320
Ceilings: Acoustics
In those spaces where sound isolation between the platform and the floor
below is critical, the finished ceiling can be separated from the platform by
means of resilient clips.
325.4
FINISHED CEILING
The lower surface of the ceiling should have an absorption capacity
between NRC .60 and .80 in many areas of the hospital. Where
continuous, glued-on finished ceilings are used, a high sound-attenuating
material (such as USG Aurotone Tile) with a ceiling sound transmission
class of 45-49 should be specified to reduce sound transmission over the
partition from room to room.
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