Skip to content

Chapter 11B — ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMMODATIONS, COMMERCIAL BUILDINGS AND PUBLIC HOUSING

Section 11B-405 — RAMPS

2025 California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-07-29 · California

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

11B- 405.1 General. Ramps on accessible routes shall comply with Section 11B- 405 .

Exception: In assembly areas, aisle ramps adjacent to seating and not serving elements required to be on an accessible route shall not be required to comply with Section 11B- 405 .

11B- 405.2 Slope. Ramp runs shall have a running slope not steeper than 1:12.

Exception: Reserved.

11B- 405.3 Cross slope. Cross slope of ramp runs shall not be steeper than 1:48.

11B- 405.4 Floor or ground surfaces. Floor or ground surfaces of ramp runs shall comply with Section 11B- 302. Changes in level other than the running slope and cross slope are not permitted on ramp runs.

11B- 405.5 Clear width. The clear width of a ramp run shall be 48 inches (1219 mm) minimum .

Exceptions:

1. Within employee work areas, the required clear width of ramps that are a part of common use circulation paths shall be permitted to be decreased by work area equipment provided that the decrease is essential to the function of the work being performed. 2. Handrails may project into the required clear width of the ramp at each side 3 [1] / 2 inches (89 mm) maximum at the handrail height.

3. The clear width of ramps in residential uses serving an occupant load of fifty or less shall be 36 inches (914 mm) minimum between handrails.

11B- 405.6 Rise. The rise for any ramp run shall be 30 inches ( 762 mm) maximum.

11B- 405.7 Landings. Ramps shall have landings at the top and the bottom of each ramp run. Landings shall comply with Section 11B- 405.7.

11B- 405.7.1 Slope. Landings shall comply with Section 11B- 302. Changes in level, slopes exceeding 1:48, and detectable warnings shall not be permitted.

Exception: Reserved.

11B- 405.7.2 Width. The landing clear width shall be at least as wide as the widest ramp run leading to the landing.

11B-405.7.2.1: Top landings shall be 60 inches (1524 mm) wide minimum.

11B- 405.7.3 Length. The landing clear length shall be 60 inches (1524 mm) long minimum.

11B-405.7.3.1: Bottom landings shall extend 72 inches (1829 mm) minimum in the direction of ramp run.

11B- 405.7.4 Change in direction. Ramps that change direction between runs at landings shall have a clear landing 60 inches (1525 mm) minimum by 72 inches (1829 mm) minimum in the direction of downward travel from the upper ramp run.

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMMODATIONS, COMMERCIAL BUILDINGS AND PUBLIC HOUSING

11B- 405.7.5 Doorways. Where doorways are located adjacent to a ramp landing, maneuvering clearances required by Sections 11B- 404.2.4 and 11B- 404.3.2 shall be permitted to overlap the required landing area. Doors, when fully open, shall not reduce the required ramp landing width by more than 3 inches (76 mm). Doors, in any position, shall not reduce the minimum dimension of the ramp landing to less than 42 inches (1067 mm).

located adjacent to a ramp landing, maneuvering clearances required by Sections 11B- 404.2.4 and 11B- 404.3.2 shall be permitted to overlap the required landing area. Doors, when fully open, shall not reduce the required ramp landing width by more than 3 inches (76 mm). Doors, in any position, shall not reduce the minimum dimension of the ramp landing to less than 42 inches (1067 mm).

11B- 405.8 Handrails. Ramp runs shall have handrails complying with Section 11B- 505 .

Exceptions:

1. Reserved.

2. Reserved.

3. Curb ramps do not require handrails. 4. At door landings, handrails are not required on ramp runs less than 6 inches (152 mm) in rise or 72 inches (1829 mm) in length.

11B- 405.9 Edge protection. Edge protection complying with Section 11B- 405.9.2 shall be provided on each side of ramp runs and at each side of ramp landings.

Exceptions:

  1. Edge protection shall not be required on ramps that are not required to have handrails and have sides complying with Section 11B- 406.2.2.

  2. Edge protection shall not be required on the sides of ramp landings serving an adjoining ramp run or stairway.

  3. Edge protection shall not be required on the sides of ramp landings having a vertical drop-off of [1] / 2 inch ( 12.7 mm) maximum within 10 inches ( 254 mm) horizontally of the minimum landing area specified in Section 11B- 405.7.

11B- 405.9.1 Reserved.

11B- 405.9.2 Curb or barrier. A curb or barrier shall be provided that prevents the passage of a 4-inch ( 102 mm) diameter sphere, where any portion of the sphere is within 4 inches ( 102 mm) of the finish floor or ground surface. To prevent wheel entrapment, the curb or barrier shall provide a continuous and uninterrupted barrier along the length of the ramp.

FIGURE 11B -405.9.2—CURB OR BARRIER EDGE PROTECTION

11B- 405.10 Wet conditions. Landings subject to wet conditions shall be designed to prevent the accumulation of water.

Get a plain-English answer with a citation back to this text.

Ask AI about this code
▸ Contents — 2025 California Building Code (Title 24, Part 2)
2025 California Building Code (Title 24, Part 2)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — OCCUPANCY CLASSIFICATION AND USE
  4. Chapter 4 — SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY A…
  5. Chapter 5 — GENERAL BUILDING HEIGHTS AND AREAS
  6. Chapter 6 — TYPES OF CONSTRUCTION
  7. Chapter 7 — FIRE AND SMOKE PROTECTION FEATURES
  8. Chapter 7A — MATERIALS AND CONSTRUCTION METHODS FOR EXTERIOR W…
  9. Chapter 8 — INTERIOR FINISHES
  10. Chapter 9 — FIRE PROTECTION AND LIFE SAFETY SYSTEMS
  11. Chapter 10 — MEANS OF EGRESS
  12. Chapter 11 — RESERVED
  13. Chapter 11A — HOUSING ACCESSIBILITY
  14. ▸ Chapter 11B — ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMM…
    Overview
    1. Section 11B-101 — PURPOSE
    2. Section 11B-104 — CONVENTIONS
    3. Section 11B-105 — REFERENCED STANDARDS
    4. Section 11B-106 — DEFINITIONS
    5. Section 11B-201 — APPLICATION
    6. Section 11B-202 — EXISTING BUILDINGS AND FACILITIES
    7. Section 11B-203 — GENERAL EXCEPTIONS
    8. Section 11B-204 — PROTRUDING OBJECTS
    9. Section 11B-205 — OPERABLE PARTS
    10. Section 11B-206 — ACCESSIBLE ROUTES
    11. Section 11B-207 — ACCESSIBLE MEANS OF EGRESS
    12. Section 11B-208 — PARKING SPACES
    13. Section 11B-209 — PASSENGER DROP-OFF AND LOADING ZONES AND BUS…
    14. Section 11B-210 — STAIRWAYS
    15. Section 11B-211 — DRINKING FOUNTAINS AND BOTTLE-FILLING STATIONS
    16. Section 11B-212 — KITCHENS, KITCHENETTES, WET BARS AND SINKS
    17. Section 11B-213 — TOILET FACILITIES AND BATHING FACILITIES
    18. Section 11B-214 — WASHING MACHINES AND CLOTHES DRYERS
    19. Section 11B-215 — FIRE ALARM SYSTEMS AND CARBON MONOXIDE ALARM…
    20. Section 11B-216 — SIGNS
    21. Section 11B-217 — TELEPHONES
    22. Section 11B-218 — TRANSPORTATION FACILITIES
    23. Section 11B-219 — ASSISTIVE LISTENING SYSTEMS
    24. Section 11B-220 — AUTOMATIC TELLER MACHINES, FARE MACHINES AND…
    25. Section 11B-221 — ASSEMBLY AREAS
    26. Section 11B-222 — DRESSING, FITTING AND LOCKER ROOMS
    27. Section 11B-223 — MEDICAL CARE AND LONG-TERM CARE FACILITIES
    28. Section 11B-224 — TRANSIENT LODGING GUEST ROOMS, HOUSING
    29. Section 11B-225 — STORAGE
    30. Section 11B-226 — DINING SURFACES AND WORK SURFACES
    31. Section 11B-227 — SALES AND SERVICE
    32. Section 11B-228 — DEPOSITORIES, VENDING MACHINES, CHANGE MACHI…
    33. Section 11B-229 — WINDOWS
    34. Section 11B-230 — TWO-WAY COMMUNICATION SYSTEMS
    35. Section 11B-231 — JUDICIAL FACILITIES
    36. Section 11B-232 — DETENTION FACILITIES AND CORRECTIONAL FACILI…
    37. Section 11B-233 — PUBLIC HOUSING FACILITIES
    38. Section 11B-234 — AMUSEMENT RIDES
    39. Section 11B-235 — RECREATIONAL BOATING FACILITIES
    40. Section 11B-236 — EXERCISE MACHINES AND EQUIPMENT
    41. Section 11B-237 — FISHING PIERS AND PLATFORMS
    42. Section 11B-238 — GOLF FACILITIES
    43. Section 11B-239 — MINIATURE GOLF FACILITIES
    44. Section 11B-240 — PLAY AREAS
    45. Section 11B-241 — SAUNAS AND STEAM ROOMS
    46. Section 11B-242 — SWIMMING POOLS, WADING POOLS AND SPAS
    47. Section 11B-243 — SHOOTING FACILITIES WITH FIRING POSITIONS
    48. Section 11B-244 — RELIGIOUS FACILITIES
    49. Section 11B-245 — PUBLIC ACCOMMODATIONS LOCATED IN PRIVATE RES…
    50. Section 11B-246 — OUTDOOR DEVELOPED AREAS
    51. Section 11B-247 — DETECTABLE WARNINGS AND DETECTABLE DIRECTION…
    52. Section 11B-248 — COMMON USE AREAS AND EMPLOYEE WORK AREAS
    53. Section 11B-249 — ADULT CHANGING FACILITIES
    54. Section 11B-250 — CIRCULATION PATHS
    55. Section 11B-301 — GENERAL
    56. Section 11B-302 — FLOOR OR GROUND SURFACES
    57. Section 11B-303 — CHANGES IN LEVEL
    58. Section 11B-304 — TURNING SPACE
    59. Section 11B-305 — CLEAR FLOOR OR GROUND SPACE
    60. Section 11B-306 — KNEE AND TOE CLEARANCE
    61. Section 11B-307 — PROTRUDING OBJECTS
    62. Section 11B-308 — REACH RANGES
    63. Section 11B-309 — OPERABLE PARTS
    64. Section 11B-401 — GENERAL
    65. Section 11B-402 — ACCESSIBLE ROUTES
    66. Section 11B-403 — W ALKING SURFACES
    67. Section 11B-404 — DOORS, DOORWAYS AND GATES
    68. Section 11B-405 — RAMPS
    69. Section 11B-406 — CURB RAMPS, BLENDED TRANSITIONS AND ISLANDS
    70. Section 11B-407 — ELEVATORS
    71. Section 11B-408 — LIMITED-USE/LIMITED-APPLICATION ELEVATORS
    72. Section 11B-409 — PRIVATE RESIDENCE ELEVATORS
    73. Section 11B-410 — PLATFORM LIFTS
    74. Section 11B-411 — DESTINATION-ORIENTED ELEVATORS
    75. Section 11B-501 — GENERAL
    76. Section 11B-502 — PARKING SPACES
    77. Section 11B-503 — PASSENGER DROP-OFF AND LOADING ZONES
    78. Section 11B-504 — STAIRWAYS
    79. Section 11B-505 — HANDRAILS
    80. Section 11B-601 — GENERAL
    81. Section 11B-602 — DRINKING FOUNTAINS AND BOTTLE-FILLING STATIONS
    82. Section 11B-603 — TOILET AND BATHING ROOMS
    83. Section 11B-604 — WATER CLOSETS AND TOILET COMPARTMENTS
    84. Section 11B-605 — URINALS
    85. Section 11B-606 — LAVATORIES AND SINKS
    86. Section 11B-607 — BATHTUBS
    87. Section 11B-608 — SHOWER COMPARTMENTS
    88. Section 11B-609 — GRAB BARS
    89. Section 11B-610 — SEATS
    90. Section 11B-611 — WASHING MACHINES AND CLOTHES DRYERS
    91. Section 11B-612 — SAUNAS AND STEAM ROOMS
    92. Section 11B-701 — GENERAL
    93. Section 11B-702 — FIRE ALARM SYSTEMS
    94. Section 11B-703 — SIGNS
    95. Section 11B-704 — TELEPHONES
    96. Section 11B-705 — DETECTABLE WARNINGS AND DETECTABLE DIRECTION…
    97. Section 11B-706 — ASSISTIVE LISTENING SYSTEMS
    98. Section 11B-707 — AUTOMATIC TELLER MACHINES, FARE MACHINES AND…
    99. Section 11B-708 — TWO-WAY COMMUNICATION SYSTEMS
    100. Section 11B-801 — GENERAL
    101. Section 11B-802 — WHEELCHAIR SPACES, COMPANION SEATS AND DESIG…
    102. Section 11B-803 — DRESSING, FITTING AND LOCKER ROOMS
    103. Section 11B-804 — KITCHENS, KITCHENETTES AND WET BARS
    104. Section 11B-805 — MEDICAL CARE AND LONG-TERM CARE FACILITIES
    105. Section 11B-806 — TRANSIENT LODGING GUEST ROOMS
    106. Section 11B-807 — HOLDING CELLS AND HOUSING CELLS
    107. Section 11B-808 — COURTROOMS
    108. Section 11B-809 — RESIDENTIAL DWELLING UNITS
    109. Section 11B-810 — TRANSPORTATION FACILITIES
    110. Section 11B-811 — STORAGE
    111. Section 11B-812 — ELECTRIC VEHICLE CHARGING STATIONS
    112. Section 11B-813 — ADULT CHANGING FACILITIES
    113. Section 11B-901 — GENERAL
    114. Section 11B-902 — DINING SURFACES AND WORK SURFACES
    115. Section 11B-903 — BENCHES
    116. Section 11B-904 — CHECK-OUT AISLES AND SALES AND SERVICE COUNT…
    117. Section 11B-1001 — GENERAL
    118. Section 11B-1002 — AMUSEMENT RIDES
    119. Section 11B-1003 — RECREATIONAL BOATING FACILITIES
    120. Section 11B-1004 — EXERCISE MACHINES AND EQUIPMENT
    121. Section 11B-1005 — FISHING PIERS AND PLATFORMS
    122. Section 11B-1006 — GOLF FACILITIES
    123. Section 11B-1007 — MINIATURE GOLF FACILITIES
    124. Section 11B-1008 — PLAY AREAS
    125. Section 11B-1009 — SWIMMING POOLS, WADING POOLS AND SPAS
    126. Section 11B-1010 — SHOOTING FACILITIES WITH FIRING POSITIONS
  15. Chapter 12 — INTERIOR ENVIRONMENT
  16. Chapter 13 — ENERGY EFFICIENCY
  17. Chapter 14 — EXTERIOR WALLS
  18. Chapter 15 — ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
  19. Chapter 16 — STRUCTURAL DESIGN
  20. Chapter 16A — STRUCTURAL DESIGN
  21. Chapter 17 — SPECIAL INSPECTIONS AND TESTS
  22. Chapter 17A — SPECIAL INSPECTIONS AND TESTS
  23. Chapter 18 — SOILS AND FOUNDATIONS
  24. Chapter 18A — SOILS AND FOUNDATIONS
  25. Chapter 19 — CONCRETE
  26. Chapter 19A — CONCRETE
  27. Chapter 20 — ALUMINUM
  28. Chapter 21 — MASONRY
  29. Chapter 21A — MASONRY
  30. Chapter 22 — STEEL
  31. Chapter 22A — STEEL
  32. Chapter 23 — WOOD
  33. Chapter 24 — GLASS AND GLAZING
  34. Chapter 25 — GYPSUM PANEL PRODUCTS AND PLASTER
  35. Chapter 26 — PLASTIC
  36. Chapter 27 — ELECTRICAL
  37. Chapter 28 — MECHANICAL SYSTEMS
  38. Chapter 29 — PLUMBING SYSTEMS
  39. Chapter 30 — ELEVATORS AND CONVEYING SYSTEMS
  40. Chapter 31 — SPECIAL CONSTRUCTION
  41. Chapter 31A — SYSTEMS FOR WINDOW CLEANING OR EXTERIOR BUILDING…
  42. Chapter 31B — PUBLIC POOLS
  43. Chapter 31C — RADIATION
  44. Chapter 31D — FOOD ESTABLISHMENTS
  45. Chapter 31F — MARINE OIL TERMINALS
  46. Chapter 32 — ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY
  47. Chapter 33 — SAFEGUARDS DURING CONSTRUCTION
  48. Chapter 34 — RESERVED
  49. Chapter 35 — REFERENCED STANDARDS
  50. Appendix A — EMPLOYEE QUALIFICATIONS
  51. Appendix B — BOARD OF APPEALS
  52. Appendix C — GROUP U—AGRICULTURAL BUILDINGS
  53. Appendix D — FIRE DISTRICTS
  54. Appendix E — RESERVED
  55. Appendix F — RODENTPROOFING
  56. Appendix G — FLOOD-RESISTANT CONSTRUCTION
  57. Appendix H — SIGNS
  58. Appendix I — PATIO COVERS
  59. Appendix J — GRADING
  60. Appendix K — GROUP R-3 AND GROUP R-3.1 OCCUPANCIES PROTECTED B…
  61. Appendix L — EARTHQUAKE RECORDING INSTRUMENTATION
  62. Appendix M — TSUNAMI-GENERATED FLOOD HAZARDS
  63. Appendix N — REPLICABLE BUILDINGS
  64. Appendix O — PERFORMANCE-BASED APPLICATION
  65. Appendix P — SLEEPING LOFTS
  66. Appendix Q — EMERGENCY HOUSING

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.