In Norway the IFC-format is approved as a national archive format for BIM-models. This approval leads to requirement for a strict format versioning regime. For a typical IFC-file the format version is given like this (from Archicad): [image] But we need to know if it is IFC 4.0.2.1, IFC 4.1.0.0…

Versioning in the IFC-file

Steffen.Rabe June 25, 2020, 11:15am 3

Topic		Replies	Views
FILE_SCHEMA vs. Schema Version Developers ifc4 , 4x3alpha	0	998	June 5, 2020
Industry Foundation Classes are a Data Schema, not a file format IFC xml , formats , step , express , xsd	9	3141	November 11, 2019
IFC Backwards compatibility Developers	6	1749	January 8, 2021
IFC Schema Identifier IFC	5	1299	June 17, 2023
What is the actual status of IFC4ADD2TC1 Users	3	577	November 22, 2018