Plaster & sprayHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data
Value from the PTB table, not verified
Capatect Acoustic System BASWA A-70
70 mm Capatect Acoustic System BASWA A-70
PTB reference data
Original description
Capatect Acoustic System BASWA A-70
Material properties
Manufacturer: Caparol Farben Lacke Bautenschutz GmbH & Co Vertriebs KG
Thickness: 2.8 in, 1.6 in
Wall distance: 0 in
Backing: mineral fiber on 0.2 in fiber cement board
Surface: open-pored acoustic plaster Basic 07
Up to fire class: A2
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.65
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.60 | 0.65 | 0.65 | 0.60 | 0.50 |
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| Compare | Value | |
|---|---|---|
| ges. 2.8 in | NRC0.65 | |
| ges. 1.6 in | NRC0.65 |
NRC: 0.65 (derived from ISO 354 lab data)
Distance: 0
Measured values as a table (2 measurements)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ges. 70 mm · 0 · fein strukturierter Akustikputz | 0.65 | 0.24 | 0.31 | 0.47 | 0.53 | 0.65 | 0.68 | 0.63 | 0.64 | 0.68 | 0.67 | 0.63 | 0.62 | 0.65 | 0.63 | 0.59 | 0.53 | 0.52 | 0.50 |
| ges. 40 mm · 0 · fein strukturierter Akustikputz | 0.65 | 0.08 | 0.13 | 0.28 | 0.32 | 0.37 | 0.51 | 0.77 | 0.75 | 0.76 | 0.74 | 0.75 | 0.73 | 0.69 | 0.68 | 0.62 | 0.59 | 0.57 | 0.50 |
Measured values as a table (2 measurements)
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