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Chapter 1 — GENERAL CODE PROVISIONS

106.4 Stop Orders. Where work is being done contrary to

California Mechanical Code (Title 24, Part 4) · 2019 edition · updated 2026-09-10 · California

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

the provisions of this code, the Authority Having Jurisdiction shall be permitted to order the work stopped by notice in writing served on persons engaged in the doing or causing such work to be done, and such persons shall forthwith stop work until authorized by the Authority Having Jurisdiction to proceed with the work.

In instances where reinspection fees have been assessed, no additional inspection of the work will be performed until the required fees have been paid.

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Contents — California Mechanical Code (Title 24, Part 4)
California Mechanical Code (Title 24, Part 4)
  1. Chapter 1 — GENERAL CODE PROVISIONS
    Overview
    1. 101.1 Title.101.0 General. This document shall be known as the…
    2. 101.2 Scope. The provisions of this code shall apply to the
    3. 101.3 Purpose. This code is an ordinance providing minimum req…
    4. 101.4 Unconstitutional. Where a section, subsection, sentence,…
    5. 101.5 Validity. Where a provision of this code, or the applica…
    6. 102.1 Conflicts Between Codes.102.0 Applicability. Where the r…
    7. 102.2 Existing Installations. Mechanical systems lawfully in e…
    8. 102.3 Maintenance. Mechanical systems, materials, and
    9. 102.4 Additions, Alterations, Renovations, orRepairs. Addition…
    10. 102.5 Health and Safety. Where compliance with the provisions …
    11. 102.6 Changes in Building Occupancy. Mechanical
    12. 102.7 Moved Structures. Parts of the mechanical system of
    13. 102.8 Appendices. The provisions in the appendices are
    14. 103.0 Duties and Powers of the Authority Having
    15. 103.2 Liability. The Authority Having Jurisdiction charged
    16. 103.3 Applications and Permits. The Authority Having
    17. 104.1 Permits Required. 104.0 Permits. It shall be unlawful fo…
    18. 104.2 Exempt Work. A permit shall not be required for the
    19. 103.4 Right of Entry. Where it is necessary to make an
    20. 104.3 Application for Permit. To obtain a permit, the
    21. 104.4 Permit Issuance. The application, construction documents…
    22. 105.2 Required Inspections. New mechanical system
    23. 104.5 Fees. Fees shall be assessed in accordance with the
    24. 105.4 Connection to Service Utilities. No person shall
    25. 106.2 Notices of Correction or Violation. Notices of
    26. 106.3 Penalties. A person, firm, or corporation violating a
    27. 106.4 Stop Orders. Where work is being done contrary to
    28. 105.3 Testing of Systems. Mechanical systems shall be
    29. 106.6 Authority to Condemn. Where the Authority Having Jurisdi…
    30. 107.0 Board of Appeals.107.1 General. In order to hear and dec…
    31. 107.2 Limitations of Authority. The Board of Appeals
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REGULATIONS
  4. Chapter 4 — VENTILATION AIR
  5. Chapter 5 — EXHAUST SYSTEMS
  6. Chapter 6 — DUCT SYSTEMS
  7. Chapter 7 — COMBUSTION AIR
  8. Chapter 8 — CHIMNEYS AND VENTS
  9. Chapter 9 — INSTALLATION OF SPECIFIC APPLIANCES
  10. Chapter 10 — BOILERS AND PRESSURE VESSELS
  11. Chapter 11 — REFRIGERATION
  12. Chapter 12 — HYDRONICS
  13. Chapter 13 — FUEL GAS PIPING
  14. Chapter 14 — PROCESS PIPING
  15. Chapter 15 — SOLAR ENERGY SYSTEMS
  16. Chapter 16 — STATIONARY POWER PLANTS
  17. Chapter 17 — REFERENCED STANDARDS
  18. Appendix A — RESIDENTIAL PLAN EXAMINER REVIEW FORM FOR HVAC SY…
  19. Appendix B — PROCEDURES TO BE FOLLOWED TO PLACE GAS EQUIPMENT …
  20. Appendix C — INSTALLATION AND TESTING OF OIL (LIQUID) FUEL-FIR…
  21. Appendix D — FUEL SUPPLY: MANUFACTURED/MOBILE HOME PARKS AND R…
  22. Appendix E — SUSTAINABLE PRACTICES
  23. Appendix F — SIZING OF VENTING SYSTEMS AND OUTDOOR COMBUSTION …
  24. Appendix G — EXAMPLE CALCULATION OF OUTDOOR AIR RATE

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