NORTEC acoustic raised floor type 2
αw 0.40Absorber class D
Floor
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Manufacturer
Lindner Group
Lindner Group, Arnstorf: metal ceilings, heating and cooling ceilings, raised floors, wall and ceiling linings and the MUTE+ sound absorber line.
Documents
Description
NORTEC acoustic raised floor type 2: perforated floor panel with a qualified floor covering and cavity damping.
Technical data
Material: perforated raised floor panel of fibre-reinforced calcium sulphate, HF-coated on the underside
Surface: qualified, acoustically effective floor covering, WOODline possible
Up to fire class: A1 · Carrier board per EN 13501-1, non-combustible
Certifications: IBR test mark of the Institut für Baubiologie Rosenheim (VOC, biocides, heavy metals, radioactivity)
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.40
Frequency values
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| Compare | Value | |
|---|---|---|
| Oberbelag Fabromont Orbital | αw0.40 | |
| Oberbelag Vebe Strong 956 | αw0.40 |
Absorber class: D
Perforation: perforated floor panel, qualified floor covering, cavity damping
Test setup: Oberbelag Fabromont Orbital
Measured values as a table (2 measurements)
| Build-up | αw | Absorber class | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| perforated floor panel, qualified floor covering, cavity damping · Oberbelag Fabromont Orbital | 0.40 | D | 0.81 | 0.89 | 0.99 | 0.75 | 0.64 | 0.53 | 0.50 | 0.38 | 0.31 | 0.31 | 0.32 | 0.33 | 0.38 | 0.46 | 0.60 | 0.80 | 0.74 | 0.67 |
| perforated floor panel, qualified floor covering, cavity damping · Oberbelag Vebe Strong 956 | 0.40 | D | 0.78 | 0.93 | 1.00 | 0.79 | 0.73 | 0.55 | 0.45 | 0.35 | 0.29 | 0.33 | 0.38 | 0.41 | 0.46 | 0.52 | 0.60 | 0.78 | 0.88 | 0.73 |
Measured values as a table (2 measurements)
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