- Overview
- Example 1 - Lined Brickwork
- Example 2 - Steel Stud Partition
- Example 3 - Twin framed wall
- Example 4 - Concrete floor with ceiling
- Example 5 - Impact on masonry floor
- Example 6 - Timber stud partition
- Example 7 - Timber floor
- Example 8 - Block wall strapped and lined both sides
- Example 9 - Profiled Steel Sheet
- Example 10 - Glazing
- Example 11 - Impact Sound - Light weight floor
- Example 12 - Anechoic room wall
- Example 13 - Rain Noise
Overview
French Examples of predicted vs. measured sound insulation performance.
Example 1 - Lined Brickwork
Clay brick (90mm thick) with 1 layer of 13mm plasterboard fixed to acoustic clip and 25mm fibreglass blanket in cavity.
- - - - Predicted Rw 49
------ Measured Rw 51
Example 2 - Steel Stud Partition
2 layers of 13mm type X plasterboard each side of 90mm timber studs.
Blanket in cavity.
- - - - Predicted Rw 42
------ Measured Rw 43
Example 3 - Twin framed wall
1 layer of 16mm fire rated plasterboard each side of separate 90mm studs. Cavity depth of 200mm. 90mm fibreglass blanket in cavity (16kg/m3).
- - - - Predicted Rw 57
------ Measured Rw 59
Example 4 - Concrete floor with ceiling
Composite Steel floor (Hibond) 120mm thick with suspended light steel grid with 2 layers of 13mm fire rated plasterboard. 75mm fibreglass blanket in the cavity.
- - - - Predicted Rw 57
------ Measured Rw 59
Example 5 - Impact on masonry floor
150mm concrete slab
- - - - Predicted Lnw 29
------ Measured Lnw 27
Example 6 - Timber stud partition
1 layer of 10mm sound rated plasterboard each side of 90mm timber studs
Fibreglass in cavity
- - - - Predicted Rw 58
------ Measured Rw 60
Example 7 - Timber floor
20mm Particleboard flooring on 300mm timber joists with 2 layers of 16mm Fire rated plasterboard hung on a light steel grid underneath, with fibreglass blanket in the joist cavity
Example 8 - Block wall strapped and lined both sides
190mm concrete block lined both sides with 16mm fire rated gypsum board fixed to 75mm steel Z furring channels. No sound absorber in the cavity
- - - - Predicted Rw 59
------ Measured Rw 60
Example 9 - Profiled Steel Sheet
Kliplock 0.7mm corrugated steel sheet
- - - - Predicted Rw 19
------ Measured Rw 21
Example 10 - Glazing
5mm monolithic glass with 16mm airgap and 8.8mm Laminated glass
- - - - Predicted Rw 39
------ Measured Rw 40
Example 11 - Impact Sound - Light weight floor
15mm thick OSB subfloor on 235mm timber joists at 406mm oc with resilient channels at 610mm oc with 16mm gypsum board(.
- - - - Predicted IIC 34 (Lnw 76 dB)
------ Measured Rw 37 (Lnw 73 dB)
Example 12 - Anechoic room wall
300mm thick concrete outer shell with 150mm thick inner concrete shell, floating on springs. Absorption in cavity
- - - - Predicted Rw 110
------ Measured Rw107