Quietstone Wall Cladding
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An example of
Quietstone Wall Cladding in the London Underground |
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text here regarding quietstone wall cladding. insert
text here regarding quietstone wall cladding.
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An example
of Quietstone Wall Cladding on a motorway service station. |
Acoustic
Performance Sound Absorption Characteristics
Test procedure BS3638:1963
Test conducted by the University of Salford
Octave band frequency (Hz)
| Fixed
Parameters |
Noise
Reduction
coefficients |
125 |
250 |
500 |
1000 |
2000 |
4000 |
| No air
gap |
0.56 |
0.05 |
0.14 |
0.38 |
0.76 |
0.98 |
0.90 |
| 2 inch
air gap |
0.77 |
0.13 |
0.48 |
0.83 |
0.90 |
0.88 |
1.08 |
| 2 inch
air gap plus wool fibre packing |
0.93 |
0.36 |
0.79 |
0.97 |
0.97 |
0.99 |
1.10 |
| 4 inch
air gap |
0.82 |
0.35 |
0.76 |
0.91 |
0.78 |
0.83 |
1.05 |
Sound
Insulation Characteristics
Average 3150 hz 46.1 db.
Figures below are based upon 28mm Quietstone with 12 mm backface of carlite
plaster.
| Hz |
63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
Sound
Reduction
(db) |
27.2 |
33.4 |
38.1 |
43.2 |
52.1 |
57.6 |
64.1 |
Thermal
Conductivity
| K
value 424 x 10-3W/m2/0C K value |
|
| Fire
Safety |
|
| Surface
spread of flame (BS476 part 7 1971) |
Class1 |
| Flame
propagation (BS476 part 6 1968) |
Class
0 |
| Fire
resistance (BS476 part 8 1972) |
2 Hour
fire rating
(single leaf) |
Load
Bearing Properties
| Property |
Value |
| Density |
1600
kg/m3 |
| Compression
Strength |
10.5
x 103 kN/m2 |
| Compression
Module |
3.4
x 106 kN/m2 |
|
