Tamás Déri

You could try adding a custom property set like: PropertySet: CLIENT(Project) I IfcBuilding Project Name Text Project Number Text Building Number Text Property Name Text Project Address Text Project Status Text Land Parcel Text Land Area Area Country Code Text Function Text Handover Date Text Some of these are default Revit parameters, some are custom project parameters (tabs got removed..)

You could try adding a custom property set like: PropertySet: CLIENT(Project) I IfcBuilding Project Name Text Project Number Text Building Number Text Property Name Text Project Address Text Project Status Text Land Parcel Text Land Area Area Country Code Text Function Text Handover Date Text Some of these are default Revit parameters, some are custom project parameters

You could try adding a custom property set like: PropertySet: CLIENT(Project) I IfcBuilding Project Name Text Project Number Text Building Number Text Property Name Text Project Address Text Project Status Text Land Parcel Text Land Area Area Country Code Text Function Text Handover Date Text Some of these are default Revit parameters, some are custom project parameters

It seems that curtain wall Panels and Mullions always show up in IFC with the LoadBearing parameter set to true, hardcoded. Is there any way to set it to false?

Can you explain that a little bit more? Not IfcMemberType is the typefield itself? The issue is, if I set a Curtain Panel to IfcPlate the IfcExportAs parameter and CURTAIN_PANEL in the IfcExportType parameter it shows up in Ifc as: IFC Element: IfcPlate IFC Element Type: IfcPlateType Predefined Type: CURTAIN_PANEL Howewer in case of a mullion, if I set IfcMember in IfcExportAs, and MULLION in the IfxExportType it shows up like this: IFC Element: IfcMember IFC Element Type: IfcMemberType Predefined...

In R > Export > Options > IFC options window when I load the IFC Export Classes txt file R2018 loads the IFC Type values, but R2017 &2016 don't. Also if I set them manually they got cleared on reopening Revit. Screenshots: https://1drv.ms/i/s!AlwJ7sqwratrmPFjwUmw-wJsWu76ZQ https://1drv.ms/i/s!AlwJ7sqwratrmPFid3OYhG-l5pWyfg

It seems that only R2018 can import the export types from a mapping table. R2016 and R2017 simply ignores those values in the txt files. Is it just me, or is it a general issue? On the other hand the txt files seems weird, it show export layers colors, cut layers as fields, like the dwg layer mapping table.

I've found that I can't export anything but MEMBER type of IfcMember Class. No MULLION, no STRINGER, no NOTDEFINED. Could anybody please check, if its a general issue? I've checked R2016/2017/2018, and none of them exports the correct type. I've tried the mapping table, the IfcExportAs and IfcExportType aswell.