Page 71 - 2018_IFC

DEFINITIONS

Division 1.3 Combustible fibers, other than densely packed baled
Division 1.4 cotton, where manufactured, generated or used in
Division 1.5 such a manner that the concentration and conditions
Division 1.6 create a fire or explosion hazard based on
information prepared in accordance with Section
Organic peroxides, unclassified detonable 414.1.3 of the International Building Code
Oxidizers, Class 4 Consumer fireworks, 1.4G (Class C, Common)
Unstable (reactive) materials, Class 3 detonable, and Cryogenic fluids, oxidizing
Class 4
Flammable solids
Occupancies containing explosives not classified as H- Organic peroxides, Class II and III
1. The following occupancies containing explosive mate- Oxidizers, Class 2
rials shall be classified as follows: Oxidizers, Class 3, that are used or stored in normally
1. Division 1.3 explosive materials that are used and closed containers or systems pressurized at 15
maintained in a form where either confinement or pounds per square inch gauge (103 kPa) or less
configuration will not elevate the hazard from a Oxidizing gases
mass fire hazard to mass explosion hazard shall be Unstable (reactive) materials, Class 2
allowed in Group H-2 occupancies. Water-reactive materials, Class 2
High-hazard Group H-4. Buildings and structures con-
2. Articles, including articles packaged for shipment,
that are not regulated as a Division 1.4 explosive taining materials that are health hazards shall be classified
under Bureau of Alcohol, Tobacco, Firearms and as Group H-4. Such materials shall include, but not be lim-
Explosives regulations, or unpackaged articles used ited to, the following:
in process operations that do not propagate a detona- Corrosives
tion or deflagration between articles shall be Highly toxic materials
allowed in H-3 occupancies. Toxic materials
High-hazard Group H-2. Buildings and structures con- High-hazard Group H-5. Semiconductor fabrication
taining materials that pose a deflagration hazard or a haz- facilities and comparable research and development areas
ard from accelerated burning shall be classified as Group in which hazardous production materials (HPM) are used
H-2. Such materials shall include, but not be limited to, the and the aggregate quantity of materials is in excess of
following: those listed in Tables 5003.1.1(1) and 5003.1.1(2) shall be
classified as Group H-5. Such facilities and areas shall be
Class I, II or IIIA flammable or combustible liquids designed and constructed in accordance with Section
that are used or stored in normally open containers 415.11 of the International Building Code.
or systems, or in closed containers or systems [BG] Institutional Group I. Institutional Group I occu-
pressurized at more than 15 pounds per square inch pancy includes, among others, the use of a building or
gauge (103.4 kPa) structure, or a portion thereof, in which care or supervision
Combustible dusts where manufactured, generated or is provided to persons who are or are not capable of self-
used in such a manner that the concentration and preservation without physical assistance or in which per-
conditions create a fire or explosion hazard based on sons are detained for penal or correctional purposes or in
information prepared in accordance with Section which the liberty of the occupants is restricted. Institu-
414.1.3 of the International Building Code tional occupancies shall be classified as Group I-1, I-2, I-3
Cryogenic fluids, flammable or I-4.
Flammable gases
Organic peroxides, Class I [BG] Institutional Group I-1. Institutional Group I-1
occupancy shall include buildings, structures or por-
Oxidizers, Class 3, that are used or stored in normally tions thereof for more than 16 persons, excluding staff,
open containers or systems, or in closed containers or who reside on a 24-hour basis in a supervised environ-
systems pressurized at more than 15 pounds per ment and receive custodial care. Buildings of Group I-1
square inch gauge (103.4 kPa)
shall be classified as one of the occupancy conditions
Pyrophoric liquids, solids and gases, nondetonable indicated below. This group shall include, but not be
Unstable (reactive) materials, Class 3, nondetonable limited to, the following:
Water-reactive materials, Class 3
Alcohol and drug centers
High-hazard Group H-3. Buildings and structures con- Assisted living facilities
taining materials that readily support combustion or that Congregate care facilities
pose a physical hazard shall be classified as Group H-3. Group homes
Such materials shall include, but not be limited to, the fol- Halfway houses
lowing: Residential board and care facilities
Class I, II or IIIA flammable or combustible liquids Residential board and custodial care facilities
that are used or stored in normally closed containers Social rehabilitation facilities
or systems pressurized at 15 pounds per square inch [BG] Condition 1. This occupancy condition shall
gauge (103.4 kPa) or less. include buildings in which all persons receiving cus-

38 2018 INTERNATIONAL FIRE CODE ®
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