topic Re: How to hide "Core" skins of Composite Structures/Complex Profiles in Collaboration with other software

How to hide "Core" skins of Composite Structures/Complex Profiles

Laszlo Nagy — Sat, 22 Mar 2025 14:41:48 GMT

This is a nice tip that was posted as a comment in the Wishlist:

https://community.graphisoft.com/t5/Wishlist/Partial-Structure-Display-option-to-hide-quot-Core-quot-skins-of/idc-p/656430/highlight/true#M2178

Kudos to @Moreno for the tip.

Let me copy-paste the full text of the post here for easy reference:

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This is one way we export it in IFC, with the "Participate in Collision Detection" option.

Open "Building Materials" and set "Participates in Collision Detection" to "OFF" for the Building Material.

In IFC translator, Geometry Conversion settings:
"Export only geometries which 'Participate in Collision Detection'" --> set to "ON"

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So, what the above achieves is: the core of composites and complex profiles will not be exported in the IFC file if

the Building Materials of these cores are set to not participate in collision detection AND
the IFC export is set to export only skins/components the Building Materials of which do participate in collision detection.

Of course, if you want to export IFC this way, and you also perform collision detection, then I would suggest quickly changing the above Building Material setting before exporting/publishing to IFC, then changing it back so it continues to correctly in Collision Detection.

Re: How to hide "Core" skins of Composite Structures/Complex Profiles

t-ap — Sun, 29 Mar 2026 13:33:46 GMT

Nice Tip but still feels like a workaround for delivering something that is becoming very normal in BIM projects : an architecture model without the load bearing elements.
I would really be great for Graphisoft to include the option in the model filter. I know it's always easy to comment from the outside but since the filter already works for the other way (only display core) then I doesn't seem too hard to make it work for this scenario.

Re: How to hide "Core" skins of Composite Structures/Complex Profiles

Laszlo Nagy — Sun, 29 Mar 2026 15:27:30 GMT

This wish is already on the Wishlist:

https://community.graphisoft.com/t5/Wishlist/Partial-Structure-Display-option-to-hide-quot-Core-quot-skins-of/idi-p/654855

Re: How to hide "Core" skins of Composite Structures/Complex Profiles

t-ap — Mon, 30 Mar 2026 14:50:20 GMT

Thanks ! I'm too late to vote I think 😫

Re: How to hide "Core" skins of Composite Structures/Complex Profiles

Barry Kelly — Tue, 31 Mar 2026 00:58:54 GMT

The date has expired, but it will still accept your vote.

It does for me, unless I have special moderator privileges.

Barry.

Re: How to hide "Core" skins of Composite Structures/Complex Profiles

Laszlo Nagy — Wed, 01 Apr 2026 08:57:19 GMT

Barry is right, if you have SSA/Forward/Subscription, you should be able to vote. Those deadlines (180 days from the first post of the wish topic) were a first iteration, they are not set in stone, and at the moment, wishes can get votes even after the deadlines.