Browsing by Author "Idris, Soliu"

Now showing 1 - 13 of 13
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    Awareness of Factors Contributing to Sustainable Construction in Nigeria
    (International Journal of Real Estate Studies, 2020-06) Amuda-yusuf, Ganiyu; Raheem, Wasiu Mayowa; Adebiyi, Ranti Taibat; Abdulraheem, Maimunat Orire; Idris, Soliu; Eluwa, Stephen Eyinaya
    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
    (Built Environment Journal, 2020-08-21) Amuda-Yusuf, Ganiyu; Raheem, Wasiu Mayowa; Adebiyi, Ranti Taibat; Abdulraheem, Maimunat Orire; Idris, Soliu; Eluwa, Stephen Eyinaya
    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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    Barrier Factors Affecting Adoption of Green Building Technologies in Nigeria
    (Built Environment Journal, 2020-06) Amuda-yusuf, Ganiyu; Raheem, Wasiu Mayowa; Adebiyi, Ranti Taibat; Abdulraheem, Maimunat Orire; Idris, Soliu; Eluwa, Stephen Eyinaya
    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 adopting 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 barriers 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 resources 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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    Barriers to Electronic Tendering Adoption by Organisations in Nigerian Construction Industry
    (Environmental Technology and Science Journal, School of Environmental Technology, Federal University of Technology, Minna, Nigeria, 2019-12) Amuda-Yusuf, Ganiyu; Gbadamosi, S.; Adebiyi, Ranti, Taibat; Rasheed, Abdulkadir Shehu; Idris, Soliu; Eluwa, S. E.
    Tendering is an important aspect of procurement that requires the use of information technology to enhance project performance. This study has identified the barriers to etendering adoption leaning upon Technology, Organisational, and Environment (TOE) framework and innovation diffusion theory. Googleforms was used to administer questionnaire to practitioners in construction organisations in North Central Nigeria. Confirmatory factor analysis through structural equation model was used to analyze the data. The study found that there is a positive relationship between external barrier and e-tendering adopting (β = .12, p<0.05) on one hand and internal barrier on the other hand (β = .18, p<0.05). External barriers factors are availability of hardware and software, government policy, poor ICT infrastructure to support e-tendering and competitive pressure from rival organisations in the industry. While internal factors include the size of firm, legal protection of online transactions security (hacking and tracking of user data) and lack of agreed standard have significant impact on the organisation's intention to use e-tendering. Also, IT skill of organisation's labour force has a positive effect on e-tendering adoption (β = .41, p<0.05). These findings will enable policy makers and other industry players to understand the barriers to the implementation of e-tendering adoption and develop strategies to overcome them.
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    Critical Risk Factors Affecting Infrastructure Projects in Kwara State, Nigeria
    (USEP: Journal of Research Information in Civil Engineering, 2022-03-15) Idris, Soliu; Amuda-Yusuf, Ganiyu; Olorunoje, Lukman Olanrewaju; Adebiyi, Rant Taibat
    Infrastructure projects are becoming larger in nature, more complex in a dynamic project environment which are vulnerable to various technical, socio-political, business uncertainty and project related risk. As a result, most of these projects are being over running in terms of either cost, time or expected quality. These projects therefore, require complex risk analysis, risk allocation and risk mitigation, given the highly complex nature and enormous amounts of resources required. The aim of this study therefore, is to identify the critical risk factors affecting the infrastructure projects delivery. Forty-eight risk factors were identified through extant literature review. This was followed by administration of questionnaire to construction practitioners involved in infrastructure projects in Kwara State, Nigeria. Three-stage approach was adopted in the data analysis. The first was determination of risk scores, followed by determination of relative significance of each risk factor using relative importance index (RII) and the final stage involved ranking of the risk factors based on their RII values. Based on this analysis, the study uncovered ten (10) critical risk factors namely, financial difficulties, incomplete design, time allotted to design, inadequate program planning and contractors experience. Others include delay in progress payment, inadequacy of site inspections, design team experience, unstable inflationary and foreign exchange rate. Correlation analysis was also conducted between the top 10 critical risk factors and the result reveled that there is a significant relationship between the identified risk factors. The study suggests that risk analysis should be conducted at the early stage of the project to identify and evaluate project related risks and appropriate mitigating measure should be put in place immediately. Findings from this study will be helpful to project stakeholders to understand the highly risky factors in infrastructure project and where applicable, assign responsibility for those who are best suited to control them
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    Evaluation of Risk Factors Affecting Cost and Time Performance of Civil Engineering Projects in Kwara State.
    (Environmental Technology & Science Journal, 2019-12-19) Idris, Soliu; Oluwaseyi, Awodele; Ganiyu, Amuda-Yusuf
    The construction industry is known for being very poor compared to other industries in the identification, assessment and management of project related risks. Civil engineering projects in particular are riskier due to the nature, complexity and enormous amount of resources required. However, project team usually failed to analyse these risks at beginning of the project, consequently leading to cost and time overrun and unsatisfied client. This paper aimed at evaluating the potential risk factors associated with civil engineering projects with the view to achieving overall project objectives. 31 risk factors were identified from the literature and were used as basis for structuring the questionnaire administered to the Architects, Quantity Surveyors and Engineers in Kwara State. Eighty (80) questionnaires were administered; fifty one (51) were retrieved and analysed using mean item score for the identified factors. Research findings showed that incomplete design, unstable inflationary trend, delay in progress payment, financial difficulties, improper project planning, inadequate programme planning and foreign exchange rate had greatest impact on civil engineering projects. Whereas factors such as Force majeure, labour dispute and strike and mistakes and discrepancies in contract documents has least impact. The study recommends that project team should identify and quantify project related risk at the initial stage and allocate the risks to party/parties suitable to control them. The significant of this study is that, the identification of the risk factors serves as a watch list of risk that the project team should watch out for, and the evaluation of probability of occurrence and severity will enables the project team determine the level of impact the risk can have on cost and time performance of civil engineering projects.
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    Level of Application of Technologies for Health and Safety Management on Construction Sites in Lagos state, Nigeria
    (College of Environmental Sciences, Joseph Ayo Babalola University, Ikeji Arakeji, Osun State, Nigeria., 2023-06-01) Adebiyi, Ranti Taibat; Charles, Isioma Pricillia; Amuda-Yusuf, Ganiyu; Rasheed, Abdulkadir Shehu; Olorunoje, Lukman Olarewaju; Idris, Soliu
    Safety of workers is a grave concern to all stakeholders on construction sites, as construction operations are mostly carried out in hazardous environments due to complexity of construction projects. Research findings revealed the effectiveness of use of technologies in Health and Safety (H&S) management. However, the rates of accidents are still high on construction sites. The objective of this study therefore is to determine the level of application and barriers to the application of technologies for H&S management in Lagos, Nigeria with a view to enhancing safety practices. A questionnaire was designed to collect information on level of application and barriers to the application of technologies for H&S management. Copies of questionnaire were administered to active construction firms in Lagos. Pilot survey revealed 135 active firms at the time of carrying out the study. Purposive sampling method was used to distribute the questionnaire. Findings revealed that application of technologies in H&S management in construction is relatively low. Online Database and Internet of Things were the most used technologies while Robotics and Automaton were rarely used. Capital intensive and low technical ability were the major barriers affecting the application of technologies in construction. From the findings, contracting firms need to increase allocation of capital for acquisition of new technologies and train their workers on the use of these technologies to enhance their safety
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    Perception of Construction Industry Practitioners on Success Factors for Green Building Technologies Adoption
    (USEP: Journal of Research Information in Civil Engineering, 2022-02-23) Amuda-yusuf, Ganiyu; Bamimosu, Halimat Adebukola; Idris, Soliu; Adebiyi, Ranti Taibat; Abdulraheem, M.O
    Climate change resulting from global warming is fast becoming an important issue globally. Although there have been numerous empirical studies that have identified critical success factors for green building development. However, there is dearth of studies on success factors for the adoption of Green Building Technologies (GBT) as an integral part of green building development. This study is set to examine the success factors affecting the adoption of GBT as a component of green building development. A comprehensive literature review was conducted to identify success factors affecting GBT. This was followed by administration of questionnaires to industry practitioners engaged in the design and construction of buildings. The mean score (ms) and ranking of the success factors revealed five (5) most important factors as social awareness of GBT benefits (ms 4.0133), availability of social and natural environment condition to adopt GBT (ms 3.9867), availability of stable economic condition (ms 3.8933), demand and competitive advantage (ms 3.8533), and team members‟ technical background (ms 3.8533). Analysis of variance (ANOVA) was conducted to investigate the level of agreement in the perception of industry practitioners based on type of organisations, years of industry experience, academic qualification and professional background. ANOVA results shows that there is no general agreement in the perception of industry practitioners on the ranking of the success factors. In order to ensure adoption of green building technologies, industry stakeholders must ensure that there is incentive for clients to include cost of GBT in the project budget. Additionally, design professionals must be mandated to always incorporate same at the early stage of building projects. This study has contributed to the existing body of knowledge regarding success factors for the adoption of GBT which could guide in formulating policies for its implementation.
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    Quantity Surveying Practice and Evolution of 5D Building Information Modelling.
    (College of Engineering and Environmental Studies, Olabisi Onabanjo University, Ogun State, Nigeria., 2015) Amuda-Yusuf, Ganiyu; Adebiyi, Ranti T.; Olowa, Theophilus; Idris, Soliu
    Manual quantification by Quantity Surveyors (QS) from two dimensional drawings is complex and prone to human error because of technological and organizational problems. Building Information Modelling (BIM) is an emerging technology with potentials for automation of quantity take-off and estimating process. This study examines barriers to five dimensional (5D) BIM adoption, by Nigerian QS. Purposive sampling approach was used to administer questionnaire to practitioners in construction, consulting and clients' organizations. in Nigeria. A total of 53 validly completed questionnaires were returned and analyzed using Statistical Package for' Social Sciences . The five most important barrier factors to 5D BIM adoption by QS are: lack of collaborative initiatives from industry stakeholders; problems of communication and data sharing among firms; lack of government support and clear road map for BIM implementation; BlM model is not compatible with traditional take-off/estimating software tools; and non-alignment of current rules of Building and Engineering Standard Method of Measurement. The 5-dimensional BIM have tremendous potentials to increase the communication efficiency and interpretation ability of quantity surveyors. However, there is need for construction industry stakeholders to formulate strategies to develop and implement information exchange system that can support collaboration.
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    RISK FACTORS AFFECTING COST AND TIME PERFORMANCE OF CIVIL ENGINEERING PROJECTS IN KWARA STATE
    (THE PROCEEDINGS OF INTERNATIONAL CONFERENCE OF ENVIRONMENTAL SCIENCES, 2019-04-30) Idris, Soliu; Awodele., O. A; Amuda-Yusuf, G
    The construction industry is known for being very poor compared to other industries in the identification, assessment and management of project related risks. Civil engineering projects in particular are more risky due to the nature, complexity and enormous amount of resources required conversely leading to cost and time overrun. This paper aimed at evaluating the potential risk factors associated with civil engineering projects with the view to achieving overall project objectives. A-31 risk factors were identified from the literature review and were used as basis for a questionnaire survey administered to the Architects, Quantity Surveyors and Engineers in Kwara State. Eighty (80) questionnaires were administered; fifty one (51) were retrieved and analysed using mean item score for the identified factors. Research findings showed that incomplete design, unstable inflationary trend, delay in progress payment, financial difficulties, improper project planning, inadequate programme planning and foreign exchange rate had greatest impact on civil engineering projects. Whereas factors such as Force majeure, labour dispute and strike and mistakes and discrepancies in contract documents has least impact. The study recommends that project team should identify and quantify project related risk at the initial stage and allocate the risks to party suitable to control them.
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    RISK FACTORS AFFECTING COST AND TIME PERFORMANCE OF CIVIL ENGINEERING PROJECTS IN KWARA STATE
    (Faculty of Environmental Sciences, University of Ilorin, 2019) Idris, Soliu; Awodele, O. A.; Amuda-Yusuf, Ganiyu
    The construction industry is known for being very poor compared to other industries in the identification, assessment and management of project related risks. Civil engineering projects in particular are more risky due to the nature, complexity and enormous amount of resources required conversely leading to cost and time overrun. This paper aimed at evaluating the potential risk factors associated with civil engineering projects with the view to achieving overall project objectives. A-31 risk factors were identified from the literature review and were used as basis for a questionnaire survey administered to the Architects, Quantity Surveyors and Engineers in Kwara State. Eighty (80) questionnaires were administered; fifty one (51) were retrieved and analysed using mean item score for the identified factors. Research findings showed that incomplete design, unstable inflationary trend, delay in progress payment, financial difficulties, improper project planning, inadequate programme planning and foreign exchange rate had greatest impact on civil engineering projects. Whereas factors such as Force majeure, labour dispute and strike and mistakes and discrepancies in contract documents has least impact. The study recommends that project team should identify and quantify project related risk at the initial stage and allocate the risks to party suitable to control them.
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    Risk Factors Impacting Cost and Time Performance of Mechanical and Electrical Services Projects
    (Faculty of Environmental Design and Management, Obafemi Awolowo University, Ile-Ife., 2017) Amuda-Yusuf, Ganiyu; Adebiyi, Ranti T.; Olowa, Theophilus; Olorunoje, Lukman; Idris, Soliu
    Mechanical and electrical (M&E) services project is complex in nature and involves a large number of specialist organisations entering the project life cycle at different stages with different lines of relationships, responsibilities and riskmanagement capabilities. Hence, a number of risk arises at the design and installation stages which results into poor cost and time performance in M&E services projects. This paper identified and rank the risk factors affecting cost and time performance of M&E services project. A total of 30 risk factors identified from preliminary investigations was adopted as basis for a questionnaire survey to industry practitioners in Nigeria. Mean response analysis was used to determinedthe probability and severity of the risk factors and risk impact scores was used to rank the relative importance of the risk factors. Analysis of variance (ANOVA) was used to investigate differences of opinions between respondents'. The study identified 23 risk factors (risk impact >3.5) impacting M&E service projects. Out of these risk factors, 7 has significant impact while the rest havemoderate impact. The 7 risk factors in order of their significance are: high foreign materials content, poorly prepared tender documemt, late involvment of M&E engineers,noninvolvement of specialist designers, government policy change, poor specification and poor coodination of design imputs. In addition,ANOVAresults showthat no significant difference exists amongthe professionals on these 7 risk factors.This suggests that the risk level of M&E services project is high.The identification and ranking of the risk factors has practical implication inM&Eservices project. The risk identification and ranking table is a good tool for assessment of risks related toM&Eservices at project inception. This will allow the client and contractor to understand the high risk areas in M&E services project and, where applicable, assign responsibility for those risks to theparty orparties best situated to control them.
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    RISK FACTORS IMPACTING COST AND TIME PERFORMANCE OF MECHANICAL AND ELECTRICAL SERVICES PROJECTS
    (Faculty of Environmental Design and Management, 2017) Amuda Yusuf, Ganiyu; Adebiyi, Ranti Taibat; Olowa, Theophilus O.O.; Olorunoje, Lukeman O.; Idris, Soliu
    Mechanical and electrical (M&E) services project is complex in nature and involves a large number of specialist organisations entering the project life cycle at different stages with different lines of relationships, responsibilities and risk management capabilities. Hence, a number of risk arises at the design and installation stages which results into poor cost and time performance in M&E services projects. This paper identified and rank the risk factors affecting cost and time performance of M&E services project. A total of 30 risk factors identified from preliminary investigations was adopted as basis for a questionnaire survey to industry practitioners in Nigeria. Mean response analysis was used to determined the probability and severity of the risk factors and risk impact scores was used to rank the relative importance of the risk factors. Analysis of variance (ANOVA) was used to investigate differences of opinions between respondents'. The study identified 23 risk factors (risk impact >3.5) impacting M&E service projects. Out of these risk factors, 7 has significant impact while the rest have moderate impact. The 7 risk factors in order of their significance are: high foreign materials content, poorly prepared tender document, late involvement of M&E engineers, non-involvement of specialist designers, government policy change, poor specification and poor coodination of design imputs. In addition, ANOV A results show that no significant difference exists among the professionals on these 7 risk factors. This suggests that the risk level of M&E services project is high. The identification and ranking of the risk factors has practical implication in M&E services project. The risk identification and ranking table is a good tool for assessment of risks related to M&E services at project inception. This will allow the client and contractor to understand the high risk areas in M&E services project and, where applicable, assign responsibility for those risks to the party or parties best situated to control them.