https://community.graphisoft.com/t5/Collaboration-with-other/Custom-ifc-parameter/m-p/243124#M31397 <DIV class="actalk-migrated-content"><T>Hi,<BR /> How can i add custom parameter in ifc manager for window (u-value). I need calc energy effiency...is it gs_list_heattransfer or Thermal rating or what...and how can i find real one?<BR /> <BR /> Can someone add path how to find it, please? ..i use Archicad 20 version..</T></DIV> Mon, 06 Nov 2017 10:02:14 GMT Anonymous 2017-11-06T10:02:14Z https://community.graphisoft.com/t5/Collaboration-with-other/Custom-ifc-parameter/m-p/243124#M31397 <DIV class="actalk-migrated-content"><T>Hi,<BR /> How can i add custom parameter in ifc manager for window (u-value). I need calc energy effiency...is it gs_list_heattransfer or Thermal rating or what...and how can i find real one?<BR /> <BR /> Can someone add path how to find it, please? ..i use Archicad 20 version..</T></DIV> Mon, 06 Nov 2017 10:02:14 GMT https://community.graphisoft.com/t5/Collaboration-with-other/Custom-ifc-parameter/m-p/243124#M31397 Anonymous 2017-11-06T10:02:14Z