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Modelling a cost profile for road projects

  • Authors: Akinradewo, Opeoluwa , Aigbavboa, Clinton , Oke, Ayodeji , Coffie, Harrison
  • Date: 2021
  • Subjects: Cost performance , Cost profiling , Ghana
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/479691 , uj:43398 , Citation: Akinradewo, O. et al. 2021. Modelling a cost profile for road projects.
  • Description: Abstract: One of the vital success elements of a construction project is the accuracy of the estimation of construction cost. This study is aimed at developing a cost profile for road projects in Ghana. Pro forma was designed to retrieve historical cost data of completed road projects in Ghana. The pro forma retrieved data such as the initial budgeted cost and final construction cost of road projects, location of road projects, features of road projects, the scope of road projects (new project, renovation work, upgrade work or replacement work), type of road projects, and classification of road projects. Cost data were analyzed using descriptive analysis and probability distributions such as cumulative density functions and probability density functions. From the findings, estimates prepared for road projects in Ghana can be expected to be below the final construction cost by approximately 20% as most of the completed road projects in Ghana experience cost overrun.
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Household’s satisfaction with water supply in Johannesburg Metropolitan Municipality, South Africa

  • Authors: Mahlasela, Pathiswa , Oke, Ayodeji , Madonsela, Nelson Sizwe
  • Date: 2020
  • Subjects: Water Supply , Service Quality , Customer service
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/416457 , uj:35229 , Citation: Mahlasela, P., Oke, A., Madonsela, N.S. Household’s satisfaction with water supply in Johannesburg Metropolitan Municipality, South Africa.
  • Description: Abstract: , Basic services When Cape Town was hit by drought in 2017, Johannesburg dam levels were also been affirmed as low; affecting some parts of Johannesburg areas. Through various projects, Johannesburg city contributed water to the residents of Cape Town at the time of famine. Nonetheless, South Africa being one of the water strained countries; is worsened by the growing inequality among the poor and the rich with the former having the feeling that the later are treated better. The study was piloted in Johannesburg within Johannesburg Metropolitan Municipality (JMM). The population size was sampled from the households within the municipality’s regions namely A, B, C, D, E, F and G. The aim was to assess household’s thoughts in view of service quality offered by the municipality on water supply. Even though the study focused on the efficiency of water supply, the inquiry was limited only to service quality provided to households and not the product quality. Despite the fact that households in this municipality proclaim their satisfaction regarding the quality of supplied water, a majority expressed trepidations about communication breakdown between the municipality and households. People indicated that the municipality does not care about people’s good health and wellbeing. Results show that there are no active engagements between the municipality and households at JMM. Moreover, households at JMM have limited knowledge about water endeavors. For an example, there was a high ambiguously when people were asked their opinions on the accuracy of billing for consumed water, per household. At the time of this study, only 28% of respondents were convinced that billing is in fact accurate; 30% alleged that it is not accurate and a massive percentage of 41% expressed that they are not sure about the level of accuracy where billing is concerned.
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Adoption of smart structures for prevention of health hazards in buildings

Appraisal of qualitative factors affecting contractors' tender price in a developing country

  • Authors: Oke, Ayodeji , Ijie, Oriabure , Aigbavboa, Clinton
  • Date: 2017
  • Subjects: Buildability , Form of Tender , Infrastructure Procurement
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/240909 , uj:24793 , Citation: Oke, A., Ijie, O. & Aigbavboa, C. 2017. Appraisal of qualitative factors affecting contractors' tender price in a developing country.
  • Description: Abstract: An important process in the procurement of infrastructure is tendering. Tendering involves invitation to submit tender by clients or their representative, submission of required documents by contractors and selection of appropriate contractors to execute the project. This study examines important constituents of tender price submitted by a contractor and factors affecting their tender price in Nigeria with a view to improving their competitiveness and success rate locally and internationally. Using quantitative design approach, data were obtained through questionnaires administered on registered construction professionals and contracting firms with adequate practicing experience. Prior to the study, pilot study was carried out to ensure proper validity and reliability of the instrument. From the final survey, there is no significance difference in the significance, importance and level of contractors' awareness of constituents of tender price. This implies that contractors are conversant of important elements of their tender price but the major factors affecting this price are related to incorrect/incomplete design as well as buildability and technicality associated the project. These factors are more of project characteristics than that of stakeholders and external variables. In view of this, nature and size of projects should be considered as major factors in estimating tender figure of construction projects by contractors. More so, for the contractors to remain in construction business, there is a need for training, innovation and advancement in the use of new and modern technology.
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Awareness of ecological economics as a model for promoting sustainable construction

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Ndou, Mpho
  • Date: 2017
  • Subjects: Community empowerment , Ecosystem , Sustainable neighbourhood
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/239221 , uj:24571 , Citation: Oke, A., Aigbavboa, C. & Ndou, M. 2017. Awareness of ecological economics as a model for promoting sustainable construction. Journal of Economics and Behavioral Studies (ISSN: 2220-6140) Vol. 9, No. 1, pp. 152-156, February 2017. , ISSN: 2220-6140
  • Description: Abstract: Construction industry is a major consumer of natural resources and this has a significant impact on the environment and socio-economic development of society. The result of this impact includes deforestation; climate change, air, water and land pollution; and the like. Ecological economics (EE) models are tools for assessing and understanding these issues with a view to enhancing green buildings and sustainable construction in general. As part of a continuous study, this research therefore examines the level of awareness of the concept of EE by construction professionals in a quest to adopting the principle of sustainable development. Data were collected through questionnaires administered on relevant and experienced construction professionals such as construction project managers, architects, engineers, quantity surveyors and construction managers. EE as an aid would help in mitigating construction impacts on the environment, thereby enhancing sustainability but it is barely practised in the construction industry. This is as a result of the fact that construction professionals have little or no knowledge of its existence in the local industry. Most professionals with knowledge of the concept in the study area obtained the information on sustainability through the media and short courses .. The basic influencing factors are related to professionals' levels of education, the economic development of the country and knowledge of the environment. Introducing EE through communicating new ideas to stakeholders (through environmental campaigns, conferences, and the like) as well as incentivising ideas for change relating to greener construction will assist in overcoming the barriers to the adoption of EE in the construction industry. Professionals also need to keep abreast of current sustainable practices, their benefits, challenges, barriers as well as the methods of overcoming these barriers in their quest for delivering sustainable projects.
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Causes of collusion among people in construction

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Mangena, Zacharia
  • Date: 2017
  • Subjects: Collusion , Construction industry , Corruption
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/240893 , uj:24791 , Citation: Oke, A., Aigbavboa, C. & Mangena, Z. 2017. Causes of collusion among people in construction.
  • Description: Abstract: Collusion is an unethical and disreputable agreement among parties of similar interests with the intention of achieving a goal through immoral and dishonest means. Proper ethical procurement practice in the construction industry, will enable the Construction Industry Development Board (CIDB) to achieve their mandate which is to promote uniformity in the construction procurement; efficient and effective infrastructure delivery; and development of the emerging contractors, including transformation. Furthermore, the Competition Commission of South Africa (CCSA) to also achieve their mandate which is fair competition in all industries. With collusion in existence it will be difficult for the CIDB and CCSA to achieve their mandate. This study examined the influences of this practice among competitors and stakeholders in the construction industry. Various causal factors of collusion among parties were extracted from review of existing and relevant literature materials and they were further evaluated to arrive at the specific ones that are relevant to the construction industry and selected area of study. Using these factors, close-ended questionnaires were prepared and administered to construction stakeholders with adequate level of experience in the construction industry. The number of questionnaire distributed is 50 and 45 were returned out of which 5 were not correctly and completely filled. The distribution method used was self-administration. In addition, purposive sampling was used. The findings from the 40 respondents indicates that the major cause of collusion in the construction industry is greed of various stakeholders that are shouldered with the responsibilities of managing and monitoring construction contracts and activities especially the contractors. Political influence was also identified as a major reason for collusion among other factors. [Empowering emerging contractors, a well regulated environment, a fair competition,..
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Drivers for the application of automation in construction activities

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Mabena, Siphiwe
  • Date: 2017
  • Subjects: Automated machine , Construction industry , Project performance
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/246246 , uj:25522 , Citation: Oke, A., Aigbavboa, C. & Mabena, S. 2017. Drivers for the application of automation in construction activities.
  • Description: Abstract: The complex nature of the architectural, engineering and construction industry and increasing demand for innovative and technical construction projects by clients, have resulted in increasing adoption and application of information technology at the design, construction and post-construction phases. One of the current innovative technological method is automation, which has gained popularity in some sectors of the economy like manufacturing, banking and entertainment, among others. To promote the usage of this technique in the construction industry, this study examines a number of success factors for the adoption of automation for various activities and processes involved in execution of construction projects. Using survey method, a close-ended questionnaire was designed around 18 drivers obtained from existing and related literature materials on automation and construction process. The research instrument were thereafter administered to 50 construction professionals including architects, engineers, construction managers, quantity surveyors and construction project managers...
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Effect of globalisation on quantity surveying practice in an emerging economy

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Ibitoye, Olayinka
  • Date: 2017
  • Subjects: Elements of Globalization , Measures of Globalization , Quantity Surveyors (QS)
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/240917 , uj:24794 , Citation: Oke, A., Aigbavboa, C. & Ibitoye, O. 2017. Effect of globalisation on quantity surveying practice in an emerging economy.
  • Description: Abstract: In the era where agencies, parastatals and stakeholders in various sector of the economy around the world are clamoring for sustainable developments that are financially viable, socially harmless and friendly to the environment, it is of note that globalization has played a great role and will continue to do now and in the future. A major stakeholders to the actualization of sustainable infrastructural development are quantity surveyors. This study investigates the impacts of globalization on quantity surveying (QS) practice in Nigeria in the quest of equipping quantity surveyor to contribute positively to sustainability of infrastructure projects. Data were obtained from quantity surveyors (QSs) practicing in quantity surveying firms (QSFs) that are registered and licensed to operate by the Nigerian Institute of Quantity Surveyors (NIQS) in the study area. Compare to the benchmark of importance level, it was observed that level of awareness of quantity surveyors of the six basic elements of globalization is low. It was also observed that international trade, foreign direct investment and capital market flow are basic measures of globalization affecting the practice. These have resulted in increase in clients' demand, more opportunities for QSFs including participation in international projects, rise in usage of ICT and general development of the firms. It is therefore imperative for government, NIQS and Quantity Surveyors Registration Board of Nigeria (QSRBN) to formulate appropriate industrial and trade policies that will foster the competitiveness of QSFs, to enjoy emerging global opportunities and compete adequately without resorting to protective measures.
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Effects of automation on construction industry performance

Influences of time buffer usage in the construction industry

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Ndlovu, Tebogo
  • Date: 2017
  • Subjects: Buffering , Construction process , Project performance
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/246226 , uj:25520 , Citation: Oke, A., Aigbavboa, C. & Ndlovu, T. 2017. Influences of time buffer usage in the construction industry.
  • Description: Abstract: One of the issues confronting the construction industry is the continuous inability to deliver construction projects to contract at agreed time. In view of this, various techniques and innovations have been introduced by concerned stakeholders in the quest of delivering projects to the satisfaction of clients and customers, and one of them is the adoption of time buffer. This study therefore examine various factors influencing the adoption of time buffer in construction projects with a view to promoting and maximizing the benefits of the practice in architecture, engineering and construction industry. From existing literature materials, 12 major factors influencing the usage of time buffer for construction projects were identified and adopted. Using purposive sampling, primary data were collected from architects, construction manager, quantity surveyors, engineers and project managers with emphasis on their knowledge and understanding of construction process and the concept of time buffer. Out of the 50 questionnaires administered to these professionals practicing in government, contracting, consulting and client establishment, 48 were completed and analysed accordingly...
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Prevention of collusion for innovative construction

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Mangena, Zacharia
  • Date: 2017
  • Subjects: Construction industry , Corruption , Project performance
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/259896 , uj:27354 , Citation: Oke, A., Aigbavboa, C. & Mangena, Z. 2017. Prevention of collusion for innovative construction. Creative Construction Conference 2017, CCC 2017, 19-22 June 2017, Primosten, Croatia.
  • Description: Abstract: Collusion is an unscrupulous and anticompetitive practices among construction stakeholders which has adverse effect not only on the integrity of the parties or people but also on the overall performance of construction projects. In view of this and in order to ensure healthy competition and alliance among construction stakeholders, this study assessed various measures that can be adopted to minimize or eliminate the practice of collusion in the construction industry. The measures were extracted from existing literature materials and questionnaire was adopted as a means of data collection using a 5-point Likert scale. Using convenience sampling, 49 questionnaires were distributed, 43 were retrieved while 41 were found worthy of further analysis. Among other measures, people involved in construction process including the professionals should be encouraged to report any suspicious acts and transactions including collusion practices, and procurement procedures for construction projects should be open and transparent. There is a need to blacklist and deregister professionals and companies that are caught in the act of collusion as this will enhance project performance and subsequently improve the image of the construction industry. Punishments for the offence should be well documented and there should be strict enforcement of the discipline and regulations when a company or individual is found culpable. This study will help regulatory bodies shouldered with the responsibilities of regulating construction activities - including that of the stakeholders - in their quest to reduce or eliminate the practice of collusion in the construction industry.
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Prevention of collusion for innovative construction

  • Authors: Oke, Ayodeji , Aigbavboa, Clinton , Mangena, Zacharia
  • Date: 2017
  • Subjects: Construction industry , Corruption , Project performance
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/246055 , uj:25499 , Citation: Oke, A., Aigbavboa, C. & Mangena, Z. 2017. Prevention of collusion for innovative construction.
  • Description: Abstract: Collusion is an unscrupulous and anticompetitive practices among construction stakeholders which has adverse effect not only on the integrity of the parties or people but also on the overall performance of construction projects. In view of this and in order to ensure healthy competition and alliance among construction stakeholders, this study assessed various measures that can be adopted to minimize or eliminate the practice of collusion in the construction industry. The measures were extracted from existing literature materials and questionnaire was adopted as a means of data collection using a 5-point Likert scale. Using convenience sampling, 49 questionnaires were distributed, 43 were retrieved while 41 were found worthy of further analysis. Among other measures, people involved in construction process including the professionals should be encouraged to report any suspicious acts and transactions including collusion practices, and procurement procedures for construction projects should be open and transparent. There is a need to blacklist and deregister professionals and companies that are caught in the act of collusion as this will enhance project performance and subsequently improve the image of the construction industry. Punishments for the offence should be well documented and there should be strict enforcement of the discipline and regulations when a company or individual is found culpable. This study will help regulatory bodies shouldered with the responsibilities of regulating construction activities - including that of the stakeholders - in their quest to reduce or eliminate the practice of collusion in the construction industry.
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Quality performance of infrastructure developments in Swaziland

Review of the application of nanotechnology for sustainable construction materials

Understanding the determinants of students’ choice of occupancy for creative construction

  • Authors: Kobue, Tidimalo , Oke, Ayodeji , Aigbavboa, Clinton
  • Date: 2017
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/246057 , uj:25500 , Citation: Kobue, T., Oke, A. & Aigbavboa, C. 2007. Understanding the determinants of students’ choice of occupancy for creative construction. Procedia Engineering, 196 (2017) 423–428. Creative Construction Conference 2017, CCC 2017, 19-22 June 2017, Primosten, Croatia.
  • Description: Abstract: Opportunities for creativity and innovation are always factors that need to be considered when it comes to student accommodation since students are clients in any form of accommodation provided. The study was undertaken to evaluate the factors that affect students’ choice of occupancy in privately owned residences in a South African higher education institution as well as provide insight to housing providers on what factors to give attention to and improve. Students always look for residences that are within a walking distance to campus, meaning it should be close to campus, secure, within a friendly environment or location and have unlimited internet service for academic reasons. The study used primary data obtained through the survey method with the use of structured close-ended questionnaires which were distributed to students living in a privately owned residence. Convenience sampling was used with 55 questionnaires distributed and 50 were returned and worthy to be analysed. Literature was used to obtain factors that were utilised for data collection. Overall, student housing providers including private housing providers should take caution on the factors that affect students choice of occupancy in privately owned residences, thus consider what influences and attracts students to stay in privately owned residences and implement creative and innovative initiatives to better the residences. This study will help accommodation providers (existing and new developments) to enhance residences, attract more occupants without compromising their needs.
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Challenges of mentoring in South African construction industry

Comparative analysis of the impacts of risks on bonded and unbonded construction projects

  • Authors: Oke, Ayodeji
  • Date: 2016
  • Subjects: Construction projects , Risk management
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/223633 , uj:22493 , Citation: Oke, A. 2016. Comparative analysis of the impacts of risks on bonded and unbonded construction projects.
  • Description: Abstract: Despite the introduction and adoption of various techniques and innovative practices geared towards improving the delivery of construction projects, some notable problems of cost overrun, time delay, low quality, dissatisfied clients, etc. still persist. One of the notable practices in the construction industry is the use of bonds and guarantees. Construction bond was introduced as an instrument to protect or indemnify its recipients against risks and problems associated with construction projects but the challenge over the years lies in the practical enforcement of bonding conditions and its overall benefits to the construction industry. This research therefore evaluate the risks that are associated with bonded and unbonded projects with a view to ascertaining their effects on overall construction projects success. Primary data were collected through administration of questionnaires on identified construction bond stakeholders namely: clients of public projects: quantity surveying and architectural firms; and construction firms. Questionnaires were administered on 337 respondents out of which 242 were returned while 236 were certified fit for analysis. Mean item score was used for ranking the identified factors while Kruskal-Wallis and Mann-Whitney tests were employed to examine relationship and differences in sample means of different groups of respondents respectively. The study revealed that financial soundness of the issuer also known as credit risk has major effect on projects with bond while for projects without bond, liquidity risk requires the most attention. The identified bond risks are more inherent in bonded projects except for liquidity and volatility risk. In view of this, special attention should be accorded the activities of guarantors, that is banks and insurance companies, shouldered with the responsibilities of issuing bonds in an attempt to reduce their influence on construction bond process. This will enhance value for money for contractors seeking the bonds and eventually lead to success of construction project.
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Contribution of value management to construction projects in South Africa

  • Authors: Aigbavboa, Clinton , Oke, Ayodeji , Mojele, Sponono
  • Date: 2016
  • Subjects: Construction , Project , Teamwork
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/215571 , uj:21433 , Citation: Aigbavboa, C., Oke, A & Mojele, S. 2016. Contribution of value management to construction projects in South Africa.
  • Description: Abstract: For clients, owners and financiers of construction projects, construction process signify a huge capital investment which translate into substantial fixed costs for their organizations. Value Management (VM) is a business strategy tool to ascertain whether construction of a facility will provide best function at the lowest possible cost. This study examines the contribution of value management to construction projects with a view to assessing challenges and measures to improve adoption and application of the discipline. Primary data were collected through well-structured questionnaires administered on construction professionals within the study area and Mean Item Score was used for data analysis. The major contributions of VM to the South African construction industry include optimize value for money, creates a clearer focus on the project objectives and works towards arriving at a more effective design. However, poor communication, lack of interaction and unwillingness of clients to pay for VM service, were the challenges affecting the adoption of VM. In order to improve construction project performance using the process of value management, orientation meetings should be duly organised, team structure should be finalised and team members must be appropriately selected for construction projects. Built environment professionals - including construction and project managers, should familiarize themselves with VM and strive for its full adoption and implementation for construction projects in order to achieve best value at the lowest complete life cycle project cost for construction clients.
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Drivers and barriers of lean construction practice in South African construction industry

  • Authors: Aigbavboa, Clinton , Oke, Ayodeji , Momoti, Thabo
  • Date: 2016
  • Subjects: Construction projects , Lean construction , Lean principles
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/213319 , uj:21132 , Citation: Aigbavboa, C., Oke, A & Momoti, T. 2016. Drivers and barriers of lean construction practice in South African construction industry.
  • Description: Abstract: Construction is an important aspect of any economy and its effect cannot be over-emphasized. This research investigates the utilisation of lean construction (LC) tools in achieving project processes in the construction industry by identifying its drivers, barriers and how it can improve the delivery of construction projects. The data for the study was collected through detailed questionnaires which were administered on construction role players that are registered and with their professional bodies. The benefits of lean construction includes waste reduction, improved communication system, improved flow and productivity, customer focus and employee empowerment, sharing of knowledge. From the results of the analysis of data obtained from respondents, extensive use of unskilled labour, poor communication, human attitude towards change, lack of interest from clients, lack of client and supplier involvement, lack of long term commitment to change, lack of supply chain integration, lack of technical skills, and inadequate exposure to the requirements of lean construction, were some of the major barriers associated with the implementation of lean construction in the industry. The following lean construction principles that can be used to improve the delivery of construction projects were also identified: business process engineering, team work innovation, ongoing performance management, flow of activities and materials, continuous improvement, elimination of irrelevant activities, team and value management as well as continuous skill development. Itis necessary for organisations to implement the principle of lean construction and such need to be aware of the challenges associated with the practice. More so, there has to be an adequate level of awareness, commitment, knowledge and understanding of the underlying concepts of lean construction to enhance its successful implementation.
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Economic development as a function of construction project performance

  • Authors: Oke, Ayodeji , Ogungbile, Adedayo , Oyewobi, Luqman , Tengan, Callistus
  • Date: 2016
  • Subjects: Construction projects , Economic development
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/223620 , uj:22491 , Citation: Oke, A. et al. 2016. Economic development as a function of construction project performance. Journal of Construction Project Management and Innovation, 6(2):1447-1459. , ISSN: 2223-7852
  • Description: Abstract: Poor performance of construction projects is one of the major cause for concern in the construction industry. Many of the construction projects executed in Nigeria experienced several challenges ranging from simple to complex issues. This paper therefore, examines factors affecting the performance of construction projects, their effects on the economic development and the impact of the factors on the economic development of the nation. The study identified a set of factors believed to affect project performance through extensive review of literature which form the basis for questionnaire survey. A total of 200 questionnaires were self-administered to professionals in the Nigerian construction industry, out of which 148 were retrieved and considered fit for analysis. The survey findings indicate that the most important factors affecting project performance are: project design cost, project complexity, unavailability of resources, quality of equipment and raw materials, while ontime completion, client satisfaction and productivity were considered to be the main measures of construction project performances. Improvement in technology and extension of infrastructures, were the most important indices of economic development. It is recommended that project owners must work collaboratively with all the professionals involved in carrying out construction project in order to facilitate good performance. More so, stakeholders in the construction industry including professionals and regulatory bodies should be proactive in discharging their responsibilities bearing in mind the effect of construction project performance on economic development of the country.
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