Overview

Examples of predicted vs. measured sound insulation performance.

Example 1 - Lined brickwork

Example 1 - Lined Brickwork

Clay brick (90mm thick) with 1 layer of 16mm plasterboard fixed to acoustic clip and 25mm fibreglass blanket in cavity.

 Example01

- - - - Predicted Rw 49

------ Measured Rw 51

Example 2 - Timber stud partition

Example 2 - Steel Stud Partition

2 layers of 13mm type X plasterboard each side of 90mm timber studs.
Blanket in cavity.

 Exampleconstruction02

- - - - Predicted Rw 42

------ Measured Rw 43

Example 3 - Twin framed wall

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).

Exampleconstruction03

- - - - Predicted Rw 57

------ Measured Rw 59

Example 4 - Concrete floor with suspended roofing

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.

Exampleconstruction04

- - - - Predicted Rw 57

------ Measured Rw 59

Example 5 - Lined blockwork

Example 5 - Impact on masonry floor

150mm concrete slab

 

 

Exampleconstruction05a 

- - - - Predicted Lnw 29

------ Measured Lnw 27

Example 6 - Timber stud partition

Example 6 - Timber stud partition

1 layer of 10mm sound rated plasterboard each side of 90mm timber studs
Fibreglass in cavity

Exampleconstruction06 

- - - - Predicted Rw 40

------ Measured Rw 42

Example 7 - Timber floor

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

Exampleconstruction07

Example 8 - Steel stud wall

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

Exampleconstruction08 (1)

 

- - - - Predicted Rw 59

------ Measured Rw 60

Example 9 - Profiled Steel Sheet

Example 9 - Profiled Steel Sheet

Kliplock 0.7mm corrugated steel sheet

 

 

 Exampleconstruction09 (1)

- - - - Predicted Rw 19

------ Measured Rw 21

Example 10 - Glazing

Example 10 - Glazing

5mm monolithic glass with 16mm airgap and 8.8mm Laminated glass

 Exampleconstruction10

 

- - - - Predicted Rw 39

------ Measured Rw 40

Example 11 - Impact Sound

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(.

 

 Exampleconstruction11a

 

- - - - Predicted IIC 34 (Lnw 76 dB)

------ Measured Rw 37 (Lnw 73 dB)

Example 12 - Anechoic room wall

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