Hi ! 
i modeled this small system to start with IFC, i'm not that experienced using it
the upper beam is a complex profile : the core, concrete, the skin : Finish,  it's modeled like that for technical reasons, 
i want to export the structural elements only, the beam + two slabs, does the IFC export the beam finish or not ? and how to set it ! ( i'll export to revit structure 
thanks