2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

Application of Fuzzy Analytic Hierarchy Process in Front-End Planning

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Mr. NEBIYU Kedir (Presenter)
Mrs. Maedeh Taghaddos, University of Alberta
Dr. Mohammad Raoufi, University of Alberta
Dr. Aminah Robinson Fayek, University of Alberta

Project success is dependent upon the proper implementation of front-end planning (FEP) throughout those phases of a construction project’s life cycle that precede the design stage. FEP requires that project stakeholders produce a systematic scope definition and alignment. This process necessarily involves uncertainties since stakeholders occupy different roles and have different objectives. Furthermore, the limited availability of project-specific knowledge during the process of scope definition and alignment usually adds to the uncertainty associated with FEP, therefore requiring that project participants work within ‘acceptable tolerances’ to arrive at a consensus on project objectives and planning. Findings from the Construction Industry Institute (CII) indicate the frequent presence of misalignments between engineering and construction work packages that hinder the execution of installation work packages. These misalignments also introduce uncertainties to the implementation of FEP that need to be addressed.

Currently, CII uses two methods—the Project Development Rating Index (PDRI) and the Alignment Thermometer—to measure the level of scope definition and alignment in construction projects. However, these CII methods cannot adequately address the aforementioned uncertainties. For example, current CII methods lack approaches that can handle subjective variables and linguistic imprecision when addressing both alignment and scope definition issues. There is a need to explore new approaches that incorporate tools that can handle imprecise language more efficiently.

In this study, the fuzzy analytic hierarchy process (FAHP) is used to weigh and aggregate different stakeholders’ definition levels of project components and arrive at a PDRI score that recognizes the uncertainties that exist in construction. In addition, a methodology is developed for producing an Alignment Thermometer that captures the subjective uncertainties associated with stakeholders’ interests and levels of expertise. The results of this study demonstrate that approaches incorporating the FAHP can more effectively handle uncertainty in the FEP process than current CII approaches.