NFPA 13 Occupancy Hazard Classifications
Automobile parking
Ordinary Hazard (Group 1)
Automobile showrooms
Ordinary Hazard (Group 1)
Bakeries
Ordinary Hazard (Group 1)
Beverage manufacturing
Ordinary Hazard (Group 1)
Canneries
Ordinary Hazard (Group 1)
Dairy products manufacturing
Ordinary Hazard (Group 1)
Dairy products processing
Ordinary Hazard (Group 1)
Electronic Plants
Ordinary Hazard (Group 1)
Garages
Ordinary Hazard (Group 1)
Glass and glass products manufacturing
Ordinary Hazard (Group 1)
Laundries
Ordinary Hazard (Group 1)
Library
Ordinary Hazard (Group 1)
Parking Garage
Ordinary Hazard (Group 1)
Restaurant Kitchen
Ordinary Hazard (Group 1)
Restaurant Service Areas
Ordinary Hazard (Group 1)
Agricultural facilities
Ordinary Hazard (Group 2)
Barns
Ordinary Hazard (Group 2)
Cereal Mills
Ordinary Hazard (Group 2)
Chemical plants — ordinary
Ordinary Hazard (Group 2)
Confectionery products
Ordinary Hazard (Group 2)
Distilleries
Ordinary Hazard (Group 2)
Exterior loading dock
Ordinary Hazard (Group 2)
Exterior loading docks only used for loading and unloading of ordinary combustibles
Ordinary Hazard (Group 2)
Feed Mills
Ordinary Hazard (Group 2)
Horse Stables
Ordinary Hazard (Group 2)
Leather goods manufacturing
Ordinary Hazard (Group 2)
Libraries — large stack room areas
Ordinary Hazard (Group 2)
Loading dock
Ordinary Hazard (Group 2)
Machine shops
Ordinary Hazard (Group 2)
Mercantile
Ordinary Hazard (Group 2)
Metal working
Ordinary Hazard (Group 2)
Paper and pulp mills
Ordinary Hazard (Group 2)
Paper process plants
Ordinary Hazard (Group 2)
Piers and wharves
Ordinary Hazard (Group 2)
Plastics fabrication, including blow molding, extruding, and machining; excluding operations using combustible hydraulic fluids
Ordinary Hazard (Group 2)
Post Offices
Ordinary Hazard (Group 2)
Printing and publishing
Ordinary Hazard (Group 2)
Racetrack stable/kennel areas, including those stable/kennel areas, barns, and associated buildings at state, county, and local fairgrounds
Ordinary Hazard (Group 2)
Repair garages
Ordinary Hazard (Group 2)
Resin application area
Ordinary Hazard (Group 2)
Stages
Ordinary Hazard (Group 2)
Textile manufacturing
Ordinary Hazard (Group 2)
Tire manufacturing
Ordinary Hazard (Group 2)
Tobacco products manufacturing
Ordinary Hazard (Group 2)
Wood machining
Ordinary Hazard (Group 2)
Wood product assembly
Ordinary Hazard (Group 2)
Library stack areas, which are more akin to shelf storage or record storage, as defined in NFPA 232
Ordinary group 1
Extra hazard (Group 2)
occupancies contain more than small amounts of flammable or combustible liquids, usually in open systems where rapid evaporation can occur when these liquids are subjected to high temperatures.
Ordinary hazard (Group 1)
occupancies shall be defined as occupancies or portions of other occupancies where combustibility is low, quantity of combustibles is moderate, stockpiles of combustibles do not exceed 8 ft (2.4 m), and fires with moderate rates of heat release are expected.
Ordinary hazard (Group 2)
occupancies shall be defined as occupancies or portions of other occupancies where the quantity and combustibility of contents are moderate to high, stockpiles of contents with moderate rates of heat release do not exceed 12 ft (3.66 m), and stockpiles of contents with high rates of heat release do not exceed 8 ft (2.4 m).
Extra hazard (Group 1)
occupancies shall be defined as occupancies or portions of other occupancies where the quantity and combustibility of contents are very high and dust, lint, or other materials are present, introducing the probability of rapidly developing fires with high rates of heat release but with little or no combustible or flammable liquids.
Extra hazard (Group 2)
occupancies shall be defined as occupancies or portions of other occupancies with moderate to substantial amounts of flammable or combustible liquids or occupancies where shielding of combustibles is extensive.
Aircraft hangars (except as governed by NFPA 409)
Extra hazard (Group 1)
Combustible hydraulic fluid use areas
Extra hazard (Group 1)
Die casting
Extra hazard (Group 1)
Metal extruding
Extra hazard (Group 1)
Plywood and particleboard manufacturing
Extra hazard (Group 1)
Printing [using inks having flash points below 100°F (38°C)]
Extra hazard (Group 1)
Rubber reclaiming, compounding, drying, milling, vulcanizing
Extra hazard (Group 1)
Textile picking, opening, blending, garnetting, or carding, combining of cotton, synthetics, wool shoddy, or burlap
Extra hazard (Group 1)
Upholstering with plastic foams
Extra hazard (Group 1)
Asphalt saturating
Extra hazard (Group 2)
Flammable liquids spraying
Extra hazard (Group 2)
Flow coating
Extra hazard (Group 2)
Manufactured home or modular building assemblies (where finished enclosure is present and has combustible interiors)
Extra hazard (Group 2)
Open oil quenching
Extra hazard (Group 2)
Plastics manufacturing
Extra hazard (Group 2)
Solvent cleaning
Extra hazard (Group 2)
Varnish and paint dipping
Extra hazard (Group 2)
Classroom
Light Hazard
Hospital Room
Light Hazard
Animal hospitals
Light hazard
Animal shelters
Light hazard
Business
Light hazard
Churches
Light hazard
Classrooms
Light hazard
Clubs
Light hazard
Convalescent homes
Light hazard
Data Processing Centers
Light hazard
Eaves and overhangs, of combustible construction with no combustibles beneath
Light hazard
Educational
Light hazard
Hotel Sleeping Room
Light hazard
Institutional
Light hazard
Kennels
Light hazard
Libraries, except large stack rooms
Light hazard
Library
Light hazard
Museums
Light hazard
Nursing homes
Light hazard
Offices
Light hazard
Residential
Light hazard
Restaurant Seating Areas
Light hazard
Theaters and auditoriums, excluding stages and prosceniums
Light hazard
Unused attics
Light hazard
Veterinary facilities
Light hazard
