Prioritize Mechanical, Electrical and Plumbing Elements in Clash Resolution Process from the Cost and Time Aspect by Fuzzy-AHP METHOD

In recent years, with the advent of building information modeling (BIM), significant progress has been made in the quality of the designs and execution of projects. BIM-based models are widely applied to project safety planning and control of time and cost in construction projects. The use of Building Information Modeling has also shown a positive influence on process of clash detection and clash resolution. During the design stages, BIM drawings and plans produced by individual designers are integrated into a federated model and tested to detect design clashes, which if they are not carefully detected and resolved in the design phase, they risk the safety, time, and cost of the project management in addition to increasing the workload. Because of the confined spaces left for MEP systems, between the various elements, mechanical, electrical and plumbing (MEP) design clashes have traditionally dogged the design process. The purpose of this study is to grouping MEP elements to determine their priority in terms of time and cost in the clash resolution process. This research uses the Delphi method to group MEP elements and then applied the Fuzzy-AHP method to determine the weight of MEP elements.