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
NORTEC acoustic raised floor type 2
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
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.45
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.90 | 0.65 | 0.40 | 0.30 | 0.50 | 0.75 |
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| Compare | Value |
|---|---|
| NRC0.45 | |
| NRC0.50 |
NRC: 0.45 (derived from ISO 354 lab data)
Perforation: perforated floor panel, qualified floor covering, cavity damping
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| perforated floor panel, qualified floor covering, cavity damping · Oberbelag Fabromont Orbital | 0.45 | 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 | 0.50 | 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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