IFC export - Pset - only type parameters exporting

[borcheva]

Hi!

the only information that I found about my problem:

https://knowledge.autodesk.com/support/revit-products/troubleshooting/caas/sfdcarticles/sfdcarticles...

I would be very grateful if someone had experience with it and could share it.

So, the problem is, that we use the Pset for IFC export and for some elements (90% - windows) only type parameters are transferred to the Pset, although:

1. The instance parameters are exported for the same families of the same type;

2. The solution with separate PropertySets for I (Instance) and T (Type) does not work.

The example of a PropertySet:

#Windows
PropertySet: CG_Attribute I IfcWindow
Geschosszugehörigkeit  Text  Ebene
Typ                                     Text  Beschreibung
Rohbauhöhe [m]              Length Höhe
Rohbaubreite [m]            Length Breite
Umbaustatus                    Text Kommentare
Feuerwiderstand              Text Feuerwiderstand

The instance parameters are hier "Geschosszugehörigkeit", "Umbaustatus" and "Feuerwiderstand".

For IFC export we use the "improved" IFC add-on:

https://apps.autodesk.com/RVT/en/Detail/Index?id=8986482933300179260&appLang=en&os=Win64

Thanks in advance for any help,

Anastasia.

[Mirko.Jurcevic]

The example of a PropertySet:

#Windows
PropertySet: CG_Attribute I IfcWindow
Geschosszugehörigkeit  Text  Ebene
Typ                                     Text  Beschreibung
Rohbauhöhe [m]              Length Höhe
Rohbaubreite [m]            Length Breite
Umbaustatus                    Text Kommentare
Feuerwiderstand              Text Feuerwiderstand

The instance parameters are hier "Geschosszugehörigkeit", "Umbaustatus" and "Feuerwiderstand".

---

Hi,

not sure if I got it right, but is your PropertySet file set to have IFC property name on the left and the name of the Revit parameters on the right?

[Lance.Coffey]

Thank you for the question Anastasia (@borcheva)!

I’m not quite clear on the behavior you are seeing, could you reply with:

• A sample RVT.
• An IFC exported from the sample RVT.
• The element ID of one or more of the Revit elements which are not exporting instance properties to the IFC.

[TripleM-Dev.net]

@Mirko.Jurcevic is correct:

# Format:
# PropertySet: <Pset Name> I[nstance]/T[ype] <element list separated by ','>
# <Property Name 1> <Data type> <[opt] Revit parameter name, if different from IFC>
# <Property Name 2> <Data type> <[opt] Revit parameter name, if different from IFC>

So using the Revit parameter first is only "allowed" if the exporting parameter should be the same name, otherwise the exported IFC name comes first, follewed by datatype and then the Actual parametername in revit.

- Michel

[borcheva]

Hi, thanks for the answer!

Sorry, I should have described from the beginning hier - on the left are IFC parameters, on the right are Revit parameters.

I dont have any problems with it actually - I become all the parameters in the ifc modell. The problem is, that a few e.g. Windows get only type parameters exported, and not instance parameters.

[borcheva]

Hi, as I've already @Mirko.Jurcevic answered:

Sorry, I should have described from the beginning hier - on the left are IFC parameters, on the right are Revit parameters.

I dont have any problems with it actually - I become all the parameters in the ifc modell. The problem is, that a few e.g. Windows get only type parameters exported, and not instance parameters.

[TripleM-Dev.net · Accepted solution]

Could you post the file or at least with 2 windows, on that does export and one that doesn't and the Pset file.

If you isolate a window that doesn't export instance values and only export that one to IFC, does the IFC still lack the instance parameters? or is it more random affect windows. (maybe audit the file and/or check warnings?)

Also, does it miss all instance values or only the ones defined in the Pset?

- Michel

[borcheva]

@TripleM-Dev.net 

@Mirko.Jurcevic 

@Lance.Coffey 

Hi!

Thank you for your ideas and thoughts on my problem.

The first thing I tried is just exporting the isolated windows (they all then had the instance parameters!). Then I exported other next elements and came up with an idea what the problem is. Namely, on the connected/joined walls in Revit. If these are joined, the instance parameters aren't exported in some randomly selected windows.

I've attached 2 screencasts, just to understand what I mean.

The only thing I have to adjust hier is the dividing line in the elevation views. But I'll handle that.

Thanks a lot!

[spr_cfmoller]

I am having the exact same bug. 
When having multiple windows on a wall:

- Only one of the many windows gets exported with instance parameters

- The other windows have only type parameters

 @borcheva could you explain again what the solution was for you?