Programme: Building Technology

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    Assessment of Emergency Response in the Incident of Building Collapse in Selected Location in Lagos State
    (7th International Conference on Science and Sustainable Development and Workshop, 2024) Ojelabi, Rapheal; Oladiran, O. J.; Omuh, I. O.
    The incidence of building collapse is one of the emergency events that requires urgent attention due to the loss of lives that usually accompany its occurrence. The study aims at examining the response time and challenges impacting emergency events like building collapses in Lagos. A questionnaire survey was adopted, and a total of eighty (80) respondents were drawn from construction professionals using cluster and purposive sampling techniques. Sixty-one (61) questionnaires were completed and returned, representing a 76% response rate. The data generated were subjected to descriptive analysis using mean scores and inferential statistical analysis using ANOVA. The findings from the study indicated that 30–120 minutes are rated as the appropriate response time to emergency events like building collapses to forestall the loss of lives. The results also indicate that among the top barriers slowing down emergency response, the incidence of collapse includes poor resources and funding, a complex network of governing bodies, poor road and network issues, and a lack of emergency toll-free lines. The results further revealed that none of the factors limiting emergency response is more significant than the others. Hence, the study recommends that to ensure prompt emergency response to the incidence of building failures in Lagos State, every local government area should have an emergency management office with a well-equipped team. It also recommends that the government should not only provide infrastructural facilities such as a good road network; they should also create emergency routes to aid ease of accessibility in the incidence of emergency events like building collapses. Also, the use of ICT like drones and robotics, among others, should be deployed in managing rescue operations in building collapses.
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    Awareness and Implementation Challenges of the Green Retrofitting in Building Enclosure in the Nigerian Construction Industry
    (7th International Conference on Science and Sustainable Development and Workshop, 2024) Ojelabi, Rapheal; Mohammed, T. A.; Oladiran, O.J.
    This research work aims at examining awareness and implementation challenges of green retrofitting in building enclosures among professionals in the Nigerian construction industry. The study identifies the varying green retrofitting used in building enclosures and investigates its level of awareness and the factors affecting its adoption among professionals in the Nigerian construction industry. The sample was 100 comprising professionals in the construction industry selected randomly using cluster and purposive sampling techniques; and the response was 60%. Data were analyzed using frequency, mean and rank. The findings from the study revealed that out of the 20 green retrofitting used in building enclosures, the construction professionals are more aware of green roofs, high-quality glazing, reflective roofs, energy-efficient windows and doors, and shading device which include louvers. Also, top among the implementation challenges of green retrofitting used in building enclosure among construction professionals include limited knowledge, cost of fixing green retrofitting, skills gap, reluctance to adapt, and poor infrastructure are the major factors. The study recommend that government and professional bodies should sponsor innovative training approaches aimed at addressing skill shortages. This could be in form of schemes such as micro credentials and on-the-job training.
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    Public Private Partnership System Initiation Challenges for the Procurement of Public Infrastructure
    (Covenant Journal of Research in the Built Environment, 2024) Ojelabi, Rapheal; Oyenubi, Adebayo; Afolabi, Baruwa
    This study investigates the severity of the challenges associated with the Public-Private Partnership system initiation phase in the procurement of public infrastructure. Also, strategies for managing the barriers associated with the procurement system were evaluated. The study adopted a quantitative research method, conducting a questionnaire survey targeted at selected PPP stakeholders, which includes Architects, Builders, Structural engineers, estate managers, and Quantity surveyors in Lagos and Abuja. The stakeholders were elicited from selected 19 PPP projects using a project-based approach. The data generated were analysed with SPSS 21 using descriptive and inferential tools. Findings from the study revealed the most severe factors associated with PPP procurement system failure to deliver public infrastructure at the inception phase, including a lack of PPP development fund to promote PPP, corruption among the political class, and investors' perception of the country as high-risk for investment. Likewise, strategies considered significant to managing the PPP initiation barriers were unveiled including establishing policies to facilitate PPP at the inception phase, improving transparency in information sharing and providing guarantee legal framework to protect investors. The findings will grant PPP stakeholders insights to the issues responsible for the termination of PPP project collaboration at initiation phase of the procurement system. Also, the unveiling of the PPP challenges and mitigating strategies at the inception phase could guide stakeholders in developing a framework to a successful PPP implementation in a bid to encouraging more participation at this level.
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    INVESTIGATING FACTORS AND REASONS FOR THE ADOPTION OF GREEN RETROFITTING TECHNOLOGY IN NIGERIA
    (Investigating Factors and Reasons For The Adoption Of Green Retrofitting Technology In Nigeria Vol.12, No1, 2024-10) Ojelabi, Rapheal; Mohammed, T. A.; Tunji-Olayeni, P.; Oladiran, O. J.
    Green retrofitting technology (GRT), which has revolutionized the construction industry of several nations has been poorly implemented in Nigeria. This research investigates issues on the adoption of GRT within the Nigeria built environment. The specific objectives are to examine the factors affecting the adoption of GRT; and find out the reasons for the adoption of GRT. Questionnaires were administered electronically to 100 construction industry professionals in Ekiti State Nigeria, selected via purposive sampling technique. Data were analysed using descriptive statistics tools. The study reveals nine factors affecting adoption of GRT in the research area and shed light that improved building performance is the topmost reason for the adoption of GRT. The study concluded that although there are several factors affecting adoption of GRF, nonetheless, limited knowledge of the technology is topmost among them. It implies that the adoption of the technology could also be limited in scope in the Nigerian construction industry. It is recommended that construction professionals and customers should be holistic in their reasons for the adoption of GRF. This can be done by attaching equal importance to all the reasons for the adoption of GRF.
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    Modelling client and construction firm barriers hindering social client relationship management system implementation in the built environment
    (Architectural Engineering and Design Management (Taylor and Francis), 2023-11) Ojelabi, Rapheal; Adedeji, Afolabi; Oyeyipo, Opeyemi; Ogunrinde, Olugbenro
    The need to foster a strong relationship in the construction industry is vital due to the level of dependency among stakeholders in the sector. The social CRM system has been deployed as a relationship tool in most sectors, but its infusion in the construction industry is not resounding. Hence, the study investigates the barriers to Social Client Relationship Management application in fostering sustainable relationships among construction stakeholders. It models the relationships between the associated barriers between the client and the construction organisations affecting the implementation of social CRM systems. A quantitative research approach was adopted, and a face-to-face questionnaire survey was conducted on 200 construction experts selected from 40 construction projects in Lagos Island. The targeted construction experts were elicited for the survey using purposive sampling techniques. Data from the survey were analysed using SPSS 21 data analytics techniques like frequencies and percentages. Also, the study used SmartPLS (v.3.2.3) to develop the structural model. Findings from the study revealed a strong relationship between the significant factors associated with the clients and construction organisation hindering Social CRM system implementation in the built environment. The findings can assist built environment stakeholders in developing strategies to control the factors associated with the client and construction organisation militating against Social CRM implementation in the construction industry.
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    Diagnosing Government Responsibilities in the Implementation of Public-Private Partnership System for Infrastructure Procurement
    (International Journal of Sustainable Development and Planning Vol. 20, No. 6, 2025-06) Ojelabi, Rapheal A.; Oyenubi, Adebayo; Oyeyipo, Opeyemi
    Public-Private Procurement is a system that allows for collaboration between the government and private partners in infrastructure provision. However, researchers argued that the successful implementation of the procurement option rested more on the government's shoulders. Hence, the study aims to identify critical government roles and investigate their importance and performance in PPP projects in Nigeria using a survey approach. The targeted respondents are PPP stakeholders operating in Lagos and Abuja. However, due to the absence of comprehensive lists of the PPP stakeholders involved in PPP projects in Nigeria, a project based approach was used in attaining the representative samples for the study, including contractors, consultants, concessionaires, government agencies, and financiers. About 384 copies of questionnaires were randomly distributed to the sample representatives, and 274 copies were retrieved. The data generated were analyzed using descriptive and inferential statistical tools. Findings showed that all the roles identified are critical and showed significant interrelationships with each other. However, the government's performance in the highlighted roles is unsatisfactory, and recommendations were made on its shortfall.
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    Adoption and Barriers of Engineered Bamboo Products in the Nigerian Construction Industry
    (Civil Engineering and Architecture 13(2), 2025) Ojelabi, Rapheal A.; Omuh, Ignatius O.; Amusan, Lekan M; Ogunrinde, Olugbenro
    The rise in the cost of conventional construction materials and the greenhouse effect from construction activities have been an issue of concern to stakeholders in the construction industry. Hence, efforts have been concentrated on developing low-cost, environmentally friendly and sustainable local materials to mitigate the greenhouse effect. The quest for the sustainable materials necessitates the study to examine the prospects of adoption of engineered bamboo products and the challenges militating against its use among construction professionals. A quantitative approach was adopted and 70 questionnaires were distributed among construction professionals with structural engineering background in selected firms across Lagos State. Data collected were processed using percentage, mean item score and Kruskal Wallis’s test. Facts garnered from the study revealed that engineered bamboo adoption for construction related works like ceiling, flooring, and reinforcement among others is not outstanding. The poor implementation of the engineered bamboo products is attributed to some challenges which include ‘high affinity for conventional materials’, ‘unavailability of bamboo products’ and ‘lack of machinery to refine raw bamboo’ among others. Therefore, the study recommends that stakeholders need to channel more resources into research and development and creating an enabling policy that can enhance the bamboo products adoption.
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    Construction Craftspeople Apprenticeship in Nigeria: From the Lens of Apprentices
    (Routledge; Taylor & Francis, 2026) Tunji-Olayeni, Patience; Adah, Christiana Ada; Daniel, Emmanuel Itodo; Aghimien, Douglas
    The construction industry is facing a shortage of skilled workers worldwide. This shortfall can be addressed through the construction craftspeople apprenticeship system, which has not received significant attention in developing countries like Nigeria. This study aims to explore the experiences of apprentices in construction craftspeople apprenticeship programs in Nigeria. Data were collected using questionnaire surveys and interviews. Astructured questionnaire was distributed to thirty-two apprentices across two construction craftspeople apprentice ship programs in Nigeria, and sixteen interviews were conducted. The survey data were analyzed using the Relative Importance Index (RII), while data from the interview were analyzed using content analysis to identify key themes. The findings revealed that the primary motivators for individuals to pursue apprenticeships in the construction sector include the desire to work in the construction industry, the opportunity for skills and ability development, and the opportunity for income and associated benefits. Conversely, the major challenges faced by apprentices include limited job availability after completing their apprentice ship, poor or nonpayment of allowances, redundancy during training and inadequate training quality. These findings are significant for con struction stakeholders as they highlight the need for strategies to encourage young people to engage in apprenticeship training while addressing the challenges faced by apprentices.
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    The experience of women in construction craftspeople apprenticeship programmes in Nigeria
    (Emerald Publishing Limited; ICE Publishing, 2025) Tunji-Olayeni, Patience; Adah, Christiana Ada; Daniel, Emmanuel Itodo
    The construction industry needs skilled personnel for its sustainability due to the shortage of skilled workers. Women are reputed to bridge the gap created by skills shortages in construction, which can be achieved by increasing their par ticipation in the industry through the instrumentality of construction craftspeople apprenticeship training. This qualita tive study explored the experiences of women in construction craftspeople apprenticeship programmes in Nigeria. Twelve female apprentices and two representatives of stakeholders (senior managers at the apprenticeship pro grammes) from two construction craftspeople apprenticeship programmes were interviewed on the factors that moti vated women to join construction crafts apprenticeship training and the challenges confronting female apprentices. The data retrieved were transcribed and qualitatively analysed using code-based content analysis. Findings indicated that the main factors motivating women to participate in construction craftspeople apprenticeship programmes are: the desire to acquire skills and intrinsic factors such as employment opportunities and better remuneration. Payment issues such as non-payment of allowance, and issues related to apprenticeship training, such as inadequate tools for training, were the prominent challenges faced by female apprentices in construction craftspeople apprenticeship pro grammes. The study identified factors that can be enhanced by stakeholders in construction craftspeople apprentice ship training to attract women to the construction industry.
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    Application of artificial intelligence in the Nigerian building and construction industry
    (2022) Tunji-Olayeni, Patience; Owolabi, James Dele; Malagwi, ,Dzarma; Oyeyipo, peyemi; Ola-Ade, Esther Oluwafolakemi; Fikiemo, Patience
    The uniqueness and inherent complexities of the construction industry require the use of Artificial Intelligence (AI) to improve its processes and enhance overall competitiveness and performance. This study examined the awareness level and application of AI to provide useful insights into the state of AI applications in the Nigerian construction industry. A quantitative research design with the use of a questionnaire was used to obtain data from 53 construction professionals in the Lagos Island area of Lagos State, Nigeria. The professionals included Quantity Surveyors, Architects, Civil Engineers, Builders, and Estate Surveyors selected based on a purposive sampling technique. Data from the survey were analyzed with frequencies, mean, and ANOVA. The study found that most of the respondents were aware of the application of AI in construction, and there was no difference in the awareness level of the participants irrespective of their professional affiliations, organizational type, and organizational size. Generally, the most common application of AI among the participants surveyed were generative designs in BIM, measurement and estimating software, and the use of sensors in intelligent buildings. Moreover, design and project planning was found to be the most critical areas of need for AI in the study area. The study underscores the need for investments in other AI applications other than BIM and estimating software to improve productivity, performance, and enhance client satisfaction.