DG-1110-3-119
Design Guide: Band Training Facilities
Practical Approaches for Accoustic Construction
March 1983
B. Small Group Practice Rooms
Small Group Practice Rooms, 300 to 350 square feet in
area, have a Noise Criterion of 30, and sound levels in
the room may reach 95 dB. Thus, if adjacent, noise should
be reduced by about 65 dB, requiring barriers rated STC
65. Again, this is a reasonable-not ultimat-goal. Non-
adjacent location is advisable.
The isolation techniques described for the Individual Prac-
tice Rooms generally apply, but with more emphasis on
superior performance. Solid masonry walls should be
upgraded with resiliently attached gypsum board or plas-
ter walls (always backed with acoustical batt insulation),
as illustrated in Figure 5-8.
5-9
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