Part 1: Architect’s Guide 1 - 51 1 3 5 6 4 1 2 (plaster board + mineral wool) 1 2 3 4 1 Plaster board 4 Mineral wool 2 Steel sheet 5 Rail 70 mm 3 Plaster board 6 Fixing 1 Resilient strips under rail 2 Gap if slab depth < 15 cm 3 Ceiling void interrupted by the partition 4 Seal Figure 6.7 Cross sections on floor Particular attention should be paid to the control of horizontal transmission: Depending on the thickness of the slab, it may be necessary to make a cut in the slab perpendicular to the partition walls. For the same reason, the ceiling void formed above the false ceiling must be interrupted perpendicular to the partition walls. Finally, at the bottom of the walls, holes for technical equipment must not be drilled opposite one another (minimum spacing of 50 cm) Figure 6.8 On site supplies with installation of plasterboards – Partitions and ceilings 6.3.4 Light façades: Curtain wall systems The acoustic performance of curtain wall systems which usually make up the steel building envelope is obtained through construction similar to that of internal partitions: External cladding Internal facing Air cavity with a filling of an absorbent mattress (mineral wool).
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