topic Re: use of SURVEY POINT in AC29 in Collaboration with other software

use of SURVEY POINT in AC29

mitchSyd — Mon, 17 Nov 2025 14:20:39 GMT

I have specified in my IFC Translator the use of the Survey Point

However on export IfcMapConversion and ifcProjectedCRS are not present.

Any suggestions?

PS Is there an AC29 ArchiCAD.pdf to compare with the 27 version.

is there any documentation on changes to IFC in AC29

Operating system used: Mac Apple Silicon 15.7.2 (24G325)

Re: use of SURVEY POINT in AC29

Laszlo Nagy — Mon, 17 Nov 2025 16:54:23 GMT

You can find the Archicad 29 online help here:

https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F001_GettingHelp%2F001_GettingHelp-1.htm

About IFC 4.3: it does not say much except that it can now natively read and write IFC4.3 files:

https://help.graphisoft.com/AC/29/INT/index.htm#t=_AC29_Help%2F005_NewFeatures%2F005_NewFeatures-26.htm%23XREF_54708_Collaboration

Re: use of SURVEY POINT in AC29

Zoltan Vale — Tue, 18 Nov 2025 08:05:37 GMT

Hi @mitchSyd ,

Could you please attach the problematic IFC in this thread in a zip so that I can have a look at it?
Did you export it as IFC4? Because the above mentioned entities are not available in the IFC2x3 schema.

Re: use of SURVEY POINT in AC29

Zoltan Vale — Wed, 19 Nov 2025 12:53:17 GMT

I have checked the issue, seems that if you save 4.3 schema IFC from AC29 then these don't get exported. It is a bug, I have entered to our database and we should fix it asap, for an upcoming hotfix.

Until then if you save IFC4 then the required entities will be there even from AC29.