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Division 31

SEC. 91.3108. TELECOMMUNICATIONS AND BROADCAST TOWERS.

Los Angeles Building Code — LAMC Chapter IX · 2026-08 edition · updated 2026-09-09 · Los Angeles

(Added by Ord. No. 183,580, Eff. 7/11/15.)

Section 3108 of the CBC is adopted by reference, except Section 3108.1 of the CBC is not adopted; and, in lieu, LAMC Subsection 91.3108.1 is added. (Amended by Ord. No. 185,587, Eff. 7/16/18.)

91.3108.1. General. Towers shall be designed and constructed in accordance with the provisions of TIA-222. For structural design purposes, telecommunication towers shall be considered to be a "Class III Structure" subject to an Importance Factor of 1.50, as set forth in Table 2-3, Importance Factors, of TIA-222. Towers shall be designed for seismic loads; exceptions related to seismic design listed in Section 2.7.3 of TIA-222 shall not apply. In Section 2.6.6.2 of TIA 222, the horizontal extent of Topographic Category 2, escarpments, shall be 16 times the height of the escarpment.

EXCEPTION: Single free-standing poles used to support antennas not greater than 75 feet (22.86 m), measured from the top of the pole to grade, shall not be required to be noncombustible. (Amended by Ord. No. 185,587, Eff. 7/16/18.)

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▸Contents — Los Angeles Building Code — LAMC Chapter IX
Los Angeles Building Code — LAMC Chapter IX
  1. Chapter IX
  2. Chapter IX — BUILDING REGULATIONS
  3. Division 1
  4. Division 2
  5. Division 3
  6. Division 4
  7. Division 5
  8. Division 6
  9. Division 7
  10. Division 8
  11. Division 9
  12. Division 10
  13. Division 11
  14. Division 12
  15. Division 13
  16. Division 14
  17. Division 15
  18. Division 16
  19. Division 17
  20. Division 18
  21. Division 19
  22. Division 20
  23. Division 21
  24. Division 22
  25. Division 23
  26. Division 24
  27. Division 25
  28. Division 26
  29. Division 27
  30. Division 28
  31. Division 29
  32. Division 30
  33. ▸Division 31
    Overview
    1. SEC. 91.3100. BASIC PROVISIONS.
    2. SEC. 91.3106. MARQUEES.
    3. SEC. 91.3108. TELECOMMUNICATIONS AND BROADCAST TOWERS.
    4. SEC. 91.3109. SWIMMING POOL ENCLOSURES AND SAFETY DEVICES.
    5. SEC. 91.3112. PATIO COVERS.
  34. Division 32
  35. Division 33
  36. Division 34
  37. Division 35
  38. Division 61
  39. Division 62
  40. Division 63
  41. Division 67
  42. Division 70
  43. Division 71
  44. Division 72
  45. Division 82
  46. Division 83
  47. Division 85
  48. Division 88
  49. Division 89
  50. Division 90
  51. Division 91
  52. Division 92
  53. Division 93
  54. Division 94
  55. Division 95
  56. Division 96
  57. Division 5 — REGISTRATION
  58. Division 16A
  59. Division 17
  60. Division 18
  61. Division 19
  62. Division 20
  63. Division 21
  64. Division 17
  65. Division 18
  66. Division C
  67. Division D

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