IM 907 / Page 14 of 24
Performance Data
Type of Building or Room Sound Zone
Sound
Zone
Apartments, Class Rooms, Court Rooms, Executive Ofces, Hospitals, Libraries,
Museums, Residences
I
General Ofces, Hotel Dining Rooms, Private Ofces, Recreation Rooms,
Show Rooms, Small Stores, Tea Rooms, Upper Floors at Department Stores
II
Bank Lobbies, Cafeterias, Drug Stores, General Ofces, Grocery Stores,
Gymnasiums, Main Floors at Department Stores, Public Buildings, III
Post Ofces, Restaurants, Service Stations
Factories, Foundries, Garages, Machine Shops, Ofce Machinery Rooms,
Packing Plants, Shipping Platforms, Steel Mills, Stadium Common Areas
II-VII
Boiler Works, Forge Shops, Round Houses, Steel Fabricating Shops VII
Table 12. Sound Class Denitions