MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Epic Metals EP450A perforated steel roof deck with fiberglass
EP450A
PTB reference data
Original description
Epic Metals EP450A perforated steel roof deck with fiberglass
Material properties
Manufacturer: Epic Metals Corp.
Thickness: 4 1/2 inch
Wall distance: 0 mm
Backing: fiberglass
Surface: perforated steel
Application: roof deck
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
1.01
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.85 | 1.15 | 1.30 | 1.10 | 0.90 | 0.75 |
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Method (354): Measured