How to Manage MEP Clashes in Navisworks
No one looks through a clash report that has thousands of rows. Foremen quickly scan the page shut the file and go back, to the job site. Real conflicts stay buried next to harmless overlaps. The test setup causes this. A blanket Navisworks test compares every model against every other model, so teams receive everything it finds. An MEP clash detection matrix fixes that by deciding upfront which trades get tested, in what order and at what tolerance. Building one starts with understanding why raw results fail. Why Raw Navisworks Tests Create So Many Junk Clashes Navisworks' Clash Detective compares geometry and nothing else, so coordinators must supply the judgment. Three modeling habits make the noise worse: Placeholder duplicates: Architectural models carry generic fixtures that overlap the subcontractor’s fabrication models. Insulation: Tests treat jacketing as solid, so pipes with enough room still register clashes. Missing openings: Early slabs and walls have ...