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PTB – Physikalisch-Technische Bundesanstalt

Reference data from the PTB database for sound absorption coefficients. These data provide a planning baseline and come from standardised measurements.

1,746 products

Page 33 of 37

PTB · Reference: audienceαw0.85

Chairs, heavily upholstered concert hall chairs, average.

α per m² audience area

PTB · Woodαw0.10

Sylvatone unperforated (pine wood)

PTB · Woodαw0.20

Sylvatone VENABLES (modified)

PTB · Woodαw0.20

Sylvatone - Venables (wood)

PTB · Woodαw0.75

1 inch Tectum over 1 inch layer of 3 pcf fiberglass

PTB · Woodαw0.95

1 1/2 inch Tectum over 2 1/2 inch OCF noise barrier batt

PTB · Woodαw0.70

Tectum Classic film-faced lay-in board

PTB · Woodαw0.75

Tectum Classic painted nubby lay-in board

PTB · Woodαw0.75–0.90

Painted Linear lay-in board

PTB · Mineral woolαw0.70

Tectum Classic Ultimate Nubby lay-in board

PTB · Woodαw0.40

Hanging panels of 1 inch Tectum, spaced 36 inches face to face

PTB · Woodαw0.35

Hanging panels of 1 inch Tectum, spaced 12 inch face to face (series 2)

PTB · Woodαw0.40

Hanging panels of 1 inch Tectum, spaced 24 inches face to face (series 3)

PTB · Woodαw0.35–0.95

Silicate-treated wood fiber, organic binder

PTB · Woodαw0.50–0.70

Structural roof deck

PTB · Woodαw0.55

Tectum II structural roof deck

PTB · Woodαw0.50

Tectum III structural roof composite

PTB · Mineral woolαw0.45–0.80

Tectum Kawool ceramic fiber blanket

PTB · Woodαw0.85

1 inch Tectum over 2 1/2 inch OCF noise barrier batt

PTB · Woodαw0.90

2 inch Tectum over 1 inch layer of 3 pcf fiberglass

PTB · Woodαw0.85

1 1/2 inch Tectum over 1 inch layer of 3 pcf fiberglass

PTB · Woodαw0.85–0.95

2 inch Tectum over 2 1/2 inch OCF noise barrier batt

PTB · Woodαw0.75

Sound absorption blocks spaced 32 inch on centers

PTB · Woodαw0.60

Sound absorption blocks spaced 24 inch on centers

PTB · Reference surfaceαw0.40

telescopic stands

PTB · Reference surfaceαw0.25

carpet on CLS (g)

PTB · Reference surfaceαw0.15

Loop pile carpet, surface-treated

PTB · Reference surfaceαw0.35

Hairy carpet on 3 mm felt (g)

PTB · Reference surfaceαw0.15

6 mm pile carpet bonded to open-cell foam underlay

PTB · Reference surfaceαw0.10

6 mm pile carpet bonded to closed-cell foam underlay

PTB · Reference surfaceαw0.35

carpet with foam below

PTB · Reference surfaceαw0.30

Loop pile carpet on felt underlay with waffle structure

PTB · Reference surfaceαw0.30

Carpet, 2 cm, thickness 20 mm

PTB · Reference surfaceαw0.15

Carpet 6 mm, thickness 6 mm

PTB · Reference surfaceαw0.10

Carpet, flat, loop pile, 5.3 mm, 1.98 kg/m², 250 Rayl

PTB · Reference surfaceαw0.35

Carpet, loop pile, on felt underlay

PTB · Reference surfaceαw0.15

Carpet, loop pile, impregnated base fabric, 4.5 mm, 1.87 kg/m², 820 Rayl

PTB · Reference surfaceαw0.55

Carpet heavy, on hairfelt or foam rubber

PTB · Reference surfaceαw0.20

unrope carpet (g)

PTB · Reference surfaceαw0.30

Carpet: Woven wool loop, 2.3 kg/m², 9.5 mm pile height, no pad

PTB · Reference surfaceαw0.20

Carpet: Woven wool loop, 1.4 kg/m², 6.4 mm pile height, no pad

PTB · Reference surfaceαw0.20

Carpet: Woven wool loop, 1.2 kg/m², 2.4 mm pile height, no pad

PTB · Reference surfaceαw0.20

Moquette floor (B)

PTB · Reference surfaceαw0.55

Floors, carpet, heavy, over foam rubber

PTB · Reference surfaceαw0.25

Floors, 10 mm soft carpet on concrete

PTB · Mineral woolαw0.70

Thermal Ceramics Egi-Dämmplatte EP/V mineral fiber panel

PTB · Mineral woolαw0.90–1.00

Thyssen Egi-EP/VII mineral fiber insulation board

PTB · Fabricαw0.80

Thyssen Schalker Verein Organit Solclip plastic panel