What file format does Revit primarily use for its projects?

Revit primarily uses the .RVT file format for its projects. This format is specifically designed for Revit’s parametric building information modeling (BIM) capabilities. The .RVT files contain all the model data, including geometry, relationships, and associated information about the elements in the project, enabling users to create a comprehensive digital representation of the physical and functional characteristics of a building.

Using the .RVT format allows for the intricate interactions and functionalities that Revit offers, such as collaborative workflows where multiple users can work on the same project simultaneously, as well as the ability to update designs dynamically. Changes made in the model automatically reflect throughout the project, maintaining consistency and accuracy.

The other file formats mentioned serve different purposes. For example, .DWG is primarily a file format associated with AutoCAD, used for 2D or 3D drawings rather than the comprehensive BIM environment Revit provides. The .IFC format is an open standard used for exchanging building information across different software applications, but it is not specific to Revit's core functionality and is used mainly for interoperability. Finally, .PDF is a format for sharing documents and is not used for project files in Revit. Thus, .RVT is the correct and primary