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
ASC Pacific Acustadek N steel deck, perforated webs
Acustadek N
PTB reference data
Original description
ASC Pacific Acustadek N steel deck, perforated webs
Material properties
Manufacturer: ASC Pacific
Thickness: 3 inch
Wall distance: 0 mm
Perforation: perforated webs
Backing: absorptive backing
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.45
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.95 | 1.00 | 0.90 | 0.45 | 0.25 |
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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 |
|---|---|---|---|---|---|---|---|
| 3 inch · 3.6 lb/ft² · 0 | 0.45 | 0.38 | 0.94 | 1.18 | 0.90 | 0.44 | 0.24 |
Measured values as a table (1 measurement)
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