MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Perforated steel roof deck, backed by fiberglass
EPICORE-A
PTB reference data
Original description
Perforated steel roof deck, backed by fiberglass
Material properties
Manufacturer: Epic Metals Corp.
Thickness: 2 inches
Wall distance: 0 mm
Backing: Fiberglass
Application: roof
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.50
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.20 | 0.80 | 1.00 | 0.95 | 0.85 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 2 inches · 0 | 0.50 | 0.10 | 0.21 | 0.79 | 0.98 | 0.95 | 0.86 |
Measured values as a table (1 measurement)
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