Published Paper Details:

This study presents a comprehensive quantitative evaluation of clash detection in Building Information Modeling (BIM)-based residential and commercial building projects. With the growing complexity of architectural and engineering systems, effective design coordination is essential to minimize construction-phase conflicts and cost overruns. In this study, discipline-specific models--architectural, structural, and Mechanical, Electrical, and Plumbing (MEP)--were developed using Autodesk Revit. These models were integrated and analyzed using Navisworks Manage to detect and categorize spatial conflicts as hard, soft, or workflow-related clashes. The residential building model revealed 23 clashes, primarily involving wall-column and wall-wall intersections, indicating structural misalignments. In contrast, the commercial building model exhibited 58 clashes, with a higher concentration of MEP-related issues such as duct-beam and pipe-slab interferences. A clash responsibility matrix was implemented to assign resolution authority based on system hierarchy, improving coordination efficiency. Comparative analysis showed that commercial projects required nearly twice as many resolution iterations as residential ones. Early-stage clash detection was found to reduce design errors by over 70%, save an estimated 30% of project time, and significantly enhance interdisciplinary collaboration. These findings underscore the critical role of BIM-enabled coordination--especially in MEP-intensive projects--and support the integration of such practices in both academic and professional design workflows