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    Compliance of Accessibility Features of Selected Shopping Malls with Universal Design Strategies in Nigeria
    (Civil Engineering and Architecture 13(4), 2025) Sholanke, Anthony Babatunde; Adisa, Ololade Simbia
    Shopping malls are public facilities that cater to all user groups. To achieve sustainable communities, shopping malls should be designed to meet the accessibility needs of all categories of users. This study assessed the compliance of accessibility features of selected shopping malls with universal design strategies in Nigeria to determine areas for improvement towards promoting inclusivity in the development of the built environment. The study adopted a qualitative research approach. Data from three shopping malls were collected using an observation guide, analysed through content analysis, and presented descriptively with photographs and a table to enhance understanding and provide clarity. The study discovered that while a majority of the accessibility strategies implemented in the malls were satisfactorily compliant with universal design strategies, some of the features did not meet universal design requirements. Key areas found to be lacking include accessibility features largely beneficial for people with disabilities, such as a lack of accessible car parks, slippery floor surfaces, and a lack of lower handrails where main handrails are provided along stairways and ramps for the benefit of people with short stature, and children. Others are the use of open risers, generally considered unsafe for users, and the absence of baby changing toilet facilities. The study suggests retrofitting the shopping malls with accessibility features found to be lacking, to cater for all user groups, including people with disabilities, without compromising the unctionality and aesthetic appeal of the shopping malls. The article is beneficial for policymakers, designers, researchers, and students towards the study, planning, and development of safe, resilient, sustainable, and inclusive environments in conformity with the 11th target of the 17 sustainable development goals.
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    Adequacy of the national building code (2006) in promoting Universal Design practices in Nigeria.
    (Journal of Accessibility and Design for All (JACCES), Volume 15, Issue 2, 2025) Sholanke, Anthony Babatunde; Adisa, O.
    Universal design seeks to develop environments that are accessible to all users, fostering inclusivity and equal opportunity for everyone. Therefore, effective building regulations are essential to support and advance universal design in developing the built environment. This study examined accessibility provisions of Nigeria’s National Building Code (2006), which is an extensive document that provides set standards for how buildings should be designed, constructed and maintained in Nigeria. The National Building Code was examined to identify gaps hindering inclusivity in the built environment, thereby determining their adequacy in promoting universal design practices, towards enabling individuals to participate in society without physical barriers. The study is a review article that employed qualitative research methods to gather, analyse, and present data. A systematic textual analysis was conducted using secondary sources, including the NBC (2006), the 7 Principles of Universal Design, and key accessible design standards. The data were grouped into themes, and the content was analysed. A descriptive approach and thematic categories were employed to explain the findings. To achieve its findings, the study used two objectives, it examined the existing accessibility provisions of the National Building Code in relations to the requirements of Universal Design Principles and used the provisions found to determine the adequacy of the Code in promoting universal design practices in the development of the built environment. The findings revealed that although the Code contained some relevant accessibility provisions, several of them were vague, lacked detailed specifications or dimensions needed to ensure inclusivity. The study submitted that in its current state, the National Building Code (2006) operational in Nigeria is inadequate in promoting the ideals of universal design. The study recommends a detailed systematic revision of the code to address the identified shortcomings relating to accessibility.
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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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    Geoelectrical Characterization of Coastal Aquifers in Agbado-Ijaye, Lagos, Southwestern Nigeria; Implications for Groundwater Resources Sustainability
    (MDPI, Basel, Switzerland, 2023) Oyeyemi, Kehinde D.; Abuka-Joshua, Joyce; Rotimi, Oluwatosin J.; Dieppois, Bastien; Gomo, Modreck; Olaojo, Abayomi A.; Falae, Philips O.; Metwaly, Mohamed
    Water is a natural resource; its availability depends on climatic and geological conditions, and it is invariably controlled by human activities. Agbado-Ijaye lies within a coastal area, where local communities have been facing incessant water shortages, especially during the dry season. This study investigated the groundwater-bearing geological unit(s) using hydrogeophysical techniques in the coastal environment. The electrical resistivity technique, involving vertical electrical sounding (VES) and two-dimensional (2D) electrical resistivity imaging via Wenner array electrode configuration, was used to characterize the geoelectric distribution. Twenty VES stations were investigated and current electrodes (AB/2 m) spacing expanded from 1–200 m; four 2D electrical resistivity imaging traverses having a length of 200 m each and interelectrode spacing of 10 m (level 1) to 60 m (level 6) was adopted. Four geoelectric units were delineated, namely: topsoil (15–251 Ωm), clayey (28–100 Ωm), clayey sand (125–190 Ωm) and sandy (205–876 Ωm) with thicknesses ranging from 0.7–1.3 m, 4.1–19.0 m, 2.6–15.6 m and undefined depth, respectively. The 2D imaging sections also detected similar geoelectric layers, corroborating the VES-derived sections. The inverted sections delineated two different aquifers: the shallower low-yield aquifer comprising sandy clay/clayey sand units with a maximum depth of about 5.5 m. This layer is adjudged to be the continental plain sand of the Benin Formation. The deeper high-yield aquifer with a maximum depth of 30.4 m is a beach sand unit that belongs to the Tertiary Alluvium of the Dahomey Basin. The study showed that hydrogeophysical investigation is vital in exploring, developing, and managing coastal groundwater resources.
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    Government’s motives and investor’s commitment in public-private partnership procurement system adoption
    (Sciendo, 2025) Amusan, Lekan; Ojelabi, Rapheal Abiodun; Adewolu, Adeoye Olugbenga; Olanipekun, Oladeji Olubunmi
    The study examined the government’s motives - ment to infrastructure delivery. The study adopted a quan titative research method with a survey conducted using a structured questionnaire targeted at 384 respondents selected through random sampling. The data were ana lysed using mean, percentile and Pearson correlation sta tistical tools. The study identified 17 key motives respon sible for the government adopting PPP in socio-economic infrastructure delivery. These motives were factored into three main groups: public infrastructure maintenance, financial and economic benefits; improved discipline in the contractual relationship and predictable path in infra structure delivery and integration of innovative approach in enhancing infrastructure delivery. Therefore, the relationships between the three factored government’s motives and investor’s commitments, including finance, management, technical and operational services in PPP, were tested using the Pearson correlation statistical tool. The results showed that the motive for public infrastructure maintenance, financial and economic benefits of the government in PPP showed a significant relationship with the four services commitment of private partners. Also, the government’s motive for improved discipline in the contractual relationship and predictable path in infrastructure delivery showed significant relationships with technical, finance and management commit ments of investors. Lastly, the government’s motive for the integration of innovative approaches in enhancing infrastructure delivery showed a significant relationship with only technical commitment. The outcome indicates that factors measuring government motive and investor's services commitment are mutually dependent and critical in ensuring a sustained relationship among stakeholders in a PPP arrangement for infrastructure procurement.
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    PROJECT MANAGEMENT COMPETENCIES OF INDIGENOUS CONTRACTORS IN NIGERIA
    (2016) Tunji-Olayeni, Patience; Mosaku, Timothy O.; Fagbenle, Olabosipo I.; Amusan, Lekan M.
    All over the world, governments are talking about reducing spending of capital and recurrent expenditures. Capital expenditures cover cost for major projects such as infrastructure. Moreover, the wealth and worth of a nation is a function of the availability and quality of its infrastructure. It has been noted that indigenous construction firms do not represent a strong source of competition. Consequently, most construction markets in Africa are dominated by expatriates. Governments of most African countries pay huge amount of money to expatriates because of deficiencies in indigenous capacity. This study therefore, identifies and analyses project management competencies required by indigenous construction firms. A quantitative research method was adopted for the study and 72 questionnaires were distributed to indigenous construction firms in Lagos and Abuja, Nigeria. This study revealed cost management, site management, and time management as the most critical project management competencies of indigenous contractors surveyed. The study further revealed that the critical PM competencies of contractors surveyed are hard/technical competencies. The study recommends that indigenous contractors should in addition to hard competencies develop soft/personal competencies which can also facilitate the achievement of project success.
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    Practitioners’ experiences with the drivers and practices for implementing sustainable construction in Nigeria: a qualitative assessment
    (Emerald Publishing Limited, 2020) Tunji-Olayeni, Patience; Kajimo-Shakantu, Kahilu; Osunrayi, Ewaoluwa
    Purpose – The purpose of this study is to assess the drivers, practices and policies for implementing sustainable construction in Nigeria. This is with a view towards increasing the rate of implementation and diffusion of sustainable construction practice, so that more Nigerians can benefit from its environmental, social and economic dividends. Design/methodology/approach – This study adopted a qualitative research design with the use of face-to face oral interviews. Interviewees were selected using a purposive sampling technique. Data from the interview were analysed using thematic analysis. Descriptive statistics of frequencies, percentages and rankings were also used to present the data and complement the thematic analysis. Findings – The study identified five major drivers of sustainable construction: clients’ demand, international pressure, corporate social responsibility, competitiveness and cost-effectiveness. The common sustainable practices adopted by the interviewees are compliance with health and safety regulation, waste management, energy efficiency and material reuse. The most appropriate policies for implementing sustainable construction as suggested by the interviewees were government regulations, provision of tax relief and subsidies and public awareness. A combination of regulatory policies, market-based policies and voluntary participation of stakeholders will enhance the attainment of sustainability transformations in the construction industry Originality/value – The study is based on the findings of construction participants who have practical experience with sustainable construction in Nigeria. The study also provides empirical evidences which could guide the design and implementation of policies that will further promote the diffusion of sustainable construction in Nigeria.
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    Evaluating Construction Project Performance: A Case of Construction SMEs in Lagos, Nigeria
    (IBIMA Publishing, 2016) Tunji-Olayeni, Patience; Mosaku, Timothy Olusoji; Fagbenle, Olabosipo Ishola; Omuh, Ignatius Owoicho; Joshua, Opeyemi
    Performance evaluation is a vital tool for assessing management performance and formulating corporate strategies. The Nigerian construction industry is reported to be very vibrant and one of the largest in Africa. It is made up of 78% indigenous firms and 22% foreign firms. The indigenous firms are predominately small and medium – sized. However, the Nigerian construction industry have been challenged to improve its performance because of reports of performance problems in terms of cost over runs, time over runs, poor quality of work, low productivity among other problems. The aim of the study was to establish the measures used by construction SMEs for evaluating performance. The study employed a case study research design. Five construction SMEs in Lagos, Nigeria were selected as case studies. The findings revealed that construction SMEs do not use any of the established performance measurement frameworks for evaluating performance. The main performance measures used by construction SMEs are cost, time, quality, customer satisfaction, profitability of the project, labour productivity, safety and team work. It was also established from the study that construction SMEs do not use supply chain management and employee satisfaction. It was suggested that construction SMEs should also use supply chain management and employee satisfaction because these measures have been found to impact positively on firms’ performance.
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    Stakeholders’ perspectives on addressing climate change and respiratory health impacts in Nigeria
    (Pan African Medical Journal, 2025) Akinnola, Olayemi O.; Iseolorunkanmi, Alexander; Niyi-Odumosu, Faatihah; Akinnola, Olayemi O.; Ale, Boni Maxime; Adeloye, Davies; Ozoh, Obianuju Beatrice
    The impacts of climate change on respiratory health are increasingly becoming a significant challenge in Nigerian cities, particularly in Lagos and Ogun States. Engaging stakeholders in discussions about climate change and health is crucial for addressing these challenges. The climate change and respiratory health (C2Rest) Nigeria Study team facilitated a stakeholder engagement to discuss climate change and health impacts in Nigeria, aiming to explore feasible solutions relevant to research, policy, and practice. A stakeholder meeting was conducted on April 23rd, 2024, involving from Gardner´s climate change engagement pathways, which examine key drivers (8 questions), barriers (7 questions), and adaptation pathways (3 questions). Data were collected through note-taking, written contributions, audio and video recording, and subsequently transcribed and analysed thematically. A total of 42 registered participants, comprising government officials, academicians, healthcare professionals, community and religious leaders, attended the stakeholder engagement meeting. Participants made group presentations and submitted a total of 380 written contributions. There were varying views on the drivers of climate change, but there was consensus that the most vulnerable populations include the poor, homeless, pregnant women, children, the elderly, and individuals with underlying health conditions. An important barrier identified was the sociocultural belief that climate change is an act of God or spirits. Financial constraints were a recurrent theme in discussions about mitigation and adaptation to climate change. This report provides valuable information on the most vulnerable population to the effects of climate change in Nigeria and identifies sociocultural beliefs and financial constraints as key barriers to the adoption of effective mitigation and adaptation behaviors.
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    KNOWLEDGE AND PRACTICES OF HEALTHCARE WORKERS ON ARBOVIRAL INFECTIONS AND DIAGNOSTICS APPROACH IN OGUN STATE, SOUTHWEST NIGERIA
    (Open Journal of Medical Research, 2024) Ipadeola, A. F.; Akinnola, Olayemi O.; Kolawole, O. M.; Isere, E. E.; Attah, T. A.; Omenyi, I. O.; Afekelu, O. D.; Oreoluwa, A. A.; Oludare, I. T.; Adediran, A. S.; Olasehinde, G. I.
    Arboviral infections pose significant public health challenges in tropical and subtropical regions like Nigeria. However, these diseases are often undetected by healthcare workers (HCWs) due to the similarity in the presentation to other febrile illnesses like malaria. This study assessed the knowledge and diagnostic practices of HCWs on arboviral infections in Ogun State. A cross-sectional study was conducted among HCWs in selected secondary and tertiary health facilities in Ogun State from October 2022 to September 2023. A semi-structured questionnaire was administered to collect data on sociodemographic characteristics, knowledge of arboviral infections, and diagnostic practices. Stata was used to analyze the data at a 5% level of significance. Of the 96 participants included in the study, 59.4% were female, and 40.0% were ≥35 years old. Nurses constituted the largest cadre (41.7%) while medical doctors (24.0%) were the least represented. Most respondents (68.8%) had never heard of arboviral infections, and 81.3% demonstrated poor knowledge about arboviral infections and diagnosis. Only 6.3% of HCWs had previously suspected or diagnosed an arboviral infection, with clinical diagnosis being more common (66.7%) than laboratory testing (33.3%). Notably, 92.7% of all respondents had no prior training in arboviral infection diagnosis. Good knowledge and previous training received were significantly associated with the diagnosis of arboviral infections among HCWs (p<.05). There is a gap in the knowledge and diagnostic practices of HCWs in the detection of arboviral infections in Ogun State. Thus, comprehensive training programs may be significant in improving awareness, and diagnostic capabilities and enhancing prompt detection and management of arboviral infections in Ogun state