CRSC · California Referenced Standards Code

What is Part 12 (California Referenced Standards Code) and what does it cover?

Part 12 of the California Building Standards Code is the collection of state‑agency referenced standards used throughout Title 24; its administrative section **§ 12‑1** is reserved, so you must consult the specific Part 12 chapters and the Part 12 Cross Reference Table to find the applicable standards, adopting agency, and test or recertification requirements.

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

The administrative section for Part 12 is § 12-1 — Administration, which is RESERVED (there are no administrative rules written in that section). § 12-1 therefore places no operative administrative requirements in Part 12 itself.

Part 12 as a whole is the California Referenced Standards Code: a triennial compilation of standards adopted or referenced by State agencies and incorporated into Title 24 (the California Building Standards Code). The Preface and the Part 12 Cross Reference Table explain that Part 12 contains agency-developed referenced standards and identifies where those standards are used in Title 24.

The single most important point: § 12-1 is reserved — Part 12 contains referenced standards (by agency and chapter) but has no separate administration text in § 12-1.

Requirements in detail

The Code does not impose administrative requirements in § 12-1 (it is reserved). Use Part 12 content and the Cross Reference Table to determine which agency standards apply to a subject and where they are applied in Title 24. The sections below summarize what Part 12 contains and how to use it.

What Part 12 contains (high-level)

  • A compilation of California state agency standards and test procedures adopted into Title 24 (the California Building Standards Code).
  • A non-regulatory Part 12 Cross Reference Table that lists each Part 12 standard, the adopting state agency, its subject, and the Title 24 building standard locations where the Part 12 standard is applied.
  • Individual chapters and standards (for example: releasing systems for security bars, fire-resistive tests, detectable warning products, air filters, protective signaling system test procedures, radiation shielding standards, etc.). Each chapter contains its own scope, definitions, test methods, and requirements as adopted by the implementing agency.

How Part 12 is used in practice

  • Part 12 standards are referenced from other Parts of Title 24. The Cross Reference Table tells you which Title 24 provisions rely on a given Part 12 standard. Use the table to find the applicable Part 12 chapter for a given Title 24 requirement.
  • Where a Part 12 chapter prescribes testing, certification, or performance criteria, those criteria are applied by the adopting agency (for example: the State Fire Marshal, Division of the State Architect, Department of Public Health). See the chapter header and the Cross Reference Table for the adopting agency.

Decision‑relevant dimensions (quick reference table)

Decision dimension Typical values / action Code reference
Is there an administrative rule in § 12-1? No — § 12-1 is RESERVED § 12-1
Where do I find which agency standard applies to a Title 24 requirement? Check the Part 12 Cross Reference Table (non‑regulatory listing). Part 12 Cross Reference Table
Who adopts Part 12 standards? State agencies (e.g., SFM, DSA, DPH, etc.) — listed beside each chapter. Cross Reference Table entries (e.g., Chapter 12-3 — SFM).
Example standard with renewal frequency Detectable warning products must be recertified every two years. Sections 12-11A.206 and 12-11B.206
Example durability threshold Significant degradation = maintain at least 90 percent of approved design characteristics. Sections 12-11A.210 and 12-11B.210
Example scope clause Releasing systems for security bars cover manual interior release for emergency escape in dwellings. Sec. 12-3-1.1 (Chapter 12-3)

Notes on content types inside Part 12 chapters

  • Scope and definitions (e.g., what devices or installations are covered).
  • Test methods and test report requirements (what test reports must include). Example: protective signaling systems test report content is specified.
  • Performance thresholds and classification (e.g., spacing tables for electrical parts, durability thresholds, retest intervals).

Exceptions & special cases

  • Because § 12-1 is reserved, there is no centralized administrative exception language in that section — exceptions and waivers, where applicable, will be stated in the individual Part 12 chapters or in the Title 24 sections that reference them. Check the specific chapter or Title 24 provision.
  • Local jurisdictions may adopt more restrictive building standards when reasonably necessary for local conditions; those local findings and adoptions must follow the filing/adoption procedures discussed in the Title 24 Preface (local standards do not automatically apply without appropriate adoption and filing). This is a general rule from the Preface that affects how Part 12 references are applied locally.

Common mistakes

  • Assuming Part 12’s “Administration” section imposes procedural requirements — it does not. § 12-1 is reserved. Always open the specific Part 12 chapter for substantive requirements.
  • Using Part 12 text alone without checking the Cross Reference Table — you may miss which Title 24 provisions incorporate the standard. Always cross-check the Part 12 Cross Reference Table.
  • Treating Part 12 referenced standards as optional: when a Title 24 provision references a Part 12 standard, compliance with that standard is required as part of Title 24 unless the Title 24 provision or the Part 12 chapter explicitly provides an alternative. See chapter headers where adopting agencies and references are identified.

Worked example — applying Part 12 to a real scenario

Scenario: You manufacture detectable warning surfaces for curb ramps and want to sell/install them for projects that must meet Title 24 accessibility provisions.

  1. Confirm which Part 12 chapter applies: detectable warning products and directional surfaces are covered in Chapters 12‑11A and 12‑11B. The Cross Reference Table shows these chapters and the adopting agency (DSA) and links to the Title 24 sections that reference them.
  2. Note the recertification requirement: detectable warning products are to be recertified every two years (no exception or waiver). The Code also requires evaluation by an independent entity and places fees into the Disability Access Account. Use Sections 12-11A.206 / 12-11B.206 for the two‑year recertification and 12-11A.205 / 12-11B.205 for the independent entity requirement.
  3. Durability threshold: the product must not show significant degradation, defined as maintaining at least 90 percent of approved design characteristics for the required period (see Sections 12-11A.210 / 12-11B.210). That gives you a measurable acceptance threshold for life‑cycle testing.
  4. Actionable steps for the manufacturer: (a) obtain evaluation by an approved independent entity, (b) prepare test reports and documentation required by the chapter, (c) plan for recertification every two years and ensure product design maintains ≥90% of characteristics over the service life called out in the chapter.

Related provisions (select Part 12 chapters and sections)

  • § 12-1 — Administration (RESERVED).
  • Sec. 12-3-1.1 — Releasing systems for security bars in dwellings (scope and intent).
  • Sec. 12-7-100 — Fire tests of building construction and materials (fire‑resistive standards scope).
  • Sec. 12-16-201 — Standards for residential excess flow actuated automatic gas shutoff valves (scope; DSA).
  • Sections 12-11A.206 / 12-11B.206 — Two‑year approval / recertification for detectable warning products.
  • Sections 12-11A.210 / 12-11B.210 — Definition of significant degradation (≥90 percent).
  • Sec. 12-13-1551 — Standards for insulating material (scope and types of insulation covered).
  • Sec. 12-72-101 — Test report requirements for protective signaling systems.

Code references

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

  • CRSC § 12-11 High relevance — show source text

    DETECTABLE WARNING PRODUCTS

    Sections 12-11A.203 and 12-11B.203. Must comply with the California Code of Regulations, Title 24.

    DIRECTIONAL SURFACES

    Sections 12-11A.204 and 12-11B.204. Must comply with the California Code of Regulations, Title 24.

    INDEPENDENT ENTITY

    Sections 12-11A.205 and 12-11B.205. Evaluation by an independent entity to confirm the prescriptive and performance standard of detectable warning products or direction surfaces installed after January 1, 2001. An independent entity is a not-for-profit product safety testing and certification organization, dedicated to testing for public safety. An independent entity would operate for the testing, certification and quality assessment of products, systems and services.

    TWO-YEAR APPROVAL

    Sections 12-11A.206 and 12-11B.206. Detectable warning products and directional surfaces are to be recertified every two years without exception or waiver.

    FEE

    Sections 12-11A.207 and 12-11B.207. The Division of the State Architect-Access Compliance may impose a fee on manufacturers of the specified products, to cover the cost of detectable warning products and directional surfaces.

    DISABILITY ACCESS ACCOUNT

    Sections 12-11A.208 and 12-11B.208. The fees received from manufacturers will be placed in the Disability Access Account.

    DETECTABLE WARNING PRODUCTS AND DIRECTIONAL SURFACES

    Sections 12-11A.209 and 12-11B.209. Detectable Warning Products and Directional Surfaces must ensure consistency and uniformity: (a) Shape, (b) Color fastness,

    (c) Conformation, (d) Sound-on-cane acoustic quality, (e) Resilience, and (f) Attachment will not degrade significantly for at least five years.

    SIGNIFICANT DEGRADATION

    Sections 12-11A.210 and 12-11B.210. Significant degradation means that the product maintains at least 90 percent of its approved design characteristics.

    SELECTION OF INDEPENDENT ENTITY

    Sections 12-11A.211 and 12-11B.211. The independent entity selected by the Division of the State Architect-Access Compliance shall be recognized as having appropriate expertise in determining whether products comply with the California Code of Regulations, Title 24.

    Authority: Government Code Sections 4450, 4460 and Health & Safety Code Section 18949.1.

    Reference: Government Code Section 4460.

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    12-13 STANDARDS FOR INSULATING MATERIAL

    (See Part 6, Title 24, CCR)

    DEPARTMENT OF CONSUMER AFFAIRS

    Bureau of Household Goods and Services

  • CRSC § 100.0 High relevance — show source text

    2025 CRSC Reference Standard Code

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    PREFACE

    This document is Part 12 of thirteen parts of the official triennial compilation and publication of the adoptions, amendments and repeal of administrative regulations to California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part is known as the California Referenced Standards Code.

    The California Building Standards Code is published in its entirety every three years by order of the California legislature, with supplements published in intervening years. The California legislature delegated authority to various state agencies, boards, commissions and departments to create building regulations to implement the State’s statutes. These building regulations, or standards, have the same force of law, and take effect 180 days after their publication unless otherwise stipulated. The Califor- nia Building Standards Code applies to occupancies in the State of California as annotated.

    A city, county, or city and county may establish more restrictive building standards reasonably necessary because of local climatic, geological or topographical conditions. Findings of the local condition(s) and the adopted local building standard(s) must generally be filed with the California Building Standards Commission (or other filing if indicated) to become effective, and may not be effective sooner than the effective date of this edition of the California Building Standards Code . Local building standards that were adopted and applicable to previous editions of the California Building Standards Code do not apply to this edition without appropriate adoption and the required filing.

    The referenced standards contained in Part 12 are developed by the state agencies listed herein. The Part 12 Cross Reference Table herein identifies the state agency to which the standard applies, the subject of the standard and the provisions in other parts of Title 24 where the application of the standard is required.

    Should you find publication (e.g., typographical) errors or inconsistencies in this code or wish to offer comments toward improving its format, please address your comments to:

    California Building Standards Commission 2525 Natomas Park Drive, Suite 130 Sacramento, CA 95833-2936

    Phone: (916) 263-0916 Email: cbsc@dgs.ca.gov

    Web page: www.dgs.ca.gov/bsc

    ACKNOWLEDGMENTS

    The 2025 California Building Standards Code (Code) was developed through the outstanding collaborative efforts of the Department of Housing and Community Development, Division of the State Architect, Office of the State Fire Marshal, Department of Health Care Access and Information, California Energy Commission, California Department of Public Health, California State Lands Commission, Board of State and Community Corrections, Department of Water Resources, State Historical Building Safety Board, Department of Consumer Affairs, State Librarian, Department of Food and Agriculture, and the California Building Standards Commission (Commission).

    This collaborative effort included the assistance of the Commission’s Code Advisory Committees and many other volunteers who worked tirelessly to assist the Commission in the production of this Code.

    Governor Gavin Newsom

    Members of the California Building Standards Commission

    Secretary Amy Tong – Chair Rajesh Patel – Vice-Chair

  • CRSC § 12-72 High relevance — show source text

    purposes.

    (c) Control unit. A control unit covered by this standard consists of a unit assembly of electrical parts having provisions for the connection of power-supply circuits routed through the control unit equipment by a prescribed scheme of circuitry; signal initiating circuits extended to separate devices by which the operating parts of the control unit are actuated for signals, and to incorporated or separate devices by which the signals are transmitted or indicated to form a coordinated combination system for definite signaling service.

    TEST REPORTS

    Sec. 12-72-101.

    (a) Test report contents. The report shall include engineering data, and an analysis comparing the design against Section 12-72102 (a) through (u); it shall include wiring, diagrams, operating manuals and photographs as set forth in Section 12-72-102 (a), Items 5 and 6; it shall set forth the tests performed in accordance with Sections 12-72-103 (a) through (g) and the results thereof; and shall verify the correctness of the electrical rating required by Section 12-72-107.

    (b) Listed devices. Electrical wiring, material, devices, combination of devices, fittings, appliances and equipment which have been tested and listed by an approved listing agency for the intended purpose and use need not be individually retested.

    The report shall include the catalog number or other readily identifiable marking, the name of the approved listing agency, the laboratory test report number and date. Such individually tested and listed component parts and devices when installed in combination with other devices in a control unit or in a circuit extended from such control unit shall be subjected to the performance standard tests to determine its suitability for use in combination with other component parts, devices, circuits or equipment.

    (c) Listed control units. Control units which by their design are intended to fully comply with the Standard for the Installation, Maintenance and Use of Proprietary, Auxiliary, Remote Station and Local Protective Association may be investigated and tested in accordance with the Standards for Safety established by Underwriters’ Laboratories, Inc., U.L. 864, provided such investigation, test and report incorporates the provisions of the California Electrical Code.

    (d) Rejection for cause. Compliance with these standards will not necessarily mean approval and listing, if, when examined and tested, it is found to have other features which may impair the result intended by these regulations. Unusual constructions may require application of additional performance tests. The State Fire Marshal may refuse to approve any item for cause.

    (e) Systems only. The standard applies to protective signaling systems as defined in the California Electrical Code, and systems or systems components for which application for approval and listing has been filed under the provisions of the California Electrical Code.

    This standard does not cover manual stations, automatic detectors, automatic transmitters or other actuating devices; nor does it cover separately listed bells, registers or other indicating devices which are not provided as a part of the control unit or matched against the output of sound-reproducing equipment.

    (f) Differing constructions. A control unit having materials or forms of construction differing from this standard may be investigated and tested according to the intent of this standard, and if found to be substantially equivalent may be given recognition for approval and listing. The office of the State Fire Marshal shall be consulted for general requirements and performance standards.

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    PROTECTIVE SIGNALING SYSTEMS

    GENERAL

    Sec. 12-72-102.

    (a) **Investigation—Report.

  • CRSC § 12-72 High relevance — show source text

    (t) Spacings.

    1. A detector shall provide reliably maintained spacings between uninsulated live parts and dead metal parts and between uninsulated live parts of opposite polarity. The spacings shall be not less than those indicated in Table 12-72-3E.

    2. The spacing between an uninsulated live part and a wall or cover of a metal enclosure, a fitting for conduit or metal-clad cable, and any dead-metal part shall be not less than that indicated in Table 12-72-3E.

    3. The through air and over surface spacings at an individual component part are to be judged on the basis of the volt-amperes used and controlled by the individual component. However, the spacing from one component to another, and from any component to the enclosure or to other uninsulated dead metal parts excluding the component mounting surface, shall be judged on the basis of the maximum voltage and total volt-ampere rating of all components in the enclosure.

    4. The spacing requirements in Table 12-72-3E do not apply to the inherent spacings inside motors, except at wiring terminals, or to the inherent spacings of a component which is provided as part of the detector. Such spacings are judged on the basis of the requirements for the component. The electrical clearance resulting from the assembly of a component into the complete device, including clearances to dead metal or enclosures, shall be those indicated in Table 12-72-3E.

    5. The “to walls of enclosure” spacings are not to be applied to an individual enclosure of a component part within an outer enclosure.

    6. An insulating liner or barrier of vulcanized fiber, varnished cloth, mica, phenolic composition or similar material employed where spacings would otherwise be insufficient, shall be not less than 0.028 inch (0.7 mm) in thickness, except that a liner or barrier not less than 0.013 inch (0.3 mm) in thickness may be used in conjunction with an air spacing of not less than onehalf of the through air spacing required. The liner shall be located so that it will not be affected adversely by arcing.

    7. Insulating material having a thickness less than that specified in Item 6 may be used, if upon investigation, it is found to be adequate for the particular application.

    8. Enamel-insulated wire is considered to be a bare current-carrying part in determining compliance of a device with the spacing requirements, but enamel is acceptable as turn-to-turn insulation in coils.

    PERFORMANCE

    Sec. 12-72-303.

    (a) General.

    1. Unless otherwise specified, detectors representative of production are to be used for each of the following tests.

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    PROTECTIVE SIGNALING SYSTEMS

    1. The devices employed for testing are to be those specified by the wiring diagram of the detector, except that substitute devices may be used if they produce functions and load conditions equivalent to those obtained with the devices intended to be used with the detector in service.

    2. Data on detector components, e.g., capacitors, resistors (other than carbon or wire wound), solid state devices, etc., shall be provided by the manufacturer for evaluation of the reliability of the components for the intended application. If a MilSpec. is referenced, a copy of the specification is to be provided for review.

  • CRSC § 12-72 High relevance — show source text

    |SFM|| |Chapter 12-72-2|Protective signaling systems. Single-and
    multiple-station fire alarm devices
    mechanically operated type.|SFM|| |Chapter 12-72-3|Protective signaling systems. Smoke detectors,
    combustion products type.|SFM||

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    12-1 ADMINISTRATION

    RESERVED

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    12-3 RELEASING SYSTEMS FOR SECURITY BARS IN DWELLINGS

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

    INTRODUCTION

    SECTION 12-3-1—SCOPE

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

    12-3-1.2 These requirements only cover the ability of the releasing system to be manually activated from the interior of a dwelling unit by an occupant to affect an escape through the protected opening.

    12-3-1.3 These requirements cover releasing systems intended for use on the interior side of doors or windows in all climatic locations.

    12-3-1.4 These requirements do not evaluate the ability of the releasing system or obstructions to resist an external forced entry attack.

    12-3-1.5 These requirements do not evaluate the ability of the releasing system or obstructions to be opened or removed from the exterior of the residential dwelling unit by emergency response personnel during rescue operations.

    12-3-1.6 Products covered by these requirements are intended for installation in dwelling units to protect door and window openings that are designated by the California Building Standards Code to be used as the secondary means of escape from the living area.

    12-3-1.7 Products covered by these requirements are not intended to be used to protect doors in means of egress path for nonresidential occupancies, the common egress path of multifamily residential dwelling units or the primary means of egress path in a single-family dwelling unit.

    12-3-1.8 These requirements do not cover window guards or fall prevention devices that are intended to prevent falls from upper story windows.

    12-3-1.9 These requirements do not apply to storm doors and windows or light duty screens used for insect control.

  • CRSC § 9.3 High relevance — show source text

    Ventilators having plastic covers shall not exceed 100 square feet (9.3 m [2] ) in area.

    (k) Fail-safe design. The ventilator cover, lid, sidelight or shutter shall be designed to fail safe in the event of fire and shall not fall back over the opening. It shall require a manual operation to reclose the cover, lid, sidelight or shutter.

    (l) Opening counterforce.

    1. Gravity-type ventilators shall have securely attached weights to provide a continuous excess counterweight of not less than 30 pounds throughout the opening arc of the lid or sidelight.
    2. Devices used to open ventilators shall be designed to exert a continuous opening force, at all times normal to the lid of not less than 30 pounds. When springs are used they shall not be stressed to more than 50 percent of their capacity when the lid is in a closed position.
    3. Louvered-type shutters intended for installation in gables shall be of the gravity type. The excess counter-weight shall be not less than 2 pounds per square foot of gross shutter area.

    (m) Automatic heat or smoke detectors shall be placed in the underside of the ventilator at or above the roof line.

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    STAGE AND PLATFORMS

    (n) Test procedure.

    1. Ventilators and shutters shall be mounted for the tests in a manner simulating their intended use. The lid, cover or sidelight shall be held in a closed position by a fusible link, or an automatic heat or smoke actuated detector or combination thereof, and the fusible link or detector controls.

    2. The opening counterforce shall be measured at the geometric center of the lid, cover or sidelight. The automatic detector shall be released and measurements of the counterforce taken at various points throughout the opening arc but at not less than at 30 inches (762 mm) and at 60 inches (1524 mm) from the plane of the lid when in a closed position, and at a point past 90 inches (2286 mm) from the horizontal.

    3. The opening force of gable-type shutter ventilators shall be measured from the top of the operating bar.

    (o) Test report. The test report shall include but is not limited to the following:

    1. A detailed description of the unit and its intended operation.

    2. Engineering data and shop drawings. Shop drawings shall bear the seal or stamp of a registered or licensed engineer or architect attesting to the structural integrity of the ventilator as it relates to the provisions of Section 12-4-100 (f).

    3. Photographs [4 inches by 5 inches (101 mm by 127 mm) or larger] of the unit with markings identifying component parts of the unit.

    4. Description and results of the tests performed.

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    12-7-1 FIRE-RESISTIVE STANDARDS

    FIRE TESTS OF BUILDING CONSTRUCTION AND MATERIALS

    STANDARD 12-7-1

    STATE FIRE MARSHAL

    SCOPE

    Sec. 12-7-100.

  • CRSC § 12-72 Medium relevance — show source text

    (d) Rejection for cause. Compliance with these standards will not necessarily mean approval and listing, if, when examined and tested, it is found to have other features which may impair the result intended by these regulations. Unusual constructions may require application of additional performance tests. The State Fire Marshal may refuse to approve any item for cause.

    (e) Systems only. The standard applies to protective signaling systems as defined in the California Electrical Code, and systems or systems components for which application for approval and listing has been filed under the provisions of the California Electrical Code.

    This standard does not cover manual stations, automatic detectors, automatic transmitters or other actuating devices; nor does it cover separately listed bells, registers or other indicating devices which are not provided as a part of the control unit or matched against the output of sound-reproducing equipment.

    (f) Differing constructions. A control unit having materials or forms of construction differing from this standard may be investigated and tested according to the intent of this standard, and if found to be substantially equivalent may be given recognition for approval and listing. The office of the State Fire Marshal shall be consulted for general requirements and performance standards.

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    PROTECTIVE SIGNALING SYSTEMS

    GENERAL

    Sec. 12-72-102.

    (a) Investigation—Report.

    1. A control unit or combination signaling system shall be so designed and constructed as to be practical, reliable and sufficiently durable for its intended installation and use. It shall be suitable for use with acceptable actuating and indicating devices which have been found by investigation to be suitable for use with the control unit or combination signaling system. It shall permit its application in conformity with the regulations set forth in the California Electrical Code.
    2. The scheme of electrical or electronic circuiting of a control unit or combination signaling system shall provide for the degree of electrical supervision required by the California Electrical Code, and when required, shall ensure emergency operation in the presence of a fault condition.
    3. Attachment plugs, bells, circuit-breakers, cords, fuse-holders, fuses, lampholders, receptacles, transformers, switches, wires, etc., provided as a part of a control unit or combination signaling system shall be investigated and judged under the requirements established by the California Electrical Code, for such devices and also with respect to their suitability for the particular application.
    4. Amplifiers used in the fire-protective signaling circuits of combination systems shall be tested in accordance with UL, Inc. Standard 813 (Second Edition 1954, amended 1966 and 1967), Sound Recording and Reproducing Equipment. The exchange or replacement of amplifiers from those originally tested with a combination system shall be tested in accordance with UL, Inc. Standard 813 and evaluated in accordance with this standard to determine their suitability for use with the combination system.
    5. The report of investigation shall include schematic wiring diagrams tracing the electrical or electronic circuits in their normally supervised and operating condition. Contacts of operating devices shall be shown in the normally supervised position with operating and supervisory power supplied to the equipment.
    6. The report of investigation shall include photographs of the equipment with markings identifying the component parts. Operating and maintenance manuals shall be included with each control unit or combination signaling system and shall be attached to the test report and certification.
    7. The report of investigation shall include an itemized list of optional equipment that has, by test, been determined as not required to
  • CRSC § 42.4 Medium relevance — show source text
    1. Trouble signal. A visual or audible signal intended to indicate a fault or trouble condition, such as an open or ground fault, occurring in the device or connected wiring.
    2. Voltage classification. A. Low voltage. A circuit classified as low voltage is one involving a potential of not more than 30 volts alternating current (42.4 peak) or direct current, and supplied from a circuit whose power is limited to a maximum of 100 volt

    amperes. B. High voltage. A circuit classified as high voltage is one having circuit characteristics in excess of those of a low-voltage circuit.

    TEST REPORTS

    Sec. 12-72-301.

    (a) The report shall include engineering data, and an analysis comparing the design against Sections 12-72-302 (a) through 12-72302 (t); it shall include wiring diagrams, operating manuals and photographs; it shall set forth the tests performed in accordance with this standard and the results thereof and shall verify the correctness of the electrical rating.

    (b) Listed components. Electrical wiring, material, devices, combination of devices, fittings, appliances and equipment which have been tested and listed by an approved listing agency for the intended purpose and use need not be individually retested.

    The report shall include the catalog number or other readily identifiable marking; the name of the approved listing agency, the laboratory test report number and date. Such individually tested and listed component parts and devices shall be subjected to the performance standard tests to determine its suitability for use in combination with other component parts, devices, circuits or equipment.

    (c) Listed detectors. Detectors which have been tested to any other acceptable test standard may be evaluated provided such test incorporates all features of this standard.

    (d) Rejection for cause. Compliance with these standards will not necessarily mean approval and listing, if when examined and tested, it is found to have other features which may impair the result intended by these regulations. Unusual constructions may require application of additional performance tests. The State Fire Marshal may refuse to approve any item for cause. (See the Cali- fornia Electrical Code .)

    (e) Smoke detectors only.

    1. A combustion products detector, as covered by these requirements consists of an assembly of electrical components arranged to detect one or more products of combustion. The products of combustion may consist of but are not necessarily

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    PROTECTIVE SIGNALING SYSTEMS

    limited to gaseous combustion products, water vapor and visible as well as invisible smoke particles. The detector includes provision for the connection to a source of power, signaling and optional remote control circuits. 2. These requirements cover the following types of detectors: A. Detectors intended for open area protection, intended for connection to a compatible power supply or control unit for operation as part of a fire alarm system. B. Detectors intended solely for control of releasing devices such as electromagnetic door holders, fire dampers, etc.

    C. Detectors suitable for Items A and B above.

    1. This standard does not cover the following: A. Detectors for monitoring the smoke density within flues or stacks.

    B. Duct detectors.

  • CRSC § 12-11 Medium relevance — show source text

    (c) Conformation, (d) Sound-on-cane acoustic quality, (e) Resilience, and (f) Attachment will not degrade significantly for at least five years.

    SIGNIFICANT DEGRADATION

    Sections 12-11A.210 and 12-11B.210. Significant degradation means that the product maintains at least 90 percent of its approved design characteristics.

    SELECTION OF INDEPENDENT ENTITY

    Sections 12-11A.211 and 12-11B.211. The independent entity selected by the Division of the State Architect-Access Compliance shall be recognized as having appropriate expertise in determining whether products comply with the California Code of Regulations, Title 24.

    Authority: Government Code Sections 4450, 4460 and Health & Safety Code Section 18949.1.

    Reference: Government Code Section 4460.

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    12-13 STANDARDS FOR INSULATING MATERIAL

    (See Part 6, Title 24, CCR)

    DEPARTMENT OF CONSUMER AFFAIRS

    Bureau of Household Goods and Services

    ARTICLE 3. STANDARDS FOR INSULATING MATERIAL

    APPLICATION AND SCOPE

    Sec. 12-13-1551.

    (a) This article establishes standards governing the quality of insulation sold within the state after September 22, 1981, including those properties which affect the safety and thermal performance of insulation during application and in the use intended.

    (b) The provisions of this article shall apply only to the following types of insulating material:

    1. Aluminum foil (reflective foil);

    2. Cellular glass (board form);

    3. Cellulose fiber (loose fill and spray applied);

    4. Mineral aggregate (board form);

    5. Mineral fiber (blankets, board form, loose fill);

    6. Perlite (loose fill);

    7. Polystyrene (board form, molded and extruded);

    8. Polyurethane (board form and field applied);

    9. Polyisocyanurate (board form and field applied);

    10. Urea formaldehyde foam (field applied);

    11. Vermiculite (loose fill).

    (c) The provisions of this article shall apply to the sale of insulating material within the state. The provisions of this article shall not apply to insulating material manufactured in California, but sold outside the state, nor to insulating material manufactured outside California and sold wholesale in California for final retail sale outside the state. For the purpose of this article, the sale of a building or an appliance which contains installed insulating material is not considered the sale of the insulating material.

    (d) Any type of insulating material not listed in subsection (b) may be sold within California notwithstanding any other provision of this article.

    Authority: Sections 25920 and 25922, Public Resources Code.

    Reference: Sections 25910, 25920, 25921 and 25922, Public Resources Code.

  • CRSC § 12-3 Medium relevance — show source text

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    PART 12 CROSS REFERENCE TABLE

    (Cross reference table is nonregulatory, intended only as an aid to the code user.)

    PART 12
    STANDARD    		 SUBJECT ADOPTING
    AGENCY    		 ASSOCIATED TITLE 24
    BUILDING STANDARD
    Chapter 12-3 Releasing systems for security bars in
    dwellings    		 SFM Part 2, Sections 1031.2.1, 1031.6, 1032.7
    Part 2.5, Sections R319.1.1 and R319.4.4
    Part 9, Sections 1031.2.1, 1031.6, 1032.7
    Appendix 4 Section 452.1.5 and Title 19 provisions 4.1, 4.2, 4.3,
    4.4, 4.5, 4.6 reprinted in Part 9
    Part 10, Section 505.4
    Chapter 12-4A Laboratory animal quarters standards DPH Part 2, Section 1236
    Chapter 12-4-1 Stage and Platforms SFM Part 2, Sections 410.2.7, 410.2.7.1, 410.2.7.2
    Part 9, Sections 105.6.51, 4809
    Chapter 12-7-1 Fire-resistive standards. Fire tests of building
    construction and materials.    		 SFM Part 2, Section 703
    Chapter 12-7-2 Reserved
    Chapter 12-7-3 Fire-resistive standards.
    Fire testing furnaces.    		 SFM Part 9, Section 3001
    Chapter 12-7-4 Fire-resistive standards.
    Fire door assembly tests.    		 SFM Part 2, Section 716
    Chapter 12-7-5 Fire-resistive standards. Interior
    finish of decorative material.    		 SFM Part 2, Chapter 8
    Part 9, Chapter 8
    Chapter 12-7A Materials and construction methods for
    exterior wildfire exposure    		 SFM Part 7, Chapter 5
    Chapter 12-8-1 Fire-resistive standards for fire protection SFM Part 2, Sections 408.14 and 435.6.2
    Appendix 12-8-1A Calculation of the total rate of heat and carbon
    monoxide or carbon dioxide production    		 SFM
    Appendix 12-8-1B Guide to mounting techniques for wall and
    ceiling interior finish material    		 SFM
    Chapter 12-10-1 Exits. Power-operated exit doors. SFM Part 2, Sections 408.4.2, 1010.1.4.2, 1010.1.9.1
    Chapter 12-10-2 Exits. Single-point latching or locking devices. SFM Part 2, Section 1010.2.2
    Part 9, Section 1010.2.2
    Chapter 12-10-3 Exits. Emergency exit and panic hardware.
  • CRSC § 12-16 Medium relevance — show source text

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

    DIVISION OF THE STATE ARCHITECT

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

    DIVISION 1—CONSTRUCTION

    SCOPE

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

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

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    12-31C RADIATION SHIELDING STANDARDS

    STANDARD 12-31C-1

    DEPARTMENT OF HEALTH SERVICES

    Authority: Sections 102, 208 and 25811.

    Reference: Sections 102, 208 and 436.5.

    ALL HEALING ARTS X-RAY INSTALLATIONS

    Sec. 12-31C-101. All radiation shielding barriers in rooms and enclosures housing radiation machines shall comply with the mandatory standards and appendices in Report No. 35, “Dental X-RAY Protection”; Report 49, “Structural Shielding Design and Evaluation for Medical use of X-rays and Gamma Rays of Energies up to 10 MeV”; and Report No. 51, “Radiation Protection Design Guidelines for 0.1-100 MeV Particle Accelerator Facilities.” Published by the National Council on Radiation Protection and Measurements, 7910 Woodmont Avenue, Bethesda, Maryland 20814.

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    12-71 AIR FILTERS

    STANDARD 12-71-1

    STATE FIRE MARSHAL

    DESCRIPTION OF TEST APPARATUS, METHOD AND CLASSIFICATION REQUIREMENTS FOR AIR FILTERS

    Sec. 12-71-100.

    (a) Test apparatus.

    1. The test duct, made of M.S. gage galvanized sheet metal reinforced with angle irons, is 21 inches square (13 548 mm [2] ) and 13 [1] / 2 feet (4114 mm) long.
  • CRSC § 12-16 Medium relevance — show source text

    12-16-1 ENGINEERING REGULATIONS—QUALITY AND

    DESIGN OF THE MATERIALS OF CONSTRUCTION

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

    DIVISION OF THE STATE ARCHITECT

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

    DIVISION 1—CONSTRUCTION

    SCOPE

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

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

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    12-16-2 ENGINEERING REGULATIONS—QUALITY AND

    DESIGN OF THE MATERIALS OF CONSTRUCTION

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

    DIVISION OF THE STATE ARCHITECT

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

    DIVISION 1—CONSTRUCTION

    SCOPE

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

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

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    12-31C RADIATION SHIELDING STANDARDS

    STANDARD 12-31C-1

    DEPARTMENT OF HEALTH SERVICES

Frequently asked questions

Why does § 12-1 say “Reserved”?

Because the Part‑level administrative section (Administration) contains no active administrative rules for this edition of the CRSC — substantive requirements are in the individual Part 12 chapters. § 12-1 is explicitly marked RESERVED.

If § 12-1 is reserved, where do I find enforceable rules?

Enforceable rules are in the individual Part 12 chapters (e.g., 12‑3, 12‑7, 12‑11A/11B, etc.) and in the Title 24 provisions that reference those chapters. Use the Part 12 Cross Reference Table to locate the right chapter.

Are Part 12 standards optional?

No — when a Title 24 provision references a Part 12 standard, that standard becomes part of the Building Standards Code for the relevant subject unless the Title 24 provision or Part 12 chapter provides an alternative. Check the referencing Title 24 section.

How do I tell which state agency adopted a Part 12 standard?

The Part 12 Cross Reference Table lists the adopting agency next to each chapter/standard. For example, releasing systems for security bars are adopted by the State Fire Marshal (SFM).

Where can I find test report requirements for a Part 12 standard?

Open the specific Part 12 chapter — many chapters include a “Test report” or “Investigation—Report” section describing required contents (for example, Sec. 12‑72‑101 and Sec. 12‑72‑301 for protective signaling systems).

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