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Chapter 31B — PUBLIC POOLS

Section 3110B

California Building Code (Title 24, Part 2) · 2022 edition · updated 2026-09-12 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

3110B.1 General.

No markings, designs or lettering shall be permitted on the pool shell except for slip resistant lane markings, depth marking lines and safety markings.

3110B.2 Lane markings.

Slip resistant lane lines at the bot- tom of the pool shall not exceed 12 inches (305 mm) in width.

31B-6 2022 CALIFORNIA BUILDING CODE

Copyright © 2022 by, or licensed to, International Code Council, Inc. (ALL RIGHTS RESERVED); licensed to California Building Standards Commission pursuant to License Agreement. No further reproductions is authorized. Any unauthorized reproduction or distribution is a violation of the federal copyright act and the license agreement, and subject to civil and criminal penalties thereunder.

3110B.3 Depth marking line.

There shall be installed a straight line of slip resistant tile a minimum of 4 inches (102 mm) and not greater than 6 inches (152 mm) wide of a color contrasting with the background of the pool shell across the bottom of the pool where the water depth is 4 1 /2 feet (1372 mm).

Exception: Pools having a maximum water depth of 5 feet (1524 mm) or less shall not be required to have a depth marking line.

3110B.4 Water depth markers.

3110B.4.1 Location. The water depth shall be clearly marked at the following locations:

1. Maximum depth; and

2. Minimum depth; and

3. Each end; and

4. Both sides at the shallowest and deepest part of the pool; and

5. At the break in the bottom slope between the shallow and deep portions of the pool (see also Section 3109B.3); and

6. Along the perimeter of the pool at distances not to exceed 25 feet (7620 mm).

Exception: A spa or wading pool shall have a minimum of two depth markers indicating the maximum depth. Note: For an illustration diagram pertaining to this sec- tion see Figure 31B-8.

3110B.4.2 Position. Where required by Section 3110B.4.1, depth markers shall be located in the following positions:

1. On the coping or on the deck, the depth markers shall be placed as close as possible but no more than 3 feet (914 mm) from the pool water; and

2. For pools with skimmer systems the depth markers shall be high at the waterline which typically will result in the depth markers being submerged approximately 50 percent; or

3. For pools with perimeter overflow systems where coping cantilevers over the gutter depth markers may be positioned at the face of the cantilevered coping, the back wall above the gutter or immedi- ately below the waterline which will result in the depth markers being completely submerged; or

4. For pools with rim flow gutters, depth markers shall be positioned immediately below the waterline which will result in the depth markers being com- pletely submerged.

3110B.4.3 Tolerance. Depth markers shall be positioned to indicate the water depth accurate to the nearest 6 inches (152 mm) as measured at the waterline.

3110B.4.4 Size of markers. Depth markers shall:

1. Have numerals a minimum of 4 inches (102 mm) in height and of a color contrasting with the back-

PUBLIC POOLS

ground and be marked in units of feet and inches. Abbreviations of FT and IN may be used in lieu of feet and inches; and

2. Be made of a durable material that is resistant to weathering; and

3. Be slip resistant when they are located on the pool deck.

3110B.5 No diving markers.

For pool water depths 6 feet (1830 mm) or less no diving markers with the universal sym- bol of no diving, which is a red circle with a slash through it superimposed over the image of a diver, shall be installed on the deck directly adjacent to the depth markers required by Section 3110B.4.1. No diving markers shall comply with Sec- tion 3110B.4.4(2-3).

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▸Contents — California Building Code (Title 24, Part 2)
California Building Code (Title 24, Part 2)
  1. Chapter 2 — DEFINITIONS AND ABBREVIATIONS
  2. Appendix G — FLOOD-RESISTANT
  3. Appendix L — EARTHQUAKE RECORDING
  4. Appendix M — TSUNAMI-GENERATED
  5. Appendix N — REPLICABLE
  6. Appendix O — PERFORMANCE-BASED
  7. Chapter 1 — SCOPE AND ADMINISTRATION
  8. Chapter 3 — OCCUPANCY CLASSIFICATION AND USE
  9. Chapter 4 — SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY A…
  10. Chapter 5 — GENERAL BUILDING HEIGHTS AND AREAS
  11. Chapter 6 — TYPES OF CONSTRUCTION
  12. Chapter 7 — FIRE AND SMOKE PROTECTION FEATURES
  13. Chapter 7A — MATERIALS AND CONSTRUCTION
  14. Chapter 8 — INTERIOR FINISHES
  15. Chapter 9 — FIRE PROTECTION AND LIFE SAFETY SYSTEMS
  16. Chapter 10 — MEANS OF EGRESS
  17. Chapter 11A — HOUSING ACCESSIBILITY
  18. Chapter 11B — ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMM…
  19. Chapter 12 — INTERIOR ENVIRONMENT
  20. Chapter 14 — EXTERIOR WALLS
  21. Chapter 15 — ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
  22. Chapter 16 — STRUCTURAL DESIGN
  23. Chapter 16A — STRUCTURAL DESIGN
  24. Chapter 17 — SPECIAL INSPECTIONS AND TESTS
  25. Chapter 18 — SOILS AND FOUNDATIONS
  26. Chapter 19 — CONCRETE
  27. Chapter 20 — ALUMINUM
  28. Chapter 21 — MASONRY
  29. Chapter 22 — STEEL
  30. Chapter 23 — WOOD
  31. Chapter 24 — GLASS AND GLAZING
  32. Chapter 25 — GYPSUM BOARD, GYPSUM PANEL PRODUCTS AND PLASTER
  33. Chapter 26 — PLASTIC
  34. Chapter 27 — ELECTRICAL
  35. Chapter 28 — MECHANICAL SYSTEMS
  36. Chapter 30 — ELEVATORS AND CONVEYING SYSTEMS
  37. Chapter 31 — SPECIAL CONSTRUCTION
  38. ▸Chapter 31B — PUBLIC POOLS
    Overview
    1. Section 3101B
    2. Section 3102B
    3. Section 3103B
    4. Section 3104B
    5. Section 3105B
    6. Section 3106B
    7. Section 3107B
    8. Section 3108B
    9. Section 3109B
    10. Section 3110B
    11. Section 3111B
    12. Section 3112B
    13. Section 3113B
    14. Section 3114B
    15. Section 3115B
    16. Section 3116B
    17. Section 3117B
    18. Section 3118B
    19. Section 3119B
    20. Section 3120B
    21. Section 3121B
    22. Section 3122B
    23. Section 3123B
    24. Section 3124B
    25. Section 3125B
    26. Section 3126B
    27. Section 3127B
    28. Section 3128B
    29. Section 3129B
    30. Section 3130B
    31. Section 3131B
    32. Section 3132B
    33. Section 3133B
    34. Section 3134B
    35. Section 3135B
    36. Section 3136B
    37. Section 3137B
    38. Section 3138B
    39. Section 3139B
    40. Section 3140B
    41. Section 3141B
    42. Section 3142B
    43. Section 3143B
    44. Section 3144B
    45. Section 3145B
    46. Section 3146B
    47. Section 3147B
    48. Section 3148B
    49. Section 3149B
    50. Section 3150B
    51. Section 3151B
    52. Section 3152B
    53. Section 3153B
    54. Section 3154B
    55. Section 3155B
    56. Section 3156B
    57. Section 3157B
    58. Section 3158B
    59. Section 3159B
    60. Section 3160B
    61. Section 3161B
    62. Section 3162B
  39. Chapter 31C — RADIATION
  40. Chapter 31D — FOOD ESTABLISHMENTS
  41. Chapter 31F — MARINE OIL TERMINALS
  42. Chapter 32 — ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY
  43. Chapter 33 — SAFEGUARDS DURING CONSTRUCTION
  44. Chapter 35 — REFERENCED STANDARDS
  45. Appendix A — EMPLOYEE QUALIFICATIONS
  46. Appendix B — BOARD OF APPEALS
  47. Appendix C — GROUP U – AGRICULTURAL BUILDINGS
  48. Appendix D — FIRE DISTRICTS
  49. Appendix F — RODENTPROOFING
  50. Appendix H — SIGNS
  51. Appendix I — PATIO COVERS
  52. Appendix J — GRADING
  53. Appendix K — GROUP R-3 AND GROUP R-3.1 OCCUPANCIES
  54. Appendix P — EMERGENCY HOUSING

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