WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
2 inch Tectum over 2 1/2 inch OCF noise barrier batt
panel
PTB reference data
Original description
2 inch Tectum over 2 1/2 inch OCF noise barrier batt
Material properties
Manufacturer: Tectum
Thickness: 4 1/2 inch
Wall distance: 40 mm, 20 mm
Surface: perforated
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.89
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.90 | 1.20 | 0.85 | 1.10 | 0.95 |
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| Compare | Value | |
|---|---|---|
| covered with perforated facing, airspace 40 mm | αw0.89 | |
| covered with perforated facing, airspace 40 mm | αw0.85 | |
| covered with perforated facing, airspace 20 mm | αw0.78 |
Weight / density: 3.4 lb/ft²
Dimensions: 24 x 48 inches