search

Autodesk / revit-ifc

IFC for Revit and Navisworks (2019+)
469 stars 193 forks source link

Steel beams with different start and end level and structural connections are exported wrong #476

Open COWImgbj opened 2 years ago

COWImgbj commented 2 years ago

Using 22.5 IFC exporter (unsure if it was a problem with earlier version) it seems that the steel fabrication element generated when using steel connections does not have the correct end points when exported to IFC. It seems to be completely horizontal, and the end elevation the same as the start elevation.

Beam start Revit image

Beam start IFC image

Beam end Revit image

Beam end IFC image

AngelVelezSosa commented 2 years ago

We will look into this - do you have a simple sample file you can send to angel.velez@autodesk.com?

COWImgbj commented 1 year ago

@AngelVelezSosa This is still an issue in both 23.2.5 and 24.1.0. Is this something that can be fixed?

AngelVelezSosa commented 1 year ago

I'll try to get an update from the Steel Connections team.

parrela commented 1 year ago

I don't see a sample file, apologies if you had send one at the time. Could you re-send?

parrela commented 1 year ago

Got the file. thanks.

parrela commented 1 year ago

I don't see the elevation issue in 2024.1 using IFC 24.1.0.31, but I do see a gap between the beam and the end plate... image

parrela commented 1 year ago

image

parrela commented 1 year ago

@COWImgbj maybe I am missing something. Can you be super-specific?

COWImgbj commented 1 year ago

The gap is just a modelling mistake in Revit. The beams are ok in Revit, but the beams are exported with the same Z coordinate in both ends even though the start and end have different elevations. It seems like the "Start Level Offset" is used for both the start and end of them beam when it is connected to a structural connection and exported as IfcMember to Ifc (and not IfcBeam when it is not connected to a structural connection). image image image image

parrela commented 1 year ago

Sorry, I should have indicated that my images that I posted above show a newly exported IFC file, linked back into Revit and then with spot elevations on the beams. I do see the start and end being different, and the same as the originals. I am looking at 2024.1

COWImgbj commented 1 year ago

I am getting the same result with horizontal beams in Solibri 9.13.2, Navisworks 2023 and Revit 2024. I am exporting using IFC2x3 CV 2.0 with "Include Steel Elements", "Export only elements visible in view" and "Use active view when creating geometry" turn on. Level of detail set to "Low". A user defined propetry set. No Revit or other IFC property sets. Everything else is turned off.

image image

COWImgbj commented 5 months ago

@parrela I am still getting errors when exporting the beams. See my previous post. They are exported as IfcMember. What are your export settings?