WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
wood fibers with portland cement binder
Type M-173 – Fibroplank
PTB reference data
Original description
wood fibers with portland cement binder
Material properties
Manufacturer: Martin Fireproofing Georgia
Thickness: 1 1/2 inch, 2 inches, 2 1/2 inch, 3 inches
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 4 variants
αw
0.65
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.30 | 0.90 | 0.70 | 0.90 | 0.90 |
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| Compare | Value | ||
|---|---|---|---|
| 3 inches | 8 lb/ft² | αw0.65 | |
| 2 1/2 inch | 7 lb/ft² | αw0.62 | |
| 2 inches | 6 lb/ft² | αw0.57 | |
| 1 1/2 inch | 5 lb/ft² | αw0.52 |
Dimensions: 96 x 108 inches
Distance: 0