Define Clash Tests

Define Clash Tests

Win64, English

Virtual Projects
Automatically defines Autodesk® Navisworks® clash tests from a Clash Matrix Excel file.

General Usage Instructions

  1. (Optional) Edit the Navisworks Clash Matrix Excel file template from the following installation path:
    • C:\ProgramData\Autodesk\ApplicationPlugins\CreateClashTests.bundle\Contents\[Version]\Navisworks Clash Matrix\02. Clash Detection Matrix-S2-P02.xlsx
  2. Make sure the Search set names in Navisworks match the Test Names in the Excel file and that the connecting cell has “Test Name” written in it
  3. The tolerance is written in the intersecting cell between two search set names in the Excel file
  4. Define the clash test type in the tolerance cell, Nothing = Hard, H = Hard, HC = Hard (Conservative), C = Clearance, and D = Duplicates
  5. Run the Add-In
  6. Browse for the Excel or CSV Clashes File, choose your settings, press “Start” 




After downloading the app from the Autodesk App Store, uninstall the previous version of the app, and double-click on the 'Navisworks-Define_Clash_Tests_V1.4.msi' file to install the app.

You need to sign in with an A360 account (from the information center) the first time you run the Add-In to make sure you are allowed to use it.

Installation location is:



To uninstall this plug-in, exit the Autodesk product if you are currently running it, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall Define Clash Tests, as you would any other application from your system.

Additional Information

Sample files are available in the following path: C:\ProgramData\Autodesk\ApplicationPlugins\CreateClashTests.bundle\Contents\[Version]\Navisworks Clash Matrix\

Options: Edit the Separator from the form, the plugin will add a space before and after the separator

Options: Check Auto Number Clashes, to number each clash test

Known Issues

  • If the tolerance is not written in the Excel file, no clash test will be created


Company Name: Virtual Projects

Author/Company Information

Virtual Projects

Support Information

For any information or support, email:

Version History

Version Number Version Description


- Major bug fixes and enhancements - Now doesn't require Microsoft Excel to be installed - Installation location changed to C:\ProgramData\Autodesk\ApplicationPlugins\CreateClashTests.bundle\


- 2022 Navisworks Support - minor bug fixes and enhancements


- 2021 Navisworks Support - Auto Number Clash Tests - Excel Support, to read directly from an Excel File - You can now define your clash test type in the tolerance cell (Nothing = Hard, H = Hard, HC = Hard (Conservative), C = Clearance, and D = Duplicates) - Updated the sample Clash Matrix file


- Changed App Icon - Added a message at the end of processing


- Changed App Icon - Added a message at the end of processing
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