Revit IFC Export object type and name properties override

[juhana.kolppo]

Hello

How can i override object type and type name parameters when exporting model form revit to IFC.

Type name parameter is always like; family name:type name. Is there some shared parameter value to override this.

[alan_eu]

Just curious... Why do you need to change this structure? 🙂

It's something that you couldn´t change on Revit, but you could edit your IFC file on notepad and edit it manually. Do I recommend to do this. Maybe not 😄

[TripleM-Dev.net · Accepted solution]

Hi,

Object type can be overwritten by adding the parameter to elements (type or instance) IfcExportAs

for example a Generic Model can be exported as a Window (Value = IfcWindow)

Note: this doesn't work for all types!

Name/TypeNames can be overwritten by:

Adding a instance parameter named: IfcType (only needed for user families!)

Adding a instance parameter named: IfcName

Adding a type parameter named: NameOverride (only needed for system families, like walls)

As stated above there is some difference between UserFamilies and system families.

Also see: https://sourceforge.net/projects/ifcexporter/  for some more detailled info

Below a sample of the Ifc override result (Left has the override for a wall, right the original)

Sample With Ifc overrides and without

- Michel

[cba]

I am experimenting and i am trying to follow your steps but fail to get same results.

Adding a type parameter called NameOverride for system families like walls does not seem to override Name, but rather Type Name. .

Same applies for IfcName for non-system families like furniture.

Not quite the same outcome, but close i guess.

Name is still just displaying: "Basic Wall:Wall 1:7444"

Type name: "NameOverride Test"

But if i go into [Relations/defines by type] in solibri and expand suddenly i am able to find identity data with Name: "NameOverride Test"

Any hints?

Revit 2020 (20.2.30.42)

[cba]

Edit: Sorry for the confusion - I figured it out.

Instance parameters goes to Name

Type parameter goes to Type Name.

(As you wrote - woops)

Logical when you think about it. However i was hoping i could dictate Name in IFC by using type parameters in Revit as it is being picked up as default value in other IFC software platforms.

I guess it is not possible 😞

[miguel.gutierrezD74CZ]

Sorry to bring this up, but I'm struggling to override the IfcName parameter:

The txt file Im using as shared parameter is from this website:

https://github.com/Autodesk/revit-ifc/blob/master/Install/Program%20Files%20to%20Install/IFC%20Share...

However, I dont see any change on IfcName parameter value. This is done in revit 2023. Is there any step I'm missing?

Thanks in advance

[RvdScheur]

In addition, Object Type (instance level) and Element Type can also be overwritten on Type level:

Make sure you add IfcObjectType[Type]  as shared parameter due to the [] in the name.