Technical Booklet G Resistance to the Passage of Sound·Page 109·7.11
Method A – Application of absorptive material
Method A can be satisfied using proprietary acoustic ceilings, but absorptive material may be applied to any surface facing into the space.
Method A can generally be satisfied by the use of proprietary acoustic ceilings. However, the absorptive material can be applied to any surface that faces into the space.
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