Zitat:
Zitat von distroe  I think that can be made also a steel profile back structure, but only if it is the only way. |
Yes, I think the roof covering and insulation needs a firm base that should be part of the primary structure. I would use a sleak L or Z beam, affixed to the composite steel/concrete slab or, if possible, to a member of the primary structure (is it a steel structure?).
T.