BS 5821-2:1984

Заменен

Methods for rating the sound insulation in buildings and of building elements, Method for rating the impact sound insulation — 12 стр.

Заменен на

BS EN ISO 717-2:1997

ICS

91.120.20 Acoustics in building. Sound insulation / Акустика в зданиях. Звукоизоляция