.RPA File Extension
File TypeRIB Project Archive File
What is an RPA file?
File created by iTWO, a construction planning and engineering software package; contains an archive of a Progress ObjectStore database, which is the backend storage format for iTWO project data; used for creating backups as well as archiving projects.
RPA files are backup copies of the data stored in .RPD files. If a user saves the database in iTWO, the RPD data is archived into the resulting RPA file.