https://community.graphisoft.com/t5/Collaboration-with-other/Exporting-all-representations-of-an-IfcStairFlight-not-only-Brep/m-p/276732#M36312 <DIV class="actalk-migrated-content"><R>Hi everyone,<BR /> <BR /> I am trying to export from Archicad to IFC2x3 a building containing stairs.<BR /> <BR /> Problem is that the exported file contains only the Brep "Body" representation for each IfcStairFlight object, while<A href="http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcsharedbldgelements/lexical/ifcstairflight.htm" target="_blank"> the IFC documentation on the buildingSMART website</A> mentions 3 different representations: <I></I><S><I><I></I></I></S><B>Body </B><E></E>(3D Brep defining the shape), <B><I></I></B><S><B><I><I></I></I></B></S>Boundary<E></E> (2D closed curve enclosing the footprint), and <B><I></I></B><S><B><I><I></I></I></B></S>WalkingLine<E></E> (2D open curve defining the walking line). And I really need these 3 representations (at least the Boundary would be great).<BR /> <BR /> I tried to play with the "Data Conversion for IFC Export" dialog box but haven't been able to export these representations as well.<BR /> <BR /> Any help would be very much appreciated!</R></DIV> Thu, 17 Jan 2019 11:16:08 GMT Anonymous 2019-01-17T11:16:08Z https://community.graphisoft.com/t5/Collaboration-with-other/Exporting-all-representations-of-an-IfcStairFlight-not-only-Brep/m-p/276732#M36312 <DIV class="actalk-migrated-content"><R>Hi everyone,<BR /> <BR /> I am trying to export from Archicad to IFC2x3 a building containing stairs.<BR /> <BR /> Problem is that the exported file contains only the Brep "Body" representation for each IfcStairFlight object, while<A href="http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcsharedbldgelements/lexical/ifcstairflight.htm" target="_blank"> the IFC documentation on the buildingSMART website</A> mentions 3 different representations: <I></I><S><I><I></I></I></S><B>Body </B><E></E>(3D Brep defining the shape), <B><I></I></B><S><B><I><I></I></I></B></S>Boundary<E></E> (2D closed curve enclosing the footprint), and <B><I></I></B><S><B><I><I></I></I></B></S>WalkingLine<E></E> (2D open curve defining the walking line). And I really need these 3 representations (at least the Boundary would be great).<BR /> <BR /> I tried to play with the "Data Conversion for IFC Export" dialog box but haven't been able to export these representations as well.<BR /> <BR /> Any help would be very much appreciated!</R></DIV> Thu, 17 Jan 2019 11:16:08 GMT https://community.graphisoft.com/t5/Collaboration-with-other/Exporting-all-representations-of-an-IfcStairFlight-not-only-Brep/m-p/276732#M36312 Anonymous 2019-01-17T11:16:08Z https://community.graphisoft.com/t5/Collaboration-with-other/Exporting-all-representations-of-an-IfcStairFlight-not-only-Brep/m-p/276733#M36313 Hi,<BR /> <BR /> I looked into this, and it seems like this is just something that has not been developed yet. It is definitely on our to-do list though (task #258727).<BR /> <BR /> Unfortunately I can't think of any way to export a 2D representation of the stair tot IFC. If you find a way, I would very much like to hear about it.<BR /> <BR /> Kind Regards, Tue, 05 Feb 2019 14:18:44 GMT https://community.graphisoft.com/t5/Collaboration-with-other/Exporting-all-representations-of-an-IfcStairFlight-not-only-Brep/m-p/276733#M36313 Daniel Kovacs 2019-02-05T14:18:44Z