An improvement in clash detection process by prioritizing relevance clashes using fuzzy-AHP methods

Design coordination and clash detection are the most common and appreciated applications of three-dimensional modeling (3D modeling). In some projects, millions of clashes are detected including a large number of irrelevant clashes. The purpose of this research is to determine the priority of resolving clashes before the construction phase. In this research, the results of Autodesk Navisworks have been used to improve the process of clash detection. Also, this study attempts to use the fuzzy-AHP for weighting criteria and then, by presenting a relationship, to provide a basis to prioritizing clashes for their resolution and, finally, for identifying irrelevant clashes. This method has been tested on a real project, and the comparison of the expert opinions and the proposed method showed that applying the proposed relationship can identify important and irrelevant clashes.