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Buildings and structures containing materials that readily support combustion or that pose a physical hazard shall be classified as Group H-3. Such materials shall include, but not be limited to, the following:
  • Class I, II or IIIA flammable or combustible liquids that are used or stored in normally closed containers or systems pressurized at 15 pounds per square inch gauge (103.4 kPa) or less
  • Combustible fibers , other than densely packed baled cotton , where manufactured, generated or used in such a manner that the concentration and conditions create a fire or explosion hazard based on information prepared in accordance with Section 414.1.3
  • Consumer fireworks , 1.4G (Class C, Common)
  • Cryogenic fluids , oxidizing
  • Flammable solids
  • Organic peroxides , Class II and III
  • Oxidizers, Class 2
  • Oxidizers , Class 3, that are used or stored in normally closed containers or systems pressurized at 15 pounds per square inch gauge (103 kPa) or less
  • Oxidizing gases
  • Unstable (reactive) materials , Class 2
  • Water-reactive materials , Class 2
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