As it happens, I’m spending the week with my Tekla colleagues this week in Helsinki. Among the set of things we’re working on is the data exchange between SketchUp and Tekla Structures. So any thoughts you have about how this should work would be timely and welcome.
Broadly speaking, IFC is not typically used by any modeling tool as a means for editable data exchange; instead, IFC is a ‘destination’ format appropriate for use as a reference in other modeling applications. Consequently, when you place a SketchUp model in Tekla Structures, it cannot (easily) be edited further.
It sounds like you were hoping there would be a way to place a piece of steel in your SketchUp model and have that automatically be recognized as a piece of steel in Tekla? Can you talk more about the workflow you’d like to be able to follow?