Experienced Navisworks Coordinators typically have a very solid workflow in place for grouping clashes into clash groups. Some prefer to do that part manually (with selection and filters), so they can observe and determine which items should be grouped together. Others will use an auto-grouping tool, like bim42 Group Clashes, or iConstruct.

If you are using iConstruct and you wish to use the Navisworks clash group data downstream, you may wish to preserve existing clash groups at each subsequent clash run, and only group the ‘new ungrouped’ clashes. The bim42 Group Clashes tool has a tickbox for this, and iConstruct 2019 provides a filter. If you are using iConstruct 2018 or older, you may be wondering how to preserve existing clash groups and only “push” the grouping rules for clashes that are currently not grouped.

 

Here’s how:

  1. Run the Clash Manager from iConstruct
  2. Find the list entry without a name
  3. Versions:
    • iConstruct 2019 has a filter for “Show Ungrouped Clashes”
    • iConstruct 2018 – select only the ‘unnamed’ Clash Group: ,
  4. Then click “Create Clash Detective Group”
  5. iConstruct will immediately create the relevant groups from only the ungrouped clashes
  6. You can then go ahead and Sync to Revizto, or use the data downstream in some other workflow

 

Here’s a video from Robert Gadbaw that clearly demonstrates this workflow:

This workflow will allow you to use iConstruct to group your clashes, and preserve those groups when Syncing with Revizto. Revizto has a very solid and customisable connection to Navisworks that includes the ability to sync the clash results with Revizto Issues in both directions.

Simon Moreau has shared a nice addin for Navisworks that allows the automatic grouping of clashes. From his blog:
“This plug-in enables a lot of possibilities for sorting clash detection results in a meaningful report, and will become a full-time member of my coordination toolbox.

To install this plug-in, you can copy-paste the ClashDetective.ADSK.dll file available here in a new ClashDetective.ADSK folder in C:Program FilesAutodeskNavisworks Manage 2016Plugins. You can also see my edited version of the example code here.”

Original post: Grouping clash results | BIM 42
Heads-up from Michael Clothier

Here is what the installation folder looks like:

And the addin ribbon in Navisworks Manage 2016:

You can also download the Navisworks SDK from here:

  Navisworks 2016 SDK (Updated April 7th) (exe – 207 Mb)
  Navisworks 2015 SDK (Updated July 1st) (exe – 193 Mb)
  Navisworks 2014 SDK (exe – 217 Mb)

To simulate a temporary search set in Glue, select an object and view its properties. Then, right-click on the desired “search” property and click Select Similar:

To merge Clash Groups in Navisworks:

  1. Select the Groups you want to Merge with Ctrl key
  2. Right-click, Explode (the child clashes will remain selected)
  3. Right-click, Group

Screencast of above: