Department of Building Technology

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Author: search.filters.author.Ojelabi, RaphealHas files: Yes

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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.