The Industry Foundation Classes (IFC) file format was developed by the International Alliance of Interoperability (IAI). IFC provides an interoperability solution between different software applications. The format has established, international standards to import and export building objects and their properties.
IFC improves communication, productivity, delivery time, and quality throughout the life cycle of a building. It reduces the loss of information during transmission from one application to another, with established standards for common objects in the building industry.
Revit MEP provides IFC import and fully certified export based on the latest IAI IFC2x2 data exchange standard. When you export a Revit MEP building information model to IFC format, the information can be used directly by other building specialists, such as structural and building services engineers.
For example, building information models developed with Revit MEP are saved to the RVT file format. You can export the building model using the IFC format to an IFC-certified application that does not use the RVT file format. The drawing can be opened and worked on in the non-native application. Similarly, in Revit MEP you can import an IFC file, create a RVT file, and work on the building model in Revit MEP.
IFC uses architecturally meaningful containers to describe real-world building objects. Those containers include parameters that have meaningful values. Many standard Revit MEP elements have corresponding IFC containers. These do not require any specific user action to export them. (For example, Revit walls export as IFCwalls.)
To see how to import this IFC file into AutoCAD MEP, see my blog at www.autocadmep.blogspot.com