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Chapter 13 — FUEL GAS PIPING

1314.2 Volume. The hourly volume of gas required at each

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.

piping outlet shall be taken as not less than the maximum hourly rating as specified by the manufacturer of the appliance or appliances to be connected to each such outlet.

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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
  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
    Overview
    1. 1301.1 Applicability. 1301.0 Scope of Gas Piping. The regulati…
    2. 1302.1 General. 1302.0 Coverage of Piping System. Coverage of …
    3. 1302.2 Piping System Requirements. Requirements for
    4. 1302.3 Applications. This code shall not apply to the followin…
    5. 1303.2 Excavation. Excavations required for the installation o…
    6. 1303.3 Type of Inspections. The Authority Having Jurisdiction …
    7. 1303.4 Inspection Waived. In cases where the work
    8. 1304.1 Issuance. 1304.0 Certificate of Inspection. Where upon …
    9. 1304.2 Gas Supplier. A copy of the certificate of such final
    10. 1304.3 Unlawful. It shall be unlawful for a serving gas suppli…
    11. 1305.1 Authorized Personnel.1305.0 Authority to Render Gas Ser…
    12. 1305.2 Outlets. It shall be unlawful to turn on or connect gas
    13. 1306.2 Notice. Where such disconnection has been made, a
    14. 1306.3 Capped Outlets. It shall be unlawful to remove or
    15. 1308.1 Installation of Piping System.Components. Where required
    16. 1308.2 Provision for Location of Point of Delivery.
    17. 1308.3 Interconnections Between Gas Piping Sys-
    18. 1308.4 Sizing of Gas Piping Systems. Gas piping systems shall …
    19. 1308.6 Gas Meters. Gas meters shall be selected for the
    20. 1308.7 Gas Pressure Regulators. A line pressure regulator or g…
    21. 1308.9 Pressure Limitation Requirements. Where piping systems …
    22. 1308.10 Backpressure Protection. Protective devices
    23. 1308.10 Backpressure Protection. Protective devices
    24. 1308.8 Overpressure Protection. Where the serving gas
    25. 1308.11 Low-Pressure Protection. A protective device
    26. 1308.12 Shutoff Valves. Shutoff valves shall be approved
    27. 1308.13 Expansion and Flexibility. Piping systems shall
    28. 1309.1 General.1309.0 Excess Flow Valve. Where automatic exces…
    29. 1310.1 Piping Underground. 1310.0 Gas Piping Installation. Und…
    30. 1310.2 Installation of Piping. Piping installed aboveground sh…
    31. 1310.3 Concealed Piping in Buildings. Gas piping in
    32. 1310.4 Piping in Vertical Chases. Where gas piping
    33. 1310.6 Appliance Overpressure Protection. The maximum operatin…
    34. 1310.7 Gas Pipe Turns. Changes in direction of gas pipe
    35. 1310.5 Maximum Design Operating Pressure. The
    36. 1310.8 Drips and Sediment Traps. For other than dry gas
    37. 1310.9 Outlets. Outlets shall be located and installed in
    38. 1310.10 Branch Pipe Connection. When a branch outlet
    39. 1310.11 Manual Gas Shutoff Valves. An accessible gas
    40. 1310.12 Prohibited Devices. No device shall be placed
    41. 1312.1 Connecting Appliances and Equipment.
    42. 1311.4 Lightning Protection System. Where a lightning
    43. 1311.5 Electrical Circuits. Electrical circuits shall not util…
    44. 1311.6 Electrical Connections. All electrical connections
    45. 1311.1 Pipe and Tubing Other than CSST. 1311.0 Electrical Bond…
    46. 1311.2 Bonding of CSST Gas Piping. CSST gas piping
    47. 1311.3 Grounding Conductor of Electrode. Gas piping
    48. 1312.2 Suspended Low-Intensity Infrared Tube
    49. 1312.3 Use of Gas Hose Connectors. Listed gas hose
    50. 1312.7 Quick-Disconnect Devices. Quick-disconnect
    51. 1312.8 Gas Convenience Outlets. Appliances shall be
    52. 1312.4 Injection (Bunsen) Burners. Injection (Bunsen)
    53. 1312.9 Sediment Trap. Where a sediment trap is not incorporate…
    54. 1313.2 Test Preparation. Test preparation shall comply
    55. 1313.3 Test Pressure. This inspection shall include an air,
    56. 1312.10 Installation of Piping. Piping shall be installed in
    57. 1313.1 Piping Installations. 1313.0 Pressure Testing and Inspe…
    58. 1313.4 Detection of Leaks and Defects. The piping system shall…
    59. 1313.5 Piping System Leak Test. Leak checks using fuel
    60. 1313.6 Purging Requirements. The purging of piping
    61. 1314.0 Required Gas Supply. 1314.1 General. The following regu…
    62. 1314.2 Volume. The hourly volume of gas required at each
    63. 1314.3 Gas Appliances. Where the gas appliances to be
    64. 1314.4 Size of Piping Outlets. The size of the supply piping o…
    65. 1315.0 Required Gas Piping Size.1315.1 Pipe Sizing Methods. Wh…
    66. 1315.2 Tables for Sizing Gas Piping Systems. Table
    67. 1315.3 Sizing Equations. The inside diameter of smooth
    68. 1315.4 Sizing of Piping Sections. To determine the size
    69. 1315.5 Engineering Methods. For conditions other than
    70. 1315.6 Variable Gas Pressures. Where the supply gas
  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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