Advanced Issue: Curtain wall Ballooning file

[-Navisworker-]

I have a Revit model from the curtain wall sub contractor. LOD is 500, file is 30,000 objects and 170MB.

The file is 2017 but the project is 2016. I opted to export to IFC for Revit Coordination then spit the model to Navisworks for site coordination ( I got IFC to work). Initially the file was too big to export to IFC. This required redrawing 15-20 profiles for curtain wall mullions, panels etc, reducing the LOD and the file to 92MB.

Here is the kicker, usually when a model is exported from Revit to Navisworks, the resultant is 90% smaller in file size. When I export this curtain wall to Navisworks, the resultant is 96MB. No matter what I did in my Navisworks export settings I could not reduced the output file size.

This leads me to believe my the curtainwall itself is too big. I am really running out of options for reducing the file size. Here is a list of things tried:

• Exported all families to uncover huge family files. Made edits to reduce family size.
• Purged all families
• Used DPR Slicer cleanup tool, removed all sheets, views, schedules and legends from the model.
• Purged the model, numerous times removing everything
• Removed cad files
• Created new file. Linked in Curtain wall file, copy paste the model, same issues.
• Compacted file (numerous times)
• Exported with a coarse view
• Exported to NW with these options:
  
  

There is something that is ballooning this file and I can't find it. Help??

Autodesk: I have a file I can submit if you want to dig deeper.

[Alan.johnson1970]

I think the problem is your are exporting as IFC which creates the large file size. Can you not export to NWC?

Also are any of the families nested ? - Nested families will increase file size.

[-Navisworker-]

As stated in the post, I solved the IFC issue and got it to work. I also am showing the export process for NWC. Never have I come across an instance where my NWC export is the same size as the revit file. I suggest rereading the post.

On another note, the post is marked as solved but I don't feel it is solved. Is this a glitch in the forum? I thought the original poster is the one that marks stuff solved.

[Alan.johnson1970]

This must be a glitch as I didn't mark it as solved.

[-Navisworker-]

Figured out how to reverse it, but it seems it is a glitch.

[Alan.johnson1970]

Glad that's sorted, sorry I couldn't help more with your export Issue.

Although can you attach the file, I will have a look at it.

[-Navisworker- · Accepted solution]

When you doubt, you just have to experiment.

On a whim I imported the RVT file directly into Navisworks and did it not create an 8MB nwc file. Too sweet. Never did find the cause but this is a solution.