Navisworks, an Autodesk software, offers a solution by accurately spotting clashes between models at the project design stage. It generates clash detection reports for contractors and architects by reading the geometric and time data of the models submitted by separate stakeholders.
With 3D clash free BIM models, Navisworks helps contractors and architects reduce possibilities of multi-level design changes, thereby avoiding budget overshoots and construction delays. It works seamlessly with other BIM software like Revit and is fully compatible with IFC models.

Hard Clash:
For instance, two objects occupying the same space such as a pipe passing through a structural beam or through a structural column.

Soft Clash:

For instance, lack of adequate buffer space between HVAC ducts and ceiling or headspace for fire safety line.

Workflow Clash:

For instance, improper sequence of activities such as concealing pipework in the flooring after the cement concrete is poured.

Navisworks enables creation of ‘federated models’ where individual models are placed in their specific coordinates in a common environment for better project coordination and visualization. This coordination helps identify clashes in the 3D model while supporting more than 60 file formats and integrating with software like AutoCAD, Revit and ReCap.

One of the best features of Navisworks is that it creates a corresponding Navisworks cache file as soon as a CAD file is opened in it. When the same CAD file is opened again in Navisworks, the software first checks for modification in the file if any, and updates the cache. If there is no modification, it loads the cache file making visualization faster. Navisworks uses NWF files when simultaneously referencing multiple CAD files, and the Navisworks cache helps to cut down on the load times of these CAD files.