NO BUILDING / ROOM AIR CHANGE RATES (ACR) (1/hr) 1 All spaces in general 2 Court Houses 4 - 10 3 Attic spaces for cooling 12 - 15 Min 4 4 Dental Centers 8 - 12 8 - 12 5 Auditoriums 8 - 15 6 - 10 6 Department Stores 7 Bakeries 8 Dining Halls 12 - 15 4 - 10 20 9 Banks 10 Dining rooms (restaurants) 11 Barber Shops 12 Dress Shops 6 - 10 13 Bars 20 - 30 14 Drug Shops 6 - 10 15 Beauty Shops 6 - 10 16 Engine rooms 4-6 17 Boiler rooms 15 - 20 18 Factory buildings, ordinary 2 - 4 19 Bowling Alleys 12 6 - 10 2-4 10 - 15 20 Factory buildings, fumes and moisture 10 - 15 21 Cafeterias 12 - 15 22 Fire Stations 4 - 10 23 Churches 8 - 15 24 Foundries 15 - 20 25 Club rooms 26 Galvanizing plants 12 20 - 30 27 Clubhouses 20 - 30 28 Garages repair 20 - 30 20 - 30 29 Cocktail Lounges 30 Garages storage 4-6 31 Computer Rooms 15 - 20 32 Homes, night cooling 10 - 18 33 Laundries 10 - 15 34 Jewelry shops 6 - 10 35 Libraries, public 36 Kitchens 15 - 60 12 - 15 4 37 Lunch Rooms 38 Restaurants 8 - 12 39 Luncheonettes 12 - 15 40 Retail 6 - 10 41 Nightclubs 20 - 30 42 School Classrooms 4 - 12 43 Malls 6 - 10 44 Shoe Shops 6 - 10 45 Medical Centers 8 – 12 46 Shopping Centers 6 - 10 47 Medical Clinics 8 - 12 48 Shops, machine 5 49 Medical Offices 8 - 12 50 Shops, paint 15 - 20 15 - 20 51 Mills, paper 15 - 20 52 Shops, woodworking 5 53 Mills, textile general buildings 54 Substation, electric 5 - 10 5 4 55 Mills, textile dye houses 15 - 20 56 Supermarkets 4 - 10 57 Municipal Buildings 4 - 10 58 Town Halls 4 - 10 59 Museums 12 - 15 20 - 30 60 Taverns 61 Offices, public 62 Theaters 8 - 15 63 Offices, private 4 Turbine rooms, electric 5 - 10 64 Police Stations 4 - 10 65 Warehouses 2 66 Post Offices 4 - 10 67 Waiting rooms, public 68 Precision Manufacturing 69 Pump rooms 3 4 10 - 50 5