Master of Science (M.Sc.) Theses and Dissertations

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    Safety and Security in Fulani-Host Communities of Iwo Local Government Area, Osun State, Nigeria
    (Department of Urban And Managemnent, Faculty of Environmental Design And Management,Obafemi Awolowo University, 2024) AMIDU, Amofe Isamotu
    This study examined the socio-economic characteristics of residents in Fulani-host communities of Iwo Local Government Area, Osun State, Nigeria; examined the social, economic and physical characteristics of the study area; examined the safety and security measures in the study area; and examined the residents’ perception of safety and security in the study area. These were with a view to providing information to promote harmonious and peaceful coexistence of the people in Fulani-host communities of Iwo.
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    Durability characteristics of plantain pseudo-stem fibre concrete exposed to sulphate environment
    (Department of Building, Obafemi Awolowo University., 2025) Abdullahi, Adeyemi Lawal
    This study investigated the effect of plantain pseudo-stem fibre concrete on the compressive strength, tensile strength and water absorption of concrete exposed to sulphate environment. These were with a view to assessing the suitability of plantain pseudo-stem fibre as a potential additional construction material to improve concrete durability, particularly under exposure to sulphate environment. Preliminary tests including particle size determination and specific gravity were carried out on samples of the research materials according to BS EN9331:1997, BS EN1097-6:2000 respectively. The plantain pseudo-stem fibre was extracted from plantain stem after the fruit was cut off and was soaked in water and fibre was extracted manually by wooden surface and mallet and then sundried. They were chopped into uniform sizes and the nominal proportion of concrete ingredients of 1:2:4 (cement:sand:granite) was adopted and mixed with plantain pseudo-stem fibres at 1%, 2%, 3% and 4% weight of cement and 100 x 100 mm cubes were produced and cured up to 28 days. Compressive, tensile and water absorption were measured at 3, 7, 14 and 28 days according to BS EN 12390:2003 concrete at 28 days and at 1 and 2% exposed to MgSO4. Data obtained was analysed using graphical illustrations, means, percentages, regression analysis and Analysis of Variance. The results showed that the compressive strength of concrete containing plantain pseudo-stem fibre increased with increase in plantain pseudo-stem fibre content at 1% and 2% but decreased when exposed to aggressive sulphate of MgSO4 at 3% to 4% weight of cement, and the compressive strength was decreased at 2% percentage of PPF compare to unreinforced sample. At 3 days curing ages and at 2% MgSO4 exposure, the compressive strength at 0% and 1% PPF were 8.69 N/mm2 and 9.42 N/mm2 as against that of unreinforced sample of 8.93 N/mm2 while the concrete mixes with 3% and 4% were 7.82 N/mm2 and 6.99 N/mm2, at 7 to 28 days there was decrease in compressive strength at 1% to 4% PPF content and at 1% and 2% MgSO4 xiii exposure compared to unexposed sample. The tensile strength of specimen at 3days exposure and at 1% and 4% content, the concrete specimens suffered a loss of 4.95% and 58.91% in 2% MgSO4 concentration respectively. At 7days exposure, the same specimen experienced a loss of 7.76% and 80.58% in 2% MgSO4 concentration respectively compared to specimen stored in water. Also, the water absorption increased for all the percentage of PPF content and for all the MgSO4 concentration solution, whereas at 7days exposure, the specimen experienced a higher of 4.02% and 3.42% in 2% concentration respectively. The study concluded that there was reduction in durability of plantain pseudo-stem fibre concrete when exposed to magnesium sulphate at 1% and 2% concentration.
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    Open Access
    Assessment of the usage of software packages by quantity surveying firms in southwestern in Nigeria.
    (Department of Quantity Surveying, Faculty of Environmental Design and Management. Obafemi Awolowo University., 2021) OLALEKAN, Yunus Olaitan.
    This study identified and examined the software packages used by Quantity Surveying firms in Southwestern Nigeria; evaluated the trend in the usage of software packages in the study area; assessed the drivers and barriers of usage of the software packages; and examined the impact of their usage on service delivery in the study area. These were with a view to enhancing service delivery. Quantitative survey research design was used to collect primary data for this study via structured closed ended questionnaire. The questionnaire was administered on quantity surveying firms in Lagos, Ondo and Oyo States which constituted the study population. Total enumeration was used for Ondo and Oyo States with six (6) and 15 (fifteen) quantity surveying firms, respectively. Out of the 127 quantity surveying firms in Lagos State, 64 (50%) were sampled using simple random sampling technique. Data were obtained on educational status, professional status, employment position, years of experience, age of firms, firm’s location, type of software used, level of usage of software packages, trend in the usage of software packages, drivers and barriers of the usage of software packages and impact of the usage of software packages on service delivery. The data collected were analysed using descriptive (frequency counts, percentages, and mean score) and inferential (regression analysis and Analysis of Variance) statistics. The results showed that AutoCAD with mean score (MS) of 2.8 in a 5-point Likert-like scale (0-4) was the most used software package by quantity surveying firms in the study area. The others were Microsoft Project (MS = 2.44), MasterBill (MS = 1.58), QSCAD (MS = 1.51) and Revit (MS = 1.37). The trend in the usage of software packages by the firms was most erratic (up and down patterns) in Ondo and Oyo States but relatively regular in Lagos State. It was also found that the five lead drivers of the usage of software packages were: changing trend in technology (MS = 3.56); flexibility of usage (MS = 3.22); corporate technology strategy (MS = 3.10); competition among QSFs (MS = 3.08); and competition among construction professionals (MS = 3.07). Similarly, the top five barriers to the usage of software packages were high cost of software packages (MS = 3.42); inadequate power supply (MS = 3.20); high cost of hardware (MS = 3.17); rate of virus attack (MS = 3.07); and inadequate job order to encourage software investment (MS = 2.92). The study also found that the usage of software packages has mostly impacted the preparation of bills of quantities with a mean score (MS) of 3.53, closely followed by project planning (MS = 3.51), estimating (MS = 3.47), cost planning (MS = 3.36) and cost analysis (MS = 3.24). The study concluded that the usage of software packages by quantity surveying firms in the study area was generally low and that high cost of software packages and inadequate power supply were mostly responsible for the low usage of software packages by quantity surveying firms in Southwestern Nigeria with consequent negative impact on service delivery.
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    Open Access
    Impact of project governance on the performance of public private partnership projects in Lagos State, Nigeria.
    (Department of Building, Faculty of Environmental Design and Management. Obafemi Awolowo University., 2022) OLADELE, Tosin Emmanuel
    This study examined the governance structure, and evaluated the critical success factors of Public Private Partnership (PPP) projects in Lagos State, Nigeria. It also examined the challenges of the PPP projects governance and the effect of governance structure on the cost and time profiles of the PPP projects in the study area. These were with a view to enhancing projects delivery. The study made use of both primary and secondary sources of data. For the primary source of data, interviews were conducted with the key stakeholders/role players and questionnaire were administered on the professionals that were involved in the identified case studies. The secondary data were sourced from relevant departments of government, and from the concessionaires of the identified PPP Projects in the study area. Seven (7) completed PPP projects were used as case studies. A total of one hundred and twenty (120) professionals were sampled, which included sixteen (16) professionals from five (5) case study projects and twenty (20) professionals from two (2) case study projects. One hundred and twenty (120) questionnaire were purposively administered on the professionals, while 81 questionnaire were successfully retrieved, indicating a 68% effective return rate. The data obtained were analysed using Relative Importance Index (RII), Thematic Analysis, Importance Index IMPI), Severity Index (SI), and Cost and time Overrun Equations. The results showed that two forms of governance structures namely: departmental structures and new separate authority, were mostly adopted in the case study projects. However, lack of institutional frameworks for PPP during its early adoption in the study area resulted in the use of traditional procurement contracts in some case study projects, which lacked PPP contents. The result also showed that project accountability and responsibility (Mean Index = 0.82) was the most practiced project governance principle for PPP projects. Disclosure and Reporting (Mean Index = 0.70) was least practiced as it had the least mean index value. The major Critical Success Factors (CSFs) of PPP projects were, Knowing the project (IMPI% = 79.61); information and communication (IMPI% = 77.41); the support of principal officers (IMPI% = 76.91); capable project team (IMPI% = 72.33); value for money (IMPI% = 71.08); and strong dedication by public and private actors (IMPI% = 70.84). The Severity Index (SI) of the challenges of the PPP projects governance showed that the major governance challenges were Lack of capacity on the part of the concessionaire (SI% = 85.68); costly transactions (SI% = 85.18); high procurement costs (SI% = 84.45); fraud and bribery (SI% = 83.70); high project budgets and long execution periods (SI% = 83.45); and uncertainty of political environment (SI% = 83.21). The results showed that the adopted governance structures in most of the case studies caused delays on the projects. The study concluded that, the unavailability of institutional frameworks for PPP during the early adoption of PPP in the study area resulted in different forms of governance structures (Policies) for PPP projects and confirmed that the governance structures of most of the PPP projects caused delays, which significantly had adverse effects on PPP project deliverables.
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    Open Access
    A documentation of styles in yoruba headites.
    (Department of Fine and Applied Arts, Faculty of Enivironmental Design and Management, Obafemi Awolowo University., 2021) FAJOBI, Janet Adeola
    This project document a visual representation of styles in Yoruba headties. This project is focused on the use of coloured wools stitches as embroidery techniques with gluing and sewing of fabrics on canvas to make a visual representation of gele styles in the 1980’s, 1990’s and the contemporary time. Data for this project was collected from both primary and secondary sources. Primary data was oral interviews with the Yorùbá elders about how headties were been tied in the 80’s, 19’s and now. The secondary source include project works of other people, internet publications, magazines, pictorial images online and journals. The process of executing this project includes: source for references, generating canvas size, sketching, stitching on the sketches image with different colour of thread, cutting of aso-oke to form the gele styles for each works, re-stretching and framing. The findings revealed that the Yorùbá indigenous hairstyles vary based on their importance and usefulness. These headties sometimes shows the importance of the wearer and it shows that has time evolves people explore different ways in which gele can be tied. Findings also showed that the headties are gradually taking new form day by day as western influence have been included to the styling of these headties. In conclusion, this project has been executed to form a visual reminder for the present generation and a historical record for generation to come. It also serves as a visual record of how gele has been presented in the past and how it has evolved till date. In a nutshell, this project, revives and retains the quality of Yoruba dress culture.