Technical Booklet G Resistance to the Passage of Sound·Page 110·7.16
Entrance Halls Absorption Requirements
Entrance halls must provide a minimum of 0.20 m2 total absorption area per cubic metre of volume, with additional absorptive material distributed over available surfaces.
For entrance halls, provide a minimum of 0.20 m2 total absorption area per cubic metre of the volume. The additional absorptive material should be distributed over the available surfaces.
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