scope:

This guideline aims at presenting

• principal parameters of influence and the structural characteristics of raised access floors and hollow floors which affect the horizontal airborne and impact sound transmission between rooms, as well as the improvement of impact sound insulation of ceilings for the vertical direction,
• effects of such floors on room acoustics (also in combination with ventilation elements) and
• fundamental correlations as far as footfall noises are concerned (sound level in the room in question when someone is walking on the floor)

Furthermore, there is a description and outline of how

• required acoustical characteristics of raised access floors and hollow floors can be determined taking into account the other flanking building elements and
• structures have to be designed to meet specified acoustical requirements (e.g. for a tender).

This guideline deals with raised access floors built of loosely laid panels which are mounted on a substructure, and with hollow floors; for the purpose of this guideline, the latter term refers to jointless load bearing layers resting on a substructure.