Regarding the unreasonably huge file size

The file size was abnormally huge so I decided to delete a few 3d objects. Then I deleted all 3d objects and animations just to check if they were the culprit of the issue. But by deleting them the file size only went down to 500MB(from 820MB). Can you please tell me what can be a possible cause for those remaining 500MB? 

  • Guest
  • Nov 8 2017
  • FAQ
Company UATEAM
  • Nov 8, 2017

    Admin Response

    One possible reason for the file size is User Fields. In your file, even if 3D objects have been deleted, if Resources are not deleted, there may still be hundreds of user field values for each of thousands of Resources. 

    On very large projects, consider limiting the number of user fields to only those necessary. If you are using Synchro's Revit plugin, you may limit the User Fields exported to SPX by listing only those needed in the Plugin Export settings

    Alternatively, you may delete 3D and Resource User Fields and their values after import, by selecting them in the Navigator>User Fields list, and right-clicking to choose "Remove"

  • Attach files
  • Guest commented
    November 8, 2017 13:52

    i've deleted both resources and user Fields data and didn't really change. Is it possible that when i replaced 3D objects for the task they still linger somewhere in the memory?

  • Admin
    Kate Hester commented
    November 8, 2017 20:39

    If you'd like us to investigate, you may send the file to

  • Mathieu Farine commented
    December 11, 2017 06:57

    What was the issue there?
    Thanks for the information!

  • Admin
    Kate Hester commented
    December 11, 2017 11:10

    In this particular case, the texture images from Revit were causing the large file size. This can be avoided by using plain colors instead of textures, or instead using Iray in Synchro to add textures for rendering