Category: Design
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
Clash detection is run on federated BIM models of all disciplines, using tools such as Navisworks, to find where ducts hit beams, pipes hit ceilings or doors hit columns, and to resolve them on screen before site.
Why it matters on a project
Every clash solved in the office costs far less than breaking work on site. On large buildings and hospitals it saves clear time and money.
Common mistake
Running the check without clear rules and tolerances, producing thousands of trivial clashes that bury the real ones.
Frequently asked questions
Is clash detection worth it for villas?
It helps on large villas with basements and crowded ceilings, and is standard practice on commercial buildings and hospitals.
Which software is used?
Most often Navisworks with Revit models, with simpler checks possible inside Revit.
Related terms
- BIM (Building Information Modelling)A 3D digital model carrying element information, used for coordination and quantity take-off.
- MEP drawingsElectrical, plumbing, HVAC and fire drawings.
- Shop drawingsDrawings prepared by the contractor or fabricator showing how items are made and installed, approved by the consultant before execution.
- Construction drawingsDetailed drawings used to build the work on site after design approval, including dimensions, levels and details.
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