It's been a while since I've posted anything but I've been quite busy and these days that's a good problem to have!
I saw this topic at the Autodesk Revit Architecture Services & Support RSS feed I subscribe to and I thought it would be good to point it out since renders are becoming more & more important in all the disciplines:
Issue
You want to know why the size of an FBX file exported from Revit® is larger than the original Revit RVT file.
Solution
The original Revit file does not contain the same data as the FBX file. Revit scene file information is based on Revit-specific construction information obtained from the Revit software and is more view-specific in nature.
When this data is exported as an FBX file, it is converted to complex FBX scene information based on geometric data, such as vertex coordinates, UVs, and material data, which is embedded in the FBX file...
