CRC · California Residential Code

What are the code requirements for LP‑gas installations and residential LP equipment?

Q: Do I follow the Residential Code or the Plumbing/Mechanical Code for propane piping?

Follow the California Plumbing Code and California Mechanical Code for technical fuel‑gas requirements; the CRC explicitly does not adopt the fuel‑gas chapters and defers to those codes.

Q: Are there material limits I must follow for LP piping in a house?

Yes — CPC § 1208.5 prescribes acceptable piping materials and joining methods (through § 1208.5.6.3 ). If you can’t find the exact subtext in your copy, confirm via the full CPC or AHJ.

Q: What if I can’t find § 1212.11 text in my copy of the CPC?

The file previews I searched list § 1212.11 in the CPC index but the full subsection text did not appear in the retrieved previews. For the authoritative text, consult the full CPC (Title 24, Part 5) or your AHJ.

Summary: The California Residential Code defers fuel‑gas technical rules to the California Plumbing and Mechanical Codes. For LP‑gas, the controlling California Plumbing Code limits indoor piping to 5 psi unless specific exceptions apply — notably **§ 1208.4(8)**: LP‑gas piping with operating pressure above **20 psi** must be installed in accordance with **NFPA 58**. Materials and joining methods are covered in CPC **§ 1208.5** through **§ 1208.5.6.3**. If you need the exact wording of **§ 1212.11** or the detailed text of **§ 1208.5.6.3**, consult the full California Plumbing Code or your local code official; the uploaded file previews referenced above show the CPC entries but did not include every subsection text.

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Last reviewed: July 6, 2026

What the code requires — plain English

The California Residential Code (CRC) does not adopt the model fuel‑gas (Part VI / Chapter 24) provisions; fuel‑gas technical requirements for residences are enforced by the California Plumbing Code (CPC) and California Mechanical Code (CMC). See the CRC note: § Part VI (Fuel Gas) — not adopted; see CMC & CPC.
The CPC controls the technical requirements cited by the user: § 1208.4(8) (LP‑gas piping at pressures > 20 psi must comply with NFPA 58) and § 1208.5.6.3 (piping materials/joining requirements are specified in the CPC); the CPC index also references § 1212.11.

The single most important rule: if you plan to use LP‑gas piping at an operating pressure greater than 20 psi, the system must be treated as an LP‑Gas system and be installed in accordance with NFPA 58 (this is the trigger that moves the design/installation away from typical low‑pressure building gas rules). § 1208.4(8).

Requirements in detail

High‑level, CRC → CPC/CMC mapping

CRC: Chapter 24 (Fuel Gas) is not adopted in California and defers to the CPC/CMC for fuel‑gas rules.
CPC (Part 5, Title 24) contains the operative sections that set limits, materials and references to NFPA 54 and NFPA 58. The CPC explicitly calls out the LP‑gas items you referenced: § 1208.4(8) and § 1208.5.6.3.

Key numeric thresholds and what they mean

Decision dimension	Value / threshold	What that controls	Code Reference
Indoor piping maximum operating pressure (general)	5 psi (34 kPa)	Piping inside buildings shall not exceed this unless specific conditions are met	§ 1208.4
LP‑gas higher‑pressure exception	> 20 psi (138 kPa) for LP‑gas piping systems	LP‑gas piping systems operating above 20 psi are permitted provided the installation complies with NFPA 58 (i.e., treated under LP‑Gas code)	§ 1208.4(8)
Materials/joining	See CPC Sections 1208.5.1 – 1208.5.6.3	CPC enumerates acceptable materials and joining methods; the code ties these to referenced standards (ASTM, ASME, UL)	§ 1208.5 – 1208.5.6.3
Referenced LP‑Gas standard	NFPA 58 (Liquefied Petroleum Gas Code)	Where CPC defers to NFPA 58 for LP‑gas specifics (containers, installation details, spacing, vents, overfill, etc.)	CPC references NFPA 58 for the LP‑gas exception and related sections 1208.4(8), 1208.5.6.3, 1212.11.

Notes about materials and joining

The CPC groups acceptable piping materials and joining methods under § 1208.5 and explicitly limits reused materials, requires listed/approved fittings, and points to specific subsections including 1208.5.6.3 for the final material/joining rules. The exact subtext of § 1208.5.6.3 (detailed list of permitted materials/joints) appears in the CPC; the CPC text indicates that materials and joining methods must meet the enumerated subsections and referenced standards.

What § 1212.11 is (status)

The CPC index and referenced standards list § 1212.11 among LP‑gas related references, but the full body text for § 1212.11 was not located in the provided file previews. The CPC index shows NFPA 58 is a controlling reference for the CPC sections you cited (including 1212.11). If you need the precise wording of § 1212.11, consult the full CPC text or the AHJ — I could not retrieve the body of that exact subsection from the uploaded files.

Practical takeaways (installation controls)

If your LP system’s piping or appliance supply results in pressures ≤ 5 psi inside the building, normal CPC/IFGC (NFPA 54) fuel‑gas piping rules apply. § 1208.4.
If LP‑gas piping operates > 20 psi (for example, certain bulk or dealer systems, or unregulated high‑pressure LP service), the system must be installed to NFPA 58 requirements (container location/spacing, pressure relief, venting, materials rated for liquid service, overfill prevention, etc.) as allowed by § 1208.4(8).
Materials and connections must be those listed/allowed by CPC § 1208.5 through § 1208.5.6.3 and by the referenced standards (ASTM, ASME, UL): do not use unknown or reused fittings without verification.

Exceptions & special cases

Temporary piping during construction, piping inside designated mechanical/boiler rooms, agricultural installations, and welded/flanged systems have specific exceptions to the 5 psi indoor limit under § 1208.4 — see the list of numbered exceptions (items 1–8) in the CPC; item (8) is the LP‑gas/NFPA 58 exception.
CRC-level note: since the CRC does not adopt Part VI, installations in single family dwellings must still follow CPC/CMC/NFPA 58 as applicable — the CRC will not contain the technical LP‑gas detail.

Common mistakes

Treating the CRC fuel‑gas chapter as the final authority — in California that chapter is not adopted; the correct technical rules live in CPC/CMC (and NFPA 58 for LP‑gas specifics). Always confirm which Title 24 part controls.
Assuming any indoor piping pressure is OK up to 5 psi — some installations (LP at >20 psi) must be handled under NFPA 58 per § 1208.4(8) (special design and equipment).
Reusing valves/fittings or using non‑listed materials without checking the CPC’s material/joining subsections — CPC requires materials to meet the listed standards and prohibits reuse unless verified. § 1208.5.

Worked example — residential standby generator fed from an LP tank

Scenario: Homeowner has a 500‑gallon ASME LP tank on the property. The supplier proposes to run a liquid line that supplies generator equipment with a service pressure of 60 psi at the tank outlet and a final regulated appliance inlet pressure of 11 inches water column at the generator (typical generator regulator).

Steps and code logic:

Is the piping inside the building going to see pressures > 5 psi? The upstream line before regulators is 60 psi — yes. § 1208.4 limits indoor piping to 5 psi except for enumerated conditions.
Is this an LP‑Gas piping system with operating pressure > 20 psi? Yes — the tank outlet is 60 psi, so the system is an LP‑Gas system above 20 psi. That triggers the NFPA 58 path under § 1208.4(8).
Consequence: The installation must comply with NFPA 58 for piping, regulators, venting, pressure‑relief orientation, container spacing, overfill prevention, and materials suitable for liquid‑service or vaporization as relevant. The contractor/designer must follow NFPA 58 details and the CPC will enforce those requirements per § 1208.4(8).
Materials and connections used from the tank to the generator and within the building must be permitted by § 1208.5 (and referenced ASTM/ASME/UL standards); if the piping inside the building will see pressure >5 psi, the exceptions must be satisfied (welded, listed fittings, ventilated chase, or the NFPA 58 compliance route). § 1208.5 and § 1208.4.

Result (practical): Design the system so the incoming high pressure is reduced by approved regulators and overpressure protection, install piping and vents per NFPA 58 and CPC material rules, and submit construction documents if required by the AHJ (CPC says construction documents are required for larger containers/installations; see fire code/NFPA 58 thresholds).

Related provisions (quick reference)

§ 1208.4(8) — LP‑gas piping system > 20 psi must comply with NFPA 58.
§ 1208.5.6.3 — end of CPC’s listed acceptable piping materials / joining methods for fuel gas systems (see CPC §1208.5).
§ 1212.11 — listed in CPC references as an LP‑gas related subsection (text not located in provided files — consult full CPC).
CRC note: Chapter 24 (Fuel Gas) is not adopted by California — use CPC/CMC instead.

Code references

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

CRC § 1201.0 High relevance — show source text
1201.0 General.

1201.1 Applicability. The regulations of this chapter shall govern the installation of fuel gas piping in or in connection with a building, structure or within the property lines of premises up to 5 pounds-force per square inch (psi) (34 kPa) for natural gas and 10 psi (69 kPa) for undiluted propane, other than service pipe. Fuel oil piping systems connected to oil- burning equipment shall be installed in accordance with NFPA 31. Fuel oil piping systems connected to internal com- bustion engines and gas turbines shall be installed in accor- dance with NFPA 37.

1202.0 Coverage of Piping System. 1202.1 General. Coverage of piping systems shall extend from the point of delivery to the appliance connections. For other than undiluted liquefied petroleum gas (LP-Gas) systems, the point of delivery shall be the outlet of the service meter assembly or the outlet of the service regulator or service shutoff valve where no meter is provided. For undiluted LP-Gas systems, the point of delivery shall be considered to be the outlet of the final pressure regulator, exclusive of line gas regulators where no meter is installed. Where a meter is installed, the point of delivery shall be the outlet of the meter.

[NFPA 54:1.1.1.1(A)] 1202.2 Piping System Requirements. Requirements for piping systems shall include design, materials, components, fabrication, assembly, installation, testing, inspection, operation, and maintenance. [NFPA 54:1.1.1.1(E)] 1202.3 Applications. This chapter shall not apply to the following items:

(1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system.

(2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural

purposes.

(3) Raw material (feedstock) applications except for piping to special atmosphere generators.

(4) Oxygen-fuel gas cutting and welding systems.

(5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.

(6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.

(7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.

(8) LP-Gas installations at utility gas plants.

(9) Liquefied natural gas (LNG) installations.

(10)Fuel gas piping in electric utility power plants.

(11)Proprietary items of equipment, apparatus, or instruments such as gas-generating sets, compressors, and calorimeters.

(12)LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.

(13)LP-Gas piping for buildings under construction or renovations that is not to become part of the permanent building piping system—that is, temporary fixed piping for building heat.

(14)Installation of LP-Gas systems for railroad switch heating.

(15)Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles.

(16)Gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in distribution of gas, other than undiluted LP-Gas.
CRC § 6104.4 Medium relevance — show source text
6104.4 Multiple LP-gas container installations. Multiple LP-gas container installations with a total water storage capacity of more than 180,000 gallons (681.3 kL) [150,000-gallon (567.8 kL) LP-gas capacity] shall be subdivided into groups containing not more than 180,000 gallons (681.3 kL) in each group. Such groups shall be separated by a distance of not less than 50 feet (15 240 mm), unless the containers are protected in accordance with one of the following:
1. Mounded in an approved manner.
2. Protected with approved insulation on areas that are subject to impingement of ignited gas from pipelines or other leakage.
3. Protected by fire walls of approved construction.
4. Protected by an approved system for application of water as specified in Table 6.5.1.2 of NFPA 58.
5. Protected by other approved means.
Where one of these forms of protection is provided, the separation shall be not less than 25 feet (7620 mm) between LP-gas container groups.

SECTION 6105—PROHIBITED USE OF LP-GAS

6105.1 Nonapproved equipment. LP-gas shall not be used for the purpose of operating devices or equipment unless such device or equipment is approved for use with LP-gas.

6105.2 Release to the atmosphere. LP-gas shall not be released to the atmosphere, except in accordance with Section 7.3 of NFPA 58.

SECTION 6106—DISPENSING AND OVERFILLING

6106.1 Attendants. Dispensing of LP-gas shall be performed by a qualified attendant.

6106.2 Overfilling. LP-gas containers shall not be filled or maintained with LP-gas in excess of either the volume determined using the fixed liquid-level gauge installed in accordance with the manufacturer’s specifications and in accordance with Section 5.9.5 of NFPA 58 or the weight determined by the required percentage of the water capacity marked on the container. Portable LP-gas containers shall not be refilled unless equipped with an overfilling prevention device (OPD) where required by Section 5.9.3 of NFPA 58.

6106.3 Dispensing locations. The point of transfer of LP-gas from one LP-gas container to another shall be separated from exposures as specified in NFPA 58.

SECTION 6107—SAFETY PRECAUTIONS AND DEVICES

6107.1 Safety devices. Safety devices on LP-gas containers, equipment and systems shall not be tampered with or made ineffective.

6107.2 Smoking and other sources of ignition. “No Smoking” signs complying with Section 310 shall be posted where required by the fire code official. Smoking within 25 feet (7620 mm) of a point of transfer, while filling operations are in progress at LP-gas containers or vehicles, shall be prohibited.

Control of other sources of ignition shall comply with Chapter 3 of this code and Section 6.25 of NFPA 58.

6107.3 Clearance to combustibles. Weeds, grass, brush, trash and other combustible materials shall be kept not less than 10 feet (3048 mm) from LP-gas tanks or containers.

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LIQUEFIED PETROLEUM GASES
CRC § 6101.1 Medium relevance — show source text
SECTION 6101—GENERAL

6101.1 Scope. Storage, handling and transportation of liquefied petroleum gas (LP-gas) and the installation of LP-gas equipment pertinent to systems for such uses shall comply with this chapter and NFPA 58. Properties of LP-gases shall be determined in accordance with Appendix B of NFPA 58.

[California Code of Regulations, Title 19, Division 1, §3.22(a) and (c)] Liquefied Petroleum Gas.

(a) When liquefied petroleum gas is used, the storage and handling thereof shall conform to the appropriate provisions referenced in California Code of Regulations, Title 19, Division 1, Sections 3.02 and 3.03.

(c) California Code of Regulations, Title 8, Section 475 is hereby adopted as a part of Title 19, Division 1 regulations.

6101.2 Permits. Permits shall be required as set forth in Sections 105.5 and 105.6.

Distributors shall not fill an LP-gas container for which a permit is required unless a permit for installation has been issued for that location by the fire code official.

6101.3 Construction documents. Where a single LP-gas container is more than 2,000 gallons (7570 L) in water capacity or the aggregate water capacity of LP-gas containers is more than 4,000 gallons (15 140 L), the installer shall submit construction documents for such installation.

SECTION 6102—DEFINITIONS

6102.1 Definitions. The following terms are defined in Chapter 2:

LIQUEFIED PETROLEUM GAS (LP-gas).

LP-GAS CONTAINER.

SECTION 6103—INSTALLATION OF EQUIPMENT

6103.1 General. LP-gas equipment shall be installed in accordance with the International Fuel Gas Code and NFPA 58, except as otherwise provided in this chapter.

6103.2 Use of LP-gas containers in buildings. The use of LP-gas containers in buildings shall be in accordance with Sections 6103.2.1 through 6103.2.2.

6103.2.1 Portable containers. Portable LP-gas containers, as defined in NFPA 58, shall not be used in buildings except as specified in NFPA 58 and Sections 6103.2.1.1 through 6103.2.1.7.

6103.2.1.1 Use in basement, pit or similar location. LP-gas containers shall not be used in a basement, pit, above-grade underfloor space or similar location where heavier-than-air gas might collect unless such location is provided with an approved means of ventilation.

Exception: Use with self-contained torch assemblies in accordance with Section 6103.2.1.6.

6103.2.1.2 Construction and temporary heating. Portable LP-gas containers are allowed to be used in buildings or areas of buildings undergoing construction or for temporary heating as set forth in Sections 6.22.4, 6.22.5 and 6.22.8 of NFPA 58.
CRC § 4101.2 Medium relevance — show source text
Exception: Temporary heating devices used in the course of construction, alteration and demolition of structures shall comply with Section 3304.

4101.2 Permits. Operational permits shall be obtained as set forth in Section 105.5.

4101.3 Listed equipment. Mobile and portable equipment and devices used for temporary heating and cooking shall be listed and labeled. The installation, maintenance and use of equipment and devices shall be in accordance with their listing and the manufacturer’s instructions.

4101.4 Operation and maintenance. The building owner or the equipment owner/operator shall operate and maintain the equipment in accordance with the manufacturer’s operating instructions and this section.

4101.4.1 Wildfire risk area. Temporary heating and cooking operations shall be in accordance with applicable local wildfire risk area regulations.

4101.4.2 Attendance. Mobile and portable heating and cooking equipment shall be constantly attended while in use and until cooled to a safe temperature.

4101.4.3 Fire extinguishers. Not fewer than one portable fire extinguisher complying with Section 906 with a minimum 4-A rating or other approved on-site fire-extinguishing equipment shall be available for immediate utilization.

4101.5 Electrical heating and cooking equipment. Electrical cooking and heating equipment shall comply with the California Elec- trical Code .

4101.6 LP-gas. The storage, handling and use of LP-gas and LP-gas equipment shall be in accordance with Sections 4101.6.1 through 4101.6.3.

4101.6.1 General. LP-gas equipment such as containers, tanks, piping, hoses, fittings, valves, tubing and other related components shall be approved and in accordance with Chapter 61 and with the International Fuel Gas Code .

[California Code of Regulations, Title 19, Division 1, §325] Liquefied Petroleum Gas.

Liquefied petroleum gas shall not be stored or used in connection with any tent unless the storage containers, equipment, fittings, appliances, placement, use and operation complies with the provisions of California Code of Regulations, Title 8, Article 5, Subchap- ter 1, Chapter 4.

4101.6.2 Location of containers. LP-gas containers and tanks shall be located outside in accordance with Table 6104.3. Pressure relief devices shall be pointed away from the tent or membrane structure.

4101.6.3 Protection and security. Portable LP-gas containers, tanks, piping, valves and fittings that are located outside and are being used to fuel equipment inside a tent or membrane structure shall be adequately protected to prevent tampering, damage by vehicles or other hazards and shall be located in an approved location. Portable LP-gas containers shall be secured to prevent unauthorized movement.

4101.6.4 Refueling. Exchanging of LP containers shall be conducted in accordance with Chapter 61. Liquid transfer of LP gas shall be in accordance with Chapter 7 of NFPA 58.

4101.7 Oil-fired heaters. Oil-fired cooking and heating equipment shall comply with Section 605 and this chapter.

4101.8 Refueling of flammable and combustible liquid-fueled equipment. Refueling operations for liquid-fueled equipment or devices shall be conducted in accordance with Section 5705 and all of the following:
1. Refueling operations for liquid-fueled equipment or devices shall be conducted by trained personnel in accordance with the manufacturer’s instructions and this code.
CRC § 1.1.1.2 Medium relevance — show source text
(1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system.

(2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural

purposes.

(3) Raw material (feedstock) applications except for piping to special atmosphere generators.

(4) Oxygen-fuel gas cutting and welding systems.

(5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.

(6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.

(7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.

(8) LP-Gas installations at utility gas plants.

(9) Liquefied natural gas (LNG) installations.

(10)Fuel gas piping in electric utility power plants.

(11)Proprietary items of equipment, apparatus, or instruments such as gas-generating sets, compressors, and calorimeters.

(12)LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.

(13)LP-Gas piping for buildings under construction or renovations that is not to become part of the permanent building piping system—that is, temporary fixed piping for building heat.

(14)Installation of LP-Gas systems for railroad switch heating.

(15)Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles.

(16)Gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in distribution of gas, other than undiluted LP-Gas.

(17)Building design and construction, except as specified herein.

(18)Fuel gas systems on recreational vehicles manufactured in accordance with NFPA 1192.

(19)Fuel gas systems using hydrogen as a fuel.

(20)Construction of appliances. {NFPA 54:1.1.1.2}

1203.0 Inspection.

1203.1 Inspection Notification. Upon completion of the installation, alteration, or repair of gas piping, and prior to the use thereof, the Authority Having Jurisdiction shall be notified that such gas piping is ready for inspection.

1203.2 Excavation. Excavations required for the installation of underground piping shall be kept open until the piping has been inspected and approved. Where such piping is covered or concealed before such approval, it shall be exposed upon the direction of the Authority Having Jurisdiction.

1203.3 Type of Inspections. The Authority Having Jurisdiction shall make the following inspections and either shall approve that portion of the work as completed or shall notify the permit holder wherein the same fails to be in accordance with this code.

1203.3.1 Rough Piping Inspection. This inspection shall be made after gas piping authorized by the permit has been installed and before such piping has been covered or concealed or fixture or appliance has been attached thereto. This inspection shall include a determination that the gas piping size, material, and installation meet the requirements of this code.

1203.3.2 Final Piping Inspection. This inspection shall be made after piping authorized by the permit has been installed, and after portions, thereof that are to be covered or concealed are so concealed, and before fixture, appliance, or shutoff valve has been attached thereto.

2025 CALIFORNIA PLUMBING CODE 215
CRC § 1.11.0. Medium relevance — show source text
This state agency does not adopt sections identified with the following symbol: † The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

2025 CALIFORNIA MECHANICAL CODE 273

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

274 2025 CALIFORNIA MECHANICAL CODE

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

CHAPTER 13

FUEL GAS PIPING

1301.0 Scope of Gas Piping.

1301.1 Applicability. The regulations of this chapter shall govern the installation of fuel gas piping in or in connection with a building, structure or within the property lines of premises up to 5 pounds-force per square inch (psi) (34 kPa) for natural gas and 10 psi (69 kPa) for undiluted propane, other than service pipe.

1302.0 Coverage of Piping System.

1302.1 General. Coverage of piping systems shall extend from the point of delivery to the appliance connections. For other than undiluted liquefied petroleum gas (LP-Gas) systems, the point of delivery shall be the outlet of the service meter assembly or the outlet of the service regulator or service shutoff valve where no meter is provided. For undiluted LP-Gas systems, the point of delivery shall be considered to be the outlet of the final pressure regulator, exclusive of line gas regulators where no meter is installed. Where a meter is installed, the point of delivery shall be the outlet of the meter.

[NFPA 54:1.1.1.1(A)]

1302.2 Piping System Requirements. Requirements for piping systems shall include design, materials, components, fabrication, assembly, installation, testing, inspection, operation, and maintenance. [NFPA 54:1.1.1.1(E)]

1302.3 Applications. This chapter shall not apply to the following items:

(1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system.

(2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural

purposes.

(3) Raw material (feedstock) applications except for piping to special atmosphere generators.

(4) Oxygen-fuel gas cutting and welding systems.

(5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.

(6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.

(7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.

(8) LP-Gas installations at utility gas plants.

(9) Liquefied natural gas (LNG) installations.

(10)Fuel gas piping in electric utility power plants.

(11)Proprietary items of equipment, apparatus, or instruments such as gas-generating sets, compressors, and calorime ters.

(12)LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.

CRC § 4.2.4.1 Medium relevance — show source text

[NFPA 501A:4.2.4.1 – 4.2.4.3]

E 403.0 Multiple Manufactured Home Site Fuel Dis- tribution and Supply Systems.

E 403.1 Manufactured Home Community LP-Gas Supply Systems. Where 10 or more customers are served by one LP-Gas supply system, the installation of the gas supply system shall be in accordance with 49 CFR 192. Other types of liquefied petroleum gas supply systems and the storage and handling of LP-Gas shall be in accordance with NFPA 58 (See also Section E 403.10). [NFPA 501A:4.3.2.1 – 4.3.2.2]

E 403.2 Required Gas Supply. The minimum hourly volume of gas required at each manufactured home site outlet or any section of the manufactured home community gas piping system shall be calculated as shown in Table E 403.2.

In extreme climate areas, additional capacities other than those in Table E 403.2 shall be considered. [NFPA 501A:4.3.4.1 – 4.3.4.2]

TABLE E 403.2

DEMAND FACTORS FOR USE IN CALCULATING GAS PIPING

SYSTEMS IN MANUFACTURED HOME COMMUNITIES

[NFPA 501A: TABLE 4.3.4.1]

NUMBER OF MANUFACTURED HOME SITES	BTU/H PER MANUFACTURED HOME SITE
1	125 000
2	117 000
3	104 000
4	96 000
5	92 000
6	87 000
7	83 000
8	81 000
9	79 000
10	77 000
11–20	66 000
21–30	62 000
31–40	58 000
41–60	55 000
Over 60	50 000

For SI units: 1000 British thermal units per hour = 0.293 kW

E 403.3 Size. The size of each section of a gas piping system shall be determined in accordance with NFPA 54/ANSI Z223.1 or by other standard engineering methods acceptable to the Authority Having Jurisdiction. [NFPA 501A:4.3.5.1]

E 403.4 Pressure. Where all connected appliances are operated at their rated capacity, the gas supply pressure shall be not less than 7 inches water column (1.7 kPa). The gas supply pressure shall not exceed 14 inches water column (3.5 kPa). [NFPA 501A:4.3.5.2] E 403.5 Metal Gas Piping. Metal gas pipe shall be standard-weight wrought iron or steel (galvanized or black), yellow brass containing not more than 75 percent copper, or internally tinned or treated copper of iron pipe size. Galvanizing shall not be considered protection against corrosion.

CRC § 1.11. Medium relevance — show source text
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- The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Fire Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same. The state agency does not adopt sections identified by the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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61 LIQUEFIED PETROLEUM GASES

User notes:

About this chapter: Chapter 61 provides requirements for the safe handling, storing and use of LP-gas to reduce the possibility of damage to containers, accidental releases of LP-gas, and exposure of flammable concentrations of LP-gas to ignition sources. LP-gas (notably propane) is well-known as a camping fuel for cooking, lighting, heating and refrigerating and also remains a popular standby fuel supply for auxiliary generators, as well as being widely used as an alternative motor vehicle fuel. Its characteristic as a clean-burning fuel has resulted in the addition of propane dispensers to service stations throughout the country. Dispensing LP-gas into motor vehicles is addressed by Chapter 23.

SECTION 6101—GENERAL

6101.1 Scope. Storage, handling and transportation of liquefied petroleum gas (LP-gas) and the installation of LP-gas equipment pertinent to systems for such uses shall comply with this chapter and NFPA 58. Properties of LP-gases shall be determined in accordance with Appendix B of NFPA 58.

[California Code of Regulations, Title 19, Division 1, §3.22(a) and (c)] Liquefied Petroleum Gas.

(a) When liquefied petroleum gas is used, the storage and handling thereof shall conform to the appropriate provisions referenced in California Code of Regulations, Title 19, Division 1, Sections 3.02 and 3.03.

(c) California Code of Regulations, Title 8, Section 475 is hereby adopted as a part of Title 19, Division 1 regulations.

6101.2 Permits. Permits shall be required as set forth in Sections 105.5 and 105.6.

Distributors shall not fill an LP-gas container for which a permit is required unless a permit for installation has been issued for that location by the fire code official.

6101.3 Construction documents. Where a single LP-gas container is more than 2,000 gallons (7570 L) in water capacity or the aggregate water capacity of LP-gas containers is more than 4,000 gallons (15 140 L), the installer shall submit construction documents for such installation.

SECTION 6102—DEFINITIONS

6102.1 Definitions. The following terms are defined in Chapter 2:

LIQUEFIED PETROLEUM GAS (LP-gas).

LP-GAS CONTAINER.

SECTION 6103—INSTALLATION OF EQUIPMENT
CRC § 304.8 Medium relevance — show source text

except that all parts of an underground LP-gas container shall be not less than 10 feet from a building or lot line of adjoining property that can be built on.
b.
For other than installations in which the overhanging structure is 50 feet or more above the relief-valve discharge outlet. In applying the distance between buildings and ASME
LP-gas containers with a water capacity of 125 gallons or more, not less than 50 percent of this horizontal distance shall also apply to all portions of the building that project more
than 5 feet from the building wall and that are higher than the relief valve discharge outlet. This horizontal distance shall be measured from a point determined by projecting the
outside edge of such overhanging structure vertically downward to grade or other level on which the LP-gas container is installed. Distances to the building wall shall be not less
than those prescribed in this table.
c.
Where underground multicontainer installations are composed of individual LP-gas containers having a water capacity of 125 gallons or more, such containers shall be
installed so as to provide access at their ends or sides to facilitate working with cranes or hoists.|For SI: 1 foot = 304.8 mm, 1 gallon = 3.785 L.
a.
Minimum distance for underground LP-gas containers shall be measured from the pressure relief device and the filling or liquid-level gauge vent connection at the container,
except that all parts of an underground LP-gas container shall be not less than 10 feet from a building or lot line of adjoining property that can be built on.
b.
For other than installations in which the overhanging structure is 50 feet or more above the relief-valve discharge outlet. In applying the distance between buildings and ASME
LP-gas containers with a water capacity of 125 gallons or more, not less than 50 percent of this horizontal distance shall also apply to all portions of the building that project more
than 5 feet from the building wall and that are higher than the relief valve discharge outlet. This horizontal distance shall be measured from a point determined by projecting the
outside edge of such overhanging structure vertically downward to grade or other level on which the LP-gas container is installed. Distances to the building wall shall be not less
than those prescribed in this table.
c.
Where underground multicontainer installations are composed of individual LP-gas containers having a water capacity of 125 gallons or more, such containers shall be
installed so as to provide access at their ends or sides to facilitate working with cranes or hoists.| |||||||

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LIQUEFIED PETROLEUM GASES

6104.3.1 Installation on roof prohibited. LP-gas containers used in stationary installations shall not be located on the roofs of buildings.

6104.3.2 Special hazards. LP-gas containers shall be located with respect to special hazards including, but not limited to, aboveground flammable or combustible liquid tanks, oxygen or gaseous hydrogen containers, flooding or electric power lines as specified in Section 6.5.3 of NFPA 58.

**6104.4 Multiple LP-gas container installations.
CRC § 61-4 Medium relevance — show source text
b.
For other than installations in which the overhanging structure is 50 feet or more above the relief-valve discharge outlet. In applying the distance between buildings and ASME
LP-gas containers with a water capacity of 125 gallons or more, not less than 50 percent of this horizontal distance shall also apply to all portions of the building that project more
than 5 feet from the building wall and that are higher than the relief valve discharge outlet. This horizontal distance shall be measured from a point determined by projecting the
outside edge of such overhanging structure vertically downward to grade or other level on which the LP-gas container is installed. Distances to the building wall shall be not less
than those prescribed in this table.
c.
Where underground multicontainer installations are composed of individual LP-gas containers having a water capacity of 125 gallons or more, such containers shall be
installed so as to provide access at their ends or sides to facilitate working with cranes or hoists.| |||||||

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LIQUEFIED PETROLEUM GASES

6104.3.1 Installation on roof prohibited. LP-gas containers used in stationary installations shall not be located on the roofs of buildings.

6104.3.2 Special hazards. LP-gas containers shall be located with respect to special hazards including, but not limited to, aboveground flammable or combustible liquid tanks, oxygen or gaseous hydrogen containers, flooding or electric power lines as specified in Section 6.5.3 of NFPA 58.

6104.4 Multiple LP-gas container installations. Multiple LP-gas container installations with a total water storage capacity of more than 180,000 gallons (681.3 kL) [150,000-gallon (567.8 kL) LP-gas capacity] shall be subdivided into groups containing not more than 180,000 gallons (681.3 kL) in each group. Such groups shall be separated by a distance of not less than 50 feet (15 240 mm), unless the containers are protected in accordance with one of the following:
1. Mounded in an approved manner.
2. Protected with approved insulation on areas that are subject to impingement of ignited gas from pipelines or other leakage.
3. Protected by fire walls of approved construction.
4. Protected by an approved system for application of water as specified in Table 6.5.1.2 of NFPA 58.
5. Protected by other approved means.
Where one of these forms of protection is provided, the separation shall be not less than 25 feet (7620 mm) between LP-gas container groups.

SECTION 6105—PROHIBITED USE OF LP-GAS

6105.1 Nonapproved equipment. LP-gas shall not be used for the purpose of operating devices or equipment unless such device or equipment is approved for use with LP-gas.

6105.2 Release to the atmosphere. LP-gas shall not be released to the atmosphere, except in accordance with Section 7.3 of NFPA 58.

SECTION 6106—DISPENSING AND OVERFILLING

6106.1 Attendants. Dispensing of LP-gas shall be performed by a qualified attendant.

CRC § 6104.3 Medium relevance — show source text

Exception: In particular installations, this capacity limit shall be determined by the fire code official, after consideration of special features such as topographical conditions, nature of occupancy, and proximity to buildings, capacity of proposed LP-gas containers, degree of fire protection to be provided and capabilities of the local fire department.

6104.3 Container location. LP-gas containers shall be located with respect to buildings and lot lines of adjoining property that can be built on, in accordance with Table 6104.3.

TABLE 6104.3—LOCATION OF LP-GAS CONTAINERS	Col2	Col3	Col4	Col5	Col6
LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND BUILDINGS, PUBLIC WAYSg OR LOT LINES OF ADJOINING PROPERTY THAT CAN BE BUILT ON	MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND BUILDINGS, PUBLIC WAYSg OR LOT LINES OF ADJOINING PROPERTY THAT CAN BE BUILT ON	MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERSb, c (feet)
LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	Mounded or underground LP-gas containersa(feet)	Above-ground LP-gas containersb(feet)	Above-ground LP-gas containersb(feet)
Less than 125c, d	Less than 125c, d	Less than 125c, d	10	5e	None
125 to 250	125 to 250	125 to 250	10	10	None
251 to 500	251 to 500	251 to 500	10	10	3
501 to 2,000	501 to 2,000	501 to 2,000	10	25e, f	3
2,001 to 30,000	2,001 to 30,000	2,001 to 30,000	50	50	5
30,001 to 70,000	30,001 to 70,000	30,001 to 70,000	50	75	(0.25 of sum of diameters of adja- cent LP-gas containers)
70,001 to 90,000	70,001 to 90,000	70,001 to 90,000	50	100	100
90,001 to 120,000	90,001 to 120,000	90,001 to 120,000	50	125	125
For SI: 1 foot = 304.8 mm, 1 gallon = 3.785 L. a. Minimum distance for underground LP-gas containers shall be measured from the pressure relief device and the filling or liquid-level gauge vent connection at the container,

CRC § 1308.8 Medium relevance — show source text
have a flow capacity such that the pressure in the protected system is maintained at or below the limits specified in Section 1308.8 under the following conditions:

(1) The line pressure regulator for which the relief valve is providing overpressure protection has failed wide

open.

(2) The gas pressure at the inlet of the line pressure regulator for which the relief valve is providing overpressure protection is not less than the regulator’s normal operating inlet pressure. [NFPA 54:5.8.2.5]

1308.9 Overpressure Protection Devices. Overpressure protection devices shall be one of the following:

(1) Pressure relief valve.

(2) Monitor regulator.

(3) Series regulator installed upstream from the line regulator and set to continuously limit the pressure on the inlet of the line regulator to the maximum values specified by Section 1308.8 or less.

(4) Automatic shutoff device installed in series with the line pressure regulator and set to shut off when the pressure on the downstream piping system reaches the maximum values specified by Section 1308.8 or less. This device shall be designed so that it will remain closed until manually reset. [NFPA 54:5.8.3.1]

1308.9.1 Separate Devices. The devices in Section 1308.9 shall be installed either as an integral part of the service or line pressure regulator or as separate units. Where separate overpressure protection devices are installed, they shall comply with Section 1308.9.2 through Section 1308.9.7. [NFPA 54:5.8.3.2]

1308.9.2 Construction and Installation. All overpressure protection devices shall meet the following requirements:

(1) Be constructed of materials so that the operation of the device is not impaired by corrosion of external parts by the atmosphere or of internal parts by the gas.

(2) Be designed and installed so they can be operated to determine whether the valve is free. The devices shall also be designed and installed so they can be tested to determine the pressure at which they operate and be examined for leakage when in the closed position. [NFPA 54:5.8.4]

1308.9.3 External Control Piping. External control piping shall be designed and installed so that damage to the control piping of one device does not render both the regulator and the overpressure protective device inoperative. [NFPA 54:5.8.5]

1308.9.4 Setting. Each pressure limiting or pressure relieving device shall be set so that the gas pressure supplied to the connected appliance(s) does not exceed the limits specified in Section 1308.8 and Section 1308.8.1.

[NFPA 54:5.8.6]

1308.9.5 Unauthorized Operation. Where unauthorized operation of any shutoff valve could render a pres

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2025 CALIFORNIA MECHANICAL CODE 281

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

FUEL GAS PIPING

TABLE 1308.12

MANUAL GAS VALVE STANDARDS

[NFPA 54: TABLE 5.11]
CRC § 1.1.1.1 Medium relevance — show source text
[NFPA 54:1.1.1.1(A)]

1302.2 Piping System Requirements. Requirements for piping systems shall include design, materials, components, fabrication, assembly, installation, testing, inspection, operation, and maintenance. [NFPA 54:1.1.1.1(E)]

1302.3 Applications. This chapter shall not apply to the following items:

(1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system.

(2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural

purposes.

(3) Raw material (feedstock) applications except for piping to special atmosphere generators.

(4) Oxygen-fuel gas cutting and welding systems.

(5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.

(6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.

(7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.

(8) LP-Gas installations at utility gas plants.

(9) Liquefied natural gas (LNG) installations.

(10)Fuel gas piping in electric utility power plants.

(11)Proprietary items of equipment, apparatus, or instruments such as gas-generating sets, compressors, and calorime ters.

(12)LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.

(13)LP-Gas piping for buildings under construction or renovations that is not to become part of the permanent building piping system—that is, temporary fixed piping for building heat.

(14)Installation of LP-Gas systems for railroad switch heating.

(15)Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles.

(16)Gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in distribution of gas, other than undiluted LP-Gas.

(17)Building design and construction, except as specified herein.

(18)Fuel gas systems on recreational vehicles manufactured in accordance with NFPA 1192.

(19)Fuel gas systems using hydrogen as a fuel.

(20)Construction of appliances. {NFPA 54:1.1.1.2}

1303.0 Inspection. 1303.1 Inspection Notification. Upon completion of the installation, alteration, or repair of gas piping, and prior to the use thereof, the Authority Having Jurisdiction shall be notified that such gas piping is ready for inspection. 1303.2 Excavation. Excavations required for the installation of underground piping shall be kept open until such time as the piping has been inspected and approved. Where such piping is covered or concealed before such approval, it shall be exposed upon the direction of the Authority Having Jurisdiction.

1303.3 Type of Inspections. The Authority Having Jurisdiction shall make the following inspections and either shall approve that portion of the work as completed or shall notify the permit holder wherein the same fails to be in accordance with this code.

1303.3.1 Rough Piping Inspection. This inspection shall be made after gas piping authorized by the permit has been installed before such piping has been covered or concealed, or before fixture or appliance has been attached thereto.
CRC § 2307.2.1 Medium relevance — show source text
2307.2.1 Approved equipment. Containers, pressure relief devices (including pressure relief valves), pressure regulators and piping for LP-gas shall be approved.

2307.2.2 Listed equipment. Hoses, hose connections, vehicle fuel connections, dispensers, LP-gas pumps and electrical equipment used for LP-gas shall be listed.

2307.3 Attendants. Motor fuel-dispensing operations for LP-gas shall be conducted by qualified attendants or in accordance with Section 2307.7 by persons trained in the proper handling of LP-gas.

2307.4 Location of dispensing operations and equipment. The point of transfer for LP-gas dispensing operations shall be separated from buildings and other exposures in accordance with the following:
1. Not less than 25 feet (7620 mm) from buildings where the exterior wall is not part of a fire-resistance-rated assembly having a rating of 1 hour or greater.
2. Not less than 25 feet (7620 mm) from combustible overhangs on buildings, measured from a vertical line dropped from the face of the overhang at a point nearest the point of transfer.
3. Not less than 25 feet (7620 mm) from the lot line of property that can be built on.
4. Not less than 25 feet (7620 mm) from the centerline of the nearest mainline railroad track.
5. Not less than 10 feet (3048 mm) from public streets, highways, thoroughfares, sidewalks and driveways.
6. Not less than 10 feet (3048 mm) from buildings where the exterior wall is part of a fire-resistance-rated assembly having a rating of 1 hour or greater.
Exception: The point of transfer for LP-gas dispensing operations need not be separated from canopies that are constructed in accordance with the California Building Code and that provide weather protection for the dispensing equipment.

LP-gas containers shall be located in accordance with Chapter 61. LP-gas storage and dispensing equipment shall be located outdoors.

2307.5 Additional requirements for LP-gas dispensers and equipment. LP-gas dispensers and related equipment shall comply with the following provisions:
1. Pumps shall be fixed in place and shall be designed to allow control of the flow and to prevent leakage and accidental discharge.
2. Dispensing devices installed within 10 feet (3048 mm) of where vehicle traffic occurs shall be protected against physical damage by mounting on a concrete island 6 inches (152 mm) or more in height, or shall be protected in accordance with Section 312.
3. Dispensing devices shall be securely fastened to their mounting surface in accordance with the dispenser manufacturer’s instructions.
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MOTOR FUEL-DISPENSING FACILITIES AND REPAIR GARAGES

2307.6 Installation of LP-gas dispensing devices and equipment. The installation and operation of LP-gas dispensing systems shall be in accordance with Sections 2307.6.1 through 2307.6.4 and Chapter 61. LP-gas dispensers and dispensing stations shall be installed in accordance with the manufacturer’s specifications and their listing.

2307.6.1 Product control valves. The dispenser system piping shall be protected from uncontrolled discharge in accordance with the following: 1.
CRC § 2307.5 Medium relevance — show source text
Exception: The point of transfer for LP-gas dispensing operations need not be separated from canopies that are constructed in accordance with the California Building Code and that provide weather protection for the dispensing equipment.

LP-gas containers shall be located in accordance with Chapter 61. LP-gas storage and dispensing equipment shall be located outdoors.

2307.5 Additional requirements for LP-gas dispensers and equipment. LP-gas dispensers and related equipment shall comply with the following provisions:
1. Pumps shall be fixed in place and shall be designed to allow control of the flow and to prevent leakage and accidental discharge.
2. Dispensing devices installed within 10 feet (3048 mm) of where vehicle traffic occurs shall be protected against physical damage by mounting on a concrete island 6 inches (152 mm) or more in height, or shall be protected in accordance with Section 312.
3. Dispensing devices shall be securely fastened to their mounting surface in accordance with the dispenser manufacturer’s instructions.
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MOTOR FUEL-DISPENSING FACILITIES AND REPAIR GARAGES

2307.6 Installation of LP-gas dispensing devices and equipment. The installation and operation of LP-gas dispensing systems shall be in accordance with Sections 2307.6.1 through 2307.6.4 and Chapter 61. LP-gas dispensers and dispensing stations shall be installed in accordance with the manufacturer’s specifications and their listing.

2307.6.1 Product control valves. The dispenser system piping shall be protected from uncontrolled discharge in accordance with the following:
1. Where mounted on a concrete base, a means shall be provided and installed within [1] / 2 inch (12.7 mm) of the top of the concrete base that will prevent flow from the supply piping in the event that the dispenser is displaced from its mounting.
2. A manual shutoff valve and an excess flow-control check valve shall be located in the liquid line between the pump and the dispenser inlet where the dispensing device is installed at a remote location and is not part of a complete storage and dispensing unit mounted on a common base.
3. An excess flow-control check valve or an emergency shutoff valve shall be installed in or on the dispenser at the point at which the dispenser hose is connected to the liquid piping.
4. A listed automatic-closing type hose nozzle valve with or without a latch-open device shall be provided on island-type dispensers.
2307.6.2 Hoses. Hoses and piping for the dispensing of LP-gas shall be provided with hydrostatic relief valves. The hose length shall not exceed 18 feet (5486 mm). An approved method shall be provided to protect the hose against mechanical damage.

2307.6.3 Emergency breakaway devices. Dispenser hoses shall be equipped with a listed emergency breakaway device designed to retain liquid on both sides of the breakaway point. Where hoses are attached to hose-retrieving mechanisms, the emergency breakaway device shall be located such that the breakaway device activates to protect the dispenser from being displaced.

2307.6.4 Vehicle impact protection. Where installed within 10 feet of vehicle traffic, LP-gas storage containers, pumps and dispensers shall be protected in accordance with Section 2307.5, Item 2.
CRC § 2307.7 Medium relevance — show source text
2307.7 Public fueling of motor vehicles. Self-service LP-gas dispensing systems, including key, code and card lock dispensing systems, shall be limited to the filling of permanently mounted containers providing fuel to the LP-gas powered vehicle.

The requirements for self-service LP-gas dispensing systems shall be in accordance with the following:
1. The arrangement and operation of the transfer of product into a vehicle shall be in accordance with this section and Chapter 61.
2. The system shall be provided with an emergency shutoff switch located within 100 feet (30 480 mm) of, but not less than 20 feet (6096 mm) from, dispensers.
3. The owner of the LP-gas motor fuel-dispensing facility or the owner’s designee shall provide for the safe operation of the system and the training of users.
4. The dispenser and hose-end valve shall release not more than [1] / 8 fluid ounce (4 cc) of liquid to the atmosphere upon breaking the connection with the fill valve on the vehicle.
5. Portable fire extinguishers shall be provided in accordance with Section 2305.5.
6. Warning signs shall be provided in accordance with Section 2305.6.
7. The area around the dispenser shall be maintained in accordance with Section 2305.7.
2307.8 Overfilling. LP-gas containers shall not be filled with LP-gas in excess of the volume determined using the fixed maximum liquid level gauge installed on the container, the volume determined by the overfilling prevention device installed on the container or the weight determined by the required percentage of the water capacity marked on the container.

SECTION 2308—COMPRESSED NATURAL GAS MOTOR FUEL-DISPENSING FACILITIES

2308.1 General. Motor fuel-dispensing facilities for compressed natural gas (CNG) fuel shall be in accordance with this section, Chapter 53 and Section 413 of the International Fuel Gas Code .

2308.2 Approvals. Storage vessels and equipment used for the storage, compression or dispensing of CNG shall be approved or listed in accordance with Sections 2308.2.1 through 2308.2.4.

2308.2.1 Approved equipment. Containers, compressors, pressure relief devices (including pressure relief valves), and pressure regulators and piping used for CNG shall be approved.

2308.2.2 Listed equipment. Hoses, hose connections, dispensers and electrical equipment used for CNG shall be listed. Vehiclefueling connections shall be listed and labeled.

2308.2.3 Residential fueling appliance (RFA). Residential fueling appliances shall be listed and installed in accordance with the installation requirements of CSA/ANSI NGV 5.1, manufacturer’s installation instructions and Section 413 of the International Fuel Gas Code . The capacity of an RFA shall not exceed 5 cubic feet per minute (0.14 m [3] /min) of natural gas.

2308.2.4 Vehicle fueling appliance (VFA). Nonresidential fueling appliances shall be listed and installed in accordance with the installation requirements of CSA/ANSI NGV 5.2, manufacturer’s installation instructions and the requirements of Section 413 of the International Fuel Gas Code for VFAs. The capacity of the VFA shall not exceed 10 cubic feet per minute (0.28 m [3] /min) of natural

gas.

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CRC § 5.1 Medium relevance — show source text

N107.5.1 LP-gas containers exceeding 12 pounds (5 kg) of water capacity. The use of LP-gas containers exceeding 12 pounds (5 kg) of water capacity shall be prohibited.

N107.5.2 Where more than one LP-gas container is present in the same area. Where more than one LP-gas container is present in the same area, cylinders shall be separated from each other by a minimum of 20 feet (6096 mm).

N107.5.3 Equipment for LP-gas containers. Equipment for LP-gas containers, including tanks, piping, hoses, fittings, valves, tubing and other related components, shall be approved and shall comply with Chapter 61 and with the applicable requirements of the International Fuel Gas Code .

N107.5.4 Securing of LP-gas containers. Portable LP-gas containers shall be securely fastened in place to prevent unauthorized

movement.

N107.5.5 Spare LP-gas containers. Spare LP-gas containers not connected to an approved appliance shall be stored in a location and manner approved by the fire code official.

N107.6 Cooking and open-flame devices. All cooking equipment and any open-flame devices shall comply with the requirements of Section 308 of this code and with Chapter 5 of the California Mechanical Code . Cooking equipment shall be separated from combustible material display or storage by a horizontal distance of not less than 5 feet (1524 mm).

SECTION N108—MEANS OF EGRESS

N108.1 Means of egress from the indoor trade show or exhibition area. Means of egress from the indoor trade show or exhibition area shall comply with Chapter 10 and with Sections N108.2 and N108.3.

N108.2 Design of means of egress. The design of means of egress shall take into consideration the exhibit layout and the anticipated crowd movement during the event.

N108.3 Aisles and corridors. Aisles and corridors within the exhibit area shall be kept free of obstructions when the public is present. Storage of any kind in aisles or corridors within the exhibit area is not permitted.

SECTION N109—REFERENCED STANDARDS

N109.1 General. See Table N109.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, standard title, and the section or sections of this appendix that reference the standard.

TABLE N109.1—REFERENCED STANDARDS	Col2	Col3
STANDARD ACRONYM	STANDARD NAME	SECTIONS HEREIN REFERENCED
CBC—25	California Building Code	N105.2
IFGC—24	International Fuel Gas Code	N107.5.3
CMC—25	California Mechanical Code	N107.6

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APPENDIX N-6 2025 CALIFORNIA FIRE CODE

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CALIFORNIA FIRE CODE – MATRIX ADOPTION TABLE

APPENDIX O – VALET TRASH AND RECYCLING COLLECTION IN GROUP R-2 OCCUPANCIES

CRC § 3.2.4 Medium relevance — show source text
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

APPENDIX N—INDOOR TRADE SHOWS AND EXHIBITIONS

N107.3.2.4 Vehicle fuel tank openings. Vehicle fuel tank openings shall be locked and sealed to prevent the escape of vapors.

N107.3.3 Obstruction by vehicles. Vehicles shall not be located in such a manner that they obstruct a means of egress.

N107.3.4 Gas-powered vehicles. Compressed natural gas (CNG), liquefied petroleum gas (LPG) or hydrogen-powered vehicles present in indoor trade shows and exhibition areas shall comply with Sections N107.3.4.1 through N107.3.4.3.

N107.3.4.1 Shutoff valves. Shutoff valves shall be closed and the engine shall be operated until it stops. Valves shall remain closed until the vehicle is removed.

N107.3.4.2 Battery hot lead. The hot lead of the battery shall be disconnected.

N107.3.4.3 Dual-fuel vehicles equipped to operate on gasoline. Dual-fuel vehicles equipped to operate on gasoline as well as on CNG, LPG or hydrogen shall comply with Section 3108.14.

N107.3.5 Competitions or demonstrations. Competitions or demonstrations using any type of vehicle shall comply with Section 3108.14.5.

N107.4 Fueled equipment other than vehicles. Fueled equipment other than vehicles shall comply with Section 313.

N107.5 LP-gas containers. Liquefied petroleum (LP) gas containers shall comply with Sections N107.5.1 through N107.5.5 and Chapter 61.

N107.5.1 LP-gas containers exceeding 12 pounds (5 kg) of water capacity. The use of LP-gas containers exceeding 12 pounds (5 kg) of water capacity shall be prohibited.

N107.5.2 Where more than one LP-gas container is present in the same area. Where more than one LP-gas container is present in the same area, cylinders shall be separated from each other by a minimum of 20 feet (6096 mm).

N107.5.3 Equipment for LP-gas containers. Equipment for LP-gas containers, including tanks, piping, hoses, fittings, valves, tubing and other related components, shall be approved and shall comply with Chapter 61 and with the applicable requirements of the International Fuel Gas Code .

N107.5.4 Securing of LP-gas containers. Portable LP-gas containers shall be securely fastened in place to prevent unauthorized

movement.

N107.5.5 Spare LP-gas containers. Spare LP-gas containers not connected to an approved appliance shall be stored in a location and manner approved by the fire code official.

N107.6 Cooking and open-flame devices. All cooking equipment and any open-flame devices shall comply with the requirements of Section 308 of this code and with Chapter 5 of the California Mechanical Code . Cooking equipment shall be separated from combustible material display or storage by a horizontal distance of not less than 5 feet (1524 mm).

SECTION N108—MEANS OF EGRESS

N108.1 Means of egress from the indoor trade show or exhibition area. Means of egress from the indoor trade show or exhibition area shall comply with Chapter 10 and with Sections N108.2 and N108.3.

CRC § 6103.2.1.5 Medium relevance — show source text

6103.2.1.5 Demonstration uses. Portable LP-gas containers are allowed to be used temporarily for demonstrations and public exhibitions. Such containers shall not exceed a water capacity of 12 pounds (5 kg). Where more than one such container is present in the same room, each container shall be separated from other containers by a distance of not less than 20 feet (6096 mm).

6103.2.1.6 Use with self-contained torch assemblies. Portable LP-gas containers are allowed to be used to supply approved self-contained torch assemblies or similar appliances. Such containers shall not exceed a water capacity of 2.7 pounds (1.2 kg).

6103.2.1.7 Use for food preparation. Where approved, listed LP-gas commercial food service appliances are allowed to be used for food-preparation within restaurants and in attended commercial food-catering operations in accordance with the International Fuel Gas Code, the California Mechanical Code and NFPA 58.

6103.2.2 Industrial vehicles and floor maintenance machines. LP-gas containers on industrial vehicles and floor maintenance machines shall comply with Sections 11.11 and 11.12 of NFPA 58.

6103.3 Location of equipment and piping. Equipment and piping shall not be installed in locations where such equipment and piping is prohibited by the International Fuel Gas Code .

SECTION 6104—LOCATION OF LP-GAS CONTAINERS

6104.1 General. The storage and handling of LP-gas and the installation and maintenance of related equipment shall comply with NFPA 58 and be subject to the approval of the fire code official, except as provided in this chapter.

6104.2 Maximum capacity within established limits. For the protection of heavily populated or congested areas, storage of liquified petroleum gas shall not exceed an aggregate capacity in any one installation of 2,000 gallons (7570 L) within the limits established by law as set forth in the fire code adoption ordinance or other regulation adopted by the jurisdiction.

6104.3 Container location. LP-gas containers shall be located with respect to buildings and lot lines of adjoining property that can be built on, in accordance with Table 6104.3.

TABLE 6104.3—LOCATION OF LP-GAS CONTAINERS	Col2	Col3	Col4	Col5	Col6
LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	LP-GAS CONTAINER CAPACITY (water gallons)	MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND BUILDINGS, PUBLIC WAYSg OR LOT LINES OF ADJOINING PROPERTY THAT CAN BE BUILT ON	MINIMUM SEPARATION BETWEEN LP-GAS CONTAINERS AND BUILDINGS, PUBLIC WAYSg OR LOT LINES OF ADJOINING PROPERTY THAT CAN BE BUILT ON	MINIMUM SEPARATION BETWEEN **LP-GAS CONTAINERSb,

CRC § 12-0 Medium relevance — show source text
000|DR|DR|12-0|15-3|10-11|15-0|10-2|14-8| |8|2-#4
1-#6|60,000|DR|DR|DR|DR|12-2|15-3|11-7|15-3| |8|2-#5|40,000|DR|DR|DR|DR|12-7|16-7|11-9|16-7| |8|2-#5|60,000|DR|DR|DR|DR|DR|DR|13-3|16-7| |8|2-#6|40,000|DR|DR|DR|DR|DR|DR|13-2|17-8| |8|2-#6|60,000|DR|DR|DR|DR|DR|DR|DR|DR| |12|1-#4|40,000|11-5|9-10|10-6|12-0|9-6|11-6|8-9|11-1| |12|1-#4|60,000|11-5|9-10|11-8|13-3|10-11|14-0|10-1|13-6| |12|1-#5|40,000|11-5|9-10|11-8|13-3|11-1|14-4|10-3|13-9| |12|1-#5|60,000|11-5|9-10|11-8|13-3|11-10|16-0|11-9|16-9| |12|2-#4
1-#6|40,000|DR|DR|11-8|13-3|11-10|16-0|11-2|15-6| |12|2-#4
1-#6|60,000|DR|DR|11-8|13-3|11-10|16-0|11-11|18-4| |12|2-#5|40,000|DR|DR|11-8|13-3|11-10|16-0|11-11|18-4| |12|2-#5|60,000|DR|DR|11-8|13-3|11-10|16-0|11-11|18-4| |16|1-#4|40,000|13-6|13-0|11-10|13-8|10-7|12-11|9-11|12-4| |16|1-#4|60,000|13-6|13-0|13-8|16-7|12-4|15-9|11-5|15-0| |16|1-#5|40,000|13-6|13-0|13-10|17-0|12-6|16-1|11-7|15-4| |16|1-#5|60,000|13-6|13-0|13-10|17-1|14-0|19-7|13-4|18-8| |16|2-#4
1-#6|40,000|13-6|13-0|13-10|17-1|13-8|18-2|12-8|17-4| |16|2-#4
1-#6|60,

CRC § 1.5 Medium relevance — show source text

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	5	5	5	5	5	5	5	5
Adopt entire chapter
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below	X		X	X
Chapter / Section
R109.1.5			X	X
R109.1.5.1			X	X
R109.1.5.2				X
R109.1.5.3				X
R109.1.6			X	X
R109.1.6.1				X
R109.1.6.2				X
R109.2 - R109.4			X
R110 - R110.4			X
R111 - R111.3			X
R113.1 - R113.2			X
R114.1 - R114.4			X

The state agency does not adopt sections identified with the following symbol: †

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PART I—ADMINISTRATIVE

1 ADMINISTRATION

DIVISION I CALIFORNIA ADMINISTRATION

SECTION 1.1—GENERAL

1.1.1 Title. These regulations shall be known as the California Residential Code, may be cited as such and will be referred to herein as “this code.” The California Residential Code is Part 2.5 of thirteen parts of the official compilation and publication of the adoption, amendment and repeal of building regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 International Residential Code of the International Code Council with necessary California amendments.

CRC § 1.5.2 Medium relevance — show source text
1.5.2_||||X|||||||||||||||||||| |R109.1.5.3||||X|||||||||||||||||||| |R109.1.6|||X|X|||||||||||||||||||| |R109.1.6.1||||X|||||||||||||||||||| |R109.1.6.2||||X|||||||||||||||||||| |R109.2 - R109.4|||X||||||||||||||||||||| |R110 - R110.4|||X||||||||||||||||||||| |R111 - R111.3|||X||||||||||||||||||||| |R113.1 - R113.2|||X||||||||||||||||||||| |R114.1 - R114.4|||X|||||||||||||||||||||

The state agency does not adopt sections identified with the following symbol: †

1-2 2025 CALIFORNIA RESIDENTIAL CODE

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

PART I—ADMINISTRATIVE

1 ADMINISTRATION

DIVISION I CALIFORNIA ADMINISTRATION

SECTION 1.1—GENERAL

1.1.1 Title. These regulations shall be known as the California Residential Code, may be cited as such and will be referred to herein as “this code.” The California Residential Code is Part 2.5 of thirteen parts of the official compilation and publication of the adoption, amendment and repeal of building regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 International Residential Code of the International Code Council with necessary California amendments.

1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation and energy conservation; safety to life and property from fire and other hazards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replacement, repair, equip- ment, use and occupancy, location, maintenance, removal and demolition of every detached one- and two-family dwelling and townhouse not more than three stories above grade plane in height with a separate means of egress and structures accessory thereto throughout the State of California.

Exceptions: 1. Live/work units complying with the requirements of Section 508.5 of the California Building Code shall be permitted to be constructed as one- and two-family dwellings or townhouses in accordance with this code, as applicable. Fire suppression required by Section 508.5.7 of the California Building Code when constructed under the California Residential Code for one- and two-family dwellings shall conform to Section 903.3.1.3 of the California Building Code. 2. Owner-occupied lodging houses with five or fewer guestrooms shall be permitted to be constructed in accordance with the California Residential Code for one- and two-family dwellings when equipped with a fire sprinkler system in accordance with Section R309.

1.1.3.1 Classification. Structures or portions of structures shall be classified with respect to occupancy in one or more of the groups _listed in Chapter 3 of the California Building Code.

CRC § 24-1 Medium relevance — show source text

(Note: Part VI is not adopted. See California Mechanical Code and California Plumbing Code, Title 24, Parts 4 and 5.)

2025 CALIFORNIA RESIDENTIAL CODE 24-1

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Part VII—Plumbing

(Note: Part VII is not adopted. See California Plumbing Code, Title 24, Part 5.)

2025 CALIFORNIA RESIDENTIAL CODE 25-1

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Part VIII—Electrical

(Note: Part VIII is not adopted. See California Electrical Code, Title 24, Part 3.)

2025 CALIFORNIA RESIDENTIAL CODE 34-1

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CALIFORNIA RESIDENTIAL CODE – MATRIX ADOPTION TABLE

CHAPTER 44 – REFERENCED STANDARDS

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	5	5	5	5	5	5	5	5
Adopt entire chapter
Adopt entire chapter as amended (amended sections listed below)			X	X
Adopt only those sections that are listed below
Chapter / Section
AAMA				X
ACCA				X
ANSI			X	X
ASME				X
ASTM			X	X
ASTM

CRC § 214.0 Medium relevance — show source text
Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0

Disposal of liquid waste . . . . . . . . . . . . . . . . . . . . .303.1 Water supply and flushing . . . . . . . . . . . . . . . . . . .601.2 LIQUEFIED PETROLEUM

GAS (LP-GAS) . . . . . . . . . . . . . . . 214.0, 1202.1, 1208.4.1,

1208.5.6.3, 1208.5.10.4,

1212.11, E 401.2,

E 403.1, E 403.10

LIQUID WASTES . . . . . . . . . . . . . . . . .214.0, 303.0, L 302.0

LISTED . . . . . . . . . . . . . . . . . . . . . . . .214.0, 301.2, 402.6.2,

501.1

LISTING AGENCY . . . . . . . . . . . . . . . . . . . . . . .214.0, 301.2

LOCATION OF

Backwater valves . . . . . . . . .710.1, 710.3, 710.4, 710.6,

1006.0, 1101.6.4, 1503.2.3,

1503.9.1, 1503.9.7

Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . .308.0, 402.0

Fuel gas meters . . . . . . . . . . . . . . . . .1208.7 – 1208.7.3,

E 402.4 – E 402.4.2

Fuel gas valves . . . . . . . . . . . . . . . . .1210.9 – 1210.9.4, 1212.5.3, 1212.6, E 402.3

Interceptors and separators . . . . . . . . . . . .1009.3, 1009.5 Medical gas and medical vacuum system valves . . . . . . . . . . . .1314.0 Plumbing system or sewer on lot . . . . . . . .307.0, 721.1,

Table 721.1

Private sewage disposal system . . . . . . . . . . . . .H 101.8 Water heaters . . . . . . . . . .504.1, 504.3 – 504.6, 506.3,

507.2, 507.5, 507.10,

507.12 – 507.15, 507.24,

507.25, 507.26

LOT, DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214.0

LOW HAZARD . . . . . . . . . . . . . . . . . . . . .214.0, Table 603.2
CRC § 4.5 Medium relevance — show source text
5|DR| |110|—|50|4.5|4.5|4.5|4.5|4.5|6.5|4.5|4.5|DR|4.5|DR|DR|DR|DR|DR| |110|—|70|4.5|4.5|6.5|4.5|4.5|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR| |115|—|20|4.5|4.5|4.5|4.5|4.5|6.5|4.5|4.5|DR|4.5|4.5|DR|4.5|DR|DR| |115|—|30|4.5|4.5|4.5|4.5|4.5|6.5|4.5|4.5|DR|4.5|6.5|DR|4.5|DR|DR| |115|—|50|4.5|4.5|6.5|4.5|4.5|DR|4.5|DR|DR|4.5|DR|DR|DR|DR|DR| |115|—|70|4.5|4.5|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR| |120|—|20|4.5|4.5|6.5|4.5|4.5|DR|4.5|4.5|DR|4.5|DR|DR|4.5|DR|DR| |120|—|30|4.5|4.5|DR|4.5|4.5|DR|4.5|6.5|DR|4.5|DR|DR|DR|DR|DR| |120|—|50|4.5|4.5|DR|4.5|DR|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR| |120|—|70|4.5|DR|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR| |130|110|20|4.5|6.5|DR|4.5|DR|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR| |130|110|30|4.5|DR|DR|4.5|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR| |130|110|50|4.5|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR| |130|110|70|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR|DR| |For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 mile per hour = 0.447 m/s.
DR = Design Required.
a.
CRC § 8-0 Medium relevance — show source text
000|8-0|8-10|6-9|7-0|6-3|5-11|5-5|4-7|4-5| |16i|1-#5|40,000|8-2|9-0|6-11|7-2|6-5|6-0|5-7|4-8|4-6| |16i|1-#5|60,000|11-5|12-6|9-3|9-9|8-4|7-7|6-10|5-6|5-4| |16i|2-#4
1-#6|40,000|10-7|11-7|8-11|9-3|8-3|7-7|6-10|5-6|5-4| |16i|2-#4
1-#6|60,000|12-2|14-0|9-3|9-9|8-4|7-7|6-10|5-6|5-4| |16i|2-#5|40,000|12-2|14-2|9-3|9-9|8-4|7-7|6-10|5-6|5-4| |16i|2-#5|60,000|DR|DR|DR|DR|DR|DR|DR|DR|DR| |16i|Center distance_A_m, n|Center distance_A_m, n|1-8|2-0|1-2|1-3|1-0|0-11|0-9|STL|STL| |20i|Span without stirrupsk, l|Span without stirrupsk, l|5-0|5-6|4-6|4-7|4-3|4-1|4-0|3-8|3-8| |20i|1-#4|40,000|7-2|8-2|6-3|6-6|5-10|5-6|5-1|4-3|4-2| |20i|1-#4|60,000|8-11|9-11|7-8|7-11|7-1|6-8|6-2|5-2|5-0| |20i|1-#5|40,000|9-1|10-2|7-9|8-1|7-3|6-10|6-4|5-4|5-2| |20i|1-#5|60,000|12-8|14-2|10-11|11-3|10-2|9-6|8-9|7-1|6-10| |20i|2-#4
1-#6|40,000|10-3|11-5|8-9|9-1|8-2|7-8|7-1|6-0|5-10| |20i|2-#4
1-#6|60,000|14-3|15-11|11-9|12-5|10-8|9-9|8-9|7-1|6-10| |20i|2-#5|40,000|14-6|16-3|11-6|12-1|10-4|9-6|8-6|6-11|6-8| |20i|2-#5|60,
CRC § 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|
CRC § 6-1 Medium relevance — show source text
000|6-1|6-9|5-2|5-4|4-9|3-11|3-9|3-0|2-11| |8|1-#5|60,000|7-4|8-1|6-3|6-5|5-9|4-9|4-6|3-7|3-7| |8|2-#4
1-#6|40,000|6-10|7-6|5-9|6-0|5-5|4-5|4-2|3-4|3-4| |8|2-#4
1-#6|60,000|8-2|9-1|6-11|7-2|6-6|5-4|5-0|4-1|4-0| |8|2-#5|40,000|8-4|9-3|7-1|7-4|6-7|5-5|5-1|4-1|4-0| |8|2-#5|60,000|9-11|11-0|8-5|8-9|7-10|6-6|6-1|4-8|4-6| |8|2-#6|40,000|9-9|10-10|8-3|8-7|7-9|6-4|5-10|4-1|4-0| |8|2-#6|60,000|DR|DR|DR|DR|DR|DR|DR|DR|DR| |8|Center distance_A_k, l|Center distance_A_k, l|2-6|3-1|1-10|1-11|1-7|1-1|0-11|0-7|0-7| |12|Span without stirrupsi, j|Span without stirrupsi, j|5-5|6-7|4-7|4-10|4-3|3-5|3-3|2-8|2-8| |12|1-#4|40,000|5-3|6-0|4-8|4-10|4-4|3-7|3-4|2-9|2-8| |12|1-#4|60,000|6-5|7-4|5-8|5-10|5-3|4-4|4-1|3-4|3-3| |12|1-#5|40,000|6-6|7-6|5-9|6-0|5-5|4-5|4-2|3-5|3-4| |12|1-#5|60,000|7-11|9-1|7-0|7-3|6-7|5-5|5-1|4-2|4-0| |12|2-#4
1-#6|40,000|7-4|8-5|6-6|6-9|6-1|5-0|4-9|3-10|3-9| |12|2-#4
1-#6|60,000|10-3|11-9|9-1|9-5|8-6|7-0|6-7|5-4|5-3| |12|2-#5|40,
CRC § 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,
CRC § 10-13 Medium relevance — show source text
R1006.5 Outlet. The exterior air outlet shall be located in the back or side of the firebox chamber or shall be located outside of the firebox, at the level of the hearth and not greater than 24 inches (610 mm) from the firebox opening. The outlet shall be closable and designed to prevent burning material from dropping into concealed combustible spaces.

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10-14 2025 CALIFORNIA RESIDENTIAL CODE

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Part IV—Energy Conservation

(Note: Part IV is not adopted. See California Energy Code, Title 24, Part 6.)

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11-2 2025 CALIFORNIA RESIDENTIAL CODE

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Part V—Mechanical

(Note: Part V is not adopted. See California Mechanical Code, Title 24, Part 4.)

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12-2 2025 CALIFORNIA RESIDENTIAL CODE

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Part VI—Fuel Gas

(Note: Part VI is not adopted. See California Mechanical Code and California Plumbing Code, Title 24, Parts 4 and 5.)

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24-2 2025 CALIFORNIA RESIDENTIAL CODE

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Part VII—Plumbing

(Note: Part VII is not adopted. See California Plumbing Code, Title 24, Part 5.)

2025 CALIFORNIA RESIDENTIAL CODE 25-1

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25-2 2025 CALIFORNIA RESIDENTIAL CODE

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Part VIII—Electrical

(Note: Part VIII is not adopted. See California Electrical Code, Title 24, Part 3.)

2025 CALIFORNIA RESIDENTIAL CODE 34-1

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34-2 2025 CALIFORNIA RESIDENTIAL CODE

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CALIFORNIA RESIDENTIAL CODE – MATRIX ADOPTION TABLE

CHAPTER 44 – REFERENCED STANDARDS

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

|Adopting
CRC § 1.1 Medium relevance — show source text
CBC—25: California Building Code R101.2, R202, R301.1.1, R301.1.3, R301.2.1.1, R301.2.2.1.1, R301.2.2.1.2, R301.3, Table R302.1(1), Table R302.1(2), R302.2.1, R302.2.2, R302.3, R302.15.4, R322.1, R322.3, R324.5, R403.1.8, Table R602.10.3(3), Table R606.12.2.1, R609.2, R905.10.3

CEBC—25: California Existing Building Code [®]

R110.2, N1109.2

CFC—25: California Fire Code [®]

R102.6, R329.2, N1109.2, M2201.7, G2402.3, G2412.2

CWUIC—25: California Wildland-Urban Interface Code

R102.8, R337, R806.1.1, R907.1.1

ICC 400—2022: Standard on the Design and Construction of Log Structures

R301.1.1, R502.1.4, R602.1.4, R703.1, R802.1.3

ICC 500—2020: ICC/NSSA Standard for the Design and Construction of Storm Shelters

R307.1

ICC 600—2020: 2020 Standard for Residential Construction in High-Wind Regions

R301.2.1.1

ICC 1100—2019: Standard for Spray-applied Polyurethane Foam Plastic Insulation

R303.1.1

IPMC—24: International Property Maintenance Code [®]

R102.6

ISO International Organization for Standardization Chemin de Blandonnet 8 Geneva, Switzerland CP 401 - 1214

8336—2009: Fibre-cement Flat Sheets—Product Specification and Test Methods Table R503.2.1.1(1), Table R503.2.1.1(2), Table R602.3(2), Table R702.4.2, R703.10.1, R703.10.2

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REFERENCED STANDARDS

NFPA National Fire Protection Association 1 Batterymarch Park Quincy, MA 02169-7471

13D— 25 : Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes as amended*

R309.1.1, R309.2.1, R309.3.1, R309.3.1.1, R309.3.2.3, R309.3.6.1, R329.6.2.1

*See California Fire Code for amendments

*NFPA 13D, Amended Sections as follows:

CFC § 2025 Medium relevance — show source text

Any repair, alteration or change of use undertaken within the relocated structure shall comply with the requirements of this code applicable to the work being performed.
Any field fabricated elements shall comply with the applicable requirements of this code.

SECTION BO108—REFERENCED STANDARDS

BO108.1 General. See Table BO108.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, the standard title and the section or sections of this appendix that reference the standard.

TABLE BO108.1—REFERENCED STANDARDS	Col2	Col3
STANDARD ACRONYM	STANDARD NAME	SECTION HEREIN REFERENCED
CEBC—25	California Existing Building Code	BO102.8
CFC—25	California Fire Code	BO107.1
IPMC—24	International Property Maintenance Code®	BO107.1

APPENDIX BO-6 2025 CALIFORNIA RESIDENTIAL CODE

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CA RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CA-1

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APPENDIX CA-2 2025 CALIFORNIA RESIDENTIAL CODE

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CB RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CB-1

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APPENDIX CB-2 2025 CALIFORNIA RESIDENTIAL CODE

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CC RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CC-1

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APPENDIX CC-2 2025 CALIFORNIA RESIDENTIAL CODE

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CD RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CD-1

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APPENDIX CD-2 2025 CALIFORNIA RESIDENTIAL CODE

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CE RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CE-1

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APPENDIX CE-2 2025 CALIFORNIA RESIDENTIAL CODE

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CF RESERVED

2025 CALIFORNIA RESIDENTIAL CODE APPENDIX CF-1

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APPENDIX CF-2 2025 CALIFORNIA RESIDENTIAL CODE

CRC § 1208.3.1 High relevance — show source text
1208.3.1 Maximum Gas Demand. The volumetric flow rate of gas to be provided shall be the sum of the maximum input of the appliances served. The volumetric flow rate of gas to be provided shall be adjusted for altitude where the installation is above 2000 feet (610 m). [NFPA 54:5.3.2.1 – 5.3.2.2] Where the input rating is not indicated, the gas supplier, appliance manufacturer, or a qualified agency shall be contacted, or the rating from Table 1208.3.1 shall be used for estimating the volumetric flow rate of gas to be supplied.

The total connected hourly load shall be used as the basis for piping sizing, assuming all appliances are operating at full capacity simultaneously.

«

«

«

216 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

the inlet connection of all appliances served shall be such that the supply pressure at each appliance inlet is greater than or equal to the minimum pressure required by the appliance. [NFPA 54:5.3.4]

1208.4 Maximum Operating Pressure in Buildings. The maximum operating pressure for any piping systems located inside buildings shall not exceed 5 psi (34 kPa) unless one or more of the following conditions are met:

(1) The piping joints are welded or brazed.

(2) The piping is joined by fittings listed to ANSI LC 4/CSA 6.32 and installed according to the manufacturer’s installation instructions.

(3) The piping joints are flanged and all pipe-to-flange connections are made by welding or brazing.

(4) The piping is located in a ventilated chase or otherwise enclosed for protection against accidental gas accumulation.

(5) The piping is located inside buildings or separate areas of buildings used exclusively for one of the following:

(a) Industrial processing or heating

(b) Research

(c) Warehousing

(d) Boiler or mechanical rooms

(6) The piping is a temporary installation for buildings under construction.

(7) The piping serves appliances or equipment used for agricultural purposes.

(8) The piping system is an LP-Gas piping system with an operating pressure greater than 20 psi (138 kPa) and complies with NFPA 58. [NFPA 54:5.4.4]

1208.4.1 LP-Gas Systems Operating Below -5°F (-21°C). LP-Gas systems designed to operate below 5°F (-21°C) or with butane or a propane-butane mix shall be designed to either accommodate liquid LP-Gas or to prevent LP-Gas vapor from condensing back into a liquid. [NFPA 54:5.4.5]

1208.5 Acceptable Piping Materials and Joining Methods. Materials used for piping systems shall comply with the requirements of Section 1208.5.1 through Section 1208.5.6.3. {NFPA 54:5.5.1.1}

1208.5.1 Used Materials. Pipe, fittings, valves, or other materials shall not be used again unless they are free of foreign materials and have been ascertained to be adequate for the service intended. [NFPA 54:5.5.1.2]

CRC § 5.4.4 Medium relevance — show source text

(3) The piping joints are flanged and all pipe-to-flange connections are made by welding or brazing.

(4) The piping is located in a ventilated chase or otherwise enclosed for protection against accidental gas accumulation.

(5) The piping is located inside buildings or separate areas of buildings used exclusively for one of the following:

(a) Industrial processing or heating

(b) Research

(d) Boiler or mechanical rooms

(6) The piping is a temporary installation for buildings under construction.

(7) The piping serves appliances or equipment used for agricultural purposes.

(8) The piping system is an LP-Gas piping system with an operating pressure greater than 20 psi (138 kPa) and complies with NFPA 58. [NFPA 54:5.4.4]

1208.4.1 LP-Gas Systems Operating Below -5°F (-21°C). LP-Gas systems designed to operate below 5°F (-21°C) or with butane or a propane-butane mix shall be designed to either accommodate liquid LP-Gas or to prevent LP-Gas vapor from condensing back into a liquid. [NFPA 54:5.4.5]

1208.5 Acceptable Piping Materials and Joining Methods. Materials used for piping systems shall comply with the requirements of Section 1208.5.1 through Section 1208.5.6.3. {NFPA 54:5.5.1.1}

1208.5.1 Used Materials. Pipe, fittings, valves, or other materials shall not be used again unless they are free of foreign materials and have been ascertained to be adequate for the service intended. [NFPA 54:5.5.1.2]

1208.5.2 Metallic Pipe. Metallic pipe shall be in accordance with the Section 1208.5.2.1 through Section 1208.5.2.4.

1208.5.2.1 Cast Iron. Cast-iron pipe shall not be used. [NFPA 54:5.5.2.1]

1208.5.2.2 Steel, Stainless Steel, and Wrought- Iron Pipe. Steel, stainless steel, and wrought-iron pipe shall be at least Schedule 40 and shall comply

Exception: Sizing shall be permitted to be based upon established load diversity factors. [NFPA 54:5.3.2.3]

TABLE 1208.3.1

APPROXIMATE GAS INPUT FOR

TYPICAL APPLIANCES

[NFPA 54: TABLE A.5.3.2.1]

APPLIANCE	INPUT (Btu/h approx.)
Space Heating Units Warm air furnace Single family Multifamily, per unit Hydronic boiler Single family Multifamily, per unit	100 000 60 000 100 000 60 000
Space and Water Heating Units Hydronic boiler Single-family Multifamily,

CRC § 1319.0 Medium relevance — show source text
(4) Vacuum receiver.

(5) Piping between the vacuum pump(s), discharge(s), receiver(s), and vacuum source shutoff valve in accordance with Section 1319.0, except brass, galvanized, or black steel pipe, which is permitted to be used as recommended by the manufacturer.

(6) Except as defined in Section 1312.2(1) through Section 1312.2(5), materials and devices used between the medical vacuum exhaust and the medical vacuum source that are permitted to be of any design or construction appropriate for the service as determined by the manufacturer.

(7) Vacuum filtration per Section 1312.4. [NFPA 99:5.1.3.7.1.1]

1312.3 Vacuum Receivers. Receivers for vacuum shall meet the following requirements:

(1) They shall be made of materials deemed suitable by the manufacturer.

(2) They shall comply with Section VIII.1, “Unfired Pressure Vessels,” of the ASME Boiler and Pressure Vessel Code.

(3) They shall be capable of withstanding a gauge pressure of 60 psi (414 kPa) and 30 inch (762 mm) gauge HgV.

(4) They shall be equipped with a manual drain.

(5) They shall be of a capacity based on the technology of the pumps. [NFPA 99:5.1.3.7.3]

1312.4 Vacuum Filtration. Central supply systems for vacuum other than liquid ring pumps shall be provided with inlet filtration with the following characteristics:

(1) Filtration shall be at least duplex to allow one filter to be exchanged without impairing the vacuum system.

(2) Filtration shall be located on the patient side of the vacuum producer.

(3) Filters shall be efficient to 0.3 µ and 99.97 percent HEPA or better, per DOE-STD-3020.

(4) Filtration shall be sized for 100 percent of the peak calculated demand while one filter or filter bundle is iso lated.

(5) It shall be permitted to group multiple filters into bundles to achieve the required capacities.

(6) The system shall be provided with isolation valves on the source side of each filter or filter bundle and isolation valves on the patient side of each filter or filter bundle, permitting the filters to be isolated without shutting off flow to the central supply system.

(7) A means shall be available to allow the user to observe any accumulations of liquids.

2025 CALIFORNIA PLUMBING CODE 281

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

HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

(8) A vacuum relief petcock shall be provided to allow vacuum to be relieved in the filter canister during filter replacement.

(9) Filter elements and canisters shall be permitted to be constructed of materials as deemed suitable by the manufacturer.

(10)In normal operation, one filter or filter bundle shall be isolated from the system to be available for service should a blockage in the operating filter occur or rotation of the filters be desired after filter element exchange.

[NFPA 99:5.1.3.7.4] 1312.5 Piping Arrangement and Redundancies. Piping arrangement shall be as follows:

(1) Piping shall be arranged to allow service and a continuous supply of medical-surgical vacuum in the event of a single fault failure.
CRC § 170.2 Medium relevance — show source text
The rated energy capacity shall be not less than the Minimum Rated Useable Energy Capacity determined by Equation 170.2-E, or by Equation 170.2-F if SARA was used to determine the PV capacity in Section 170.2-D, and the rated power capacity shall be not less than the Minimum Power Capacity determined by Equation 170.2-G. In mixed occupancy buildings, the total battery system capacity for the building shall be determined by applying the Minimum Rated Usable Energy Capacity to each of the listed building types and summing the capacities determined for each.

EQUATION 170.2-E—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY kWh batt = k((CFA × B)/(1000 × C [0.5] ))

— EQUATION 170.2-F BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY, SARA-ADJUSTED kWh batt = k((CFA × B)/(1000 × C [0.5] )) × (kWP Vdc,SARA /kWP Vdc )

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MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES

where:

kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

kW PVdc = Minimum Rated PV System Capacity in kW from Equation 170.2D. kW PVdc, SARA = Minimum Rated PV System Capacity in kW from the SARA calculation. CFA = Conditioned floor area that is subject to the PV system requirements of Section 170.2(g) in square feet.

B = BESS Capacity Factor in Wh/square foot as specified in Table 170.2-V for the building type.

C = Rated single charge-discharge cycle AC to AC (round-trip) efficiency of the BESS.

EQUATION 170.2-G—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED POWER CAPACITY

kW batt = kW batt /4

where:

kW batt = Minimum Rated Power Capacity of the BESS in kW dc .

kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

Exception 1 to Section 170.2(h): No BESS is required if the installed PV system capacity is less than 15 percent of the capacity determined by Equation 170.2-D.

Exception 2 to Section 170.2(h): No BESS is required in buildings with BESS requirements with less than 10 kWh minimum rated usable energy capacity.

|TABLE 170.

CRC § 80-2007 Medium relevance — show source text

2025 CALIFORNIA PLUMBING CODE 359

REFERENCED STANDARDS

TABLE 1701.2 (continued) STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER	DOCUMENT TITLE	APPLICATION
UL 563-2009	Ice Makers (with revisions through May 26, 2021)	Appliances
UL 569-2013	Pigtails and Flexible Hose Connectors for LP-Gas (with revisions through July 28, 2017)	Fuel Gas
UL 726-1995	Oil-Fired Boiler Assemblies (with revisions through October 9, 2013)	Fuel Gas, Appliances
UL 1206-2003	Electric Commercial Clothes-Washing Equipment (with revisions through June 14, 2021)	Appliances
UL 1331-2005	Station Inlets and Outlets (with revisions through February 5, 2020)	Medical Gas
UL 1795-2016	Hydromassage Bathtubs (with revisions through December 8, 2017)	Fixtures
UL 1951-2011	Electric Plumbing Accessories (with revisions through June 27, 2020)	Miscellaneous
UL 2157-2018	Electric Clothes Washing Machines and Extractors (with revisions through September 20, 2019)	Appliances
WQA	WQA	WQA
WQA S-300-2000	Point-of-Use Low-Pressure Reverse Osmosis Drinking Water Systems	Appliances
WQA/ASPE/ANSI S-803- 2017	Sustainable Drinking Water Treatment Systems	Miscellaneous

360 2025 CALIFORNIA PLUMBING CODE

REFERENCED STANDARDS

ABBREVIATIONS IN TABLE 1701.1 AND TABLE 1701.2

AHAM Association of Home Appliance Manufacturers, 1111 19th Street, NW, Suite 402, Washington, DC 20036.

AAMI Association for the Advancement of Medical Instrumentation, 901 N. Glebe Road, Suite 300, Arlington, VA 22203.

CRC § 5-2019 Medium relevance — show source text

2025 CALIFORNIA PLUMBING CODE 359

REFERENCED STANDARDS

TABLE 1701.2 (continued) STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER	DOCUMENT TITLE	APPLICATION
UL 563-2009	Ice Makers (with revisions through May 26, 2021)	Appliances
UL 569-2013	Pigtails and Flexible Hose Connectors for LP-Gas (with revisions through July 28,

CRC § 402.4 Medium relevance — show source text
E 402.4 Gas Meters. Where installed, gas meters shall be supported by a post or bracket placed on a firm footing or other means providing equivalent support and shall not depend on the gas outlet riser for support. [NFPA 501A:4.2.3.1]

E 402.4.1 Location of Meters. Each gas meter shall be installed in an accessible location and shall be provided with unions or other fittings so that the meter can be removed easily and placed in an upright position. Meters shall not be installed in unventilated or inaccessible locations or closer than 3 feet (914 mm) to sources of ignition. [NFPA 501A:4.2.3.2 – 4.2.3.2.2]

2025 CALIFORNIA PLUMBING CODE 409

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

APPENDIX E

E 402.4.2 Meter Shutoff Valve or Cock. All gas meter installations shall be provided with shutoff valves or cocks located adjacent to and on the inlet side of the meters. In the case of a single meter installation utilizing an LP-Gas container, the container service valve shall be permitted to be used in lieu of the shutoff valve or cock. All gas meter installations shall be provided with test tees located adjacent to and on the outlet side of the meters.

[NFPA 501A:4.2.4.1 – 4.2.4.3]

E 403.0 Multiple Manufactured Home Site Fuel Dis- tribution and Supply Systems.

E 403.1 Manufactured Home Community LP-Gas Supply Systems. Where 10 or more customers are served by one LP-Gas supply system, the installation of the gas supply system shall be in accordance with 49 CFR 192. Other types of liquefied petroleum gas supply systems and the storage and handling of LP-Gas shall be in accordance with NFPA 58 (See also Section E 403.10). [NFPA 501A:4.3.2.1 – 4.3.2.2]

E 403.2 Required Gas Supply. The minimum hourly volume of gas required at each manufactured home site outlet or any section of the manufactured home community gas piping system shall be calculated as shown in Table E 403.2.

In extreme climate areas, additional capacities other than those in Table E 403.2 shall be considered. [NFPA 501A:4.3.4.1 – 4.3.4.2]

TABLE E 403.2

DEMAND FACTORS FOR USE IN CALCULATING GAS PIPING

SYSTEMS IN MANUFACTURED HOME COMMUNITIES

[NFPA 501A: TABLE 4.3.4.1]
CRC § 60-3 Medium relevance — show source text
6003 Highly Toxic and Toxic Solids and Liquids. . . . . . . . 60-3 6004 Highly Toxic and Toxic Compressed Gases . . . . . . . 60-4

6005 Ozone-Gas Generators. . . . . . . . . . . . . . . . . . . . . . . . . 60-8

CHAPTER 61 LIQUEFIED PETROLEUM GASES . . . . . . . . . 61-3

6101 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-3

6102 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-3

6103 Installation of Equipment . . . . . . . . . . . . . . . . . . . . . . 61-3

6104 Location of LP-Gas Containers. . . . . . . . . . . . . . . . . . 61-4

6105 Prohibited Use of LP-Gas. . . . . . . . . . . . . . . . . . . . . . . 61-5

6106 Dispensing and Overfilling . . . . . . . . . . . . . . . . . . . . . 61-5 6107 Safety Precautions and Devices. . . . . . . . . . . . . . . . . 61-5

6108 Fire Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-6

6109 Storage of Portable LP-Gas Containers Awaiting Use or Resale . . . . . . . . . . . . . . . . . . . . . . . 61-6

6110 LP-Gas Containers Not in Service . . . . . . . . . . . . . . . 61-7

6111 Parking and Garaging of LP-Gas Tank Vehicles . . . 61-8

CHAPTER 62 ORGANIC PEROXIDES . . . . . . . . . . . . . . . . . 62-3

6201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62-3

6202 Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62-3

6203 General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 62-3 6204 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62-4

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CONTENTS

CRC § 505.3 Medium relevance — show source text

2025 CALIFORNIA PLUMBING CODE 349

REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
NFPA 88A-2023	Parking Structures	Miscellaneous	507.14.1
NFPA 99-2024	Health Care Facilities Code	Miscellaneous	1301.3, 1309.13(2), 1317.1(9), 1324.5.9.4, 1326.3, 1326.4(3), 1326.8(4), 1327.1
NFPA 211-2024	Standard for Chimneys, Fireplaces, Vents, and Solid Fuel- Burning Appliances	Fuel Gas, Appliances	509.5.2, 509.5.3, 509.5.6.1, 509.5.6.3
NFPA 409-2022	Standard on Aircraft Hangars	Miscellaneous	507.15
NFPA 780-2023	Standard for the Installation of Lightning Protection Systems	Fuel Gas	1211.5
NFPA 1192-2021	Standard on Recreational Vehicles	Fuel Gas	1202.3(18)
NSF	NSF	NSF	NSF
NSF/ANSI 3-2021	Commercial Warewashing Equipment	Appliances	414.1
NSF/ANSI 14-2020	Plastics Piping System Components and Related Materials	Miscellaneous	301.2.3, 604.1, 605.9.1, 606.1
NSF/ANSI 42-2021	Drinking Water Treatment Units – Aesthetic Effects	Appliances	Table 611.1
NSF/ANSI 44-2018	Residential Cation Exchange Water Softeners	Appliances	Table 611.

CRC § 1801.2 Medium relevance — show source text

TABLE 1801.2 (continued) « STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER	DOCUMENT TITLE	APPLICATION
UL 125-2020	Flow Control Valves for Anhydrous Ammonia and LP-Gas (with revisions through August 26, 2021)	Fuel Gas
UL 132-2021	Safety Relief Valves for Anhydrous Ammonia and LP-Gas	Fuel Gas
UL 144-2021	LP-Gas Regulators (with revisions through August 26, 2021)	Fuel Gas
UL 174-2004	Household Electric Storage Tank Water Heaters (with revisions through Decem- ber 16, 2021)	Appliances
UL 180-2021	Combustible Liquid Tank Accessories (with revisions through August 25, 2021)	Gauges, Level Gauges
UL 252-2017	Compressed Gas Regulators (with revisions through August 10, 2018)	Fuel Gas
UL 268-2016	Smoke Detectors for Fire Alarm Systems (with revisions through October 31, 2019)	Smoke Detectors
UL 343-2008	Pumps for Oil-Burning Appliances (with revisions through December 6, 2021)	Fuel Gas, Appliances
UL 353-1994	Limit Controls (with revisions through November 8, 2011)	Controls
UL 404-2010	Gauges, Indicating Pressure, for Compressed Gas Service (with revisions through February 11, 2015)	Fuel Gas
UL 429-2013	Electrically Operated Valves (with revisions through March 19, 2021)	Valves
UL 443-2006	Steel Auxiliary Tanks for Oil-Burner Fuel (with revisions through May 31, 2018)	Fuel Gas
UL 521-1999	Heat Detectors for Fire Protective Signaling Systems (with revisions through November 18, 2020)	Heat Detectors
UL 525-2008	Flame Arresters (with revisions through October 13, 2017)	Flame Arrestors
UL 565-2013	Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas (with revisions through February 23, 2018)	Fuel Gas
UL 569-2013	Pigtails and Flexible Hose Connectors for LP-Gas (with revisions through July 28, 2017)	Fuel Gas
UL 732-2018	Oil-Fired Storage Tank Water Heaters (with revisions through August 9, 2018)	Fuel Gas, Appliances
UL 733-2019	Oil-Fired Air Heaters and Direct-Fired Heaters	Water Heaters, Direct Fired, Oil Fired
UL 842-2020	Valves for Flammable Fluids and Combustible Liquids (with revisions through October 27, 2017)	Valves
UL 1389-2019	Plant Oil Extraction Equipment for Installation and Use in Ordinary (Unclas- sified) Locations and Hazardous (Classified) Locations (with revisions through October 13, 2020)	Plant Oil Extraction
UL 1453-2016	Electric Booster and Commercial Storage Tank Water Heaters (with revisions through May 18,

CRC § 704-2017 Medium relevance — show source text

382 2025 CALIFORNIA MECHANICAL CODE

REFERENCED STANDARDS

TABLE 1801.2 (continued) « STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER	DOCUMENT TITLE	APPLICATION
UL 125-2020	Flow Control Valves for Anhydrous Ammonia and LP-Gas (with revisions through August 26, 2021)	Fuel Gas
UL 132-2021	Safety Relief Valves for Anhydrous Ammonia and LP-Gas	Fuel Gas
UL 144-2021	LP-Gas Regulators (with revisions through August 26, 2021)	Fuel Gas
UL 174-2004	Household Electric Storage Tank Water Heaters (with revisions through Decem- ber 16, 2021)	Appliances
UL 180-2021	Combustible Liquid Tank Accessories (with revisions through August 25, 2021)	Gauges, Level Gauges
UL 252-2017	Compressed Gas Regulators (with revisions through August 10, 2018)	Fuel Gas
UL 268-2016	Smoke Detectors for Fire Alarm Systems (with revisions through October 31, 2019)	Smoke Detectors
UL 343-2008	Pumps for Oil-Burning Appliances (with revisions through December 6, 2021)	Fuel Gas, Appliances
UL 353-1994	Limit Controls (with revisions through November 8, 2011)	Controls
UL 404-2010	Gauges, Indicating Pressure, for Compressed Gas Service (with revisions through February 11, 2015)	Fuel Gas
UL 429-2013	Electrically Operated Valves (with revisions through March 19,

CRC § 378-2006 Medium relevance — show source text

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
UL 378-2006	Draft Equipment (with revisions through September 17, 2013)	Fuel Gas, Appliances	509.3.3, 509.13, 509.14.1
UL 399-2017	Drinking Water Coolers (with revisions through July 31, 2020)	Fixtures	415.1
UL 430-2015	Waste Disposers (with revisions through September 14, 2021)	Appliances	419.1
UL 441-2016	Gas Vents (with revisions through August 28, 2019)	Fuel Gas, Vents	509.1
UL 467-2013	Grounding and Bonding Equipment (with revisions through June 7, 2017)	Miscellaneous	1211.2.5
UL 499-2014	Electric Heating Appliances (with revisions through October 22, 2021)	Appliances	Table 501.1(1)
UL 641-2010	Type L Low-Temperature Venting Systems (with revisions through April 23, 2018)	Fuel Gas	509.1
UL 723-2018	Test for Surface Burning Characteristics of Building Materials	Miscellaneous	701.2(2), 903.1(2), 1101.4
UL 732-2018	Oil-Fired Storage Tank Water Heaters (with revisions through August 9, 2018)	Fuel Gas, Appliances	Table 501.1(1)
UL 749-2018	Household Dishwashers	Appliances	414.1
UL 778-2016	Motor-Operated Water Pumps (with revisions throughJune 29, 2021)	Appliances	1101.14
UL 921-2020	Commercial Dishwashers	Appliances	414.1
UL 959-2010	Medium Heat Appliance Factory-Built Chimneys (with revisions through August 28, 2019)	Fuel Gas, Appliances	509.5.1
UL 1453-2016	Electric Booster and Commercial Storage Tank Water Heaters (with revisions through May 18, 2018)	Appliances	Table 501.1(1)
UL 1479-2015	Fire Tests of Penetration Firestops (with revisions through May 18, 2021)	Miscellaneous	1404.3, 1405.3
UL 1738-2010	Venting Systems for Gas-Burning Appliances, Categories II, III, and IV (with revisions through August 26, 2021)	Fuel Gas, Appliances	509.4.1, 509.4.2, 509.4.3
UL 1777-2015	Chimney Liners (with revisions through April 11, 2019)	Chimney Liners	509.5.3(2)
UL 2523-2009	Solid Fuel-Fired Hydronic Heating Appliances, Water Heaters, and Boilers (with revisions through March 16, 2018)	Fuel Gas, Appliances	Table 501.1(1)
UL 2561-2016	1400 Degree Fahrenheit Factory-Built Chimneys (with revisions through April 19, 2018)	Fuel Gas, Appli- ances	509.5.

CRC § 705.10 Medium relevance — show source text

Waste,
and Vent (DWV), Sewer, Sanitary, and Storm Plumbing Sys-
tems for Above and Below Ground Use|Joints|705.10|

340 2025 CALIFORNIA PLUMBING CODE

REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
ASTM C1540-2020	Standard Specification for Heavy-Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings	Joints	705.2.2
ASTM C1563-2008 (R2021)	Standard Test Method for Gaskets for Use in Connection with Hub and Spigot Cast Iron Soil Pipe and Fittings for Sanitary Drain, Waste, Vent, and Storm Piping Applications	Joints	705.2.2
ASTM C1822-2021	Standard Specification for Insulating Covers on Accessible Lavatory Piping	Miscellaneous	403.3
ASTM D1253-2014	Standard Test Method for Residual Chlorine in Water	Miscellaneous	1506.10.6, 1603.4.1
ASTM D1785-2021a	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120	Piping	Table 604.1, Table 701.2
ASTM D2235-2021	Standard Specification for Solvent Cement for Acrylonitrile- Butadiene-Styrene (ABS) Plastic Pipe and Fittings	Joints	705.1.2
ASTM D2239-2021	Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter	Piping	Table 604.1
ASTM D2241-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure- Rated Pipe (SDR Series)	Piping	Table 604.1
ASTM D2464-2015	Standard Specification for Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
ASTM D2466-2021	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40	Fittings	Table 604.1
ASTM D2467-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
ASTM D2513-2020	Standard Specification for Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings	Piping	1208.5.4, 1208.5.6.2, 1208.5.10.2, 1210.1.7.1(1)
ASTM D2564-2020	Standard Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems	Joints	605.12.2, 705.6.

CRC § 31-2022 Medium relevance — show source text
2025 CALIFORNIA PLUMBING CODE 453

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

454 2025 CALIFORNIA PLUMBING CODE

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

"The information contained in this appendix is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI's requirements for an ANS. As such, this appendix may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard."

The following IAPMO Installation Standard is included here for the convenience of the users of the Uniform Plumbing Code. It is not considered as a part of the Uniform Plumbing Code unless formally adopted as such. This Installation Standard is an independent, stand-alone document published by the International Association of Plumbing and Mechanical Officials and is printed herein by the expressed written permission of IAPMO.

INSTALLATION STANDARD FOR PEX TUBING SYSTEMS

FOR HOT- AND COLD-WATER DISTRIBUTION

IAPMO IS 31-2022

The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

1 Scope

1.1 General

1.1.1 This Standard specifies requirements for the installation of SDR 9 CTS crosslinked polyethylene (PEX) tubing and fittings, including cold-expansion, crimp, press, and mechanical compression fittings, intended for hot- and cold-water distribution systems within buildings.

1.1.2 This Standards applies to

(a) SDR 9 CTS PEX tubing complying with ASTM F876 and pressure-rated in accordance with PPI TR-3; and (b) PEX fitting systems complying with (i) ASTM F877, for mechanical compression fittings and metal or plastic insert fittings with stainless steel press sleeves; (ii) ASTM F1807 or ASTM F2159, for metal or plastic insert fittings with copper crimp rings; (iii) ASTM F1960, for cold expansion fittings with PEX reinforced rings; or (iv) ASTM F2080, for cold expansion fittings with metal compression sleeves. 1.2 Terminology

In this Standard,

(a) “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard; (b) “should” is used to express a recommendation, but not a requirement; (c) “may” is used to express an option or something permissible within the scope of the Standard; and (d) “can” is used to express a possibility or a capability. Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separate explanatory or informa

tive material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements.

1.3 Units of Measurement

SI units are the primary units of record in global commerce. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application, but each unit system is to be used independently. All references to gallons are to U.S. gallons.

2 Reference Publications

CRC § 1.859 Medium relevance — show source text

78|–|1.859|0.463| |35.31|–|2.247|0.559| |38.84|–|2.667|0.663| |42.37|–|3.121|0.775| |45.90|–|3.607|0.895| |49.43|–|4.125|1.022| |52.97|–|–|1.157| |56.50|–|–|1.299| |60.03|–|–|1.449| |63.56|–|–|1.607| |67.09|–|–|1.772| |70.62|–|–|1.944| |81.21|–|–|2.503| |91.81|–|–|3.127| |102.40|–|–|3.813|

For SI units: 1 standard cubic foot per minute = 28.32 SLPM, 1 inch = 25 mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa

Notes: 1 Based on pressure of 14.7 psig (101 kPa) at 68°F (20°C). 2 Based on pressure of 55 psig (379 kPa) at 68°F (20 °C).

2025 CALIFORNIA PLUMBING CODE 291

HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

TABLE 1323.1.4(5) PRESSURE LOSS FOR VACUUM (continued)

FLOW RATE (SCFM)1	VACUUM LOSS (inch of mercury) PER 100 FEET FOR COPPER TUBE2	Col3	Col4	Col5	Col6
FLOW RATE (SCFM)1	3⁄4 INCH TUBE	1 INCH TUBE	11⁄4 INCH TUBE	11⁄2 INCH TUBE	2 INCH TUBE
49.43	–	–	–	3.645	0.956
52.97	–	–	–	4.122	1.081
56.50	–	–	–	4.626	1.212
63.56	–	–	–	–	1.495
70.62	–	–	–	–	1.803
77.68	–	–	–	–	2.138
84.74	–	–	–	–	2.497
91.81	–	–	–	–	2.882
98.87	–	–	–	–	3.291
105.93	–	–	–	–	3.724
112.99	–	–	–	–	4.181

California Residential Code Medium relevance — show source text
IN CUBIC FEET OF GAS PER HOUR**|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR| |10
25
30
40
50|270
166
151
129
115|353
220
200
172
154|587
374
342
297
266|700
444
405
351
314|1100
709
650
567
510|1370
876
801
696
624|2590
1620
1480
1270
1140|2990
1870
1700
1470
1310|4510
2890
2640
2300
2060|5037
3258
2987
2605
2343|9600
6040
5510
4760
4260|10 700
6780
6200
5380
4820|18 600
11 900
10 900
9440
8470|21 600
13 700
12 500
10 900
9720| |75
80
100
150
200|93
89
79
64
55|124
120
107
87
75|218
211
189
155
135|257
249
222
182
157|420
407
366
302
263|512
496
445
364
317|922
892
795
646
557|1070
1030
920
748
645|1690
1640
1470
1210
1050|1932
1874
1685
1389
1212|3470
3360
3000
2440
2110|3950
3820
3420
2800
2430|
CRC § 5807.2.1.2 Medium relevance — show source text
5807.2.1.2 Motorized equipment. Metal hydride storage systems used on motorized equipment, shall be installed in a manner that protects valves, pressure regulators, fittings and controls against accidental impact.

5807.2.1.2.1 Protection from damage. Metal hydride storage systems, including cylinders, containers, tanks and fittings, shall not extend beyond the platform of the mobile equipment.

5807.2.2 Valves. Valves on containers, cylinders and tanks shall remain closed except when containers are connected to closed systems and ready for use.

58-6 2025 CALIFORNIA FIRE CODE

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

FLAMMABLE GASES AND FLAMMABLE CRYOGENIC FLUIDS

SECTION 5808—HYDROGEN FUEL GAS ROOMS

5808.1 General. Where required by this code, hydrogen fuel gas rooms shall be designed and constructed in accordance with Sections 5808.1 through 5808.7 and the California Building Code .

5808.2 Location. Hydrogen fuel gas rooms shall not be located below grade.

5808.3 Design and construction. Hydrogen fuel gas rooms not exceeding the maximum allowable quantity per control area in Table 5003.1.1(1) shall be separated from other areas of the building in accordance with Section 509.1 of the California Building Code .

5808.3.1 Pressure control. Hydrogen fuel gas rooms shall be provided with a ventilation system designed to maintain the room at a negative pressure in relation to surrounding rooms and spaces.

5808.3.2 Windows. Operable windows in interior walls shall not be permitted. Fixed windows shall be permitted where in accordance with Section 716 of the California Building Code .

5808.4 Exhaust ventilation. Hydrogen fuel gas rooms shall be provided with mechanical exhaust ventilation in accordance with the applicable provisions of Section 2311.8.2.

5808.5 Gas detection system. Hydrogen fuel gas rooms shall be provided with a gas detection system that complies with Sections 916, 5808.5.1 and 5808.5.2.

5808.5.1 System activation. Activation of a gas detection system alarm shall result in both of the following:
1. Initiation of distinct audible and visible alarm signals both inside and outside of the hydrogen fuel gas room.
2. Automatic activation of the mechanical exhaust ventilation system.
5808.5.2 Failure of the gas detection system. Failure of the gas detection system shall automatically activate the mechanical exhaust ventilation system, stop hydrogen generation and cause a trouble signal to sound at an approved location.

5808.6 Explosion control. Explosion control shall be provided where required by Section 911.

5808.7 Standby power. Mechanical ventilation and gas detection systems shall be connected to a standby power system in accordance with Section 1203.

SECTION 5809—ON-DEMAND HYDROGEN MOBILE FUELING OPERATIONS

5809.1 General. On-demand hydrogen mobile fueling operations that dispense gaseous hydrogen into the fuel tanks of motor vehicles shall comply with Sections 5809.1 through 5809.6.5. Mobile fueling of liquid hydrogen is prohibited.
CRC § 28-1 Medium relevance — show source text
2025 CALIFORNIA BUILDING CODE 28-1

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

28-2 2025 CALIFORNIA BUILDING CODE

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

28 MECHANICAL SYSTEMS

User notes:

About this chapter: Mechanical systems are a key element of any building. Chapter 28 regulates such systems by linking to the California Mechanical Code and California Plumbing Code, where details of mechanical system requirements are provided.

SECTION 2801—GENERAL

[M] 2801.1 Scope. The provisions of this chapter, the California Mechanical Code and the California Plumbing Code shall govern the design, construction, erection and installation of mechanical appliances, equipment and systems used in buildings and structures covered by this code. Masonry chimneys, fireplaces and barbecues shall comply with the California Mechanical Code and Chapter 21 of this code. The California Fire Code, the International Property Maintenance Code, the California Mechanical Code and the California Plumbing Code shall govern the use and maintenance of mechanical components, appliances, equipment and systems. The Califor- nia Existing Building Code, the California Mechanical Code and the California Plumbing Code shall govern the alteration, repair, relocation, replacement and addition of mechanical components, appliances, equipment and systems.

SECTION 2802—SPARK ARRESTOR [SFM]

2802.1 Spark arrestor. [SFM] All chimneys attached to any appliance or fireplace that burns solid fuel shall be equipped with an approved spark arrester. The spark arrestor shall meet all of the following requirements: 1. The net free area of the spark arrestor shall be not less than four times the net free area of the outlet of the chimney. 2. The spark arrestor screen shall have heat and corrosion resistance equivalent to 19-gage galvanized steel or 24-gage stainless steel.

3. Openings shall not permit the passage of spheres having a diameter larger than [1] / 2 inch (12.7 mm) nor block the passage of spheres having a diameter of less than [3] / 8 inch (9.5 mm). 4. The spark arrestor shall be accessible for cleaning and the screen or chimney cap shall be removable to allow for cleaning of the chimney flue.

2025 CALIFORNIA BUILDING CODE 28-3

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

28-4 2025 CALIFORNIA BUILDING CODE

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

29 PLUMBING SYSTEMS

(Not Adopted By The State Of California) Refer To California Plumbing Code, Title 24, Part 5

2025 CALIFORNIA BUILDING CODE 29-1

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

29-2 2025 CALIFORNIA BUILDING CODE

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

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE
CRC § 11.0 Medium relevance — show source text
11.0 - 1.11.11_|||X|||||||||||||||||||||| |1.13.0||||||||||||||||||||X||||| |Division II - Scope and
Administration||||||||||||||||||||||||| |101.0||||||||||X|X|X||X|X|||||||||| |102.0||||||||||X|X|X||X|X|||||||||| |103.0||||||||||X|X|X||X|X|||||||||| |104.2 Items 1 & 2||||X|X|||||||||||||||||||| |104.3.1||||||||||X|X|X||X|X|||||||||| |104.4.3.1|X|||||||||||||||||||||||| |105.0||||||||||X|X|X||X|X||||||||||

This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

2 2025 CALIFORNIA PLUMBING CODE

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

CHAPTER 1

ADMINISTRATION

DIVISION I

CALIFORNIA ADMINISTRATION

1.1.0 General.

1.1.1 Title. These regulations shall be known as the Califor- nia Plumbing Code, may be cited as such and will be referred to herein as “this code.” The California Plumbing Code is Part 5 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of plumbing regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 Uniform Plumb- ing Code of the International Association of Plumbing and Mechanical Officials with necessary California amendments.

1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.
CRC § 101.2.2 Medium relevance — show source text
CFC—25: California Fire Code

101.2.2, 101.4.2, 301.3.1, 302.2, 307.1, 308.1, 802.2.1, 802.2.3, 803.2.3, 803.4.1.1, 803.4.1.2, 803.4.1.3, 803.4.1.4, 803.4.1.5, 803.4.1.6, Table 804.5.1.1(1), 904.1.5, 1011.6.1.1, 1303.1.2, 1305.2.8.1, 1305.2.14, 1305.2.14.1, 1401.2, 1501.1, 1501.5, 1502.1, 1502.1.1, 1502.2, 1502.3, 1504.1, 1507.1, 1507.2

CMC—25: California Mechanical Code

302.2, 702.7, 807.1, 902.1.1, 1008.1, 1305.2.7.1, 1305.2.8, 1305.2.8.1

CPC—25: California Plumbing Code

302.2, 408.1, 702.7, 1009.1, 1009.2, 1009.3, 1009.5, 1302.1.6, 1503.1

16-4 2025 CALIFORNIA EXISTING BUILDING CODE

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

REFERENCED STANDARDS

CRC—25: California Residential Code

101.2, 101.4.1, 104.3.1, 109.3.3, 109.3.10, 302.2, 307.1, 308.1, 401.3, 402.1, 405.2.6, 502.2, 502.3, 502.4, 503.2, 503.3, 503.11, 505.2, 505.3, 507.3, 701.3, 702.4, 702.5, 706.2, 708.1, 805.2, 806.4, 809.1, 906.2, 907.1, 1011.2.1, 1103.1, 1103.2, 1103.3, 1104.1, 1201.4, 1302.1.2, 1302.1.3, 1302.1.3, 1303.1.3, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6

ICC 300—2023: ICC Standard on Bleachers, Folding and Telescopic Seating and Grandstands

301.1.1, 401.1.1, 1401.1.1

ICC A117.1—2017: Accessible and Usable Buildings and Facilities
CRC § 1323.13.3 Medium relevance — show source text
2, 1323.13.3| |1326.4 - 1326.10|1326.5 - 1326.11| |1505.6 - 1505.14|1505.5 - 1505.13| |Figure 1505.10|Figure 1505.9| |1506.6 - 1506.13|1506.5 - 1506.12| |1603.3 - 1603.4|1603.4 - 1603.5| |Table 1603.4|Table 1603.5| |1603.5 - 1603.19|1603.6 - 1603.20| |1603.20|1503.2.4| |L 402.9 - L 402.11|L 402.8 - L 402.10| |L 404.9 - L 404.12|L 404.8 - L 404.11| |L 411.5, L 411.6|L 411.2, L411.3| |L 411.7|L 411.4| |L 411.9 - L 411.12|L 411.5 - L 411.8|

xxii 2025 CALIFORNIA PLUMBING CODE

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

RELATED PUBLICATIONS AND SERVICES

The Documents Listed are Not by this Reference Adopted by The State of California.

IAPMO provides a variety of other products which are useful for inspectors, building officials, architects, engineers,

manufacturers, contractors, plumbers, and apprentices.

IAPMO Headquarters Directory

4755 East Philadelphia Street, Ontario, California 91761-2816

Publication Order Desk Phone: 800-85-IAPMO

Publication Toll Free Fax: 877-85-CODES

E-mail: iapmo@iapmo.org

Website: www.iapmo.org

Free Code Question: 800-201-0335

Uniform Plumbing Code – 2024 Edition:

The Uniform Plumbing Code is the most widely adopted plumbing code in the world. The 2024 edition contains complete “turnkey” requirements for the installation and maintenance of plumbing systems, all in one easy to use book.

Uniform Plumbing Code Illustrated Training Manual:

The UPC Illustrated Training Manual is an excellent reference for anyone involved in the plumbing industry. It contains an extensive definitions section and several hundred comprehensive technical diagrams and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the intent and use of the Code.

Uniform Plumbing Code Study Guide:

This book is the perfect complement to the UPC Illustrated Training Manual. Alone, it constitutes a complete self-study course for learning the UPC. It has hundreds of questions, general practice exams, and plumbing math, pipe sizing exercises and fitting identification. A big help in getting you ready for a certification exam!

Guide to Important Code Questions to the Uniform Plumbing Code:

An excellent reference for learning and understanding plumbing code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

Uniform Mechanical Code – 2024 Edition:

The Uniform Mechanical Code contains complete requirements for the installation and maintenance of heating, ventilating, cooking and refrigeration systems.

Uniform Mechanical Code Illustrated Training Manual:

Contains technical diagrams and illustrations that demonstrate the intent and use of the UMC. A great reference for everyone involved in Mechanical HVACR design and installation.

Uniform Mechanical Code Study Guide:
CRC § 2025 Medium relevance — show source text
Chapter 24 Fuel Gas.

Chapter 24 is not adopted in California. See California Mechanical Code and California Plumbing Code, Title 24, Parts 4 and 5.

Chapter 25 Plumbing Administration.

Chapter 25 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 26 General Plumbing Requirements.

Chapter 26 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 27 Plumbing Fixtures.

Chapter 27 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 28 Water Heaters.

Chapter 28 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 29 Water Supply and Distribution.

Chapter 29 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 30 Sanitary Drainage.

Chapter 30 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 31 Vents.

Chapter 31 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 32 Traps.

Chapter 32 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 33 Storm Drainage.

Chapter 33 is not adopted in California. See California Plumbing Code, Title 24, Part 5.

Chapter 34 General Requirements.

Chapter 34 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 35 Electrical Definitions.

Chapter 35 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 36 Services.

Chapter 36 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 37 Branch Circuit and Feeder Requirements.

Chapter 37 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 38 Wiring Methods.

Chapter 38 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 39 Power and Lighting Distribution.

Chapter 39 is not adopted in California. See California Electrical Code, Title 24, Part 3.

2025 CALIFORNIA RESIDENTIAL CODE xvii

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

Chapter 40 Devices and Luminaires.

Chapter 40 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 41 Appliance Installation.

Chapter 41 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 42 Swimming Pools.

Chapter 42 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 43 Class 2 Remote-control, Signaling and Power-limited Circuits.

Chapter 43 is not adopted in California. See California Electrical Code, Title 24, Part 3.

Chapter 44 Referenced Standards.
CRC § 1305.2.3.3 Medium relevance — show source text
2, 1305.2.3.3, 1305.2.4.1, 1305.2.5, 1305.2.5.1, 1305.2.6, 1305.2.7.1, 1305.2.8, 1305.2.9, 1305.2.9.1, 1305.2.10, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12.1, 1305.2.13, Table 1305.2.15, 1305.2.15.1, 1305.2.16.1, 1305.2.17, 1305.2.17.1, 1305.2.18, 1305.2.18.1, 1305.2.19, Table 1305.2.19, 1305.2.20, 1305.2.20.1, 1307.1.1, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6, 1501.5, 1504.1.1, 1504.1.4.1, 1504.1.7, 1509.1, 1509.3, 1510.1

CEC — 25 : California Energy Code

302.2, 702.7, 708.1, 809.1, 907.1, 1104.1

CFC—25: California Fire Code

101.2.2, 101.4.2, 301.3.1, 302.2, 307.1, 308.1, 802.2.1, 802.2.3, 803.2.3, 803.4.1.1, 803.4.1.2, 803.4.1.3, 803.4.1.4, 803.4.1.5, 803.4.1.6, Table 804.5.1.1(1), 904.1.5, 1011.6.1.1, 1303.1.2, 1305.2.8.1, 1305.2.14, 1305.2.14.1, 1401.2, 1501.1, 1501.5, 1502.1, 1502.1.1, 1502.2, 1502.3, 1504.1, 1507.1, 1507.2

CMC—25: California Mechanical Code

302.2, 702.7, 807.1, 902.1.1, 1008.1, 1305.2.7.1, 1305.2.8, 1305.2.8.1

CPC—25: California Plumbing Code

302.2, 408.1, 702.7, 1009.1, 1009.2, 1009.3, 1009.5, 1302.1.6, 1503.1
CRC § 309.0 Medium relevance — show source text
2025 CALIFORNIA PLUMBING CODE 469

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

IS 33

Uniform Plumbing Code References for Ductile Iron and PVC Pressure Building Supply and Exterior Cold-Water Piping

The following sections of the 2024 Uniform Plumbing Code apply to ductile iron and PVC pressure building supply and exterior cold-water piping.

Chapter 3 General Regulations

309.0 Workmanship

312.0 Protection of Piping, Materials, and Struc tures

313.0 Hangers, Supports, and Anchors

314.0 Trenching, Excavation, and Backfill

Chapter 6 Water Supply and Distribution

604.0 Materials (water piping)

Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings

605.4 Ductile Iron Pipe and Joints

605.12 PVC Plastic Pipe and Joints

605.16.2 Plastic Pipe to Other Materials

609.0 Installation, Testing, Unions, and Location

Abbreviations

IAPMO International Association of Plumbing and Mechanical Officials

UPC Uniform Plumbing Code published by IAPMO

AWWA American Water Works Association

CSA Canadian Standards Association

Applicable Standards.

ASME B16.4 Gray Iron Threaded Fittings Classes 125 and 250

ASTM D1785 Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

ASTM D2241 Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)

ASTM D2466 Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40

ASTM D2467 Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80

ASTM F1970 Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems

AWWA C110 Ductile Iron and Gray-Iron Fittings

AWWA C111 Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

AWWA C151 Ductile-Iron Pipe, Centrifugally Cast

AWWA C153 Ductile-Iron Compact Fitting

AWWA C900 Polyvinyl Chloride (PVC) Pressure Pipe and Fabricated Fittings, 4 in. through 12 in. (100 mm through 300 mm)

AWWA C904 Crosslinked Polyethylene (PEX) Pressure Tubing, ½ in. through 3 In. (13 mm through 76 mm), for Water Service

AWWA C907 Injection-Molded Polyvinyl Chloride (PVC) Pressure Fittings, 4 In, through 12 in (100 mm through 300 mm) for Water, Wastewater and Reclaimed Water Service

IAPMO/

ANSI UPC-1 Uniform Plumbing Code

470 2025 CALIFORNIA PLUMBING CODE

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
CRC § 995-3019 Medium relevance — show source text
The Uniform Plumbing Code updates every three years in revision cycles that begin twice each year that takes two years to complete.

Each revision cycle advances according to a published schedule that includes final dates for all major events and contains four basic steps as follows:
1. Proposal Stage;
2. Comment Stage;
3. Association Technical Meeting;
4. Council Appeals and Issuance of Code.
IAPMO develops “full consensus” codes built on a foundation of maximum participation and agreement by a broad range of interests. This philosophy has led to producing technically sound codes that promote health and safety, yet do not stifle design or development.

It is important to stress that the process remains committed to the principles of consensus code development where consensus Technical Committees and Correlating Committees revise codes. The public and membership are offered multiple opportunities to debate, provide input and raise concerns through Amending Motions at the annual Assembly Consideration Session. Anyone may submit an appeal related to the issuance of a document through the IAPMO Standards Council.

The 2024 Uniform Plumbing Code is supported by the ASSE International (ASSE), Mechanical Contractors Association of America (MCAA), the Plumbing-Heating-Cooling Contractors National Association (PHCC-NA), the United Association (UA), and the World Plumbing Council (WPC). The presence of these logos, while reflecting support, does not imply any ownership of the copyright to the UPC, which is held exclusively by IAPMO. Further, the logos of these associations indicate the support of IAPMO’s open consensus process being used to develop IAPMO’s codes and standards.

2025 CALIFORNIA PLUMBING CODE xi

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

FOREWORD

The addresses of the organizations are as follows: ASSE – 18927 Hickory Creek Drive, Suite 220 • Mokena, IL 60448 • (708) 995-3019 MCAA – 1385 Piccard Drive • Rockville, MD 20850 • (301) 869-5800 PCA – 1385 Piccard Drive • Rockville, MD 20850 • (301) 869-5800 PHCC-NA – 180 S Washington Street, Suite 100 • Falls Church, VA 22040-6808 • (800) 533-7694 UA – Three Park Place • Annapolis, MD 21401 • (410) 269-2000 WPC – Auf der Mauer 11 • 8021 Zurich, Switzerland • Secretariat@worldplumbing.org

Adoption The Uniform Plumbing Code is available for adoption and use by jurisdictions in the United States and Internationally. Its use within a governmental jurisdiction is accomplished through adoption by reference in accordance with applicable jurisdictional laws. At adoption, jurisdictions should insert the applicable information in bracketed words in the sample ordinance. The sample legislation for adoption of the Uniform Plumbing Code on page xx provides key components, regulations and resolutions.

Revision Markings Solid vertical lines in the margins indicate a technical change from the requirements of the 2021 edition. An arrow ( ) in the margin indicates where an entire section, paragraph, exception, figure, or table has been deleted, or an item in a list of items or a table has been deleted.

A double right angle ( « ) in the margin indicates that the text, table, or figure has been relocated within the code. The table found on page xxii points out the relocations in the 2024 edition of the Uniform Plumbing Code .

CRC § 1.11.0. Medium relevance — show source text

Pipe sizes recognized for this purpose are 2 inches, 2 [1] ⁄ 2 inches, 3 inches, 3 [1] ⁄ 2 inches, 4 inches, 4 [1] ⁄ 2 inches, 5 inches, 6 inches, etc. (50 mm, 65 mm, 80 mm, 90 mm, 100 mm, 115 mm, 125 mm, 150 mm, etc.). The tailpiece between the floor drain and its trap shall be 2 inches (50 mm) (or normal size) to ensure that the amount of wastewater entering the trap partially fills the waste branch. A 3 inch (80 mm) floor drain would thus require a 4 inch (100 mm) trap, and a 4 inch (100 mm) floor drain would require a 5 inch (125 mm) trap for the reasons previously stated.

WHERE IN DOUBT, CHECK WITH YOUR LOCAL Authority Having Jurisdiction.

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384 2025 CALIFORNIA PLUMBING CODE

CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLE

APPENDIX C - ALTERNATE PLUMBING SYSTEMS

(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting Agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting Agency	BSC	BSC- CG	SFM	1	2	1-AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt Entire Chapter
Adopt Entire Chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter/Section

This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

2025 CALIFORNIA PLUMBING CODE 385

CMC § 5 Medium relevance — show source text

Revision Markings Solid vertical lines in the margins indicate a technical change from the requirements of the 2021 edition. An arrow ( ) in the margin indicates where an entire section, paragraph, exception, figure, or table has been deleted, or an item in a list of items or a table has been deleted.

A double right angle ( « ) in the margin indicates that the text, table, or figure has been relocated within the code. The table found on page xxi points out the relocations in the 2024 edition of the Uniform Mechanical Code .

TIA TIA indicates that the revision is the result of a Tentative Interim Amendment. TIA For further information on tentative interim amendments see Section 5 of the IAPMO TIA TIA Regulations Governing Committee Projects available at http://www.iapmo.org/code**TIA** development

A reference in brackets [ ] following a section or paragraph indicates material that has been extracted from another document. A reference in brackets { } following a section or paragraph indicates material that has been extracted from another document and has been modified further by the Technical Committee. This reprinted material is not the complete and official position of the source document on the referenced subject that is represented by the standard in its entirety. Material contained in this document that is taken or extracted from NFPA standards is used with permission of the National Fire Protection Association. This material is not the complete and official position of the NFPA on the reference subject, which is represented solely by the relevant standard in its entirety. NFPA standards can be accessed at www.nfpa.org. In addition, this extracted material may include revisions or modifications developed through IAPMO’s standards development process. Therefore, NFPA disclaims responsibility for the content of this code.

Text that is extracted pursuant to IAPMO’s Extract Guidelines, but outside of the regular revision process is denoted with the use of the source document in the margin. This text is not fully processed by IAPMO in accordance with ANSI’s public announcement consensus requirements for an American National Standard (ANS) nor approved by ANSI’s Board of Standards Review. The next revision cycle processes such text in accordance with those requirements.

xii 2025 CALIFORNIA MECHANICAL CODE

FORMAT OF THE UNIFORM MECHANICAL CODE

The format of the Uniform Mechanical Code (UMC) arranges each chapter in accordance with a specific subject matter. However, Chapter 3 is dedicated to general requirements that are applicable to every chapter. The subject matters are divided as follows:

CHAPTERS	SUBJECTS
1	Administration
2	Definitions
3	General Regulations
4	Ventilation Air
5	Exhaust Systems
6	Duct Systems
7	Combustion Air
8	Chimneys and Vents
9	Installation of Specific Appliances
10	Boilers and Pressure Vessels
11	Refrigeration
12	Hydronics
13	Fuel Gas Piping
14	Process Piping
15	Solar Energy Systems
16	Stationary Power

CRC § 510.2 Medium relevance — show source text

432 2025 CALIFORNIA PLUMBING CODE

APPENDIX G

510.2(1) is 210 000 Btu/h (62 kW), and after reducing by 20 percent is 168 000 Btu/h (49.2 kW). Therefore, a 5 inch (127 mm) corrugated metal liner should be used in this example.

Single Wall Connectors. Once it has been established that relining the chimney is necessary, Type B double-wall vent connectors are not specifically required. This example could be redone using Table 510.2(2) for single-wall vent connectors. For this case, the vent connector and liner diameters would be the same as found for Type B double-wall connectors. [NFPA 54:F.2.4]

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434 2025 CALIFORNIA PLUMBING CODE

CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLE

APPENDIX H - PRIVATE SEWAGE DISPOSAL SYSTEMS

(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting Agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting Agency	BSC	BSC- CG	SFM	1	2	1-AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt Entire Chapter	X			X	X
Adopt Entire Chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter/Section

2025 CALIFORNIA PLUMBING CODE 435

CRC § 37-2020 Medium relevance — show source text

336 2025 CALIFORNIA PLUMBING CODE

REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
ASME B16.3-2021	Malleable Iron Threaded Fittings: Classes 150 and 300	Fittings	Table 604.1, Table 701.2
ASME B16.4-2021	Gray Iron Threaded Fittings: Classes 125 and 250	Fittings	Table 604.1
ASME B16.5-2020	Pipe Flanges and Flanged Fittings: NPS1⁄2 through NPS 24 Metric/Inch	Fittings	1208.5.11.2(1)
ASME B16.12-2019	Cast Iron Threaded Drainage Fittings	Fittings	Table 701.2
ASME B16.15-2018	Cast Copper Alloy Threaded Fittings: Classes 125 and 250	Fittings	Table 604.1
ASME B16.18-2018	Cast Copper Alloy Solder Joint Pressure Fittings	Fittings	Table 604.1
ASME B16.20-2017	Metallic Gaskets for Pipe Flanges	Joints	1208.5.12.2
ASME B16.21-2021	Nonmetallic Flat Gaskets for Pipe Flanges	Joints	1208.5.12.3
ASME B16.22-2018	Wrought Copper and Copper Alloy Solder-Joint Pressure Fit- tings	Fittings	Table 604.1, 1321.1
ASME B16.23-2016	Cast Copper Alloy Solder Joint Drainage Fittings: DWV	Fittings	Table 701.2
ASME B16.24-2016	Cast Copper Alloy Pipe Flanges, Flanged Fittings, and Valves: Classes 150, 300, 600, 900, 1500, and 2500	Fittings	1208.5.11.3
ASME B16.

CRC § 1106.2.6. Medium relevance — show source text
(1) The space(s) containing the machinery is (are) separated from other occupancies by tight construction with tightfitting doors.

(2) Access is restricted to authorized personnel.

(3) Refrigerant detectors are installed with the sensing location and alarm level as required in refrigeration machinery rooms in accordance with Section 1106.2.6.

(4) Open flames and surfaces exceeding 800°F (427°C) shall not be permitted where a Group A2, B2, A3, or B3 refrigerant, is used.

(5) Electrical equipment that is in accordance with Class 1, Division 2, of NFPA 70 where the quantity of a Group A2, B2, A3, or B3 refrigerant in an independent circuit is capable of exceeding 25 percent of the lower flammability limit (LFL) upon release to the space based on the volume determined in accordance with Section 1104.2.1 through Section 1104.2.3.

(6) Refrigerant containing parts in systems exceeding 100 horsepower (74.6 kW) compressor drive power, except evaporators used for refrigeration or dehumidification, condensers used for heating, control and pressure-relief valves for either, low-probability pumps, and connecting piping, are located in a machinery room or outdoors.

[ASHRAE 15:7.2.2]

1104.5 Flammable Refrigerants. The total of Group A2, B2, A3, and B3 refrigerants, other than Group A2L and B2L refrigerants shall not exceed 1100 pounds (498.9 kg) without approval by the Authority Having Jurisdiction. Institutional Occupancies shall comply with Section 1104.3. Machinery rooms required in accordance with Section 1106.0 based on flammability shall be constructed and maintained in accordance with Section 1106.2.1 through Section 1106.2.6 and Section 1106.11 for Group A2L and B2L refrigerants. 1104.6 Group A2L Refrigerants for Human Comfort. High-probability systems using Group A2L refrigerants for human comfort applications shall comply with this section.

[ASHRAE 15:7.6]

1104.6.1 Refrigerant Concentration Limits. Occupied spaces shall comply with the releasable charge limitations of the equipment listing and ASHRAE 15. Unoccupied spaces with refrigerant containing equipment, not including continuous piping or tubing, shall comply with the releasable charge limitations of the equipment listing or Section 1104.6.4. {ASHRAE 15:7.6.1-7.6.1.2}

1104.6.2 Listing and Installation Requirements. Refrigeration systems shall be listed and shall be installed in accordance with listing, the manufacturer’s instructions, and any markings on the equipment restricting the installation. [ASHRAE 15:7.6.2]

1104.6.2.1 Nameplate. The nameplate required by Section 1115.5 shall include a symbol indicating that a flammable refrigerant is used, as specified by the product listing. [ASHRAE 15:7.6.2.1]

1104.6.2.2 Labeling. A label indicating a flammable refrigerant is used shall be placed adjacent to service ports and other locations where service involving components containing refrigerant is performed, as specified by the product listing.
CRC § 0.06 Medium relevance — show source text
600|17 300|11 530|8650|6920|5765|4945|4325|3845|3460|3145|2880| |6|563|54 000|27 000|17 995|13 500|10 800|9000|7715|6750|6000|5400|4910|4500| |8|1208|116 000|58 000|38 660|29 000|23 200|19 315|16 570|14 500|12 890|11 600|10 545|9600|

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 inch per hour = 25.4 mm/h, 1 square foot = 0.0929 m [2]

Notes: 1 Maximum discharge capacity, gpm (L/s) with approximately 1 3 ⁄ 4 inch (44 mm) head of water at the drain. 2 For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the 1 inch per hour (25.4 mm/h) column by the desired rainfall rate. 3 Vertical piping shall be round, square, or rectangular. Square pipe shall be sized to enclose its equivalent round pipe. Rectangular pipe shall have not less than the same cross-sectional area as its equivalent round pipe, except that the ratio of its side dimensions shall not exceed 3 to 1.

(3) For two adjacent walls of unequal height – add 35 percent of the total common height and add 50 percent of the remaining height of the highest wall. (4) Two opposite walls of same height – add no additional

area.

(5) Two opposite walls of differing heights – add 50 percent of the wall area above the top of the lower wall. (6) Walls on three sides – add 50 percent of the area of the inner wall below the top of the lowest wall, plus an allowance for the area of the wall above the top of the lowest wall, in accordance with Section 1103.4(3) and Section 1103.4(5) above. (7) Walls on four sides – no allowance for wall areas below the top of the lowest wall – add for areas above the top of the lowest wall in accordance with Section 1103.4(1), Section 1103.4(3), Section 1103.4(5), and Section 1103.4(6) above.

1104.0 Values for Continuous Flow.

1104.1 General. Where there is a continuous or semi-continuous discharge into the building storm drain or building storm sewer, as from a pump, ejector, air-conditioning plant, or similar device, 1 gpm (0.06 L/s) of such discharge shall be computed as being equivalent to 24 square feet (2.2 m [2] ) of roof area, based upon a rate of rainfall of 4 inches per hour (in/h) (102 mm/h).

1105.0 Controlled-Flow Roof Drainage. 1105.1 Application. Instead of sizing the storm drainage system in accordance with Section 1103.0, the roof drainage shall be permitted to be sized by controlled flow and storage of the storm water on the roof, provided the following conditions are met:

(1) The water from a 25-year frequency storm shall not be stored on the roof exceeding 24 hours.
CRC § 1.1.1.8 Medium relevance — show source text
— Code of Federal Regulations (CFR) Title 49, Transportation, Part 192 Transportation of Natural and other Gas by Pipeline: Minimum Federal Safety Standards, Section 192.319, “Installation of pipe in a ditch.”

California Public Utilities Code, Article 3, Equipment, Practices, and Facilities, Section 787

PG&E Internal ©2017 Pacific Gas & Electric Company. All rights reserved. Page 3 of 5

Backfill Sand

Reference

Documents

Engineering Material Specification: EMS-4123 Publication Date: 08/24/2016 Effective Date: 09/7/2016 Rev. 1a

Developmental References :

American Association of State Highway and Transportation Officials (AASHTO) M 145, “Soil Classification System”.

A.W. Peabody, Control of Pipeline Corrosion, Second Edition (National Association of Corrosion, 2001)

California Department of Transportation (Caltrans) Corrosion Guidelines

Caltrans 2015 Standard Specifications

CRC § 5.2 Medium relevance — show source text

DIAMETER OF GUTTER (1⁄8 inch per foot slope)	MAXIMUM RAINFALL RATES BASED ON ROOF AREA (square feet)	Col3	Col4	Col5	Col6
inches	2 (in/h)	3 (in/h)	4 (in/h)	5 (in/h)	6 (in/h)
3	480	320	240	192	160
4	1020	681	510	408	340
5	1760	1172	880	704	587
6	2720	1815	1360	1085	905
7	3900	2600	1950	1560	1300
8	5600	3740	2800	2240	1870
10	10 200	6800	5100	4080	3400

DIAMETER OF GUTTER (1⁄4 inch per foot slope)	MAXIMUM RAINFALL RATES BASED ON ROOF AREA (square feet)	Col3	Col4	Col5	Col6
inches	2 (in/h)	3 (in/h)	4 (in/h)	5 (in/h)	6 (in/h)
3	680	454	340	272	226
4	1440	960	720	576	480
5	2500	1668	1250	1000	834
6	3840	2560	1920	1536	1280
7	5520	3680	2760	2205	1840
8	7960	5310	3980	3180	2655
10	14 400	9600	7200	5750	4800

DIAMETER OF GUTTER (1⁄2 inch per foot slope)	MAXIMUM RAINFALL RATES BASED ON ROOF AREA (square feet)	Col3	Col4	Col5	Col6
inches	2 (in/h)	3 (in/h)	4 (in/h)	5 (in/h)	6 (in/h)
3	960	640	480	384	320
4	2040	1360	1020	816	680
5	3540	2360	1770	1415	1180
6	5540	3695	2770	2220	1850
7	7800	5200	3900	3120	2600
8	11 200	7460	5600	4480	3730
10	20 000	13 330	10 000	8000	6660

For SI units: 1 inch = 25 mm, [1] ⁄ 16 inch per foot = 5.2 mm/m, 1 inch per hour = 25.4 mm/h, 1 square foot = 0.0929 m [2]

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212 2025 CALIFORNIA PLUMBING CODE

Frequently asked questions

Do I follow the Residential Code or the Plumbing/Mechanical Code for propane piping?

Follow the California Plumbing Code and California Mechanical Code for technical fuel‑gas requirements; the CRC explicitly does not adopt the fuel‑gas chapters and defers to those codes.

What specifically triggers NFPA 58 for an LP installation?

When the LP‑gas piping system will operate at an inlet/operating pressure greater than 20 psi, CPC § 1208.4(8) requires compliance with NFPA 58 for LP‑gas specifics.

Are there material limits I must follow for LP piping in a house?

Yes — CPC § 1208.5 prescribes acceptable piping materials and joining methods (through § 1208.5.6.3). If you can’t find the exact subtext in your copy, confirm via the full CPC or AHJ.

I have spare cylinders stored on my property — any code limits?

Storage and handling of portable LP cylinders are controlled by the Fire Code/NFPA 58; the Fire Code chapter on LP‑gas and related tables set container spacing, overfill rules, and storage limits. Consult CPC/CFC/NFPA 58 for the specific scenario.

What if I can’t find § 1212.11 text in my copy of the CPC?

The file previews I searched list § 1212.11 in the CPC index but the full subsection text did not appear in the retrieved previews. For the authoritative text, consult the full CPC (Title 24, Part 5) or your AHJ.

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Related in the CRC

Residential fueling appliance (RFA) — approvals, capacity and installation limits

Fuel-dispensing hose, breakaway devices and emergency shutoff requirements for LP/CNG

LP‑Gas, CNG & Fueling / Dispensing

California Residential Code

What are the code requirements for LP‑gas installations and residential LP equipment?

What the code requires — plain English

Requirements in detail

Key numeric thresholds and what they mean

Practical takeaways (installation controls)

Exceptions & special cases

Common mistakes

Worked example — residential standby generator fed from an LP tank

Related provisions (quick reference)

Code references

61 LIQUEFIED PETROLEUM GASES

1 ADMINISTRATION

1 ADMINISTRATION

CA RESERVED

CB RESERVED

CC RESERVED

CD RESERVED

CE RESERVED

CF RESERVED

28 MECHANICAL SYSTEMS

29 PLUMBING SYSTEMS

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