DIN 4109 Beiblatt 3:1996-06

Действует

Sound insulation in buildings - Calculation of R'<(Index)w,R> for assessing suitability as defined in DIN 4109 on the basis of the sound reduction index R<(Index)w> determined in laboratory tests — 4 стр.

Описание Изменения Ссылки Версии

ICS

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