Feyisetan Leo-Olagbaye’s research while affiliated with University of Ibadan and other places

Purpose Recognizing the importance of sustainable development, environmental economic practices have gained significant attention globally as effective measures to mitigate environmental degradation and promote resource conservation. Therefore this study identifies and evaluates the barriers hindering the implementation of environmental economic practices in the Nigerian construction industry. Design/methodology/approach A quantitative research approach, utilizing a well-structured questionnaire, was employed to collect data from construction professionals. The Shapiro-Wilk normality test was utilized to assess the normality of the data, while the Kruskal-Wallis H-test was employed to investigate potential significant differences in opinions among various categories of respondents. Subsequently, exploratory factor analysis was conducted to identify underlying patterns and relationships within the collected data. Findings The top five barriers were: prioritization of short-term financial gain over long-term benefits, inefficient and unreliable energy supply systems, inadequate disposal and management of waste, insufficient funding and investment and high costs associated with sustainable construction practices. Furthermore, four critical clusters of barriers were revealed, which are regulatory-related, financial and economic-related, technical and logistical-related and knowledge-related. Practical implications These clusters can guide policymakers, industry professionals and educators in developing tailored strategies to overcome barriers within each specific category, fostering a more holistic and effective approach toward sustainable practices in the construction sector. Originality/value The findings of this study were compared with results from similar cases in Iran, China and New Zealand to provide a cross-cultural perspective on challenges faced by different regions. This comparative analysis aims to identify both commonalities and unique factors, contributing to a much deeper understanding of sustainable construction practices on a global scale.

Purpose-The purpose of this study is to identify and evaluate the primary constraints that quantity surveying firms in Nigeria encounter while integrating indoor environmental quality (IEQ) principles into building designs. Design/methodology/approach-The study used a quantitative approach by administering a well-structured questionnaire to 114 quantity surveyors. The collected data were analyzed using methods such as frequencies, percentages, mean item scores, Kruskal-Wallis test and exploratory factor analysis. Findings-The top five ranked constraints were limited access to funding or financing options, limited availability of green materials, limited availability of insurance for sustainable buildings, limited availability of sustainable design resources and limited diversity and inclusivity within the design profession. Based on Indoor environmental quality the factor analysis, the study identified six clusters of constraints: structural-related constraints, technical-related constraints, financial-related constraints, capacity-related constraints, legal-related constraints and culture-related constraints. Practical implications-This study has several practical implications for quantity surveying firms, policymakers and industry stakeholders involved in building design and construction in Nigeria. The findings of this study can also inform future research on the integration of IEQ principles into building designs. Originality/value-By identifying and structuring the clusters of constraints faced by quantity surveying firms in Nigeria when implementing IEQ principles, this study provides a novel approach to understanding the challenges associated with IEQ implementation in the building sector. This understanding can guide policymakers, industry stakeholders and quantity surveying firms in developing effective strategies to overcome these constraints and promote IEQ principles in building design and construction.

Purpose Global construction sector studies have significantly explored the impact of automation techniques, revealing their transformative potential. However, research on their application within specific local contexts, especially in developing countries like Nigeria, is sparse. Nigeria presents a unique context marked by challenges such as skilled labor shortage, safety concerns and cost efficiency. Therefore, investigating the implementation of automation techniques in the Nigerian construction industry is crucial to address these challenges, bring transformative advancements and contribute to a more balanced global discourse on automation adoption. This study aims to fill this significant research gap. Design/methodology/approach A mixed research method was deployed which combined both qualitative and quantitative data collection and analysis. Two focus group discussions conducted with 23 experts from both industry and academic institutions (qualitative) yielded 17 drivers which were used to formulate a well-structured questionnaire (quantitative), which was disseminated to construction professionals. Collected data underwent analysis through various statistical techniques, including percentages, frequencies, mean item scores and exploratory factor analysis. Findings Principal component analysis (PCA) yielded four driver clusters namely: (1) performance-related drivers, (2) visualization and efficiency-related drivers, (3) technological and human-related drivers and (4) economic-related drivers. Practical implications The study provides empirical insights that can aid stakeholders, decision-makers, policymakers and the government in formulating strategies to promote automation techniques in the Nigerian construction industry and beyond. Originality/value This study's originality lies in its exploration of the untapped potential of automation techniques in the Nigerian construction industry, offering novel perspectives on how these technologies can address specific challenges such as skilled labor shortage, safety concerns and cost efficiency, thereby paving the way for transformative advancements in the sector.

The role stakeholders play is fundamental to the realisation of sustainable development. Consequentially, there is a need for the major stakeholders to be fully aware of their respective roles. Thus, this paper focused on assessing the stakeholders’ roles in sustainable housing projects in Lagos State, Nigeria. A structured questionnaire survey was used to collect data from 259 stakeholders involved in sustainable housing projects in Lagos State, Nigeria. A total of 203 responses were obtained, representing a 78% response rate. Primary data regarding the extent of stakeholders’ awareness of their roles in sustainable housing were collected. The data collected were analysed using mean ranking analysis and analysis of variance (ANOVA). The data collected were used to determine the extent of awareness of the stakeholders’ role in sustainable housing projects in Lagos State, Nigeria. The results showed that all the stakeholders were aware of their respective roles in the delivery of sustainable housing projects and were highly conscious of them. Although their extent of awareness was at varying levels, there was no statistically significant difference of opinions amongst the different categories of stakeholders in the delivery of sustainable housing projects. The study concluded that Government and Project Managers have key roles to play as major stakeholders in the delivery of sustainable housing projects. The knowledge of the awareness of stakeholders’ roles in the delivery of sustainable housing projects provides invaluable information to stakeholders regarding the important roles to focus attention on in achieving sustainable housing projects. The study provides a veritable basis for understanding and aligning stakeholder roles in sustainable housing project delivery ist.

The role stakeholders play is fundamental to the realisation of sustainable development. Con-sequentially, there is need for the major stakeholders to be fully aware of their respective roles. Thus, this paper focused on assessing the Stakeholders roles in sustainable housing projects in Lagos State, Nigeria. Structured questionnaire survey was used to collect data from 259 stake-holders involved in sustainable housing projects in Lagos State, Nigeria. A total of 203 responses were obtained, representing 78% response rate. Primary data regarding the extent of stakeholders awareness of their roles in sustainable housing were collected. The data collected were analysed using mean ranking analysis and analysis of variance (ANOVA). The data collected were used to determine the extent of awareness of the stakeholders’ role in sustainable housing pro-jects in Lagos State, Nigeria. The results showed that all the stakeholders were aware of their respective roles in the delivery of sustainable housing projects and were highly conscious of them. Although their extent of awareness was at varying levels, there was no statistically significant difference of opinions amongst the different categories of stakeholders in the delivery of sustainable housing projects. The study concluded that Government and Project Managers have key roles to play as major stakeholders in the delivery of sustainable housing projects. The knowledge of the awareness of stakeholders’ roles in the delivery of sustainable housing project provides invaluable information to stakeholders regarding the important roles to focus attention on in achieving sustainable housing projects. The study provides a veritable basis for assessment of sustainable housing project in Lagos State, Nigeria.

Purpose Practitioners have reported a minimal and non-use of building information modelling (BIM), especially in small and medium-sized organisations and BIM infant construction industries. This development calls for a reappraisal of organisations’ strength in capabilities required for BIM uptake towards the target of global construction digitalisation. This study aims to assess the BIM Level 2 uptake capability of organisations in a BIM infant construction industry and identify the underlying interactions between the capability criteria. Design/methodology/approach The study used a multivariable analysis of fifteen descriptors identified from the people, process, policy, finance and technology domain. Data collection was done in the BIM infant construction industry in Nigeria. Verification of the descriptors and an evaluation of BIM uptake capability in organisations was done. Seventy-three responses were received within the selected context, and data analysis was done with mean weighting and exploratory factor analysis. Maximum Likelihood extraction and Direct Oblimin rotation were used. Findings Factor analysis revealed three factors that explained 53.28% of the total variance in the BIM Level 2 uptake capability of construction organisations. The factors are workforce capacity and continuous development, an affinity for innovation and strength in physical and operational facilities. Research limitations/implications This study provides an overarching and insightful discussion on BIM uptake capability and construction digitalisation with evidence from a BIM-infant construction industry. Practical implications The findings of this study are a piece of valuable empirical evidence on Level 2 BIM uptake capability. This empirical situation analysis will inform the advocacy for the advancement of BIM and enhanced utilisation of building information. Evidence on the capability performance of the BIM infant industry has been revealed. Originality/value The outcome is expected to stir debate on the preparedness of organisations to further exploit the benefits of BIM in the BIM infant construction industry. Examination of the capability for a particular phase of BIM is scanty in the literature.