At which level does the validity of a GUID between stakeholders beginn? Since in an IFC File, everything has this unique number (not only objects), i was wondering how can this be implemented throughout a big project, comprised out of multiple IFCs,!?
Based on the below description taken from HERE :
A Globally Unique Identifier (GUID) … provides a way of uniquely identifying an object
To my understanding an Object is a Wall, Door, CableCarrier, etc.
But what about IfcProject → IfcSite → IfcBuilding → IfcStorey???
I am currently working on a project with different stakeholders exchanging multiple IFC. Between these IFCs, in many cases there are no duplicates, but in some cases they appear. By duplicates I mean ex. GUID of IfcProject or IfcBuilding between Architecture and mechanical is the same; GUID of IfcSite between Architecture and Electrical is also the same.
So what is actually legal here?
Because there is one project on a site that has a building with storeys ( IfcProject → IfcSite → IfcBuilding → IfcStorey), all these GUIDs being generated by all stakeholders (with different BIM authoring tools) should be the same??? The differentiation begins at the level of an object?
Looking at it from a “federated model” view point, it makes sense that the above structure is the same.
Can someone please help me on clarifying this…