Noise reduction in buildings is an extensive and complex
field which requires the planner's knowledge.
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At this point we recommend the brochure of the Timber Information Service: "Timber
Construction Manual Series 3, Part 3, Section 3" |
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or the Swiss Lignum: "IP Timber 933 d : Sound
insulation of intermediate floors made from timber". |
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The following examples of constructions with the associated
sound insulation values have also been taken from the Lignum brochure
mentioned. (The associated boundary conditions should be taken from the
source!) |
Floor structure |
Weight |
Constr. height |
Airborne noise R’w |
Impact noise L’n,w |
| |
kg/m2 |
mm |
dB |
dB |
 |
 |
Particle board, 25 mm |
|
Mineral fibre impact noise insulation board, 12/10 mm,
80 to 110 kg/m3 |
|
BS plank, 125 mm |
|
74 |
160 |
49 |
67 |
 |
|
Particle board, 25 mm |
|
Polystyrene impact noise board, elasticised, 22/20 mm |
|
BS plank, 125 mm |
|
75 |
170 |
47 |
68 |
 |
|
Particle board, 25 mm |
|
Dry fill, 30 mm |
|
BS plank, 125 mm |
|
78 |
180 |
49 |
70 |
 |
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Cement supporting floor, 50 mm |
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Waterproof layer, 0.2 mm |
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Mineral fibre board, 12/10 mm, 80 to 110 kg/m3 |
|
BS plank, 125 mm |
|
166 |
185 |
53 |
66 |
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