IBC 2021 · Model

Chapter 3: Occupancy Classification And Use

77 sections in this chapter of the IBC 2021 model text — not Model's amended edition.

301.1 General The provisions of this chapter shall control the classification of all buildings and structures as to occupancy and use. Different classifications of occupancy and use represent varying levels of hazard and risk to building occupants and adjacent properties.

  1. 301.1General
  2. 302.1Occupancy classification
  3. 302.2Use designation
  4. 303.1Assembly Group A
  5. 303.1.1Small buildings and tenant spaces
  6. 303.1.2Small assembly spaces
  7. 303.1.3Associated with Group E occupancies
  8. 303.1.4Accessory to places of religious worship
  9. 303.1.5Special amusement areas
  10. 303.2Assembly Group A-1
  11. 303.3Assembly Group A-2
  12. 303.4Assembly Group A-3
  13. 303.5Assembly Group A-4
  14. 303.6Assembly Group A-5
  15. 304.1Business Group B
  16. 304.2Airport traffic control towers
  17. 304.3Ambulatory care facilities
  18. 305.1Educational Group E
  19. 305.1.1Accessory to places of religious worship
  20. 305.2Group E, day care facilities
  21. 305.3Storm shelters in Group E occupancies
  22. 306.1Factory Industrial Group F
  23. 306.2Moderate-hazard factory industrial, Group F-1
  24. 306.3Low-hazard factory industrial, Group F-2
  25. 307.1High-hazard Group H
  26. 307.1.1Uses other than Group H
  27. 307.2Hazardous materials
  28. 307.3High-hazard Group H-1
  29. 307.4High-hazard Group H-2
  30. 307.5High-hazard Group H-3
  31. 307.6High-hazard Group H-4
  32. 307.7High-hazard Group H-5
  33. 307.8Multiple hazards
  34. 308.1Institutional Group I
  35. 308.2Institutional Group I-1
  36. 308.2.1Condition 1
  37. 308.2.2Condition 2
  38. 308.3Institutional Group I-2
  39. 308.3.1Occupancy conditions
  40. 308.3.2Five or fewer persons receiving medical care
  41. 308.4Institutional Group I-3
  42. 308.4.1Condition 1
  43. 308.4.2Condition 2
  44. 308.4.3Condition 3
  45. 308.4.4Condition 4
  46. 308.4.5Condition 5
  47. 308.5Institutional Group I-4, day care facilities
  48. 309.1Mercantile Group M
  49. 309.2Quantity of hazardous materials
  50. 309.3Motor fuel-dispensing facilities
  51. 310.1Residential Group R
  52. 310.2Residential Group R-1
  53. 310.3Residential Group R-2
  54. 310.4Residential Group R-3
  55. 310.5Residential Group R-4
  56. 311.1Storage Group S
  57. 311.1.1Accessory storage spaces
  58. 311.2Moderate-hazard storage, Group S-1
  59. 311.3Low-hazard storage, Group S-2
  60. 312.1General
  61. + 17 more sections

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