Group Clashes

Group Clashes

Win64, English

BIM 42
Automatically sort and group clashes.

General Usage Instructions

Open the Group Clashes window by clicking on the Group Clashes button


  • Select a clash test. The two selections involved in the clash test are displayed below.
  • Select one or two clash rule. Since Autodesk® Navisworks® Manage does not support subgroup for clashes, the group name will include the result of the two rules.
  • Click on Group.


For a full description of each grouping rule, visit




The installer that ran when you downloaded this plug-in from Autodesk App Store has already installed the plug-in. You may need to restart Autodesk Navisworks Manage to activate the plug-in. To uninstall this plug-in, you can run the installer again, or click Control Panel > Programs > Programs and Features (Windows 7/8/8.1/10) and uninstall as you would any other application from your system.

Additional Information

Group Clashes is open-source. It will find the entire source code on Github, and start building your own grouping rules.

Known Issues

The Group Clashes app can have difficulties to manage clash reports with more than 10 000 clashes. Be smart when you set up your clash tests, and everything will be fine.


Company Name: BIM 42
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Author/Company Information

BIM 42

Support Information

Email me at with questions, feedback, or requests for enhancements.

Version History

Version Number Version Description


Create subgroups with a second rule Keep existing groups Batch process multiple clash tests


Initial release
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