In this case (loft double height) was
the need to continue the existing floor to the window to
save space in a first floor bedroom.
first placed in existing concrete beams profiles U (with bits of high resistance).
Then, in a transversal way, were bolted structural sections "C" then receive OSB plates or cementitious (depending on the case.) NOTES
CLEANING AND WORK ORDER.
The weight of the mezzanine is 50 kg/m2, which does not add undue burden on the existing estrutura.