ARCATBIM content - Architectural Building Information Modeling (BIM) objects /families / system files, free to download in revit or dwg formats for usewith all major BIM and CAD software including AutoCAD, Sketch-Up, ArchiCADand others. Formats: RFA- Revit Object RVT- Revit System DWG- AutoCAD, Sketchup - all CAD softwareBy downloading and using any ARCAT CAD detail content you agree to thefollowing.Free Architectural CAD drawings, blocks and details for download in dwg andpdf formats for use with AutoCAD and other 2D and 3D design software.