Clem

Thanks for the answer ! So if I understand all the docs, you mean that the convention is wrong and there is no way such ifc exist ?

Hi, I'm a beginner in BIM and i have to work with a BIM convention. i've got a long list of IFC i have to use but some of them are missing or "misspelling" It says that i need to use "IFC STOREY BUILDING " and i've got " IFC BUILDING STOREY" ----------------------------------------"IFC RAIL" and i've got "IFC RAILLING" and i don't have IFC CEILING. How can i add them? or change them? it's a very precise convention and my IFC need to be exactly what the convention says. Thanks ! (using Vectoworks 2016 on mac 10.10.5)