CRSC · California Referenced Standards Code

California standard for earthquake‑actuated automatic gas shutoff systems

If your building or your local ordinance requires an earthquake‑actuated gas shutoff valve, the device must be certified to ASCE 25‑16 for Division of the State Architect approval (see § 12‑16‑101), and any customer‑owned certified device must be installed in accordance with the California Plumbing Code (see § 12‑16‑101.1 and Plumbing Code § 1211.8) .

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Last reviewed: July 6, 2026

What the code requires — plain English (controlling §)

The Division of the State Architect requires that devices used as earthquake‑actuated automatic gas shutoff systems be certified to the ASCE technical standard ASCE 25‑16 (ANSI/ASCE/SEI 25‑16) for “Earthquake‑Actuated Automatic Gas Shutoff Devices.” This certification requirement is set out in § 12‑16‑101 of the California Referenced Standards Code (CRSC) .
Each installation of a customer‑owned device that meets that certification must be installed in accordance with the California Plumbing Code (CCR Title 24, Part 5) as required by § 12‑16‑101.1 .

The single most important rule: devices must be certified to ASCE 25‑16 for DSA certification, and installations of certified customer‑owned devices must follow the California Plumbing Code (see § 12‑16‑101 and § 12‑16‑101.1) .

Requirements in detail

What standard is required for certification

  • Certification standard: ASCE 25‑16 (Earthquake‑Actuated Automatic Gas Shutoff Devices) — this is the standard the Division of the State Architect uses to evaluate and certify devices per § 12‑16‑101.

How installations are governed

  • Installation rule: every installation of a customer‑owned device that satisfies the DSA standard must be installed in accordance with the California Plumbing Code (CCR Title 24, Part 5) per § 12‑16‑101.1.
  • Note: The California Plumbing Code also cross‑references the CRSC certification requirement and addresses when such valves are required by local ordinance (see Plumbing Code § 1211.8) .

Decision‑relevant dimensions (table)

Decision dimension What the code says Code reference
Certification standard to use Devices are certified to ASCE 25‑16 § 12‑16‑101
Who certifies Division of the State Architect uses ASCE 25‑16 for certification § 12‑16‑101
Installation authority Installations of customer‑owned certified devices must follow California Plumbing Code § 12‑16‑101.1
Local ordinance effect Plumbing Code requires valves when local ordinance demands; uncertified devices are prohibited in certain public buildings where ordinance makes installation mandatory California Plumbing Code § 1211.8

Scope and limits

  • The CRSC text establishes the certification standard and links installation to the Plumbing Code; it does not itself prescribe the device technical test methods beyond adoption of ASCE 25‑16 (for the detailed performance, testing, labeling and marking requirements consult ASCE 25‑16) — the CRSC text is a referencing/administrative standard for DSA certification § 12‑16‑101 .
  • For installation siting, piping connections, bonding, electrical connections and when valves are required, consult the California Plumbing Code (for example § 1211.8 and adjacent sections) .

Exceptions & special cases

  • Local ordinance: Whether a building must have an earthquake‑actuated shutoff valve is determined by local ordinance; where a local ordinance requires such valves the Plumbing Code (§ 1211.8) governs their provision and use. Devices that have not been certified by the State Architect are prohibited in buildings open to the public when local ordinance mandates installation .
  • Customer‑owned devices: If an owner installs their own certified device, the owner‑installation must still comply with the California Plumbing Code per § 12‑16‑101.1 .
  • If a local jurisdiction requires a valve but no device is yet DSA‑certified for a particular application, compliance actions are controlled by local ordinance and the Plumbing Code — the CRSC text itself does not create a temporary exemption mechanism; follow the local authority having jurisdiction (AHJ) direction and Plumbing Code guidance .

Common mistakes

  • Assuming any “seismic” or “tilt” valve is acceptable. The CRSC requires certification to ASCE 25‑16 for DSA certification — unlisted/uncertified devices are not acceptable where certification is required (see § 12‑16‑101).
  • Installing a certified device but ignoring the Plumbing Code requirements. Even certified devices must be installed in accordance with the California Plumbing Code per § 12‑16‑101.1.
  • Using a non‑DSA‑certified device in a public building that falls under a mandatory local ordinance — the Plumbing Code explicitly prohibits uncertified valves in that situation (see Plumbing Code § 1211.8) .
  • Failing to check the AHJ/local ordinance: the requirement to provide a valve may be local; confirm ordinance triggers and any local installation specifics before procuring or installing equipment (Plumbing Code § 1211.8) .

Worked example — concrete scenario

Scenario: A school district building is in a city that has a local ordinance requiring earthquake‑actuated gas shutoff valves on its gas services. The facilities manager is evaluating a customer‑owned device for a 2‑inch gas service.

Step 1 — Verify certification: the manager confirms the device is tested and certified to ASCE 25‑16 and listed by the Division of the State Architect. This satisfies the CRSC certification requirement in § 12‑16‑101 .

Step 2 — Confirm local ordinance: since the city ordinance mandates installation, the AHJ requires only DSA‑certified devices be used in buildings open to the public (Plumbing Code § 1211.8) .

Step 3 — Install per code: the district arranges installation by a licensed plumber in strict accordance with the California Plumbing Code installation rules, manufacturer instructions, and local AHJ procedures as required by § 12‑16‑101.1 .

Result: Device selection, DSA certification, and plumbing‑code‑compliant installation satisfy the CRSC and Plumbing Code requirements; an uncertified alternative would be disallowed for the school under the local ordinance (Plumbing Code § 1211.8) .

Related provisions (CRSC sections)

  • § 12‑16‑101 — Certification standard: ASCE 25‑16 required for DSA certification of earthquake‑actuated gas shutoff devices.
  • § 12‑16‑101.1 — Installation of customer‑owned devices must follow the California Plumbing Code.
  • § 12‑16‑201 — California standard for residential excess‑flow actuated automatic gas shutoff valves (Standard 12‑16‑2) — related device family and certification references.
  • § 12‑16‑201.1 — Installation note for residential excess‑flow devices (ties to the California Plumbing Code).

(For installation specifics, timeline, test procedures and labeling you must consult ASCE 25‑16 itself and the California Plumbing Code; the CRSC text references ASCE 25‑16 as the certification standard but does not reproduce detailed test criteria in the CRSC excerpts above.)

Code references

Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:

  • CRSC § 12-16 High relevance — show source text

    12-16-1 ENGINEERING REGULATIONS—QUALITY AND

    DESIGN OF THE MATERIALS OF CONSTRUCTION

    CALIFORNIA STANDARD FOR EARTHQUAKE-ACTUATED AUTOMATIC GAS SHUTOFF SYSTEMS (SEE CCR TITLE 24, PART 2, CHAPTERS 16 AND 16A, AND CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-1

    DIVISION OF THE STATE ARCHITECT

    Authority: Sections 19180–19183, Health and Safety Code. Reference: Section 19182, Health and Safety Code.

    DIVISION 1—CONSTRUCTION

    SCOPE

    Sec. 12-16-101. The American Society of Civil Engineers (ASCE) requirements for “Earthquake-Actuated Automatic Gas Shutoff Devices,” ANSI/ASCE/SEI 25-16 (copyright 2016 by ASCE), shall be the applicable standard used by the Division of the State Architect for the certification of these devices.

    Sec. 12-16-101.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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    12-16-2 ENGINEERING REGULATIONS—QUALITY AND

    DESIGN OF THE MATERIALS OF CONSTRUCTION

    CALIFORNIA STANDARD FOR RESIDENTIAL EXCESS FLOW ACTUATED AUTOMATIC GAS SHUTOFF VALVES (SEE CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-2

    DIVISION OF THE STATE ARCHITECT

    Authority: Sections 19200–19204, Health and Safety Code. Reference: Sections 19201.5 and 19202, Health and Safety Code.

    DIVISION 1—CONSTRUCTION

    SCOPE

    Sec. 12-16-201. The American Society for Testing and Materials (ASTM) F2138-12(2017) Standard Specification for Excess Flow Valves for Natural Gas Service, and the American National Standards Institute (ANSI) Z21.93-2017/CSA 6.30-2017 Excess Flow Valves for Natural and LP Gas with Pressure up to 5 psig, shall be the applicable standards used by the Division of the State Architect for certification of these devices.

    Sec. 12-16-201.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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    12-31C RADIATION SHIELDING STANDARDS

    STANDARD 12-31C-1

    DEPARTMENT OF HEALTH SERVICES

  • CRSC § 7.14.1 High relevance — show source text

    [NFPA 54:7.14.1] 1211.7.1 Safety Control. Any essential safety control depending on electric current as the operating medium shall be of a type that shuts off (fail safe) the flow of gas in the event of current failure. [NFPA 54:7.14.2] 1211.8 Earthquake-Actuated Gas Shutoff Valves. Earthquake-actuated gas shutoff valves designed to auto- matically shut off the gas at the location of the valve in the event of a seismic disturbance and certified by the State Architect as conforming to California Code of Regulations, Title 24, Part 12, Chapter 12-16-1, shall be provided for buildings when such installation is required by local ordi- nance. Earthquake-actuated gas shutoff valves which have not been certified by the State Architect shall be prohibited in buildings open to the public under mandatory installation by local ordinance. Installation of the valves shall be in accordance with local ordinance, and in the absence of such per the manufacturer’s installation instructions.

    1212.0 Appliance and Equipment Connections to Building Piping. 1212.1 Connecting Appliances and Equipment. Appliances and equipment shall be connected to the building piping in compliance with Section 1212.6 through Section 1212.8 by one of the following: (1) Rigid metallic pipe and fittings. (2) Semirigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations. (3) A connector for gas appliances listed in accordance with ANSI Z21.24/CSA 6.10. The connector shall be used in

    accordance with the manufacturer’s installation instructions and shall be in the same room as the appliance. Only one connector shall be used per appliance. (4) A connector for outdoor gas appliances and manufactured homes listed in accordance with ANSI Z21.75/CSA 6.27. Only one connector shall be used per appliance. (5) CSST where installed in accordance with the manufacturer’s installation instructions. CSST shall not be directly routed into a metallic appliance enclosure where the appliance is connected to a metallic vent that terminates above a roofline. CSST shall connect only to appliances that are fixed in place. (6) Listed nonmetallic gas hose connectors in accordance with Section 1212.3.

    (7) Unlisted gas hose connectors for use in laboratories and educational facilities in accordance with Section 1212.4.

    [NFPA 54:9.6.1]

    1212.1.1 Protection of Connectors. Connectors and tubing addressed in Section 1212.1(2), Section 1212.1(3), Section 1212.1(4), Section 1212.1(5), and Section 1212.1(6) shall be installed to be protected against physical and thermal damage. Aluminum alloy tubing and connectors shall be coated to protect against external corrosion where they are in contact with masonry, plaster, or insulation or are subject to repeated wettings by such liquids as detergents, sewage, or water other than rainwater. [NFPA 54:9.6.1.1]

    2025 CALIFORNIA PLUMBING CODE 229

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    FUEL GAS PIPING

  • CRSC § 64703-64705. High relevance — show source text

    This installed weight per square foot shall conform with the manufacturer’s installed design density per square foot at the manufacturer’s labeled R -value.

    (b) Water heater insulation kits. No water heater insulation kit shall be sold, on or after March 25, 1982, unless it has a thermal resistance of at least R-6 and is so identified.

    Each water heater insulation kit sold shall include instructions which are equivalent to the Department of Energy standard practice for the installation of insulation on gas-fired, oil-fired and electric resistance water heaters, 44 Fed. Reg. pages 64703-64705.

    Authority: Section 25922, Public Resources Code.

    Reference: Section 25922, Public Resources Code.

    HISTORY:

    1. Amendment filed 8-10-81; designated effective 9-22-81 (Register 81, No. 33).
    2. Editorial correction of subsection (a) filed 1-13-82 (Register 82, No. 2).

    INTERPRETATION

    Sec. 12-13-1565.

    The General Counsel of the Commission shall make a determination as to the application or interpretation of any provision of this article to any person requesting such a determination. Any such request shall be submitted in writing to the Commission. The Commission shall make written replies to such inquiries and shall widely publish interpretations that have broad application or interest.

    Authority: Section 25218 (e), Public Resources Code.

    Reference: Sections 25920 and 25922, Public Resources Code.

    HISTORY:

    1. Amendment filed 8-10-81; designated effective 9-22-81 (Register 81, No. 33).

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    12-16-1 ENGINEERING REGULATIONS—QUALITY AND

    DESIGN OF THE MATERIALS OF CONSTRUCTION

    CALIFORNIA STANDARD FOR EARTHQUAKE-ACTUATED AUTOMATIC GAS SHUTOFF SYSTEMS (SEE CCR TITLE 24, PART 2, CHAPTERS 16 AND 16A, AND CCR TITLE 24, PART 5, CHAPTER 12) STANDARD 12-16-1

    DIVISION OF THE STATE ARCHITECT

    Authority: Sections 19180–19183, Health and Safety Code. Reference: Section 19182, Health and Safety Code.

    DIVISION 1—CONSTRUCTION

    SCOPE

    Sec. 12-16-101. The American Society of Civil Engineers (ASCE) requirements for “Earthquake-Actuated Automatic Gas Shutoff Devices,” ANSI/ASCE/SEI 25-16 (copyright 2016 by ASCE), shall be the applicable standard used by the Division of the State Architect for the certification of these devices.

    Sec. 12-16-101.1. Each installation of a customer-owned device that satisfies this standard shall be in accordance with the California Plumbing Code (CCR Title 24, Part 5).

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    12-16-2 ENGINEERING REGULATIONS—QUALITY AND

  • CRSC § 1211.2 High relevance — show source text

    Where any CSST component of a piping system does not have an arcresistant jacket or coating system, the bonding requirements of Section 1211.2 shall apply. Arc-resistant jacketed CSST shall be considered to be bonded when it is connected to appliances that are connected to the appliance grounding conductor of the circuit supplying that appliance. [NFPA 54:7.12.3] 1211.4 Prohibited Use. Gas piping shall not be used as a grounding conductor or electrode. [NFPA 54:7.12.4.1] 1211.5 Lightning Protection System. Where a lightning protection system is installed, the bonding of the gas piping shall be in accordance with NFPA 780. [NFPA 54:7.12.5]

    1211.6 Electrical Circuits. Electrical circuits shall not utilize gas piping or components as conductors. Exception: Low-voltage (50 V or less) control circuits, ignition circuits, and electronic flame detection device circuits shall be permitted to make use of piping or components as a part of an electric circuit. [NFPA 54:7.13] 1211.7 Electrical Connections. All electrical connections between wiring and electrically operated control devices in a

    piping system shall conform to the requirements of Califor- nia Electrical Code . [NFPA 54:7.14.1] 1211.7.1 Safety Control. Any essential safety control depending on electric current as the operating medium shall be of a type that shuts off (fail safe) the flow of gas in the event of current failure. [NFPA 54:7.14.2] 1211.8 Earthquake-Actuated Gas Shutoff Valves. Earthquake-actuated gas shutoff valves designed to auto- matically shut off the gas at the location of the valve in the event of a seismic disturbance and certified by the State Architect as conforming to California Code of Regulations, Title 24, Part 12, Chapter 12-16-1, shall be provided for buildings when such installation is required by local ordi- nance. Earthquake-actuated gas shutoff valves which have not been certified by the State Architect shall be prohibited in buildings open to the public under mandatory installation by local ordinance. Installation of the valves shall be in accordance with local ordinance, and in the absence of such per the manufacturer’s installation instructions.

    1212.0 Appliance and Equipment Connections to Building Piping. 1212.1 Connecting Appliances and Equipment. Appliances and equipment shall be connected to the building piping in compliance with Section 1212.6 through Section 1212.8 by one of the following: (1) Rigid metallic pipe and fittings. (2) Semirigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations. (3) A connector for gas appliances listed in accordance with ANSI Z21.24/CSA 6.10. The connector shall be used in

  • CRSC § 12-7 High relevance — show source text

    Fire tests of building
    construction and materials.|SFM|Part 2, Section 703| |Chapter 12-7-2|Reserved||| |Chapter 12-7-3|Fire-resistive standards.
    Fire testing furnaces.|SFM|Part 9, Section 3001| |Chapter 12-7-4|Fire-resistive standards.
    Fire door assembly tests.|SFM|Part 2, Section 716| |Chapter 12-7-5|Fire-resistive standards. Interior
    finish of decorative material.|SFM|Part 2, Chapter 8
    Part 9, Chapter 8| |Chapter 12-7A|Materials and construction methods for
    exterior wildfire exposure|SFM|Part 7, Chapter 5| |Chapter 12-8-1|Fire-resistive standards for fire protection|SFM|Part 2, Sections 408.14 and 435.6.2| |Appendix 12-8-1A|Calculation of the total rate of heat and carbon
    monoxide or carbon dioxide production|SFM|| |Appendix 12-8-1B|Guide to mounting techniques for wall and
    ceiling interior finish material|SFM|| |Chapter 12-10-1|Exits. Power-operated exit doors.|SFM|Part 2, Sections 408.4.2, 1010.1.4.2, 1010.1.9.1| |Chapter 12-10-2|Exits. Single-point latching or locking devices.|SFM|Part 2, Section 1010.2.2
    Part 9, Section 1010.2.2| |Chapter 12-10-3|Exits. Emergency exit and panic hardware.
    |SFM|Part 9, Section 1009.12| |Chapter 12-11A,
    12-11B|Detectable warning products and directional
    surfaces|DSA|Part 2, Sections 1112A.9, 1116A.5, 11B-247,
    11B-406.5.12, 11B-705, 11B-810.5.2| |Chapter 12-12|Reserved||| |Chapter 12-13|Standards for insulating material|CA/SFM|Part 2.5, Section R302.10.1
    Part 6, Section 110.8
    Part 9, Section 720, Table 721.1(1)
    Part 11, Section A5.504.4.8| |Chapter 12-16-1|California standard for earthquake-actuated
    automatic gas shutoff systems|DSA|Part 2, Chapters 16 and 16A
    Part 5, Section 1211.8| |Chapter 12-16-2|California standard for residential excess flow
    actuated automatic gas shutoff valves|DSA|Part 5, Section 1209.1| |Chapter 12-31C|Radiation shielding|DPH|Part 2, Section 3102C| |Chapter 12-71|Air filters|SFM|Part 4, Sections 401.2, 509.2.3, 509.2.3.4
    Part 6, Section 120.1| |Chapter 12-72-1|Protective signaling systems.
    Standard test procedures.|SFM|| |Chapter 12-72-2|Protective signaling systems.

  • CRSC § 1009.12 Medium relevance — show source text

    Emergency exit and panic hardware.
    |SFM|Part 9, Section 1009.12| |Chapter 12-11A,
    12-11B|Detectable warning products and directional
    surfaces|DSA|Part 2, Sections 1112A.9, 1116A.5, 11B-247,
    11B-406.5.12, 11B-705, 11B-810.5.2| |Chapter 12-12|Reserved||| |Chapter 12-13|Standards for insulating material|CA/SFM|Part 2.5, Section R302.10.1
    Part 6, Section 110.8
    Part 9, Section 720, Table 721.1(1)
    Part 11, Section A5.504.4.8| |Chapter 12-16-1|California standard for earthquake-actuated
    automatic gas shutoff systems|DSA|Part 2, Chapters 16 and 16A
    Part 5, Section 1211.8| |Chapter 12-16-2|California standard for residential excess flow
    actuated automatic gas shutoff valves|DSA|Part 5, Section 1209.1| |Chapter 12-31C|Radiation shielding|DPH|Part 2, Section 3102C| |Chapter 12-71|Air filters|SFM|Part 4, Sections 401.2, 509.2.3, 509.2.3.4
    Part 6, Section 120.1| |Chapter 12-72-1|Protective signaling systems.
    Standard test procedures.|SFM|| |Chapter 12-72-2|Protective signaling systems. Single-and
    multiple-station fire alarm devices
    mechanically operated type.|SFM|| |Chapter 12-72-3|Protective signaling systems. Smoke detectors,
    combustion products type.|SFM||

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    12-1 ADMINISTRATION

    RESERVED

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    12-3 RELEASING SYSTEMS FOR SECURITY BARS IN DWELLINGS

    (This standard includes provisions of Underwriters Laboratories Subject 2326, Appendix B, dated December 17, 1999, reprinted with their permission.)

    INTRODUCTION

    SECTION 12-3-1—SCOPE

    12-3-1.1 These requirements cover releasing systems for bars, grilles, mesh, glazing or other items intended to provide security at doors and windows required for emergency escape from dwelling units. When actuated by the occupant, the system allows the obstructions over the door or window to be moved so occupants can escape in the event of an emergency.

  • CRSC § 1-2016 Medium relevance — show source text
    Col1 STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES Col3
    DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
    AHAM AHAM AHAM
    AHAM FWD-1-2016 Food Waste Disposers Appliances
    ARCSA ARCSA ARCSA
    ARCSA/ASPE 78-2015 Stormwater Harvesting System Design for Direct End-Use Applications Miscellaneous
    ASABE ASABE ASABE
    ASABE/ICC 802-2014 Landscape Irrigation Sprinkler and Emitter Standard Irrigation
    ASCE ASCE ASCE
    ASCE 25-2016 Earthquake-Actuated Automatic Gas Shutoff Devices Fuel Gas
    ASHRAE ASHRAE ASHRAE
    ASHRAE/IES 90.1-2019 Energy Standard for Buildings Except Low-Rise Residential Buildings Miscellaneous
    ASHRAE/IES 90.2-2018 Energy-Efficient Design of Low-Rise Residential Buildings Miscellaneous
    ASHRAE 188-2021 Legionellosis: Risk Management for Building Water Systems Risk Management
    ASHRAE Guideline 12-
    2020    		 Managing the Risk of Legionellosis Associated with Building Water Systems Risk Management
    ASME ASME ASME
    ASME A13.1-2020 Scheme for the Identification of Piping Systems Piping
    ASME A112.4.3-1999
    (R2019)    		 Plastic Fittings for Connecting Water Closets to the Sanitary Drainage System Fittings
    ASME A112.19.10-2017 Retrofit Dual Flush Devices for Water Closets Fixtures
    ASME A112.21.3M-1985
    (R2017)    		 Hydrants for Utility and Maintenance Use Valves
    ASME B1.20.3-1976
    (R2018)    		 Dryseal Pipe Threads (Inch) Joints
    ASME B16.39-2019 Malleable Iron Threaded Pipe Unions: Classes 150, 250 and 300 Fittings
    ASME B16.40-2019 Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Sys-
    tems    		 Valves
    ASME B31.1-2020 Power Piping Piping
    ASME B36.19M-2018 Stainless Steel Pipe Piping, Ferrous
    ASME BPVC Section IV-
    2021    		 Rules for Construction of Heating Boilers Miscellaneous
    ASPE ASPE ASPE
    ARCSA/ASPE 78-2015 Stormwater Harvesting System Design for Direct End-Use Applications Miscellaneous
    WQA/ASPE/ANSI S-803-
    2017    		 Sustainable Drinking Water Treatment Systems Miscellaneous
    ASSE ASSE ASSE
    ASSE 1017-2009 Temperature Actuated Mixing Valves for Hot Water Distribution Systems Valves
    ASSE 1066-1997 Individual Pressure Balancing In-Line Valves for Individual Fixture Fittings Valves
    ASSE
  • CRSC § 5-5 Medium relevance — show source text

    000|5-5|6-1|4-8|4-10|4-4|3-9|3-6|2-10|2-10| |12|1-#4|60,000|6-7|7-5|5-8|5-11|5-4|4-7|4-3|3-6|3-5| |12|1-#5|40,000|6-9|7-7|5-9|6-0|5-5|4-8|4-4|3-7|3-6| |12|1-#5|60,000|9-4|10-6|8-1|8-4|7-6|6-6|6-1|5-0|4-10| |12|2-#4
    1-#6|40,000|8-8|9-9|7-6|7-9|7-0|6-0|5-8|4-7|4-6| |12|2-#4
    1-#6|60,000|10-6|11-9|9-1|9-5|8-5|7-3|6-10|5-7|5-5| |12|2-#5|40,000|10-8|12-0|9-3|9-7|8-7|7-5|6-11|5-6|5-4| |12|2-#5|60,000|12-10|14-5|11-1|11-6|10-4|8-11|8-4|6-7|6-4| |12|2-#6|40,000|12-7|14-2|10-10|11-3|10-2|8-3|7-6|5-6|5-4| |12|2-#6|60,000|DR|DR|DR|DR|DR|DR|DR|DR|DR| |12|Center distance_A_k, l|Center distance_A_k, l|3-2|4-0|2-4|2-6|2-0|1-6|1-4|0-11|0-10| |16|Span without stirrupsi, j|Span without stirrupsi, j|6-5|7-9|5-7|5-10|5-2|4-5|4-2|3-7|3-6| |16|1-#4|40,000|6-2|7-1|5-6|5-8|5-1|4-5|4-2|3-5|3-4| |16|1-#4|60,000|7-6|8-8|6-8|6-11|6-3|5-5|5-1|4-2|4-0| |16|1-#5|40,000|7-8|8-10|6-10|7-1|6-4|5-6|5-2|4-3|4-1| |16|1-#5|60,000|9-4|10-9|8-4|8-7|7-9|6-8|6-3|5-2|5-0| |16|2-#4
    1-#6|40,

  • CRSC § 5.9.2 Medium relevance — show source text

    (1) Check valves.

    (2) Three-way valves (of the type that completely closes one side before starting to open the other side).

    (3) Reverse flow indicators controlling positive shutoff valves.

    (4) Normally closed air-actuated positive shutoff pressure regulators. [NFPA 54:5.9.2] 1308.11 Low-Pressure Protection. A protective device shall be installed between the meter and the appliance or equipment if the operation of the appliance or equipment is such that it could produce a vacuum or a dangerous reduction in gas pressure at the meter. Such protective devices include, but are not limited to, mechanical, diaphragm-operated, or electrically operated low-pressure shutoff valves. [NFPA 54:5.10]

    1308.12 Shutoff Valves. Shutoff valves shall be selected in

    accordance with Table 1308.12. Shutoff valves of size 1 inch

    (25 mm) National Pipe Thread and smaller shall be listed and labeled. Where used outdoors, such use shall be in accordance with the manufacturer’s recommendation. [NFPA 54:5.11]

    «

    «

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    FUEL GAS PIPING

    Exceptions: (1) A regulator and vent limiting means combination listed as complying with CSA/ANSI Z21.80/CSA 6.22, shall not be required to be vented to the outdoors.

    (2) A listed gas appliance regulator factory equipped with a vent limiting device is not required to be vented to the outdoors.

    (2) Materials for vent piping shall be in accordance with Section 1308.4 through Section 1308.4.10.5. (3) The vent terminus shall be designed to prevent the entry of water, insects, and other foreign matter that could cause blockage. (4) Vent piping shall be installed to minimize static loads and bending moments placed on the regulators and gas pressure control devices.

    (5) Vents shall terminate not less than 3 feet (914 mm) from a possible source of ignition. (6) At locations where a vent termination could be submerged during floods or snow accumulations, an antiflood-type breather vent fitting shall be installed, or the vent terminal shall be located above the height of the expected floodwaters or snow.

    (7) Vent piping from pressure regulators and gas pressure controls shall not be connected to a common manifold that serves a bleed line from a diaphragm-type gas valve.

    [NFPA 54:5.14]

    1309.0 Excess Flow Valve.

    1309.1 General. Where automatic excess flow valves are installed, they shall be listed in accordance with ANSI Z21.93/CSA 6.30 and shall be sized and installed in accordance with the manufacturers’ instructions. [NFPA 54:5.12]

    1310.0 Gas Piping Installation. 1310.1 Piping Underground. Underground gas piping shall be installed with sufficient clearance from any other underground structure to avoid contact therewith, to allow maintenance, and to protect against damage from proximity to other structures. Underground plastic piping shall be installed with sufficient clearance or shall be insulated from any source of heat so as to prevent the heat from impairing the serviceability of the pipe.

  • CRSC § 5.9.1.1 Medium relevance — show source text

    Gas and air combustion mixers incorporating double diaphragm “zero” or “atmosphere” governors or regulators shall require no further protection unless connected directly to compressed air or oxygen at pressures of 5 psi (34 kPa) or more. [NFPA 54:5.9.1.1 – 5.9.1.2]

    1208.11.1 Protective Devices. Protective devices

    shall include but not be limited to the following:

    (1) Check valves.

    (2) Three-way valves (of the type that completely closes one side before starting to open the other side).

    (3) Reverse flow indicators controlling positive shutoff valves.

    (4) Normally closed air-actuated positive shutoff pressure regulators. [NFPA 54:5.9.2]

    1208.12 Low-Pressure Protection. A protective device shall be installed between the meter and the appliance or equipment if the operation of the appliance or equipment is such that it could produce a vacuum or a dangerous reduction in gas pressure at the meter. Such protective devices include, but are not limited to, mechanical, diaphragm-operated, or electrically operated low-pressure shutoff valves. [NFPA 54:5.10]

    1208.13 Shutoff Valves. Shutoff valves shall be selected in

    accordance with Table 1208.13. Shutoff valves of size 1 inch

    (25 mm) National Pipe Thread and smaller shall be listed and labeled. Where used outdoors, such use shall be in accordance with the manufacturer’s recommendation. [NFPA 54:5.11]

    1208.14 Expansion and Flexibility. Piping systems shall be designed to prevent failure from thermal expansion or contraction. [NFPA 54:5.13.1]

    1208.14.1 Special Local Conditions. Where local conditions include earthquake, tornado, unstable ground, or flood hazards, special consideration shall be given to increased strength and flexibility of piping supports and connections. [NFPA 54:5.13.2]

    1208.15 Pressure Regulator and Pressure Control Venting. The venting of the atmospheric side of diaphragms in line pressure regulators, gas appliance regulators, and gas pressure limit controls shall be in accordance with all of the following:

    (1) An independent vent pipe to the outdoors, sized in accordance with the device manufacturer’s instructions, shall be provided where the location of a device is such that a discharge of fuel gas will cause a hazard. For devices other than appliance regulators, vents are not required to be independent where the vents are connected to a common manifold designed in accordance with engineering methods to minimize backpressure in the event of diaphragm failure and such design is approved.

    Exceptions:

    (1) A regulator and vent limiting means combination listed as complying with CSA/ANSI Z21.80/CSA 6.22, shall not be required to be vented to the outdoors.

    «

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    222 2025 CALIFORNIA PLUMBING CODE

    ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

    FUEL GAS PIPING

    (2) A listed gas appliance regulator factory equipped with a vent limiting device is not required to be vented to the outdoors.

    (2) Materials for vent piping shall be in accordance with Section 1208.5 through Section 1208.5.12.5.

  • CRSC § 6-2 Medium relevance — show source text

    000|6-2|6-9|5-2|5-4|4-9|4-1|3-10|3-2|3-1| |8|1-#5|60,000|7-5|8-1|6-2|6-5|5-9|4-11|4-7|3-9|3-8| |8|2-#4
    1-#6|40,000|6-11|7-6|5-9|6-0|5-4|4-7|4-4|3-6|3-5| |8|2-#4
    1-#6|60,000|8-3|9-0|6-11|7-2|6-5|5-6|5-2|4-2|4-1| |8|2-#5|40,000|8-5|9-2|7-0|7-3|6-6|5-7|5-3|4-2|4-0| |8|2-#5|60,000|DR|DR|DR|DR|DR|DR|DR|DR|DR| |8|Center distance_A_k, l|Center distance_A_k, l|2-1|2-6|1-5|1-6|1-3|0-11|0-10|0-6|0-6| |12|Span without stirrupsi, j|Span without stirrupsi, j|4-10|5-8|4-0|4-2|3-9|3-2|3-0|2-7|2-6| |12|1-#4|40,000|5-5|6-1|4-8|4-10|4-4|3-9|3-6|2-10|2-10| |12|1-#4|60,000|6-7|7-5|5-8|5-11|5-4|4-7|4-3|3-6|3-5| |12|1-#5|40,000|6-9|7-7|5-9|6-0|5-5|4-8|4-4|3-7|3-6| |12|1-#5|60,000|9-4|10-6|8-1|8-4|7-6|6-6|6-1|5-0|4-10| |12|2-#4
    1-#6|40,000|8-8|9-9|7-6|7-9|7-0|6-0|5-8|4-7|4-6| |12|2-#4
    1-#6|60,000|10-6|11-9|9-1|9-5|8-5|7-3|6-10|5-7|5-5| |12|2-#5|40,000|10-8|12-0|9-3|9-7|8-7|7-5|6-11|5-6|5-4| |12|2-#5|60,000|12-10|14-5|11-1|11-6|10-4|8-11|8-4|6-7|6-4| |12|2-#6|40,

  • CRSC § 12-7 Medium relevance — show source text

    000|12-7|14-5|11-2|11-6|10-5|8-7|8-1|6-6|6-4| |12|2-#6|40,000|12-4|14-2|10-11|11-4|10-2|8-5|7-8|5-7|5-5| |12|2-#6|60,000|14-9|17-0|13-1|13-6|12-2|10-0|9-1|6-6|6-4| |12|Center distance_A_k, l|Center distance_A_k, l|3-9|4-11|2-11|3-2|2-7|1-9|1-7|1-0|1-0| |16|Span without stirrupsi, j|Span without stirrupsi, j|7-1|9-0|6-4|6-8|5-10|4-9|4-6|3-9|3-8| |16|1-#4|40,000|5-11|7-0|5-5|5-8|5-1|4-3|4-0|3-3|3-2| |16|1-#4|60,000|7-3|8-7|6-8|6-11|6-3|5-2|4-10|3-11|3-10| |16|1-#5|40,000|7-4|8-9|6-9|7-0|6-4|5-3|4-11|4-0|3-11| |16|1-#5|60,000|9-0|10-8|8-3|8-7|7-9|6-5|6-0|4-11|4-9| |16|2-#4
    1-#6|40,000|8-4|9-11|7-8|7-11|7-2|5-11|5-7|4-6|4-5| |16|2-#4
    1-#6|60,000|10-2|12-0|9-4|9-8|8-9|7-3|6-10|5-6|5-5| |16|2-#5|40,000|10-4|12-3|9-6|9-10|8-11|7-4|6-11|5-8|5-6| |16|2-#5|60,000|14-4|17-1|13-3|13-8|12-4|10-3|9-8|7-10|7-8| |16|2-#6|40,000|14-1|16-9|13-0|13-5|12-2|10-1|9-6|7-0|6-10| |16|2-#6|60,000|17-0|20-2|15-8|16-2|14-7|12-0|10-11|8-0|7-9| |16|Center distance_A_k, l|Center distance_A_k, l|4-9|6-8|4-0|4-4|3-6|2-5|2-2|1-5|1-4|

Frequently asked questions

Who decides whether a building must have an earthquake‑actuated shutoff valve?

Local ordinance and the authority having jurisdiction (AHJ) determine whether installation is required; the Plumbing Code references local ordinance triggers (see Plumbing Code § 1211.8) .

What standard must the device meet for Division of State Architect (DSA) certification?

The device must be certified to ASCE 25‑16 (ANSI/ASCE/SEI 25‑16) as stated in § 12‑16‑101 of the CRSC .

Can I install a non‑DSA‑certified device if it’s less expensive?

No — where local ordinance mandates installation and the building is open to the public, the Plumbing Code prohibits use of devices that have not been certified by the State Architect (Plumbing Code § 1211.8) .

If I buy a DSA‑certified device, do I still need a permit?

Yes — installations must follow the California Plumbing Code and local permitting procedures; § 12‑16‑101.1 ties installation to the Plumbing Code requirements .

Where do I find the detailed test methods and performance criteria for the device?

The CRSC adopts ASCE 25‑16 for certification; consult ASCE 25‑16 for test methods and performance criteria, and the Division of the State Architect for the device listing and certification status (see § 12‑16‑101) .

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Related in the CRSC

Releasing systems for security bars and emergency‑escape requirements

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Safety‑critical referenced standards and technical chapters in Part 12

California Referenced Standards Code