SD- ribbed bearing

With test report for sound damping of impact noise. Sound damping bearing underneath flight of

stairs, floors, joint stems etc. help to separate subsonic noise and impact sounds in residential buildings,

offices and hospitals. Profiled, non-reinforced elastomer bearings are especially suitable in this case due

to their soft absorption qualities.

A part from sound absorption, they also ensure a controlled load distribution and prevent excessive edge

compression and spalling at the components. Improvement in evaluated impact noise protection is at

least 27 dB for compressions between 0.1 and 1.0 N/mm² as compared to a rigid support. 31 dB is

attained at 0.3 N/mm² compression.

Sound damping of impact noise

SD-ribbed bearing

SD-ribbed bearing

3

M e m b e r o f B e s a g r o u p

R

M e m b e r o f B e s a g r o u p

R

21

Sound damping bearingType SD-ribbed bearing

Supply: as roll 10 m long, 200 mm width or cutted on demand.

The profil is notched. This allows a separating in 50 or 100 mm wide stripes.

SD-ribbed bearing

Separating notch each 50 mm

© Leschuplast GLT

22

M e m b e r o f B e s a g r o u pM e m b e r o f B e s a g r o u p

R

Sound damping of impact noise

Sound damping bearingType Z, TD 21 SD, Type B

Type Z TD 21 SD

The sound damping elements type Z, type B and TD 21 SD include the high reduction of impact noise of

the Leschuplast GLT SD-ribbed bearing and ensure, that no dirt reduces the function of sound damping.

Caused by the notches type Z might be fitted to the situation on site easily. Not needed parts of the foam

might be cutted of. Special dimensions might be produced on demand.

1000 mm

550 mm

1200 mm

centr

al are

a

ca. 3

50 m

m

Leschuplast GLT SD-ribbed bearing50 x 10 mm

10 mm

90 mm

up to

first no

tch

1000 mmor

1200 mm

120 m

m

Leschuplast GLT SD-ribbed bearing50 x 10 mm

7 notches10 mm each

Sound damping element type B for stairs (350 x 1000 mm)

© Leschuplast GLT © Leschuplast GLT

Summary of sound damping test of the SD-ribbed bearing

The Leschuplast GLT SD-ribbed bearing can be used in a wide pressure load range from 0.1 N/mm² to 1.0 N/mm² due to excellent sound absorption properties. In this case, evaluated impact noise reduction of at least 27 dB is achieved. An evaluated impact noise reduction of 31 dB is attained with an optimum design at a pressure load of 0.3 N/mm².

M e m b e r o f B e s a g r o u p

R

3

M e m b e r o f B e s a g r o u p

R

M e m b e r o f B e s a g r o u p

R

23

Sound damping bearingType SD-ribbed bearing

40

35

30

25

20

10

5

0

0 0,1 0,3 0,5 0,7 1,0 1,2

L w in dB

29 272830

31

15

N/mm²

Eva

luate

d im

pact

nois

e r

educt

ion

Pressure load in N/mm² on the bearing

Test report : Nr. 1440-001-13 on 24.04.2013 SG-Bauakustik, Institut für schalltechnische Produktoptimierung

Specification: sound damping bearing ........ mm width, thickness 10 mm, with sound damping core, width ........ mm, with test report about an impact sound insulation up to 31 dB, supply and correct technical setting. Leschuplast GLT type TD 21 SD

Specification: sound damping bearing ........ mm width, thickness 10 mm, with test report about an impact sound insulation up to 31 dB, supply and correct technical setting. Leschuplast GLT type SD-ribbed bearing

Specification: sound damping bearing ........ mm width, thickness 10 mm, with sound damping core, width ........ mm, with test report about an impact sound insulation up to 31 dB, supply and correct technical setting. Leschuplast GLT type Z

Specification: sound damping bearing ........ mm width, thickness 10 mm, with sound damping core, width ........ mm, with test report about an impact sound insulation up to 31 dB, supply and correct technical setting. Leschuplast GLT type B

© Leschuplast GLT