MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated steel roof deck, backed by fiberglass
EP300K
PTB reference data
Original description
Perforated steel roof deck, backed by fiberglass
Material properties
Manufacturer: Epic Metals Corp.
Thickness: 2 inch
Wall distance: 0 mm
Backing: fiberglass
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.64
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.90 | 1.05 | 0.75 | 0.45 | 0.25 |
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Method (354): Measured