Manual

113
Noise Curves
Recommendations
Type of Room -
Space Type
Recom-
mended
NC and
RNC
Curve
Equivalent
Sound
Level
RC curve
Concert halls 15-18 - -
Small auditoriums 25-30 35-39 -
Large auditoriums 20-25 30-35 -
Broadcast studios 15-25 16-35 -
Drama theaters 20-25 30-35 -
Private residences 25-40 35-48 25-30(N)
Schools 25-35 35-40 25-40 (N)
Hotels 25-50 35-57 25-45 (N)
Offices 25-40 35-48 25-35 (N)
Type of Room -
Space Type
Recom-
mended
NC and
RNC
Curve
Equivalent
Sound
Level
RC curve
Conference rooms 25-35 35-44 25-35 (N)
Hospitals and clinics 25-45 35-52 25-40 (N)
Movie theaters 30-40 39-48 -
Churches 30-35 39-44 25-35 (N)
Courtrooms 30-35 39-44 25-35 (N)
Libraries 30-35 44-48 30-40 (N)
Restaurants 40-45 48-52 -
Light maintenance
shop
45-55 52-62 -
Shops and garages 50-60 57-67 -