1 AIT Asian Institute of Technology

Modeling contractor's and subcontractors trust : a system dynamics approach

AuthorRahman, Azmeri
Call NumberAIT Thesis no.CM-06-6
Subject(s)Construction industry
Contractors
Subcontractors

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering & Technology
PublisherAsian Institute of Technology
AbstractA general mistrust within the contactor and subcontractor companies has identified one of the significant barriers to derive benefits from true downstream supply chain integration, can further lead to the development of adversarial relationships. Moreover, this kind of relationship is reflected in projects delays, adversarial attitudes, cost overruns, litigation and a win-lose climate. Using the general theory of trust in inter-organizational relations and conducting interviews, this research discusses factors that influence development of trust and cooperation in contractor-subcontractor relationships in construction projects. System dynamics is the simulation method is selected in this theory-building effort, based on qualitative data collected from two projects of a construction company in Thailand. Reference mode which leads to the formulation of dynamic hypothesis of trust is drawn by interviewing parties. Explanation of the changes or dynamic hypothesis is done based on the principles of feedback loop. Two generic models from both of contractor's and subcontractor's perspective, focusing on the aspects of trust formation, evolution, and propagation is formulated incorporating the dynamic hypothesis along with the other essential detail of the system relating to the problem being addressed. The simulation experiments show plausible path dependent behaviors with the characteristic asymmetries between trust and distrust described both in the literature as in the case data. Performance, permeability, satisfaction and system- based trust are found to make significant contributions toward parties' trust level. In addition, the result suggests that the contractor's trust level is more sensitive towards a wider range of action and behavior of their counter part than vice versa. However, subcontractor's trust level relies strongly on both of system based trust and permeability of the main contractor. Three strategic policies such as best value contracting, management of subcontractors as internal team and semi project partnering approach are recommended to stimulate the trust factors as well as cooperative long term relationship. The reliability of the findings is augmented by a confirmatory study with interviews with field experts
Year2006
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSConstruction Engineering and Infrastructure Management (CM)
Chairperson(s) Hadikusumo, B. H.W.;
Examination Committee(s)Ogunlana, Stephen 0. ;Chotchai Charoenngam;
Scholarship Donor(s)AIT Fellowship ;
DegreeThesis (M.Eng.) - Asian Institute of Technology, 2006


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