Acoustic damping of pipes, ducts and installations
Technical installations can be noisy — flowing water, ventilation, pumps. Sound insulation reduces it.
Key figures
Materials
** Heavy mineral wool (80-150 kg/m³), lead foil, viscoelastic foams, elastomeric foam
Goal
** Reduction in dB(A) at relevant frequencies
Principle
** Mass, damping, decoupling
Frequency range
** 50 Hz to 8000 Hz (relevant for installations)
Standard
** DS 490 (sound conditions in buildings), EN 14366 (sound from installations)
BR18 requirement
** §358 — sound conditions for installations in dwellings and offices
Typical damping requirement
** 25-40 dB reduction during night-time hours in dwellings
Typical brands
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