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Chapter 19 — CONCRETE

Section 1901A

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.

GENERAL

1901 A .1 Scope. The provisions of this chapter shall govern the materials, quality control, design and construction of concrete used in structures.

1901A.1.1 Application. The scope of application of Chap- ter 19A is as follows:

1. Structures regulated by the Division of the State

Architect-Structural Safety (DSA-SS), which include those applications listed in Section 1.9.2.1. These applications include public elemen- tary and secondary schools, community colleges and state-owned or state-leased essential services buildings.

2. Applications listed in Sections 1.10.1 and 1.10.4, regulated by the Office of Statewide Health Plan- ning and Development (OSHPD). These applica- tions include hospitals and correctional treatment centers.

1901A.1.2 Amendments in this chapter. DSA-SS and OSHPD adopt this chapter and all amendments.

Exception: Amendments adopted by only one agency appear in this chapter preceded with the appropriate acronym of the adopting agency, as follows:

1. Division of the State Architect-Structural Safety:

[DSA-SS] For applications listed in Section 1.9.2.1.

2. Office of Statewide Health Planning and Devel- opment.

[OSHPD 1] – For applications listed in Section 1.10.1.

[OSHPD 4] – For applications listed in Section 1.10.4.

1901 A .2 R einforced concrete. Structural concrete shall be designed and constructed in accordance with the requirements of this chapter and ACI 318 as amended in Section 1905 A of this code, except that plain concrete is not permit- ted. Except for the provisions of Sections 1904 A and 1907 A, the design and construction of slabs on grade shall not be governed by this chapter unless they transmit vertical loads or lateral forces from other parts of the structure to the soil.

1901 A .3 Anchoring to concrete. Anchoring to concrete shall be in accordance with ACI 318 as amended in Section 1905 A,

and applies to cast-in (headed bolts, headed studs and hooked J- or L-bolts), post-installed expansion (torque-controlled and displacement-controlled), undercut, screw, and adhesive anchors.

1901 A .4 Composite structural steel and concrete struc- tures. Systems of structural steel acting compositely with reinforced concrete shall be designed in accordance with Section 2206 A of this code.

1901 A .5 Construction documents. The construction documents for structural concrete construction shall include:

  1. The specified compressive strength of concrete at the stated ages or stages of construction for which each concrete element is designed.
  2. The specified strength or grade of reinforcement.
  3. The size and location of structural elements, reinforcement and anchors.
  4. Provision for dimensional changes resulting from creep, shrinkage and temperature.
  5. The magnitude and location of prestressing forces.
  6. Anchorage length of reinforcement and location and length of lap splices.
  7. Type and location of mechanical and welded splices of reinforcement.
  8. Details and location of contraction or isolation joints specified for plain concrete.
  9. Minimum concrete compressive strength at time of posttensioning.
  10. Stressing sequence for posttensioning tendons.
  11. For structures assigned to Seismic Design Category D, E or F, a statement if slab on grade is designed as a structural diaphragm.

12. Openings larger than 12 inches (305 mm) in any dimension shall be detailed on the structural draw- ings.

1901 A .6 Special inspections and tests. Special inspections and tests of concrete elements of buildings and structures and concreting operations shall be as required by Chapter 17A and Section 1910A.

1901 A .7 Tolerances for structural concrete. Where not indicated in construction documents, structural tolerances for concrete structural elements shall be in accordance with this section.

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.

CONCRETE

1901 A .7.1 Cast-in-place concrete tolerances. Structural tolerances for cast-in-place concrete structural elements shall be in accordance with ACI 117.

Exceptions:

  1. Group R-3 detached one- or two-family dwellings are not required to comply with this section.

  2. Shotcrete is not required to comply with this section. [DSA-SS] Tolerances for shotcrete con- struction shall be defined by the construction documents.

1901 A .7.2 Precast concrete tolerances. Structural tolerances for precast concrete structural elements shall be in accordance with ACI ITG-7.

Exception: Group R-3 detached one- or two-family dwellings are not required to comply with this section.

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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
    Overview
    1. Section 1901
    2. Section 1902
    3. Section 1903
    4. Section 1904
    5. Section 1905
    6. Section 1908
    7. Section 1909
    8. Section 1906
    9. Section 1907
    10. Section 1910
    11. Section 1911
    12. Section 1901A
    13. Section 1902A
    14. Section 1903A
    15. Section 1904A
    16. Section 1905A
    17. Section 1908A
    18. Section 1909A
    19. Section 1910A
    20. Section 1906A
    21. Section 1907A
    22. Section 1911A
  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
  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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