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)1252505001k2k4k
αp0.400.901.200.851.100.95

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covered with perforated facing, airspace 40 mmαw0.89
covered with perforated facing, airspace 40 mmαw0.85
covered with perforated facing, airspace 20 mmαw0.78

Weight / density: 3.4 lb/ft²

Dimensions: 24 x 48 inches

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