Arowosafe, O I (2018) Contractors’ selection criteria for sustainable infrastructure delivery in Nigeria. PhD thesis, University of Derby, UK.
Abstract
The research reported in this study developed and validated a framework for the pre-evaluationof contractors for sustainable infrastructure projects through Public-Private Partnership (PPP)in Nigeria. The proposed framework uses the Analytic Network Process (ANP) to selectcontractors for build-operate-transfer (BOT) contractors. Theoretically grounded on a system theory, a sustainable infrastructure delivery (SID) modelis developed in this research. One of its important features is the ability to solve complexdecision problems, typical of a decision-making process that involves selection of contractorsfor PPP projects. At the deductive phase of the proposed model is the integration of the ANP(multi-criteria decision-making technique) for data synthesis. An extensive literature review was conducted with regard to selection criteria for contractors. Furthermore, a web-based questionnaire survey was undertaken, aimed at capturing theperception of the Nigerian construction professionals regarding the importance of these criteriafor pre-evaluation of contractors for public infrastructure procurement. A total of 143questionnaires was received and their feedbacks were analysed with the IBM SPSS statisticalpackage. The findings revealed a broad range of 55 relevant criteria that were linked tosustainable contractor selection. Through the application of factor analysis, the number of thecriteria was reduced to 16, after multicollinearity issues in the data set had been resolved. The 16 factors were modelled to pairwise comparison matrices, transforming decision makingprocess from linear to a systemic approach. A purposeful sampling methodology was thenapplied for the selection of decision-making panel (DM), who completed the pairwisecomparison survey. The survey results were synthesised by ANP. The final solution derivedorder of significance of the two categories of contractors- multinational constructioncorporations (MCC) and local construction contractors (LCC) in respect to the delivery of asustainable infrastructure. Sensitivity analysis of the research findings reveals that the 16 criteria have differentialcomparative advantages, which requires critical judgement during contractors’ pre-evaluationprocess. Although the overall priorities rank multinational construction corporations (MCC)higher than local construction companies (LCC), it is not absolute that MCC will deliver abetter value for money on all tangible and intangible elements of sustainable infrastructureattributes. LCC outperform on some of the key criteria such as local employment creation andlocal material sourcing, which are essential pre-evaluation criteria. This research proposes a novel framework to harmonise sustainability indicators in contractorselection and offers a new theoretical insight into the approach to contractors’ selection criteriaduring pre-evaluation process, which contributes to the enhancement of PPP delivery inNigeria. Overall, the proposed SID model has demonstrated the need for a shift in the modus operandiof the government’s ministries, department and agencies (MDAs) in Nigeria fromunidirectional to systemic selection techniques. It clearly demonstrates the appropriateness ofthe ANP to predict the contractor that will deliver more sustainable infrastructure.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Thesis advisor: | Ceranic, B |
| Uncontrolled Keywords: | Nigeria; build-operate-transfer; contractor selection; employment; factor analysis; government; infrastructure delivery; integration; partnership; public infrastructure; public-private partnership; questionnaire survey; selection criteria; sustainability; value for money |
| Index terms: | public infrastructure, contractor selection, Nigeria, partnership, decision-making process, employment, factor analysis, sampling, build-operate-transfer, construction professional, analytic network process, infrastructure project, selection criteria, sustainability indicator, multi-criteria decision-making, sensitivity analysis, survey, construction company, literature review, infrastructure delivery, questionnaire, decision-making, methodology, integration, value-for-money, construction contractor, agency |
| Subjects: | data collection methods, data analysis and analytics, management, professional development, partnership management, organizational analysis, decision analysis, sociology, infrastructure and transport systems, statistical analysis, organization, practitioner, contractual arrangements, strategic project management, sustainability assessment, research methods, tendering, Geography, evaluation, decision-making and optimization, environmental hazards |
| Topics: | Sustainability, Procurement, Risk Management, Engineering Principles, Project Management, Geographical Context, Value Management, Roles and Professions, Stakeholder Management, Information Management, Research Practice, Business Strategy, Organizational Design, Human Resources |
| Descriptive scope: | 5 PCTEA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here