Table 403.3 Required Outdoor Ventilation Air. …

1 Table Required Outdoor Ventilation Air. change to read as Spaces, change Outdoor air for toilet rooms from 75 cfm to 50 cfm . Table Outdoor Ventilation AIRESTIMATEDMAXIMUMOUTDOOR AIROCCUPANTLOAD,[Cubic feet perPERSONS PERminute (cfm) perOCCUPANCY1,000 SQUARE person] UNLESSCLASSIFICATIONFEETaNOTEDeCorrectio nal facilitiesCellswithout plumbing fixtures2020with plumbing fixturesg, h2020 Dining halls10015 Guard stations4015 Dry cleaners, laundriesCoin-operated dry cleaner2015 Coin-operated laundries2015 Commercial dry cleaner3030 Commercial laundry1025 Storage, pick up3035 EducationAuditoriums15015 Classrooms5015 Corridors cfm/ft2 Laboratories3020 Libraries2015 Locker roomsh cfm/ft2 Music rooms5015 Smoking loungesb,g7060 Training shops3020 Food and beverage serviceBars.

2 Cocktail lounges10030 Cafeteria, fast food10020 Dining rooms7020 Kitchens (cooking)f,g2015 Hospitals, nursing andconvalescent homesAutopsy roomsb cf m/ft2 Medical procedure rooms2015 Operating rooms2030 Patient rooms1025 Physical therapy2015 Recovery and ICU2015 Hotels, motels, resorts anddormitoriesAssembly rooms12015 Bathroomsg, h 35 Bedrooms 30 cfm per roomConference rooms5020 Dormitory sleeping areas2015 Gambling casinos12030 Living rooms 30 cfm per roomLobbies3015 OfficesConference rooms5020 Office spaces720 Reception areas6015 Telecommunication centersand data entry6020 ESTIMATEDMAXIMUMOUTDOORAIROCCUPANT(Cubic feet perLOAD,PERSONS minute (cfm)OCCUPANCYPER 1,000per person)

3 CLASSIFICATIONSQUARE FEETaUNLESSNOTEDePrivate dwellings, single andmultipleGarages, common for multipleunitsbGarages, separate for eachdwellingKitchensgLiving areascToilet rooms and bathroomsg, h Based uponnumber ofbedrooms. firstbedroom: 2;each additionalbedroom: 1 cfm/ft2100 cfm per car100 cfmintermittent or25 air changesper houraor 15cfm per person,whichever isgreaterMechanicalexhaust capacityof 50 cfmintermittent or20 cfmcontinuousPublic spacesCorridors and utilitiesElevator cargLocker roomshShower rooms(per shower head)g,hSmoking loungesb,hToilet roomsg,h cfm/ft250 cfmintermittent or20 cfmcontinuous6050cfm per watercloset or urinalRetail stores, sales floors andshowroom floorsBasement and street rooms cfm/ft2 Malls and arcades cfm/ft2 Shipping and receiving cfm/ft2 Smoking loungesb7060 Storage rooms cfm/ft2 Upper floors cfm/ft2 Warehouses cfm/ft2 SpecialtyshopsAutomotive motor-fuel-dispensing stations cfm/ft2 Barber2515 Beauty2525 Clothiers, furniture cfm/ft2 Embalming cfm/ft2 Florists815 Hardware, drugs.

4 Fabrics815 ESTIMATEDMAXIMUMOUTDOOR AIROCCUPANT(Cubic feet perLOAD,PERSONS minute (cfm)OCCUPANCYPER 1,000per person)CLASSIFICATIONSQUARE FEETaUNLESSNOTEDeSpecialty shops continued50 cfmintermittent or20 Nail salonb, i cfm continuousper stationPet Shops cfm/ft2 Reducing salons2015 Supermarkets815 Sports and amusementBallrooms and discos10025 Bowling alleys (seating areas)7025 Game rooms7025 Ice arenas cfm/ft2 Playing floors (gymnasiums)3020 Spectator areas15015 Swimming pools (pool and deckarea) cfm/ft2 StorageRepair garages, enclosed parkinggaragesd cfm/ft2 Warehouses cfm/ft2 TheatersAuditoriums15015 Lobbies15020 Stages, studios7015 Ticket booths6020 TransportationPlatforms10015 Vehicles15015 Waiting rooms10015 WorkroomsBank vaults515 Darkrooms cfm/ft2 Duplicating, printing cfm/ft2 Meat processingc1015 Pharmacy2015 Photo studios1015 For SI.

5 1 cubic foot per minute = , 1 ton = 908 kg,1 cubic foot per minute per square foot = (s m2), C = [( F)-32] , 1 square foot = Based upon net floor Mechanical exhaust Required and the recirculation of air from such spaces as permitted by Section is prohibited (see , Items 1 and 3).c. Spaces unheated or maintained below50 F are not covered by these requirements unless the occupancy is Ventilation systems in enclosed parking garages shall comply with Section Where the Ventilation rate is expressed in cfm/ft2, such rate is based upon cubic feet per minute per square foot of the floor The sum of the Outdoor and transfer air from adjacent spaces shall be sufficient to provide an exhaust rate of not less than Transfer air permitted in accordance with Section Mechanical exhaust is Required and recirculation is prohibited except that recirculation shall be permitted where the resulting supplyair stream consists of not more than 10 percent air recirculated from these spaces (see Section , Items 2 and 4).

6 I. The Required exhaust system shall capture the contaminants and odors at their source.