Athanasopoulou, E; (2008) Delays in construction projects using traditional contract forms: Causes and effects. Doctoral thesis , UCL (University College London).

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Abstract

The construction industry has a consistently poor record with respect to the completion of projects in time, especially for traditional contracts. Delays are the most common and costly problem encountered in construction projects. Completing projects on time is an indicator of efficiency, but the construction process is subject to many controllable and uncontrollable variables. Slipping over the planned schedule, affects both client and contractor. This study is aiming at providing a clear identification and classification of the main causes of delays involved in Greek construction projects, analyzing their effects based on the type of contractual agreement and provide pointers towards mitigating these types of delays. More specifically, this thesis will explain how the design construction coordination and the supply of specialized materials and components can cause time extensions in projects procured through traditional contracting. The thesis is based on qualitative research, which is carried out by use of literature review, interviews and a case study approach of Alexandroupoli's airport in Greece. From the knowledge derived from the existing literature and the particular case study, it has been corifirmed that Significant amount of time should be devoted in planning the project and estimating its time duration. Good design quality will only be assured if Design Construction Coordination is encouraged and implemented. This will help overcome various design-related constraints that would, otherwise, lead in reworks and loss of valuable time and revenue. The principles of Supply Chain Management should be carefully followed, so as to ensure reliable, long-lasting working relationships with competent professionals, which result in on time delivery and trustworthy arrangements. Finally, the choice of procurementaffects the smoothness of a project's flow, but not because of the characteristics of each procurement system. It is the context of the project, the client's expectations and the size and complexity of the construction to be built that determine which procurement method is more suitable. Keywords: Construction delays, Design Construction Coordination, Supply Chain Management, Procurement.

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