Browsing by Author "Adebiyi, R.T."

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    Awareness of Factors Contributing to Sustainable Construction in Nigeria
    (Penerbit UTM Press., 2020) Amuda-Yusuf, G.; Abdulraheem, M.O.; Raheem, W.M.; Adebiyi, R.T.; Idris, S.; Eluwa, S.E.
    The need to slow down climate change and global warming has made sustainable development major issue among policy makers and world leaders. Awareness on sustainability concept among industry practitioners is crucial in influencing design, materials selection and construction methods. The aim of this study is to examine the level of awareness on key sustainability concepts and factors that influence their adoption during construction by practitioners in Nigeria. Through an online survey, 120 copies of semi-structured questionnaire were administered on built environment practitioners such as architects, engineers, quantity surveyors, and builders working in client, contracting, consulting and academia with 77% response rate. Factorial two-way ANOVA was performed to examine if there are differences in the level of awareness of factors contributing to sustainable construction among the groupings. Also, binomial logit regression analysis was adopted in predicting the factors that significantly influence adoption of sustainability concept among practitioners in construction industry. The study revealed that professionals from client organization recorded highest (3.8) mean score in terms of awareness on sustainability concept followed by those from academia (3.6), consulting (3.0) and contracting (2.2). In terms of factors that significantly influence adoption of sustainability concept during construction, findings from the study revealed that academic qualification (β =2.226, p<0.05) and type of organization (β =1.127, p<0.05) significantly influence adoption of sustainability concept during construction. Practitioners with high academic qualification and those from client organization, exhibited high level of awareness on sustainability concept, this equally influenced their adoption of key elements of sustainability (site planning, energy efficiency, water efficiency, renewable energy, resource conservation, material reuse, indoor environmental quality) during construction. The determination of the level of awareness and adoption of factors contributing to sustainable construction by practitioners will serve as guide to industry practitioners regarding issues to integrate into design and construction project from inception to completion. To improve awareness of sustainable practices in the industry, stakeholders should direct efforts towards organizing seminars, conferences and workshops centered on sustainable construction through the various professional bodies at state and local government levels.
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    Barrier Factors Affecting Adoption of Green Building Technologies in Nigeria
    (UiTM Press, Universiti Teknologi Mara, Selangor, Malaysia, 2020) Amuda-Yusuf, G.; Raheem, W.M.; Adebiyi, R.T.; Abdulraheem, M.O.; Idris, S.; Eluwa, S.E.
    Greenhouse gas emission from activities in the built environment is increasing exponentially due to increase in building operations. This study aims at determining factors that affect adoption of Green Building Technologies that normally reduce greenhouse gas emissions. To elicit relevant information, online structured questionnaire forms were administered on practitioners who have been involved in green building development in Nigeria. Mean score ranking was adopted in ranking the barriers to green building technologies, while discriminant analysis was performed to examine how organizations groups (client, consulting, contracting, academia) were distinguished on the barrier factors identified. Findings revealed that, out of the 23 barrier factors considered in this research, lack of institutions to formulate policies and set guidelines (mean score - 4.5) ranked 1st as barrier to adoption of green building technologies in Nigeria. This is closely followed by lack of information about green products (4.0), low level of awareness about sustainability issues (4.0), human resource and client knowledge, lack of knowledge about green building technologies, high cost of green products, while unavailability of sustainable materials and products ranked the lowest (2.7). Only nine factors at 0.05 level of significance entered the discriminant analysis model and emerged as variables with the most significant power in differentiating the organization groupings on the basis of perceived barriers to adoption of green building technologies. The study recommends that there should be strong political will from government, to establish institutions that formulate policies on green building technologies.
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    EVALUATION OF TRENDS IN RETURNS ON REAL ESTATE INVESTMENT AND INFRASTRUCTURE CONDITIONS INDICES IN ABUJA, NIGERIA
    (University of KwaZulu-Natal : Journal of Inclusive cities and Built environment., 2023-12-18) Adeogun A.S.; Adebiyi, R.T.; Udoekanem, N. B.; Mendie, E. A.; Oladokun, T.T.
    ABSTRACT Functional infrastructure tends to influence returns in the property investment market. This study adopted exploratory research design to evaluate the flow of returns on property investment and infrastructure conditions indices in Abuja between 2012 and 2021. Data were obtained via questionnaire, distributed to real property appraiser firms and residents of the selected neighbourhoods. Random variety technique was adopted to administer the questionnaire to six hundred and eighty two (682) respondents out of which four hundred and eighty five (485) were retuned for the analysis representing a response rate of 71%. Descriptive system of data analysis were used, Coefficient of Variant (COV) and Rank-order relationship representation were also used to evaluate the returns on investment in the selected neighbourhoods of Abuja and to establish the indices of conditions bench mark for least suitable standard conditions of infrastructure. Kendall Coefficient of Concordance was applied to weigh up the relationship between the ranked variables. Analysis revealed higher ideal infrastructure conditions indices in Wuse II and Maitama (ranging from 82%-92% and 81%-94%) contrast with stipulated average at 60%, whereas the condition of infrastructure at Kubwa and Lugbe were discovered to be below the normal standard condition. Kubwa and Lugbe property markets in Abuja performed better than Maitama and Wuse on the basis of risk-return ratio analysis and showed reliable market performance while Maitama and Wuse property markets exhibited opposite. Kubwa and Lugbe real estate markets revealed stable market lower risk range of 8%-36%. It was concludes that, neighbourhood facilities play significant weight in influencing the returns on property investment and this calls for better consideration when taking property investment decision.