The IFC 2×3 is the open source ASCII format that transports 3D BIM information between programs; it can be be exported from almost any 3D BIM and 3D CAD program.
The IFC file size depends on two things: the amount of 3D geometry data and the data attached to different elements of the model.
The attached data can be information about who the manufacturer of the element is, to what’s the purpose of the element. For example, the element could be a door that is going to be installed on phase x of the construction.
This is the data that you can use in Unity and the data that we use to provide you the functionalities in Tridify IFC Tools.
If you would like to try Tridify, sign up for free 14 day trial and begin uploading IFC files from any design software.