IFC export - ID (name) of composite not attached to its skins

[Johan Stinckens]

I've exported a small sample project to IFC for use in Solibri (Information Takeoff).

Every composite object (walls, slabs) has the ID (Name) attached to it.

When selecting the seperate skins the Name field holds the Material information.

How do I provide the Name field for the skin with the same ID (Name) as the composite it belongs to?!

The information should be there as the skin is a decompose element of the composite.

IFC-Export_CompositeIFC-Export_Composite-Skin

[sma2bim]

Hello ,

Do you have a solution for this problem ? 

I have the same ! 

[Johan Stinckens · Accepted solution]

Hi sma2bim,

I have recently done this using the new component-level type mapping in Archicad 26.

https://help.graphisoft.com/AC/26/INT/index.htm?rhcsh=1&rhnewwnd=0&rhmapid=#t=_AC26_Help%2F005_NewFe...

For IfcWall, IfcSlab, IfcBeam, IfcColumn and IfcStair I added a new IFC Property Component_ID defined as IfcLabel.

I created a new component based rule and added content to map the IfcLabel to the Element_ID of the component.

The IFC export will now contain the Element_ID of the component for the decomposed parts.

In Solibri the wall shows the Element_ID under Identification - Name

When selecting a decomposed part of the component the Element_ID will be shown in AtCo_IFC-Properties as the value for property Component_ID

So now you can easily generate ITO's for a specific building material with relation to the component it is part of.

I hope this helps!

If it does please mark this post as a solution (accept as a solution).

Kind Regards,

[sma2bim]

Thank you !!! 

[Johan Stinckens]

Hi sma2bim,

have you been able to apply this succesfully to your project?!

Did it work as expected?!

[sma2bim]

In same level , i succeed to do it.

when importing the IFC in other software i have different results : 

In solibri : i have the parent element (wall, slab and roof) and under it i have the skins. (good job)

In itwo costx : 

1- if i assign ifcwall and an ifcwalltype to the skin > the software will not recognize the skin

2- if i assign ifccovering (or another)  to the skin > the software will not recognize the skins and the wall. So i have duplicate elements for composites. 

I have to work in that. 

The problem for Revit we have software with settings and template good enough to work. but for ArchiCAD to lot work (and not sure to get the same result).

Thank you , and if you experienced the same specific issue. I will be happy to discuss with you may be we will get a good solution. 

[Johan Stinckens]

Hi sma2bim,

Since you found that this works for Solibri.

Could you please mark my 2023-02-01 reply as a solution -> button "Accept as Solution"?!

This will help other community members find this post.

Kind regards.

[sma2bim]

I can not accept as solution there are no option . 

I think you can. 

 

[Barry Kelly]

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@sma2bim wrote:

I can not accept as solution there are no option . 

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Just click on the 3 dots next to the time of the post (at the top of the post) and in the list you should see "Accept as solution".

Barry.