Technical Booklet G Resistance to the Passage of Sound·Page 109·7.9
Method A – Entrance halls, corridors and hallways
Entrance halls, corridors or hallways must be covered with an area of Class C absorber or better that is equal to or greater than the floor area, typically applied to the ceiling.
For entrance halls, corridors or hallways, cover an area equal to or greater than the floor area, with a Class C absorber or better. It will normally be convenient to cover the ceiling area with the additional absorption.
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