Hi,
I have custom ifc-translator. When i save ifc-model in IFC4 format and i use BREP precise geometry (so i can calculate wall areas etc. after boolean or cut with roofs) some walls are transparent in Solibri or Trimble...It would seem that walls with windows or glass doors are transparent?
![Transparent walls.JPG Transparent walls.JPG](/t5/image/serverpage/image-id/82745i45B20BB614C6989C/image-size/large?v=v2&px=999)