The purpose of this study was to evolve how to reduce the manifestation of poor decisions that always produce defects and rework. The purpose of the study is predicated on the fact that good decision-making is a fundamental element of improved project delivery in the construction industry. Such decisions determine the accomplishment of performance parameters in each project. However, suboptimal performance, which is pervasive in the construction industry, is often linked to team decisions. To remedy decision-making pitfalls, the concept of Choosing by Advantages (CBA) is promoted by lean construction researchers. CBA is a decision-making system that assists project parties in deciding a course of action among competing alternatives. Case study research design was used for this project to discover the decision-making process adopted by project teams. The results from the study achieved through cross-case analysis shows that concrete defects and rework is often caused by the project team’s decision-making process, which is influenced by the members of the project team because of lack of experience, poor working conditions, and lack of education. The results also show that the decision-making mechanism of the project teams is influenced by the construction method, specification, cost, quality and time. The outcome of the project team’s decision-making process when choosing a concrete type often causes the concrete defects and rework, which can be eliminated through the application of CBA when choosing a concrete type. The application of CBA when choosing concrete type from two alternatives, ready mixed concrete and site batched concrete is driven by the project team. It was discovered from all three cases that ready-mixed concrete had a better score than site-batched concrete when using CBA to compare these two alternatives. The results show that ready-mixed concrete had less chances of causing concrete defects and rework when used or applied per the correct specifications or methods which are detailed in the engineering drawings of the structure. The study proposes that the project team should adopt CBA to improve their decision-making process on site especially when working with concrete.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:nmmu/vital:28783 |
| Date | January 2017 |
| Creators | Mollo, Lesiba George |
| Publisher | Nelson Mandela Metropolitan University, Faculty of Engineering, the Built Environment and Information Technology |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis, Masters, MTech |
| Format | xiii, 128 leaves, pdf |
| Rights | Nelson Mandela Metropolitan University |
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