in the study area; with a view to informing low income housing technology policy formulation in similar contexts.
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    The choice of building materials for housing by low-income people in suburban ota, Ogun State, Nigeria.
    (Department of Architecture, Faculty of Environmental Design and Managemnet, Obafemi Awolowo University, Ile-Ife,Nigeria., 2022) ALAGBE, Oladoyin Taiye
    The study examined the socio-economics income people in suburban Ota, furthermore, this study examined building material choices for construction made by low income people and analysed the factors that affect low income people's choice of building materials in the study area: with a view to informing low income housing technology policy formulation in similar contexts.
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    THE CHOICE OF BUILDINGN MATERIALS FOR HOUSING BY LOW-INCOME PEOPLE IN SUBURBAN OTA, OGUN STATE, NIGERIA
    (DEPARETMENT OF ARCHITECTURE, FACULTY OF ENVIRONMENTAL DESIGN AND MANAGEMENT, OBAFEMI AWOLOWO UNIVERSITY., 2022) ALAGBE OLADOYIN TAIYE
    THE STUDY EXAMINED THE SOCIO-ECONOMS INCOME PEOPLE IN SUBURBAN OTA . FURTHERMORE, THIS STUDY EXAMINED BUILDING MATERIAL CHOICS FOR CONSTRUCTION MADE BY LOW INCOME PEOPLE AND ANALYSED THE FACTORS THAT AFFECT LOW INCOME PEOPLE'CHOICE OF BUILDING MATERIALS IN THE STUDY AREA WITH A VIEW TO INFORMING LOW INCOME HOUSING TECHNOLOFY POLICY FORMULATION IN SIMILAR CONTEXTS
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    Building Information Modelling Usage And Project Stages Interface Among Construction Professionals In Lagos State, Nigeria
    (Faculty of Environmental Design and Management, Obafemi Awolowo University., 2022) ADEFEMI, Adebowale Oluwayinka
    This study examined the extent of building information modelling (BIM) usage among construction professionals, determined the interface problems in construction project stages among professionals and investigated the impact of BIM usage on professional’s interface at stages of construction projects in Lagos State, Nigeria. These were with a view to providing information that could enhance project delivery.
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    BUILDING INFORMATION MODELING USAGE AND PROJECT STAGES INTERFACE AMONG CONSTRUCTION PROFESSIONALS IN LAGOS STATE, NIGERIA
    (DEPARTMENT OF BUILDING, FACULTY OF ENVIRONMENTAL DESIGN AND MANAGEMENT, OBAFEMI AWOLOWO UNIVERSITY, 2022) ADEBOWALE OLUWAYINKA ADEFEMI
    This study examined the extent of building information modelling (BIM) usage among construction professionals, determined the interface problems in construction project stages among professionals and investigated the impact of BIM usage on professional’s interface at stages of construction projects in Lagos State, Nigeria. These were with a view to providing information that could enhance project delivery. Primary data were used for this study and obtained through structured questionnaire. The target population was construction professionals who had substantial knowledge of BIM usage and who had experienced interface problems at the design and construction stages of projects in Lagos State. A total of two hundred and sixty (260) copies of completed questionnaire were retrieved through online and physical administration using snowball sampling technique for selection of respondents. Data were analysed using frequency, percentages, exploratory factor analysis, confirmatory factor analysis and structural equation modelling. Findings revealed that more than 70% of the respondents had less than six years’ experience with BIM usage, 36.5% of the respondents had employed BIM for private projects, 48.5% for public-private projects and majority of the construction professionals use BIM mostly for building projects (90%) and design-build procurement method (57.2%). Over 60% of construction professionals had either very low, low or fair level of competency in respect of BIM usage. On the proficiency level of BIM usage, about 86.5% among the professional members were either skilled or semi-skilled. The overall satisfaction level in using BIM for project work was 74.2% among the project members which shows that a majority of them were satisfied with BIM usage. The major interface problems at the design stage in the study are badly written contract (C15); excessive amendments when changes occur in designs (C16) (DIP5=0.794); lack of stipulated data (C4) (DIP1=0.744); and design complexity (C9) (DIP4=0.743). However, the major interface problems at the construction stage are change order (C29) (CIP4=0.814); inadequate specialised quality-control team (C31) (CIP1=0.798); and poor quality of construction (C21) (CIP2=0.797). The impact of BIM on professionals’ interface at the design stage are producing tools for reporting task completion, quality value and mistakes of the design team (ID5) (IDS1=0.836); automatic low-level of amendments whenever modification occurs in design (ID14) (IDS2=0.794); and improve design quality (ID8) (IDS3=0.771). The impact at the construction stage includes enhanced site utilisation, space coordination and production data (IC4) (ICS3=0.788); enhanced quality control process on site (IC9) (ICS1=0.787); and minimised interface conflict through integration of construction simulation (IC18) (ICS2=0.774).
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    A study of Mentoring in Real Estate Practice in Northwestern Nigeria
    (Department of Estate Managment, Falculty of Environment Design and Management, Obafemi Awolowo University Ile-Ife Nigeria, 2023) ISHAYA, David Ayock
    This study examined the profiles of estate surveying and valuation (ESV) firms in Northwestern Nigeria as well as the skills and competencies lacking of employees in ESV firms in the study area; assessed the mentoring strategies employed by ESV firms in the study area; analysed the effectiveness of the mentoring strategies; and determined the factors influencing the effectiveness of the mentoring strategies employed by the ESV firms in the study area. These were with a view to providing information that could enhance real estate practice. Primary data was employed for the study. The data was obtained from ESV firms practicing in Kano and Kaduna states using a mixed research method involving the use of questionnaires and interviews. A total enumeration survey was carried out on all the 40 and 80 ESV firms in Kano and Kaduna states respectively. Interviews were conducted with three senior surveyors in Kano and seven in Kaduna states. Data collected from the ESV firms included their profiles, mentoring strategies, employee skills and competencies and factors influencing mentoring effectiveness. The information obtained were analysed using frequency and percentage, mean rating, standard deviation, Analysis of Variance (ANOVA), independent t-test, and Principal Component Analysis. The findings showed that the employees were mostly HND holders (47.01%), while 98% of the respondents were male. More so, majority of the respondents held senior managerial positions with 21% and 84% being Head of Departments Kaduna and Kano states respectively. The results further showed that based on a 5-point Likert scale, risk-taking propensity (MS = 3.64) is the most ranked skills and competencies lacking among employees in ESV firms. Traditional mentoring with response frequency of 88.6% and 92.0 % in Kaduna and Kano states respectively was found as the predominant form of mentoring adopted by ESV firms in the study area. The mentoring strategies adopted by ESV firms xi, xii differed. In Kaduna State, the most commonly employed strategies were encouragement, feedback and participation with mean scores of 2.96, 1.64 and 3.25 respectively; whereas in Kano State, the most used mentoring strategy was conversation (MS = 4.78). With mean scores of 4.74, 4.70, 4.48, 4.30, and 4.17, building trust, emotional support, orientation, experience sharing, and encouragement respectively were the most effective forms of mentoring strategies employed by ESV firms in the study area. Using principal component analysis, the major determinants of the effectiveness of mentoring by the ESV firms are cultural beliefs, individual traits, and the gender of both mentors and mentees with mean scores of 3.26, 3.69 and 2.78 respectively. The study concluded that mentoring in real estate practice in the study areas is not formalized and that its effectiveness is greatly influenced by cultural beliefs, individual traits, and gender factors.
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    Residents's Place Attachment and Landuse Regulation Compliance in the Federal Capital Territory, Nigeria
    (Department of Urban and regional planning, Faculty of Environmental Design, Obafemi Awolowo University, 2023) AJAYI, Oyetunde Maryalice
    This study identified and appraised landuse control mechanisms in the Federal Capital Territory, Nigeria; examined the socio-economic characteristics of residents; examined the level of residents’ place attachment; evaluated the residents’ level of compliance with landuse regulation; and determined the relationship between residents’ place attachment and compliance with landuse regulation. These were with a view to evolving people-oriented physical planning regulation policies.
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    A Study of Green Building Rating Systems in Lagos state, Nigeria
    (Department of Building, Faculty of Enviromental Design and Management, Obafemi Awolowo University, Ile-Ife, Nigeria., 2023) OLAOYE, Folawiyo Timilehin
    The study examined the Green Building Rating System (GBRS) in use for building projects in Lagos State, Nigeria and their strengths and weaknesses; assessed the importance of the criteria for adapting the Green Building Rating Systems in use; and developed a weighting framework of the criteria for improving the Green Building Rating Systems. These were with a view to enhancing the applicability of the rating systems. The data for the study were collected from primary and secondary sources. Primary data on the rating systems in use, their strengths and weaknesses, their criteria of assessment, and the required criteria for enhancing their applicability to the Nigerian local context were collected during one-on-one interviews conducted on green building experts that were identified from twelve (12) certified green building projects in the study area. A total of eighteen (18) green building experts were invited for interview, and thirteen (13) of them took part in the interview, indicating a 72.2% effective response rate. Secondary data including the criteria checklist of the certification systems which were sourced from their official websites and hand-books, were used to refine and substantiate the primary data. The data obtained were analysed using Thematic analysis, Priority ranking and Fraction Method. The results showed that the most prevalent GBRS in use in the study area were EDGE and LEED. The results further showed the categories used for assessing and certifying buildings in each certification system; the certification process in each certification system; and the building projects that they had certified in the study area. Findings on the strengths and the limitations of the LEED and EDGE certification systems with respect to the local conditions of the study area, showed the major strength of the LEED and EDGE to be used to assess and certify various building types including residential buildings, commercial spaces, and industrial buildings. Both 15 the LEED and EDGE performed well in all the phases of the building project (design, construction, operation and end of life). The only significant limitation in the adoption of the EDGE and LEED was their lack of functionality in the social aspects of sustainability in buildings. The result further revealed the important criteria for adapting the EDGE and LEED to the local context of the study area to include energy efficiency, water efficiency, waste management, pollution and emission and climate and resilience to environmental hazards. The study developed a weighting framework and flowchart representation of the criteria to be considered by the green building experts to enhance the applicability of the rating systems. The study concluded that the EDGE and LEED were sufficient for assessing the environmental aspect of sustainable buildings, but less functional with respect to safety and security, socio-cultural aspects, and Life-cycle cost efficiency.
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    Tenants' choice of residential properties in Ibadan municipality, Nigeria.
    (Department of Estate Management, Faculty of Environmental Design and Management, Obafemi Awolowo University., 2023) Oshikoya, Taiwo Peter.
    The study examined the socio-economic characteristics of the tenants in Ibadan metropolis, the characteristics of residential properties, identified the tenants’ choice of residential properties and determined the factors influencing tenants’ choices of residential properties in Ibadan municipality. These were with the view to providing relevant information that enhances the investment decisions of real estate investors. Primary data were collected for the study. Question was used to elicit data from household head of the low residential neighborhood (Idi-ishin, Alalubosa) and medium density (Oluyole, Bodija) in Ibadan municipality. These represent a total number of 6,528 housing units and multistage sampling was adopted in selecting 5% of the residential buildings. A total of 326 residential buildings were selected from which a household head was selected each for questionnaire administration. The data collected entails the socio-economic characteristics, characteristics, of the residential property and factors influencing their choice of residential property. The study adopts techniques such as frequency distribution and percentages, cross tabulation, chi sqaure and factor analysis. The result shows that the respondents comprise of active population within the age bracket 30-50 with 50.3% were largely female and income level is between #150,000 to #251,000. Further findings reveal that most of the residential properties in low residential densities had well finished 3-bedroom flat and semidetached apartment, while medium density are mostly 2-bedroom flat and 3-bedroom respectively. The study discovered three principal factors (security, tenants’ occupation and distance to place of choice) that influence tenants’ choice of residential property across the two residential densities which are neighborhoods security, facilities and services with a percentage variance of 23.19%. This is followed by socio-economic characteristics of the respondents with a percentage variance of 13.92 and lastly, distance and proximity to places of choice with a percentage variance of 12.50%. The study concludes that investor should take into consideration the three principal factors in their decision to invest in residential property in the study area.
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    Client sophistic in mortage valuation practice in Lagos, Nigeria.
    (Department of Estate Management, Faculty of Enivronmental Design and Management, Obafemi Awolowo University., 2024) OGUNBIYI James Olayinka
    The study examined the profiles of clients and the retained Estate Surveying and Valuation (ESV) firms in Lagos, Nigeria; evaluated the characteristics of mortgage valuations undertaken by the firms; appraised the components and level of client sophistication in mortgage valuation practice; analysed the factors influencing client sophistication in mortgage valuation practice; and examined the perceived influence of client sophistication on mortgage valuation practice in the study area. These were with a view to providing information for enhancing valuation practice. The study adopted primary and secondary data using a mixed-method data collection approach. The study population comprised Deposit Money Banks (DMBs), Asset Management Corporation of Nigeria (AMCON) and Estate Surveying and Valuation (ESV) firms in Lagos, Nigeria. According to the August 26th, 2022 edition of the Central Bank of Nigeria’s List of DMBs, 26 DMBs engage in real estate lending activities. They collectively had 650 ESV firms in their Retainership Lists. Using Frankfort-Nachmias's 1996 sample size formular, a sample size of 243 ESV firms was determined for the study. Thus, nine ESV firms were randomly selected for each of the 26 DMBs and AMCON. Total enumeration survey of the 26 DMBs and head of valuation unit of AMCON was also applied. While primary data was collected with the aid of key informant interviews of the heads of the valuation units of the DMBs and AMCON, questionnaire was administered on heads of the valuation units of the ESV firms. Secondary data such as guidelines and standards for mortgage valuation practice was sourced from relevant publications. Data analysis was undertaken using thematic analysis, importance assessment approach, exploratory factor analysis, Spearman’s correlation analysis, and Kruskal-Wallis ‘H’ test.The result, using the importance assessment approach showed that the characteristics of the mortgage valuation practice were: adherence to standard valuation process (RII=0.882), adherence to IVSC and Nigerian Valuation Standards when carrying out valuations (RII=0.855), adoption of International Financial Reporting Standards in valuation practice (RII=0.822), adoption of proper assumptions when carrying out valuations (RII=0.818), and making sound judgements when carrying out valuations (RII=0.818). The result, using the exploratory factor analysis and thematic analysis showed that the components and level of client sophistication in mortgage valuation practice comprised the clients’ knowledge of applicable standards (19.85%), experiential knowledge of valuation characteristics (18.68%); biographical details (13.48%); and the nature of their influence on valuations (11.75%). The factors influencing client sophistication in mortgage valuation practice with their corresponding variance proportion were: issues with valuers and valuation techniques (19.45%); influence of globalization (18.54%); client's knowledge of relevancies (12.76%); regulatory considerations and value for money (10.80%), and valuation uncertainties (8.34%). Moreover, the perceived influence of client sophistication on mortgage valuation practice with their corresponding variance proportion were: encouraged transparency, disclosure and partnership (17.15%); improved accuracy and reliability of valuations (17.04%); improved client satisfaction (16.51%); improved valuation reporting and fee payment (14.91%), and enhanced regulatory enforcements (10.92%). The study concluded that the components of client sophistication, including experiential knowledge of valuation characteristics, compelled ethical behaviour and conduct of practitioners for enhanced valuation practice.