Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
panel
Original description
2 inch Tectum over 2 1/2 inch OCF noise barrier batt
ISO 354 – reverberation chamber· 3 variants
αp per ISO 11654
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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
