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From the `06 IBC, Section 307.4 High-hazard Group H-2. [F]
Buildings and structures containing materials that pose a deflagration
hazard or a hazard from accelerated burning shall be classified as
Group H-2. Such materials shall include, but not be limited to, the
following:
Class I, II or IIIA flammable or combustible liquids which are used
or stored in normally open containers or systems, or in closed
containers or systems pressurized at more than 15 psi (103.4 kPa)
gage.
Combustible dusts
Cryogenic fluids, flammable
Flammable gases
Organic peroxides, Class I
Oxidizers, Class 3, that are used or stored in normally open containers
or systems, or in closed containers or systems pressurized at more
than 15 psi (103 kPa) gage
Pyrophoric liquids, solids and gases, nondetonable
Unstable (reactive) materials, Class 3, nondetonable
Water-reactive materials, Class 3
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