U-value in wall and slab styles

[taavilooke]

Hi!

 

I'm trying to attach the U-value to wall styles for exporting it to a IFC, but there's a weird inconsistency in the settings. In the IFC Data Mappings tool there is a list of properties which can be exported to IFC. Most of these are visible in the wall/slab style data tab, with the exception of U-value. I can query the value in a worksheet ('Wall'.'U-value'), however this just shows 0.

 

Does anyone have experience with that? Where can I set this variable for the wall/slab styles? Is it dependent on some setting or a preference that the U-value is not shown in the data tab?

 

Thanks,

Taavi