Chapter 1 — GENERAL CODE PROVISIONS

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

Adopt the entire UMC chapter as amended, state-amended sections are listed below: If there is an “X” under a particular state agency’s acronym in this row, it means that a particular state agency has adopted the entire model code chapter, with state amendments.

Each state-amended section that the agency has added to that particular chapter is listed. There will be an “X” in the column, by that particular section, under the agency’s acronym, as well as an “X” by each section that the agency has adopted.

Example:

CALIFORNIA MECHANICAL CODE – MATRIX ADOPTION TABLE

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

2022 CALIFORNIA MECHANICAL CODE vii

Adopt only those sections which are listed below: If there is an “X” under a particular state agency’s acronym in this row, it means that particular state agency is adopting only specific model code or state-amended sections within this chapter. There will be an “X” in the column under the agency’s acronym, as well as an “X” by each section that the agency has adopted.

Example:

CALIFORNIA MECHANICAL CODE – MATRIX ADOPTION TABLE

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

viii 2022 CALIFORNIA MECHANICAL CODE

[BSC]

>

HOW TO DISTINGUISH MODEL CODE LANGUAGE

FROM CALIFORNIA AMENDMENTS

To distinguish between model code language and incorporated California Amendments, including exclusive California standards, California amendments will appear in italics font print.

Symbols in the margins indicate the status of code changes as follows:

This symbol identifies which State agency(s) by its “acronym” that has amended a section of the model code. For a complete listing of State agency acronyms, see the Application Section within Chapter 1, Division I.

This symbol indicates that a change has been made to a California amendment.

This symbol indicates that a section, paragraph, or table has been revised or relocated within IAPMO model code language.

This symbol indicates deletion of California language.

This symbol indicates where an entire section, paragraph, or table has been deleted from IAPMO model code language.

Revision Markings A double right angle ( « ) in the margin indicates that the text or a table has been relocated within the code. The table found on page xx points out the relocations in the 2021 edition of the Uniform Mechanical Code.

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

A reference in brackets [ ] following a section or paragraph indicates material that has been extracted from another document. 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.

2022 CALIFORNIA MECHANICAL CODE ix

x

Important Notices and Disclaimers The 2021 edition of the Uniform Mechanical Code is developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on mechanical issues. While the International Association of Plumbing and Mechanical Officials (IAPMO) administers the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in its codes and standards.

IAPMO disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. IAPMO also makes no guarantee or warranty as to the accuracy or completeness of any information published herein.

In issuing and making this document available, IAPMO is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is IAPMO undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.

dertaking to render professional or other services for or on behalf of any person or entity. Nor is IAPMO undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.

Updating IAPMO Codes Users of IAPMO codes should be aware that IAPMO codes may be amended from time to time through the issuance of Tentative Interim Amendments or corrected by Errata. IAPMO codes consist of the current edition of the document together with any Tentative Interim Amendment and any Errata in effect.

In order to determine whether an IAPMO code has been amended through the issuance of Tentative Interim Amendments or corrected by Errata, please visit the IAPMO Group codes information pages on IAPMO’s website (www.iapmo.org). The codes information pages provide a list of IAPMO codes with up-to-date, specific information including any issued Tentative Interim Amendments and Errata.

To access the codes information pages for a specific code, go to http://codes.iapmo.org to select from the list of IAPMO codes. For Tentative Interim Amendments, go to the standard council decisions. For Errata, select the archived revision information.

2022 CALIFORNIA MECHANICAL CODE

FOREWORD

Origin and Development The industry has long recognized the advantages of a statewide adopted mechanical code. The first edition of the Uniform Mechanical Code ^® (UMC ^® ) was adopted by IAPMO in 1967. The widespread use of this code over the past five decades by jurisdictions throughout the United States and internationally is testament to its merit.

Publishing of the 2003 Uniform Mechanical Code was a significant milestone because it was the first time in the history of the United States a mechanical code was developed through a true consensus process. The 2021 edition represents the most current approaches in the mechanical field and is the seventh edition developed under the ANSI consensus process. Contributions to the content of this code consists of diverse interests as consumers, enforcing authorities, installers/maintainers, labor, manufacturers, research/standards/testing laboratories, special experts, and users.

The Uniform Mechanical Code provides consumers with complete requirements for the installation and maintenance of heating, ventilating, cooling, and refrigeration systems, while, at the same time, allowing latitude for innovation and new technologies. The public at large is invited and encouraged to take part in IAPMO’s open consensus code development process. This code is updated every three years. The Uniform Mechanical Code is dedicated to all those who, in working to achieve “the ultimate mechanical code,” have unselfishly devoted their time, effort, and personal funds to create and maintain this, the finest mechanical code in existence today.

The Uniform Mechanical 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. Public and Committee 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 is 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 2021 Uniform Mechanical Code is supported by the 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 UMC, 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.

2022 CALIFORNIA MECHANICAL CODE xi

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 PHCC-NA – PO Box 6808 • Falls Church, VA 22040-6808 • (800) 533-7694 RPA – 18927 Hickory Creek Drive, Suite 220 • Mokena, IL 60448 • (877) 427-6601 UA – Three Park Place • Annapolis, MD 21401 • (410) 269-2000 WPC – World Plumbing Council Secretariat, Auf der Mauer 11 • Postfach CH 8021 • Zurich

Switzerland • www.WorldPlumbing.org

Adoption The Uniform Mechanical 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 Mechanical Code on page xi provides key components, regulations and resolutions.

Revision Markings Solid vertical lines in the margins indicate a technical change from the requirements of the

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 or a table has been relocated within the code. The table found on page xiii points out the relocations in the 2021 edition of the Uniform Mechanical Code .

TIA TIA TIA TIA

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

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 2022 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:

2022 CALIFORNIA MECHANICAL CODE xiii

FORMAT OF THE UNIFORM MECHANICAL CODE

The following is a summary of the scope and intent of the provisions addressed within the chapters and appendices of the Uniform Mechanical Code :

Chapter 1 Administration. Chapter 1 regulates the application, enforcement, and administration of subsequent requirements of the code. As well as establishing the scope of the code, this chapter is concerned with enforcing the requirements contained in the body of the code. A mechanical code, as with any other code, is intended to be adopted as a legally enforceable document to safeguard health, safety, property and public welfare. The code cannot be effective without satisfactory provisions for its administration and enforcement. The Authority Having Jurisdiction is to review the proposed and completed work and to decide whether a mechanical system conforms to the code requirements. As a public servant, the Authority Having Jurisdiction enforces the code in an unbiased, proper manner. The design professional is responsible for the design of a safe mechanical system. The contractor is responsible for installing the system in accordance with the plans.

Chapter 2 Definitions. To maintain consistency and encourage the use of common terminology, Chapter 2 establishes definitions to provide clarity of terms and promote the use of a common language throughout the code. Understanding definitions within the context of their application enables greater collaboration, efficiency, standardization and interpretation in applying and enforcing terms used throughout the code. Codes are technical documents, and every term can impact the meaning of the code text. Terms not defined have a normally accepted meaning.

d promote the use of a common language throughout the code. Understanding definitions within the context of their application enables greater collaboration, efficiency, standardization and interpretation in applying and enforcing terms used throughout the code. Codes are technical documents, and every term can impact the meaning of the code text. Terms not defined have a normally accepted meaning.

Chapter 3 General Regulations. Chapter 3 regulates the general requirements, not specific to other chapters, for installing mechanical systems. Many regulations are not specific mechanical requirements, but relate to the overall mechanical system. This chapter contains safety requirements for appliance location and installation, appliance and system access, condensate disposal, and clearances to combustibles, and return or outside air used in mechanical systems. Listing method of approval, based on applicable nationally recognized standards, for the safe and proper installation of mechanical systems is essential to ensure protection of public health, safety, and welfare. The safety requirements provide protection for piping, material, and structures, with provisions for installation practices, removing stress and strain of the pipe, sleeving, and hanger support. The building’s structural stability is protected by the regulations for cutting and notching of structural members.

Chapter 4 Ventilation Air. Chapter 4 regulates the minimum requirements for ventilation air supply, exhaust, and makeup air for spaces within a building. Building ventilation is one important factor affecting the relationship between airborne transmission of respiratory infections and the health and productivity of workers. Ventilation air may be composed of mechanical or natural ventilation, infiltration, recirculated air, transfer air, or a suitable combination of that. Providing a comfortable and healthy indoor environment for building occupants is of primary concern. When considering how much ventilation should be supplied, typical and unusual significant sources of indoor pollution need to be controlled. Areas such as kitchens, bathrooms, and laundries are all built to allow specific functions. These spaces produce pollutants such as moisture, odors, volatile organic compounds, particles, or combustion byproducts. The purpose of local exhaust is to control concentrates of these pollutants in the room into which they were emitted in and to reduce the spread of the pollutants into other parts of the occupancy. Local exhaust ventilation is the source control for pollution that is expected in certain rooms. Using local exhaust to extract contaminants before they can mix with the indoor environment is essential.

The purpose of local exhaust is to control concentrates of these pollutants in the room into which they were emitted in and to reduce the spread of the pollutants into other parts of the occupancy. Local exhaust ventilation is the source control for pollution that is expected in certain rooms. Using local exhaust to extract contaminants before they can mix with the indoor environment is essential.

Chapter 5 Exhaust Systems. Chapter 5 regulates the minimum requirements for exhaust systems. Chapter 5 contains two parts: part I provides exhaust requirements for environmental air ducts and product conveying ducts; part II provides exhaust requirements for commercial kitchens. Environmental air ducts include exhaust ducts used for transporting the air from domestic kitchens, bathrooms, and clothes dryers. Systems that carry nonabrasive exhaust, such as smoke, moderately abrasives such as sawdust, and high abrasives such as manganese or acid vapors use product-conveying ducts. Part II provides the minimum fire safety requirements related to the design, installation, inspection, and maintenance of grease-type operations, such as cooking, for both fuel-gas and solid fuel. Cooking produces a significant amount of smoke, fumes, vapors, heat, and other pollutants. Therefore, acceptable kitchen ventilation is necessary to provide the occupants protection from smoke, unpleasant odors, pollutants, dangerous gases, and to prevent fires from the build-up of grease. There are two types of exhaust hoods (Type I and Type II) used in commercial kitchen applications. Type I hoods are intended to be installed above equipment or

xiv 2022 CALIFORNIA MECHANICAL CODE

FORMAT OF THE UNIFORM MECHANICAL CODE

appliances that generate grease or smoke. Type II hoods are intended to be installed above equipment or dishwashers that generate steam, heat, or products of combustion, or where grease or smoke is not present. Type II hood exhaust system requirements are addressed in Section 519.0.

Chapter 6 Duct Systems. Chapter 6 regulates requirements for ducts and plenums that are portions of a heating, cooling, absorption or evaporative cooling, or exhaust system. This chapter contains material and installation requirements for metal, gypsum, factory-made, flexible, and plastic ducts. It also contains fire protection requirements, smoke dampers, and automatic shutoff for the building’s air distribution system.

Chapter 7 Combustion Air. Chapter 7 regulates combustion air requirements for the ventilation and dilution of flue gases for appliances installed in buildings. It applies to fuel-gas appliances except for direct vent appliances and clothes dryers. Chapter 5 provides makeup air for clothes dryers. Chapter 7 provides acceptable methods for supplying satisfactory combustion air to ensure proper combustion. Combustion air can be supplied by using indoor combustion air or by introducing the air from the outdoors.

e gases for appliances installed in buildings. It applies to fuel-gas appliances except for direct vent appliances and clothes dryers. Chapter 5 provides makeup air for clothes dryers. Chapter 7 provides acceptable methods for supplying satisfactory combustion air to ensure proper combustion. Combustion air can be supplied by using indoor combustion air or by introducing the air from the outdoors.

Combustion is the rapid oxidation of fuel to release energy. The oxygen required to release the energy from the fuel normally comes from the air. Incomplete combustion of fuel occurs when inadequate oxygen is provided to the appliance. Combustion is needed to provide ventilation cooling for the casing and internal controls. When a lack of oxygen occurs, some of the carbon is not oxidized, and carbon monoxide forms.

Chapter 8 Chimneys and Vents. Chapter 8 regulates the installation, design, and construction of venting systems for fuel-burning appliances. The provisions addressed within this chapter follow procedures an installer would use to design or evaluate a venting system. Many requirements apply to the design and construction of venting systems, chimneys, installation of gas vents, and the sizing of venting system for a Category I appliance. Sizing venting systems require rigorous engineering calculations. However, the venting sizing requirements and sizing tables in this chapter already perform the calculations for the benefit of the end user.

Combustion appliances produce products of incomplete combustion, including potentially harmful carbon monoxide (CO). It is desirable to vent these products to the outdoors. Although the gas is clean-burning fuel, the products of combustion must not be allowed to collect within a building.

Chapter 9 Installation of Specific Appliances. Chapter 9 regulates the minimum requirements for the design, construction and installation of specific appliances. The provisions address the minimum requirements for gas-fired appliances, oil-fired appliances, wood-fired appliances, and electric-type appliances. In addition to the requirements of this chapter, appliances are also required to comply with the general requirements of Chapter 3.

Chapter 10 Boilers and Pressure Vessels. Chapter 10 regulates the construction, installation, operation, repair, and alteration of boilers and pressure vessels. A lowpressure boiler provides steam at a pressure that does not exceed 15 psig, a gauge pressure more than 160 psi (1103 kPa) or heats water to a temperature more than 250°F (121°C). Potable water heaters are free from the requirements of Chapter 10 as they are within the scope of the Uniform Plumbing Code (UPC).

Pressure vessels store large amounts of energy and must comply with ASME Boiler and Pressure Vessel Code (BPVC) Section VIII. The stored energy must be contained to prevent disastrous failures. Boilers must comply with ASME BPVC Section I, ASME BPVC Section IV, or NFPA 85. Installing a safety relief valve and expansion tank prevents pressures in the tank from exceeding the design threshold.

Chapter 11 Refrigeration. Chapter 11 regulates the design, installation, and construction requirements of refrigeration systems and the installation and construction of cooling towers. Refrigeration is a method used for achieving heat transfer to cool spaces. Refrigerants are the most common medium used to transfer the heat energy from the low-temperature level to the high-temperature level. Table 1102.3 lists the most commonly used refrigerants and is labeled by a number. The concentration limits provided in Table 1102.3 are useful for the quantity of refrigerant required to cool a volume of space safely.

2022 CALIFORNIA MECHANICAL CODE xv

FORMAT OF THE UNIFORM MECHANICAL CODE

A major milestone reached in the industry was the introduction of lower flammability refrigerants such as A2L and B2L. The industry’s concerns to address lower Global Warming Potential (GWP) refrigerants led to the development of these lower flammability refrigerants. Chapter 11 does not only include these lower flammability refrigerants in Table 1102.3, but it also contains specific A2L and B2L provisions to address the precautions necessary for the proper use of these products.

In addition, Chapter 11 addresses other minimum requirements for refrigeration systems such as refrigeration machinery rooms (including ventilation), relief valves, and pressure vessels. Apart from refrigerants, the chapter also addresses minimum requirements for systems that use other mediums such as ammonia and brine systems. For ammonia systems, such systems are required to comply with IIAR 2, IIAR 3, IIAR4, and IIAR 5.

Chapter 12 Hydronics. Chapter 12 regulates hydronic systems that are part of heating, cooling, ventilation, and conditioning systems. Such piping systems include steam, hot water, chilled water, steam condensate, and the ground source heat pumps systems. The ground source heat pumps provisions in this chapter apply to the hydronic portions of the system. It is worth noting Appendix F addresses added provisions for ground source heat pumps for geothermal energy systems.

Materials for piping and tubing must meet the working temperature and pressure of the system. In addition, materials must be compatible with the transfer medium to prevent deformation, bursting, or any chemical action between the material and the transfer medium. The allowable joining methods for piping or tubing are provided for application and enforcement purposes.

Chapter 13 Fuel Gas Piping. Chapter 13 regulates gas piping systems in a building, structure or within the property lines of buildings up to 5 psi. Gas piping systems must supply the minimum volume of gas required by each gas appliance to perform their proper operation under working conditions without exceeding the maximum pressure specified by each manufacturer. Because of the hazards associated with fuel gas, it is important to ensure the gas system has been inspected and tested, and that it is safe to turn on the gas supply to the building.

as piping systems must supply the minimum volume of gas required by each gas appliance to perform their proper operation under working conditions without exceeding the maximum pressure specified by each manufacturer. Because of the hazards associated with fuel gas, it is important to ensure the gas system has been inspected and tested, and that it is safe to turn on the gas supply to the building.

Chapter 14 Process Piping. Chapter 14 regulates process piping that typically is found in refineries. Process piping is considered the piping or tubing portion that transports liquid or gas, which is used directly in research, laboratory, or production process. This chapter may be used with another chapter of the code. For example, refrigeration piping, fuel gas piping, or fuel oil piping may need to comply with this chapter for process piping and the applicable chapter for materials, design, and installation.

Chapter 15 Solar Energy Systems. Chapter 15 refers the user to the Uniform Solar, Hydronics and Geothermal Code (USHGC) for installations about solar energy systems. Reference is also made to Section 1203.0 as the heat source provisions are applicable to solar energy systems.

Chapter 16 Stationary Power Plants. This chapter provides minimum requirements for stationary fuel cell power plants. A fuel cell is a device that produces electricity by a chemical reaction. Fuel cells have been used mostly for satellites. However, the costs of fuel cells have decreased to a point where they are now economically attainable. With the increase in electricity costs, fuel cells are being considered as an alternative for producing electricity.

Chapter 17 Referenced Standards. Chapter 17 provides two comprehensive tables with referenced standards. The standards listed in Table 1701.1 are applied as indicated in the applicable reference section(s). A list of additional approved standards, publications, practices, and guides that are not referenced in specific sections appear in Table 1701.2.

Referenced standards set forth specific details of accepted practices, materials specifications, or test methods in many specialized applications. Standards provide an efficient method of conveying complex information and specifications on the performance requirements for materials, products, systems, application, and installation. The manner and purpose for a standard’s use and, in turn, code compliance, must be definitive in all references to the standard. If the standard is intended to

xvi 2022 CALIFORNIA MECHANICAL CODE

FORMAT OF THE UNIFORM MECHANICAL CODE

be a requirement for judging code compliance, the code must state its intent for use. The standard should adequately address a defined need and at the same time specify the minimum performance requirements, technical characteristics and methods of testing, and required test results.

The referenced standards tables are organized in a manner that makes it easy to find specific standards in alphabetical order, and by acronym of the publishing agency of the standard. The tables list the title of the standard, the edition, and any addenda. Contact information for each publishing agency is provided at the end of the chapter.

Appendix A Residential Plans Examiner Review Form for HVAC System Design. A residential plans examiner review form is located in this appendix as an example to assist users in identifying whether the HVAC system has followed the approved procedures for system design (loads, equipment, and ducts).

Appendix B Procedures to be Followed to Place Gas Equipment in Operation. Appendix B provides requirements for the procedures that apply after an appliance is installed in place, piped, and connected to its venting system. The requirements include adjusting the burner input, air adjustments, verifying operation of safety shutoffs, automatic ignition, and protective devices, checking draft for vent-connected appliances, and operating instructions.

Appendix C Installation and Testing of Oil (Liquid) Fuel-Fired Equipment. Appendix C governs the installation, testing, or repair of oil or liquid fuel-burning equipment used in buildings or structures and equipment.

Appendix D Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks. The provisions of this appendix apply to the fuel gas piping systems of mobile home and recreational vehicle parks. These provisions also apply to the use, maintenance, and installation for supplying fuel gas for accessory buildings or structures, and building components.

Appendix E Sustainable Practices. This appendix provides a comprehensive set of technically sound provisions that encourage sustainable practices and works toward improving the design and construction of mechanical systems that result in a positive long-term environmental impact. Environmental sustainability is important because it involves natural resources that human beings need for economic or manufactured capital. Their sustainability is defined by their reliance on infinitely available resources that are naturally occurring, constant, and free to access.

Appendix F Geothermal Energy Systems. Appendix F regulates the design, installation, construction and location of geothermal energy systems. In order to properly design a geothermal system, it is important to know the seasonal variation in the soil temperature, as well as the soil’s inherent capability to store and transmit heat, namely its heat capacity and thermal conductivity.

Materials for piping and tubing must meet the working temperature and pressure of the system. In addition, materials must be compatible with the transfer medium to prevent deformation, bursting, or any chemical action between the material and the transfer medium. The allowable joining methods for piping or tubing are provided for application and enforcement purposes.

Appendix G Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design. Appendix G provides added information on the sizing of gas vents. This appendix is useful to the end user for the proper sizing of venting systems. A series of examples are given that show how to use the tables and other requirements of Chapter 8. In addition, Appendix G shows an example of how to determine the required combination of indoor and outdoor combustion air opening sizes for appliances under Chapter 7. The combustion air example also provides a table that contains the required volume of space per the appliance Btu/h input based on the standard method.

Appendix H Example Calculation of Outdoor Air Rate. Appendix H gives an example of how to calculate the required outdoor air rate under Chapter 4.

2022 CALIFORNIA MECHANICAL CODE xvii

SAMPLE LEGISLATION FOR ADOPTION OF THE UNIFORM MECHANICAL CODE

The Uniform Codes are designed to be adopted by jurisdictions through an ordinance. Jurisdictions wishing to adopt the 2021 Uniform Mechanical Code as an enforceable regulation governing mechanical systems by reference should ensure the legal basis under which adoption and implementation are included in the ordinance.

The following sample ordinance is a guide for drafting an ordinance for adoption that addresses key components regulations and resolutions.

ORDINANCE NO.

An ordinance of the [JURISDICTION] adopting the 2021 edition of the Uniform Mechanical Code, regulating and controlling the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems in the [JURISDICTION]; providing for the issuance of permits and collection of fees therefor; repealing Ordinance No. of the

[JURISDICTION] and all other ordinances and parts of the ordinances in conflict therewith.

The [GOVERNING BODY] of the [JURISDICTION] does ordain as follows:

Section 1 Codes Adopted by Reference. That certain documents, three (3) copies of which are on file in the office of the [JURISDICTION'S KEEPER OF RECORDS] and the [JURISDICTION], being marked and designated as the 2021 Uniform Mechanical Code, including Appendix Chapters [FILL IN THE APPENDIX CHAPTERS BEING ADOPTED], as published by the International Association of Plumbing and Mechanical Officials, be and is hereby adopted as the Code of the [JURISDICTION], in the State of [STATE NAME] regulating and controlling the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of such 2021 Uniform Mechanical Code on file in the office of the

[JURISDICTION] are hereby referred to, adopted, and made a part hereof, as if fully set out in this ordinance.

Section 2 Modifications. The following sections are hereby revised: Section 101.1. Insert: [NAME OF JURISDICTION] Section 104.5. Insert: [APPROPRIATE FEE SCHEDULE]

Section 3 Conflicting Ordinances Repealed. That Ordinance No. of [JURISDICTION] entitled

[TITLE OF THE ORDINANCE OR ORDINANCES IN EFFECT AT THE PRESENT TIME SO THAT THEY WILL BE REPEALED BY MENTION] and all other ordinances or parts of ordinances in conflict herewith are hereby repealed.

Section 4 Preemption. [JURISDICTION] hereby fully occupies and preempts the entire field of regulation of design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems; and provision for the issuance of permits and collection of fees therefor; within the boundaries of [JURISDICTION]. [AS APPROPRIATE] Cities, towns, and counties or other municipalities may enact only those laws and ordinances relating to this field as specifically authorized by state law and consistent with this ordinance. Local laws and ordinances that are inconsistent with, more restrictive than, or exceed the requirements of [ORDINANCE NO.] shall not be enacted and are hereby expressly preempted and repealed, regardless of the nature of the code, charter, or home rule status of such city, town, county, or municipality.

Section 5 Severability. That if any section, subsection, sentence, clause or phrase of this ordinance is, for any reason, held to be unconstitutional, such decision shall not affect the validity of the remaining portions of this ordinance. The [GOVERNING BODY] hereby declares that it would have passed this ordinance, and each section, subsection, clause or phrase thereof, irrespective of the fact that any one or more sections, subsections, sentences, clauses and phrases be declared unconstitutional.

Section 6 Legal Notice. That the [JURISDICTION'S KEEPER OF RECORDS] is hereby ordered and directed to cause this ordinance to be published. (An additional provision may be required to direct the number of times the ordinance is to be published and to specify that it is to be in a newspaper in general circulation. Posting may also be required.)

Section 7 Violations and Penalties. [INCORPORATE PENALTIES FOR VIOLATIONS]

Section 8 Effective Date. That this ordinance and the rules, regulations, provisions, requirements, orders and matters established and adopted hereby shall take effect and be in full force and effect [TIME PERIOD] from and after the date of its final passage and adoption.

xviii 2022 CALIFORNIA MECHANICAL CODE

COMMITTEE ON UNIFORM MECHANICAL CODE

These lists represent the membership at the time the Committee was balloted on the final text of this edition. Since that time, changes in the membership may have occurred.

IAPMO Standards Council

Bill Erickson, Chairman CJ Erickson Plumbing Company [U]

JT Baca, State of New Mexico [E] Carl Crimmins, MN State Pipe Trades, Retired [SE] James Majerowicz, Plumbers JAC LU 130 [L] Rich Prospal, Prospal Consulting Services [C]

Linden Raimer, Raimer Consulting Services, LLC [U] Ron Rice, City of St. Paul, Retired [C] Robert “Bud” Riestenberg, Piping Systems, Inc. [U]

Nonvoting

Gabriella M. Davis, Secretary Hugo Aguilar, Recording Secretary International Association of Plumbing and Mechanical Officials International Association of Plumbing and Mechanical Officials

IAPMO Uniform Mechanical Code Technical Committee

Harvey Kreitenberg, Chairperson Harvey Kreitenberg & Associates [SE]

Bob Adler, City of San Jose, CA [E] Sarah Aguilar, Ciari Plumbing & Heating [I/M] Richard Benkowski, United Association [L] DJ Berger, National ITC [U] Richard Church, Plastic Pipe & Fittings Association (PPFA) [M] David Dias, Sheet Metal Workers Local 104 [L] David Delaquila, National Propane Gas Association [U] Jay Egg, EggGeothermal Consulting [SE] Pennie Feehan, Copper Development Association (CDA) [M] Aaron Gunzner, Air Movement and Control Association

International (AMCA) [R/S/T] John Hamilton, Testing Adjusting and Balancing Bureau (TABB) [R/S/T] Shawn Hargis, City of Los Angeles Department of

Building & Safety [E]

Kevin Brown, City of Los Angeles Department of Building

& Safety [E] Michael Cudahy, Plastic Pipe & Fittings Association (PPFA) [M] Micah Dawson, Air Distribution Institute (ADI) [M] Mat Hattich, UA Local 342 [L] David Ledda, City/County of San Francisco, CA [E]

Heath Dehn, NFPA [R/S/T] Zalmie Hussein, IAPMO Staff Liaison

John Heine, Heine Plumbing & Heating [I/M] Eli Howard, Sheet Metal & Air Conditioning Contractors’ National

Association (SMACNA) [R/S/T] Michael Hyde, State of Idaho-Division of Building & Safety [E] Ralph Koerber, Air Duct Council [M] Lance MacNevin, Plastics Pipe Institute (PPI) [SE] Dave Mann, CA State Pipe Trades [L] Phil Ribbs, PHR Consultants [SE] Donald Cary Smith, Sound Geothermal Corporation [SE] Don Taylor, Self [U] April Trafton, Donald Dickerson & Associates [SE] Phil Trafton, American Society of Heating, Refrigerating &

Air-Conditioning Engineers (ASHRAE) [R/S/T] Chris Van Rite, Air Distribution Institute (ADI) [M] Randy Young, Northern CA Valley Sheet Metal Industry JATC [L]

Alternates

Tim Orris, Air Movement and Control Association International

(AMCA) [R/S/T] James Pavesic, United Association [L] Chris Ruch, National Energy Management Institute (NEMI) [R/S/T] Robert Sewell, Plumbers & Steamfitters Local 159 [L] Jason Shelton, Air Duct Council [M] Chuck White, Plumbing Heating Cooling Contractors (PHCC) [I/M]

Nonvoting

Laura Moreno, NFPA [R/S/T] David Straub, Ex-Officio IAPMO [E]

COMMITTEE MEMBERSHIP CLASSIFICATION ABBREVIATIONS These classifications apply to Technical Committee members and represent their principal interest in the activity of a committee.

M Manufacturer : A representative of a maker or marketer of a product, assembly or system, or portion thereof, that is affected by the

standard. U User : A representative of an entity that is subject to the provisions of the standard or that voluntarily uses the standard. I/M Installer/Maintainer : A representative of an entity that is in the business of installing or maintaining a product, assembly or system

affected by the standard. L Labor : A labor representative or employee concerned with safety in the workplace. R/S/T Research/Standards/Testing Laboratory : A representative of an independent research organization; an organization that develops

codes, standards or other similar documents; or an independent testing laboratory. E Enforcing Authority : A representative or an agency or an organization that promulgates and/or enforces standards. C Consumer : A person who is, or represents, the ultimate purchaser of a product, system, or service affected by the standard, but who is

not included in the User classification. SE Special Expert : A person not representing any of the previous classifications, but who has special expertise in the scope of the standard or

portion thereof.

2022 CALIFORNIA MECHANICAL CODE xix

SECTION RELOCATION

xx 2022 CALIFORNIA MECHANICAL CODE

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 Mechanical Code – 2021 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: The Study Guide is a complete self-study course for learning the UMC. A big help in getting ready for a certification exam! This book is the perfect complement to the UMC Illustrated Training Manual.

Guide to Important Code Questions to the Uniform Mechanical Code: An excellent reference for learning and understanding mechanical code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

Uniform Plumbing Code – 2021 Edition: The Uniform Plumbing Code is the most widely adopted plumbing code in the world. The 2021 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.

2022 CALIFORNIA MECHANICAL CODE xxi

RELATED PUBLICATIONS AND SERVICES

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

Uniform Swimming Pool, Spa, and Hot Tub Code – 2021 Edition: The Uniform Swimming Pool, Spa and Hot Tub Code contains complete and current requirements for the erection, installation, alteration, repair, relocation, replacement, addition to and use or maintenance of these systems.

Uniform Solar, Hydronics and Geothermal Code – 2021 Edition: The Uniform Solar, Hydronics and Geothermal Code contains complete requirements for the erection, installation, alteration, addition, repair, relocation, replacement, addition to, use or maintenance of these systems.

Drain Waste and Vent Calculator: A slide-rule style calculator provides quick and simple access to the fixture unit and sizing tables of Chapter 7 of the UPC.

Water Sizing Calculator: Sizing water systems becomes a much simpler task with the use of this handy slide-rule style calculator.

Natural Gas Pipe Sizing Calculator: This Natural Gas Pipe Sizing Calculator is presented in an easy to use and read slide-rule format. Designed for systems with a supply pressure of six to eight inches of water column, all pipe capacities are given in cubic feet per hour.

Trailer Standards: IAPMO has developed a number of standards for specialty products used in manufactured homes and recreational vehicles. These standards are available individually, or they may be purchased as a set.

Education and Training Seminars: IAPMO specializes in conducting training and education, including fulfilling continuing education requirements, on the UPC and UMC as well as all of the most commonly utilized codes in the Construction Trades. Special seminars on industry or code subjects are expeditiously created and delivered upon request. Please call to obtain the seminar schedule or to arrange for a custom special seminar.

Backflow Prevention Institute – IAPMO: The IAPMO Backflow Prevention Institute provides professional education and training for the control of hazards to our water supply and is dedicated to water-system safety worldwide. The Institute provides training in backflow prevention and cross-connection control. This program includes backflow preventers, testers, repairers, cross-connection control surveyors, program administrators and fire-sprinkler backflow preventer testers. Each of these courses provides compliance certification to American Society of Sanitary Engineering (ASSE) Series 5000 Professional Qualification Standards.

Backflow Prevention Reference Manual: This unique 300-page manual contains full-color illustrations and sections relating to real-world installations, backflow prevention, testing cross-connection control, repair and inspections. The manual is an excellent textbook and a reference the inspectors in every jurisdiction should have access too. It is also an important resource for system designers, urban planners and utility companies – professionals on both sides of the water meter.

Backflow Prevention Tech-Wheel: Find quick answers to your backflow preventer questions! The Backflow Tech-Wheel contains a wealth of information in a graphic, quick reference format. One side delivers solutions to device application questions; the other a troubleshooting guides offering solutions to backflow problems.

ANSI Z124 Standards: These standards are written to specifically address a variety of plastic plumbing fixtures and components. They are available individually, or may be grouped for quantity discounts.

xxii 2022 CALIFORNIA MECHANICAL CODE

RELATED PUBLICATIONS AND SERVICES

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

IAPMO Installation Standards: IAPMO standards committees have formulated installation standards for a wide variety of commonly used plumbing materials and systems. The IAPMO installation standards are included after the text of the Uniform Plumbing Code, or can be purchased separately.

Material and Property Standards: IAPMO does not generally develop material and property standards, but when a need exists the Association will take a leadership role by filling the void. They are available, are subject to amendments and are withdrawn when recognized consensus standards are formulated.

OFFICIAL Magazine: IAPMO’s bimonthly publication features informative articles related to Plumbing and Mechanical HVACR installations, award winning general interest features, technical columns and industry updates. Subscriptions are available and all IAPMO members receive a free copy of every issue!

Membership in IAPMO: IAPMO membership is open to all interested persons. Membership categories include Student, Individual, Senior, Organizational and Governmental. Member benefits include discounted prices on IAPMO publications, a subscription to Official magazine, and numerous educational and training opportunities.

HOW TO CONTACT IAPMO Mailing Address: 4755 East Philadelphia Street, Ontario, California 91761-2816 Main Number: 909-472-4100 • Publication Orders: 800-85-IAPMO • Publication Fax: 877-85-CODES

Website: www.iapmo.org • Office Hours: Monday – Friday, 8am – 5pm Pacific Time

2022 CALIFORNIA MECHANICAL CODE xxiii

TABLE OF CONTENTS

xxiv

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxv

TABLE OF CONTENTS

xxvi

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxvii

TABLE OF CONTENTS

xxviii

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxix

TABLE OF CONTENTS

xxx

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxxi

TABLE OF CONTENTS

xxxii

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxxiii

TABLE OF CONTENTS

xxxiv

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxxv

TABLE OF CONTENTS

xxxvi

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxxvii

TABLE OF CONTENTS

xxxviii

2022 CALIFORNIA MECHANICAL CODE

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xxxix

TABLE OF CONTENTS

xl

Table 1315.2(35) Polyethylene Plastic Pipe . . . . . . . 311

Table 1315.2(36) Polyethylene Plastic Tubing . . . . . 312

2022 CALIFORNIA MECHANICAL CODE

APPENDICES TABLE OF CONTENTS. . . . . . . . 347

Appendix A Residential Plans Examiner Review Form for HVAC System Design . . . . . . . . . . . . . . . 349

Appendix B Procedures to be Followed to Place Gas Equipment in Operation . . . . . . . . . . . . . . . . . . . 353

Appendix C Installation and Testing of Oil (Liquid) Fuel-Fired Equipment . . . 357

Appendix D Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks . . . . . . . . . . . . . . . . 365

Appendix E Sustainable Practices . . . . . . . . . . 373

Appendix F Geothermal Energy Systems . . . . 481

Appendix G Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design . . . . . 493

Appendix H Example Calculation of Outdoor Air Rate. . . . . . . . . . . . . . . . . . . . . 505

USEFUL TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . 509

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . 517

HISTORY NOTE

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . 535

2022 CALIFORNIA MECHANICAL CODE

TABLE OF CONTENTS

xli

xlii 2022 CALIFORNIA MECHANICAL CODE

CALIFORNIA MECHANICAL CODE – MATRIX ADOPTION TABLE

CHAPTER 1 – ADMINISTRATION

(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.)

2022 CALIFORNIA MECHANICAL CODE 1

CALIFORNIA MECHANICAL CODE – MATRIX ADOPTION TABLE

CHAPTER 1 – ADMINISTRATION (continued)

(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.)

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 2022 CALIFORNIA MECHANICAL CODE

CHAPTER 1

ADMINISTRATION

DIVISION I CALIFORNIA ADMINISTRATION

1.1.0 General. 1.1.1 Title. These regulations shall be known as the California Mechanical Code, may be cited as such and will be referred to herein as “this code.” The California Mechanical Code is Part 4 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of mechanical regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2021 Uniform Mechan- ical 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 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 emer- gency 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.

1.1.3.1 Nonstate-Regulated Buildings, Structures, and Applications. Except as modified by local ordinance pursuant to Section 1.1.8, the following standards in the California Code of Regulations, Title 24, Parts 2, 2.5, 3, 4, 5, 6, 9, 10 and 11 shall apply to all occupancies and applications not regulated by a state agency. 1.1.3.2 State-Regulated Buildings, Structures, and Applications. The model code, state amendments to the model code, and/or state amendments where there are no relevant model code provisions shall apply to the following buildings, structures, and applications regu- lated by state agencies as specified in Sections 1.2.0 through 1.14.0, except where modified by local ordinance pursuant to Section 1.1.8. When adopted by a state agency, the provisions of this code shall be enforced by the appropriate enforcing agency, but only to the extent of authority granted to such agency by the state legislature. Note: See “How to Distinguish Between Model Code Language and California Amendments” in the front of the code. (1) State-owned buildings, including buildings constructed by the Trustees of the California State University, and to the extent permitted by California laws, buildings designed and constructed by the

Regents of the University of California, and regu- lated by the Building Standards Commission. See Section 1.2.0 for additional scope provisions. (2) Section 1.3.0 is reserved for the Board of State and

Community Corrections. (3) Section 1.4.0 is reserved for the Department of

Consumer Affairs. (4) Section 1.5.0 is reserved for the California Energy

Commission. (5) Section 1.6.0 is reserved for the Department of Food

and Agriculture. (6) Organized camps, laboratory animal quarters,

public swimming pools, radiation protection, commissaries serving mobile food preparation vehi- cles, and wild animal quarantine facilities regulated by the Department of Public Health. See Section 1.7.0 for additional scope provisions. (7) Hotels, motels, lodging houses, apartments,

dwellings, dormitories, condominiums, shelters for homeless persons, congregate residences, employee housing, factory-built housing and other types of dwellings containing sleeping accommodations with or without common toilets or cooking facilities. See Section 1.8.2.1.1 for additional scope provisions. (8) Accommodations for persons with disabilities in

buildings containing newly constructed covered multifamily dwellings, new common use areas serving existing covered multifamily dwellings, additions to existing buildings where the addition alone meets the definition of covered multifamily dwellings and new common-use areas serving new covered multifamily dwellings which are regulated by the Department of Housing and Community Development. See Section 1.8.2.1.2 for additional scope provisions. (9) Permanent buildings and permanent accessory build-

ings or structures constructed within mobilehome parks and special occupancy parks regulated by the Department of Housing and Community Development. See Section 1.8.2.1.3 for additional scope provisions. (10)Accommodations for persons with disabilities regu-

lated by the Division of the State Architect. See Section 1.9.1 for additional scope provisions. (11) Public elementary and secondary schools, commu-

nity college buildings and state-owned or state- leased essential service buildings regulated by the Division of the State Architect. See Section 1.9.2 for additional scope provisions. (12)Reserved for the State Historical Building Safety

Board with the Division of the State Architect.

2022 CALIFORNIA MECHANICAL CODE 3

DIVISION I CALIFORNIA ADMINISTRATION

(13)General acute care hospitals, acute psychiatric

hospitals, skilled nursing and/or intermediate care facilities, clinics licensed by the Department of Public Health and correctional treatment centers regulated by the Office of Statewide Health Plan- ning and Development. See Section 1.10.0 for addi- tional scope provisions. (14)Applications regulated by the Office of State Fire

Marshal include but are not limited to the following in accordance with Section 1.11.0: (1) Buildings or structures used or intended for use

as an: 1.1. Asylum, jail, prison. 1.2. Mental hospital, hospital, home for the elderly, children’s nursery, children’s home or institution, school or any similar occu- pancy of any capacity. 1.3. Theater, dancehall, skating rink, audito- rium, assembly hall, meeting hall, night- club, fair building or similar place of assemblage where 50 or more persons may gather together in a building, room, or structure for the purpose of amusement, entertainment, instruction, deliberation, worship, drinking or dining, awaiting transportation, or education. 1.4. Small family day care homes, large family day-care homes, residential facilities and residential facilities for the elderly, resi- dential care facilities. 1.5. State institutions or other state-owned or state-occupied buildings. 1.6. High rise structures. 1.7. Motion picture production studios. 1.8. Organized camps. 1.9. Residential structures. (2) Tents, awnings, or other fabric enclosures used

in connection with any occupancy. (3) Fire alarm devices, equipment, and systems in

connection with any occupancy. (4) Hazardous materials, flammable, and combustible liquids. (5) Public school automatic fire detection, alarm,

and sprinkler systems. (6) Wildland-urban interface fire areas. (15)Section 1.12.0 is reserved for public libraries

constructed and renovated using funds from the California Library Construction and Renovation Bond Act of 1988 and regulated by the State Librarian. (16)Section 1.13.0 is reserved for the Department of

Water Resources. (17)For applications listed in Section 1.9.1 regulated by

the Division of the State Architect – Access Compli-

ance, outdoor environments and uses shall be clas- sified according to accessibility uses described in Chapters 11A and 11B. (18)Section 1.14.0 is reserved for Marine Oil Terminals

regulated by the California State Lands Commis- sion. 1.1.4 Appendices. Provisions contained in the appendices of this code shall not apply unless specifically adopted by a state agency or adopted by a local enforcing agency in compliance with Health and Safety Code Section 18901 et. seq. for Building Standards Law, Health and Safety Code Section 17950 for State Housing Law and Health and Safety Code Section 13869.7 for Fire Protection Districts. See Section 1.1.8 of this code. 1.1.5 Referenced Codes. The codes, standards and publica- tions adopted and set forth in this code, including other codes, standards, and publications referred to therein are, by title and date of publication, hereby adopted as standard refer- ence documents of this code. When this code does not specif- ically cover any subject related to building design and construction, recognized architectural, or engineering prac- tices shall be employed. The National Fire Codes, standards, and the Fire Protection Handbook of the National Fire Protection Association are permitted to be used as authori- tative guides in determining recognized fire prevention engi- neering practices. 1.1.6 NonBuilding Standards, Orders and Regulations. Requirements contained in the Uniform Mechanical Code, or in any other referenced standard, code or document, which are not building standards as defined in Health and Safety Code Section 18909, shall not be construed as part of the provisions of this code. For nonbuilding standards, orders, and regulations, see other titles of the California Code of Regulations. 1.1.7 Order of Precedence and Use. 1.1.7.1 Differences. In the event of any differences between these building standards and the standard refer- ence documents, the text of these building standards shall govern. 1.1.7.2 Specific Provisions. Where a specific provision varies from a general provision, the specific provision shall apply. 1.1.7.3 Conflicts. When the requirements of this code conflict with the requirements of any other part of the California Building Standards Code, Title 24, the most restrictive requirements shall prevail.

1.1.7.3.1 Detached One- and Two-Family Dwellings. Detached one- and two-family dwellings, efficiency dwelling units, lodging houses, live/work units, townhouses not more than three stories above grade plane in height with a separate means of egress, and their accessory structures, shall not be required to comply with the California Residential Code if constructed in accordance with the California Building Code.

4 2022 CALIFORNIA MECHANICAL CODE

1.1.8 City, County, or City and County Amendments, Additions or Deletions. The provisions of this code do not limit the authority of city, county, or city and county governments to establish more restrictive and reasonably necessary differences to the provisions contained in this code pursuant to complying with Section 1.1.8.1. The effective date of amendments, addi- tions, or deletions to this code by a city, county, or city and county filed pursuant to Section 1.1.8.1 shall be the date filed. However, in no case shall the amendments, additions, or dele- tions to this code be effective any sooner than the effective date of this code.

Local modifications shall comply with Health and Safety Code Section 18941.5 for Building Standards Law, Health and Safety Code Section 17958 for State Housing Law or Health and Safety Code Section 13869.7 for Fire Protection Districts.

1.1.8.1 Findings and Filings. (1) The city, county, or city and county shall make

express findings for each amendment, addition, or deletion based upon climatic, topographical, or geological conditions. Exception: Hazardous building ordinances and programs mitigating unreinforced masonry build- ings. (2) The city, county, or city and county shall file the

amendments, additions or deletions expressly marked and identified as to the applicable findings. Cities, counties, cities and counties, and fire depart- ments shall file the amendments, additions, or dele- tions, and the findings with the California Building Standards Commission at 2525 Natomas Park Drive, Suite 130, Sacramento, CA 95833. (3) Findings prepared by fire protection districts shall

be ratified by the local city, county, or city and county and filed with the California Department of Housing and Community Development, Division of Codes and Standards, P.O. Box 278180, Sacra- mento, CA 95827-8180 or 9342 Tech Center Drive, Suite 500, Sacramento, CA, 95826-2582. 1.1.8.2 California Energy Code Requirements for Locally Adopted Energy Standards. In addition to the provisions of Section 1.1.8.1 of this part, local jurisdic- tions that adopt changes to energy conservation or insu- lation standards (including energy efficiency measures) may not enforce such changes until the California Energy Commission has made the findings required by Public Resources Code Section 25402.1(h)(2), following the process specified in Section 10-106 of the California Administrative Code. 1.1.9 Effective Date of This Code. Only those standards approved by the California Building Standards Commission that are effective at the time an application for building permit is submitted shall apply to the plans and specifications for, and to the construction performed under, that permit. For the effective dates of the provisions contained in this code, see the History Note page of this code.

DIVISION I CALIFORNIA ADMINISTRATION

Exceptions: (1) [HCD 1 & HCD 2] Retroactive permits issued in accor-

dance with Health and Safety Code Section 17958.12. (2) [HCD 1 & HCD 2] Plans approved by the Department of

Housing and Community Development or a Department- approved design approval agency for factory-built housing as defined by Health and Safety Code Section 19971. Approved plans, pursuant to the California Code of Regu- lations, Title 25, Division 1, Chapter 3, Subchapter 1, Article 3, Section 3037 remain valid for a period of 36 months from the date of plan approval. 1.1.10 Availability of Codes. At least one complete copy each of Titles 8, 19, 20, 24, and 25 with all revisions shall be main- tained in the office of the building official responsible for the administration and enforcement of this code. Each state department concerned and each city, county, or city and county shall have an up-to-date copy of the code available for public inspection, see Health and Safety Code Section 18942(e)(1) and (2). 1.1.11 Format. This part fundamentally adopts the Uniform Mechanical Code by reference on a chapter-by-chapter basis. When a specific chapter of the Uniform Mechanical Code is not printed in the code and is marked “Reserved”, such chapter of the Uniform Mechanical Code is not adopted as a portion of this code. When a specific chapter of the Uniform Mechanical Code is marked “Not adopted by the State of California” but appears in the code, it may be available for adoption by local ordinance. Note: Matrix Adoption Tables at the front of each chapter may aid the code user in determining which chapter or sections within a chapter are applicable to buildings under the authority of a specific state agency, but they are not to be considered regulatory. 1.1.12 Validity. If any chapter, section, subsection, sentence, clause, or phrase of this code is for any reason held to be unconstitutional, contrary to statute, exceeding the authority of the state as stipulated by statutes or otherwise inoperative, such decision shall not affect the validity of the remaining portion of this code.

1.2.0 Building Standards Commission. 1.2.1 BSC. Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. (1) State Buildings for All Occupancies.

Application – State buildings (all occupancies), including buildings constructed by the Trustees of the California State University (CSU) and the Regents of the University of California (UC) where no state agency has the authority to adopt building standards applicable to such buildings. Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Health and Safety Code Section 18934.5.

2022 CALIFORNIA MECHANICAL CODE 5

DIVISION I CALIFORNIA ADMINISTRATION

Reference – Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901. (2) University of California, California State Universities,

and California Community Colleges. Application – Standards for lighting for parking lots and primary campus walkways at the University of Cali- fornia, California State Universities, and California Community Colleges. Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Government Code Section 14617. Reference – Government Code Section 14617. (3) Existing State-Owned Buildings, including those

owned by the University of California and by the Cali- fornia State University – Building seismic retrofit stan- dards including abating falling hazards of structural and nonstructural components and strengthening of building structures. See also Division of the State Architect. Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Government Code Section 16600. References – Government Code Sections 16600 through 16604. (4) Unreinforced Masonry Bearing Wall Buildings.

Application – Minimum seismic strengthening standards for buildings specified in the California Existing Building Code, except for buildings subject to building standards adopted pursuant to Part 1.5 (commencing with Section 17910). Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Health and Safety Code Section 18934.7. References – Health and Safety Code Division 13, Part 2.5 commencing with Sections 18901. 1.2.1.1 State Building. For purposes of this code, a “state building” is a structure for which a state agency or state entity has authority to construct, alter, enlarge, replace, repair or demolish. 1.2.1.2 Enforcement. [CSU, UC, Judicial Council and California Department of Corrections Rehabilitation] state agencies or state entities authorized to construct state buildings may appoint a building official who is responsible to the agency for enforcement of the provi- sions of the California Building Standards Code. Exception: State buildings regulated by other sections of this code remain the enforcement responsibility of the designated entities. 1.2.1.3 Enforcement, Reserved for DGS. 1.2.1.4 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym BSC.

1.2.2 BSC-CG. Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. (1) Green Building Standards for Nonresidential Occu-

pancies. Application – All occupancies where no other state agency has the authority to adopt green building stan- dards applicable to those occupancies. Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Health and Safety Code Sections 18930.5, 18938 and 18940.5. Reference – Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901. (2) Graywater Systems for Nonresidential Occupancies.

Application – The construction, installation, and alter- ation of graywater systems for indoor and outdoor uses in nonresidential occupancies. Enforcing Agency – State or local agency specified by the applicable provisions of law. Authority Cited – Health & Safety Code Section 18941.8. Reference – Health & Safety Code Section 18941.8. 1.2.3 Alternative Materials, Design, and Methods of Construction and Equipment. The provisions of this code are not intended to prevent the installation of any material or to prohibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved. An alternative material, design, or method of construction shall be approved where the building official finds that the proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in quality, strength, effectiveness, fire resistance, durability and safety.

1.2.3.1 Research Reports. Supporting data, where neces- sary to assist in the approval of materials or assemblies not specifically provided for in this code, shall consist of valid research reports from approved sources. 1.2.3.2 Tests. Whenever there is insufficient evidence of compliance with the provisions of this code, or evidence that a material or method does not conform to the require- ments of this code, or in order to substantiate claims for alternative materials or methods, the building official shall have the authority to require tests as evidence of compli- ance to be made at no expense to the jurisdiction. Test methods shall be as specified in this code or by other recog- nized test standards. In the absence of recognized and accepted test methods, the building official shall approve the testing procedures. Tests shall be performed by an approved agency. Reports of such tests shall be retained by the building official for the period required for retention of public records.

6 2022 CALIFORNIA MECHANICAL CODE

1.3.0 Reserved for Corrections Standards Authority.

1.4.0 Department of Consumer Affairs. 1.4.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

Board of Pharmacy. Application – Pharmacies. Enforcing Agency – State or local agency specified by applicable provisions of law. Authority Cited – Business and Professions Code Section 4005. References – Business and Professions Code Sections 4005, 4127.7, and 4201. 1.4.2 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym CA.

1.5.0 Reserved for California Energy Commission.

1.6.0 Reserved for Department of Food and Agriculture.

1.7.0 California Department of Public Health. 1.7.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

Department of Public Health. Application – Food establishments. Enforcing Agency – Department of Health Services and the local health agency. Authority Cited – Health and Safety Code Sections 110065, 113710, and 131200. References – Health and Safety Code Sections 110065, 113705, 114140, and 131200. 1.7.2 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym DPH.

1.8.0 Department of Housing and Community Development

[HCD]. 1.8.1 Purpose. The purpose of this code is to establish the minimum requirements necessary to protect the health, safety, and general welfare of the occupants and the public by governing the erection, construction, reconstruction, enlarge- ment, conversion, alteration, repair, moving, removal, demo- lition, ventilation, and maintenance or use of heating, ventilating, cooling, refrigeration systems, incinerators, and other miscellaneous heat-producing appliances.

DIVISION I CALIFORNIA ADMINISTRATION

1.8.2 Authority and Abbreviations. 1.8.2.1 General. The Department of Housing and Community Development is authorized by law to prom- ulgate and adopt building standards and regulations for several types of building applications. The applications under the authority of the Department of Housing and Community Development are listed in Sections 1.8.2.1.1 through 1.8.2.1.3.

1.8.2.1.1 Housing Construction. Application – Hotels, motels, lodging houses, apart- ments, dwellings, dormitories, condominiums, shel- ters for homeless persons, congregate residences, employee housing, factory-built housing, and other types of dwellings containing sleeping accommoda- tions with or without common toilet or cooking facil- ities including accessory buildings, facilities, and uses thereto. Sections of this code which pertain to applications listed in this section are identified using the abbreviation “HCD 1”. Enforcing Agency – Local building department or the Department of Housing and Community Devel- opment. Authority Cited – Health and Safety Code Sections 17040, 17920.9, 17921, 17921.5, 17921.6, 17921.10, 17922, 17922.6, 17922.12, 17922.14, 17922.15, 17926, 17927, 17928, 17958.12, 18938.3, 18944.11, and 19990; and Government Code Section 12955.1. References – Business and Professions Code Divi- sion 5; Health and Safety Code Sections 17000 through 17062.5, 17910 through 17995.5, 18200 through 18700, 18860 through 18874, 18938.6, 18941, 19890, 19891, 19892 and 19960 through 19997; Civil Code Sections 832, 1101.4, 1101.5, 1954.201, 1954.202 and 5551; and Government Code Sections 8698.4, 12955.1 and 12955.1.1. Cali- fornia Code of Regulations, Title 20, Sections 1605.1, 1605.3 and 1607. 1.8.2.1.2 Housing Accessibility. Application – Covered multifamily dwellings as defined in Chapter 2 of the California Code of Regu- lations, Title 24, Part 2, also known as the California Building Code including, but not limited to, lodging houses, dormitories, timeshares, condominiums, shel- ters for homeless persons, congregate residences, apartments, dwellings, employee housing, factory- built housing, and other types of dwellings containing sleeping accommodations with or without common toilet or cooking facilities.

Sections of this code identified by the abbrevia- tion “HCD 1-AC” require specific accommodations for persons with disabilities as defined in Chapter 2 of the California Building Code. The application of such provisions shall be in conjunction with other requirements of this code and apply only to newly- constructed covered multifamily dwellings as defined in Chapter 2 of the California Building Code. “HCD 1-AC” applications include, but are not limited to, the following:

2022 CALIFORNIA MECHANICAL CODE 7

DIVISION I CALIFORNIA ADMINISTRATION

(1) All newly-constructed covered multifamily

dwellings as defined in Chapter 2 of the Cali- fornia Building Code. (2) New common use areas as defined in Chapter 2

of the California Building Code serving existing covered multifamily dwellings. (3) Additions to existing buildings, where the addi-

tion alone meets the definition of covered multi- family dwellings as defined in Chapter 2 of the California Building Code. (4) New common use areas serving new covered

multifamily dwellings. (5) Where any portion of a building’s exterior is

preserved, but the interior of the building is removed, including all structural portions of floors and ceilings, the building is considered a new building for determining the application of California Building Code, Chapter 11A. “HCD 1-AC” building standards generally do not apply to public use areas or public accommodations such as hotels and motels, and public housing. Public use areas, public accommodations, and public housing, as defined in Chapter 2 of the Cali- fornia Building Code, are subject to the Division of the State Architect (DSA-AC) in Chapter 11B, and are referenced in Section 1.9.1.

Newly constructed covered multifamily dwellings, which can also be defined as public housing, shall be subject to the requirements of Chapter 11A and Chapter 11B. Enforcing Agency – Local building department or the Department of Housing and Community Devel- opment. Authority Cited – Health and Safety Code Sections 17040, 17920.9, 17921, 17921.5, 17921.6, 17921.10, 17922, 17922.6, 17922.12, 17922.14, 17926, 17927, 17928, 17958.12, 18938.3, 18944.11, and 19990; and Government Code Section 12955.1 and 12955.1.1. References – Health and Safety Code Sections 17000 through 17062.5, 17910 through 17995.5, 18200 through 18700, 18860 through 18874, 18938.6, 18941 and 19960 through 19997; Civil Code Sections 1101.4, 1101.5, 1954.201, 1954.202; and Government Code Sections 12955.1 and 12955.1.1. California Code of Regulations, Title 20, Sections 1605.1, 1605.3 and 1607. 1.8.2.1.3 Permanent Buildings in Mobilehome Parks and Special Occupancy Parks. Application – Permanent buildings, and permanent accessory buildings or structures, constructed within mobilehome parks and special occupancy parks that are under the control and ownership of the park operator. Sections of this code which pertain to applications listed in this section are iden- tified using the abbreviation “HCD 2”.

e_** Parks and Special Occupancy Parks. Application – Permanent buildings, and permanent accessory buildings or structures, constructed within mobilehome parks and special occupancy parks that are under the control and ownership of the park operator. Sections of this code which pertain to applications listed in this section are iden- tified using the abbreviation “HCD 2”.

Enforcing Agency – The Department of Housing and Community Development, local building depart- ment or other local agency that has assumed respon- sibility for the enforcement of Health and Safety Code, Division 13, Part 2.1, commencing with Section 18200 for mobilehome parks and Health and Safety Code, Division 13, Part 2.3, commencing with Section 18860 for special occupancy parks. Authority Cited – Health and Safety Code Sections 17040, 17920.9, 17921, 17921.5, 17921.6, 17921.10, 17922, 17922.6, 17922.12, 17922.14, 17922.15, 17926, 17927, 17928, 17958.12, 18552, 18554, 18620, 18630, 18640, 18670, 18690, 18691, 18865, 18871.3, 18871.4, 18873, 18873.1 through 18873.5, 18938.3, 18944.11, and 19990; and Government Code Section 12955.1. References – Health and Safety Code Sections 17000 through 17062.5, 17910 through 17995.5, 18200 through 18700, 18860 through 18874, 18938.6, 18941, 19890, 19891, 19892 and 19960 through 19997; Civil Code Sections 1101.4, 1101.5 and 1954.201; and Government Code Sections 12955.1 and 12955.1.1. California Code of Regula- tions, Title 20, Sections 1605.1, 1605.3 and 1607; and Title 25, Sections 1042 and 2042. 1.8.3 Local Enforcing Agency. 1.8.3.1 Duties and Powers. The building department of every city, county, or city and county shall enforce all the provisions of law, this code, and the other rules and regu- lations promulgated by the Department of Housing and Community Development pertaining to the installation, erection, construction, reconstruction, movement, enlargement, conversion, alteration, repair, removal, demolition, or arrangement of apartments, condo- miniums, hotels, motels, lodging houses, and dwellings, including accessory buildings, facilities, and uses thereto.

The provisions regulating the erection and construc- tion of dwellings and appurtenant structures shall not apply to existing structures as to which construction is commenced or approved prior to the effective date of these regulations. Requirements relating to use, mainte- nance, and occupancy shall apply to all dwellings and appurtenant structures approved for construction or constructed before or after the effective date of this code.

ion of dwellings and appurtenant structures shall not_ apply to existing structures as to which construction is commenced or approved prior to the effective date of these regulations. Requirements relating to use, mainte- nance, and occupancy shall apply to all dwellings and appurtenant structures approved for construction or constructed before or after the effective date of this code.

For additional information regarding the use and occupancy of existing buildings and appurtenant structures, see California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1, commencing with Section 1. 1.8.3.2 Laws, Rules, and Regulations. Other than the building standards contained in this code, and notwith- standing other provisions of law, the statutory authority and location of the laws, rules, and regulations to be enforced by local enforcing agencies are listed by statute in Sections 1.8.3.2.1 through 1.8.3.2.5.

1.8.3.2.1 State Housing Law. Refer to the State Housing Law, California Health and Safety Code, Division 13, Part 1.5, commencing with Section 17910, and California Code of Regulations, Title 25,

8 2022 CALIFORNIA MECHANICAL CODE

Division 1, Chapter 1, Subchapter 1, commencing with Section 1, for the erection, construction, recon- struction, movement, enlargement, conversion, alter- ation, repair, removal, demolition, or arrangement of apartments, condominiums, hotels, motels, lodging houses, and dwellings, including accessory buildings, facilities, and uses thereto. 1.8.3.2.2 Mobilehome Parks Act. Refer to the Mobilehome Parks Act, California Health and Safety Code, Division 13, Part 2.1, commencing with Section 18200 and California Code of Regula- tions, Title 25, Division 1, Chapter 2, commencing with Section 1000 for mobilehome park administra- tive and enforcement authority, permits, plans, fees, violations, inspections, and penalties both within and outside mobilehome parks. Exception: Mobilehome parks where the Depart- ment of Housing and Community Development is the enforcing agency. 1.8.3.2.3 Special Occupancy Parks Act. Refer to the Special Occupancy Parks Act, California Health and Safety Code, Division 13, Part 2.3, commencing with Section 18860 and California Code of Regulations, Title 25, Division 1, Chapter 2.2, commencing with Section 2000 for special occupancy park administra- tive and enforcement authority, permits, fees, viola- tions, inspections, and penalties both within and outside of special occupancy parks. Exception: Special occupancy parks where the Department of Housing and Community Develop- ment is the enforcing agency. 1.8.3.2.4 Employee Housing Act. Refer to the Employee Housing Act, California Health and Safety Code, Division 13, Part 1, commencing with Section 17000 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 3, commencing with Section 600 for employee housing administrative and enforcement authority, permits, fees, violations, inspections, and penalties. 1.8.3.2.5 Factory-Built Housing Law. Refer to the Factory-Built Housing Law, California Health and Safety Code, Division 13, Part 6, commencing with Section 19960 and California Code of Regulations, Title 25, Division 1, Chapter 3, Subchapter 1, commencing with Section 3000 for factory-built housing administrative and enforcement authority, permits, fees, violations, inspections, and penalties. 1.8.4 Permits, Fees, Applications, and Inspections. 1.8.4.1 Permits. A written construction permit shall be obtained from the enforcing agency prior to the erection, construction, reconstruction, installation, relocation, or alteration of any mechanical system. Exceptions: (1) Work exempt from permits as specified in Chapter

1, Administration, Division II, Section 104.2 Items (1) through (5) of this code. (2) Changes, alterations, or repairs of a minor nature not

affecting structural features, egress, sanitation, safety, or accessibility as determined by the enforcing agency.

DIVISION I CALIFORNIA ADMINISTRATION

(3) Retroactive permits issued in accordance with Health

and Safety Code Section 17958.12. Exemptions from permit requirements shall not be deemed to grant authorization for any work to be done in any manner in violation of other provisions of law or this code. 1.8.4.2 Fees. Subject to other provisions of law, the governing body of any city, county, or city and county may prescribe fees to defray the cost of enforcement of rules and regulations promulgated by the Department of Housing and Community Development. The amount of the fees shall not exceed the amount reasonably neces- sary to administer or process permits, certificates, forms, or other documents, or to defray the costs of enforcement. For additional information, see State Housing Law, Health and Safety Code, Division 13, Part 1.5, Section 17951 and California Code of Regulations, Title 25, Divi- sion 1, Chapter 1, Subchapter 1, Article 3, commencing with Section 6. 1.8.4.3 Plan Review and Time Limitations. Subject to other provisions of law, provisions related to plan checking, prohibition of excessive delays, and contracting with or employment of private parties to perform plan checking are set forth in the State Housing Law, Health and Safety Code Section 17960.1, and for employee housing, in Health and Safety Code Section 17021.

1.8.4.3.1 Retention of Plans. The building depart- ment of every city, county, or city and county shall maintain an official copy, microfilm, or electronic or other type of photographic copy of the plans of every building, during the life of the building, for which the department issued a building permit. Exceptions: (1) Single or multiple dwellings not more than two

stories and basement in height. (2) Garages and other structures appurtenant to

buildings listed in Exception 1. (3) Farm or ranch buildings appurtenant to build-

ings listed in Exception 1. (4) Any one-story building where the span between

bearing walls does not exceed 25 feet (7620 mm), except a steel frame or concrete building. All plans for common interest developments as defined in Section 4100 of the California Civil Code shall be retained. For additional information regarding plan retention and reproduction of plans by an enforcing agency, see Health and Safety Code Sections 19850 through 19852. 1.8.4.4 Inspections. Construction or work for which a permit is required shall be subject to inspection by the building official and such construction or work shall remain accessible and exposed for inspection purposes until approved. Approval as a result of an inspection shall not be construed to be an approval of a violation of the provisions of this code or other regulations of the Department of Housing and Community Development. 1.8.5 Right of Entry for Enforcement. 1.8.5.1 General. Subject to other provisions of law, offi- cers and agents of the enforcing agency may enter and

2022 CALIFORNIA MECHANICAL CODE 9

DIVISION I CALIFORNIA ADMINISTRATION

inspect public and private properties to secure compli- ance with the rules and regulations promulgated by the Department of Housing and Community Development. For limitations and additional information regarding enforcement, see the following: (1) For applications subject to State Housing Law as

referenced in Section 1.8.3.2.1 of this code, refer to Health and Safety Code, Division 13, Part 1.5, commencing with Section 17910 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1, commencing with Section 1. (2) For applications subject to the Mobilehome Parks

Act as referenced in Section 1.8.3.2.2 of this code, refer to Health and Safety Code, Division 13, Part 2.1, commencing with Section 18200, and California Code of Regulations, Title 25, Division 1, Chapter 2, commencing with Section 1000. (3) For applications subject to the Special Occupancy

Parks Act as referenced in Section 1.8.3.2.3 of this code, refer to Health and Safety Code, Division 13, Part 2.3, commencing with Section 18860, and Cali- fornia Code of Regulations, Title 25, Division 1, Chapter 2.2, commencing with Section 2000. (4) For applications subject to the Employee Housing

Act as referenced in Section 1.8.3.2.4 of this code, refer to Health and Safety Code, Division 13, Part 1, commencing with Section 17000 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 3, commencing with Section 600. (5) For applications subject to the Factory-Built Housing

Law as referenced in Section 1.8.3.2.5 of this code, refer to Health and Safety Code, Division 13, Part 6, commencing with Section 19960 and California Code of Regulations, Title 25, Division 1, Chapter 3, Subchapter 1, commencing with Section 3000. 1.8.6 Local Modification by Ordinance or Regulation. 1.8.6.1 General. Subject to other provisions of law, a city, county, or city and county may make changes to the provi- sions adopted by the Department of Housing and Community Development. If any city, county, or city and county does not amend, add, or repeal by local ordi- nances or regulations the provisions published in this code or other regulations promulgated by the Department of Housing and Community Development, those provi- sions shall be applicable and shall become effective 180 days after publication by the California Building Stan- dards Commission. Amendments, additions, and deletions to this code adopted by a city, county, or city and county pursuant to California Health and Safety Code Sections 17958.5, 17958.7 and 18941.5, together with all appli- cable portions of this code, shall also become effective 180 days after publication of the California Building Standards Code by the California Building Standards Commission. 1.8.6.2 Findings, Filings, and Rejections of Local Modifications. Prior to making any modifications or establishing more restrictive building standards, the governing body shall make express findings and filings,

ns of this code, shall also become effective_ 180 days after publication of the California Building Standards Code by the California Building Standards Commission. 1.8.6.2 Findings, Filings, and Rejections of Local Modifications. Prior to making any modifications or establishing more restrictive building standards, the governing body shall make express findings and filings,

as required by California Health and Safety Code Section 17958.7, showing that such modifications are reasonably necessary due to local climatic, geological, or topo- graphical conditions. No modification shall become effective or operative unless the following requirements are met: (1) The express findings shall be made available as a

public record. (2) A copy of the modification and express finding, each

document marked to cross-reference the other, shall be filed with the California Building Standards Commission for a city, county, or city and county, and with the Department of Housing and Commu- nity Development for fire protection districts. (3) The California Building Standards Commission has

not rejected the modification or change. Nothing in this section shall limit the authority of fire protection districts pursuant to California Health and Safety Code Section 13869.7(a). 1.8.7 Alternate Materials, Designs, Tests, and Methods of Construction.

1.8.7.1 General. The provisions of this code as adopted by the Department of Housing and Community Develop- ment are not intended to prevent the use of any alternate material, appliance, installation, device, arrangement, design, or method of construction not specifically prescribed by this code. Consideration and approval of alternates shall comply with Section 1.8.7.2 for local building departments and Section 1.8.7.3 for the Depart- ment of Housing and Community Development. 1.8.7.2 Local Building Departments. The building department of any city, county, or city and county may approve alternates for use in the erection, construction, reconstruction, movement, enlargement, conversion, alteration, repair, removal, demolition, or arrangement of apartments, condominiums, hotels, motels, lodging houses, dwellings, or accessory structures, except for the following: (1) Structures located in mobilehome parks as defined

in California Health and Safety Code Section 18214. (2) Structures located in special occupancy parks as

defined in California Health and Safety Code Section 18862.43. (3) Factory-built housing as defined in California

Health and Safety Code Section 19971. 1.8.7.2.1 Approval of Alternates. The consideration and approval of alternates by a local building department shall comply with the following proce- dures and limitations: (1) The approval shall be granted on a case-by-

case basis. (2) Evidence shall be submitted to substantiate

claims that the proposed alternate, in perform- ance, safety, and protection of life and health,

10 2022 CALIFORNIA MECHANICAL CODE

conforms to, or is at least equivalent to, the standards contained in this code and other rules and regulations promulgated by the Department of Housing and Community Development. (3) The local building department may require tests

performed by an approved testing agency at the expense of the owner or owner’s agent as proof of compliance. (4) If the proposed alternate is related to accessi-

bility in covered multifamily dwellings or facili- ties serving covered multifamily dwellings as defined in Chapter 2 of the California Building Code, the proposed alternate must also meet the threshold set for equivalent facilitation as defined in Chapter 2 of the California Building Code. For additional information regarding approval of alternates by a local building department pursuant to the State Housing Law, see California Health and Safety Code Section 17951(e) and Cali- fornia Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1. 1.8.7.3 Department of Housing and Community Devel- opment. The Department of Housing and Community Development may approve alternates for use in the erec- tion, construction, reconstruction, movement, enlarge- ment, conversion, alteration, repair, removal, or demolition of apartments, condominiums, hotels, motels, lodging houses, dwellings, or accessory structures thereto, and permanent buildings in mobilehome parks and special occupancy parks. The consideration and approval of alter- nates shall comply with the following: (1) The department may require tests at the expense of

the owner or owner’s agent to substantiate compli- ance with the California Building Standards Code. (2) The approved alternate shall, for its intended

purpose, be at least equivalent in performance and safety to the materials, designs, tests, or methods of construction prescribed by this code. 1.8.8 Appeals Board. 1.8.8.1 General. Every city, county, or city and county shall establish a process to hear and decide appeals of orders, decisions, and determinations made by the enforcing agency relative to the application and interpretation of this code and other regulations governing construction, use, maintenance and change of occupancy. The governing body of any city, county, or city and county may establish a local appeals board and a housing appeals board to serve this purpose. Members of the appeals board(s) shall not be employees of the enforcing agency and shall be knowl- edgeable in the applicable building codes, regulations and ordinances as determined by the governing body of the city, county, or city and county.

Where no such appeals boards or agencies have been established, the governing body of the city, county, or city and county shall serve as the local appeals board or housing appeals board as specified in California Health and Safety Code Sections 17920.5 and 17920.6.

DIVISION I CALIFORNIA ADMINISTRATION

1.8.8.2 Definitions. The following terms shall for the purposes of this section have the meaning shown. Housing Appeals Board. The board or agency of a city, county, or city and county which is authorized by the governing body of the city, county, or city and county to hear appeals regarding the requirements of the city, county, or city and county relating to the use, mainte- nance, and change of occupancy of buildings and struc- tures, including requirements governing alteration, additions, repair, demolition, and moving. In any area in which there is no such board or agency, “Housing Appeals Board” means the local appeals board having jurisdiction over the area. Local Appeals Board. The board or agency of a city, county, or city and county which is authorized by the governing body of the city, county, or city and county to hear appeals regarding the building requirements of the city, county, or city and county. In any area in which there is no such board or agency, “Local Appeals Board” means the governing body of the city, county, or city and county having jurisdiction over the area. 1.8.8.3 Appeals. Except as otherwise provided by law, any person, firm, or corporation adversely affected by a decision, order, or determination by a city, county, or city and county relating to the application of building stan- dards published in the California Building Standards Code, or any other applicable rule or regulation adopted by the Department of Housing and Community Develop- ment, or any lawfully enacted ordinance by a city, county, or city and county, may appeal the issue for resolution to the local appeals board or housing appeals board as appropriate.

The local appeals board shall hear appeals relating to new building construction and the housing appeals board shall hear appeals relating to existing buildings. 1.8.9 Unsafe Buildings or Structures. 1.8.9.1 Authority to Enforce. Subject to other provisions of law, the administration, enforcement, actions, proceed- ings, abatement, violations, and penalties for unsafe buildings and structures are contained in the following statutes and regulations: (1) For applications subject to the State Housing Law

as referenced in Section 1.8.3.2.1 of this code, refer to Health and Safety Code, Division 13, Part 1.5, commencing with Section 17910 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1, commencing with Section 1. For enforcement related to accessory dwelling units, see Health and Safety Code Section 17980.12 operative until January 1, 2035. (2) For applications subject to the Mobilehome Parks

Act as referenced in Section 1.8.3.2.2 of this code, refer to Health and Safety Code, Division 13, Part 2.1, commencing with Section 18200 and California Code of Regulations, Title 25, Division 1, Chapter 2, commencing with Section 1000.

2022 CALIFORNIA MECHANICAL CODE 11

DIVISION I CALIFORNIA ADMINISTRATION

(3) For applications subject to the Special Occupancy

Parks Act as referenced in Section 1.8.3.2.3 of this code, refer to Health and Safety Code, Division 13, Part 2.3, commencing with Section 18860 and Cali- fornia Code of Regulations, Title 25, Division 1, Chapter 2.2, commencing with Section 2000. (4) For applications subject to the Employee Housing

Act as referenced in Section 1.8.3.2.4 of this code, refer to Health and Safety Code, Division 13, Part 1, commencing with Section 17000 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 3, commencing with Section 600. (5) For applications subject to the Factory-Built Housing

Law as referenced in Section 1.8.3.2.5 of this code, refer to Health and Safety Code, Division 13, Part 6, commencing with Section 19960 and California Code of Regulations, Title 25, Division 1, Chapter 3, Subchapter 1, commencing with Section 3000. 1.8.9.2 Actions and Proceedings. Subject to other provi- sions of law, punishments, penalties, and fines for viola- tions of building standards are contained in the following statutes and regulations: (1) For applications subject to the State Housing Law

as referenced in Section 1.8.3.2.1 of this code, refer to Health and Safety Code, Division 13, Part 1.5, commencing with Section 17910 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 1, commencing with Section 1. (2) For applications subject to the Mobilehome Parks

Act as referenced in Section 1.8.3.2.2 of this code, refer to Health and Safety Code, Division 13, Part 2.1, commencing with Section 18200 and California Code of Regulations, Title 25, Division 1, Chapter 2, commencing with Section 1000. (3) For applications subject to the Special Occupancy

Parks Act as referenced in Section 1.8.3.2.3 of this code, refer to Health and Safety Code, Division 13, Part 2.3, commencing with Section 18860 and Cali- fornia Code of Regulations, Title 25, Division 1, Chapter 2.2, commencing with Section 2000. (4) For applications subject to the Employee Housing

Act as referenced in Section 1.8.3.2.4 of this code, refer to Health and Safety Code, Division 13, Part 1, commencing with Section 17000 and California Code of Regulations, Title 25, Division 1, Chapter 1, Subchapter 3, commencing with Section 600. (5) For applications subject to the Factory-Built Housing

Law as referenced in Section 1.8.3.2.5 of this code, refer to Health and Safety Code, Division 13, Part 6, commencing with Section 19960 and California Code of Regulations, Title 25, Division 1, Chapter 3, Subchapter 1, commencing with Section 3000. 1.8.10 Other Building Regulations. 1.8.10.1 Existing Structures. Notwithstanding other provisions of law, the replacement, retention, and exten- sion of original materials and the use of original methods of construction for any existing building or accessory structure, or portions thereof, shall be permitted in accor-

Chapter 3,_ Subchapter 1, commencing with Section 3000. 1.8.10 Other Building Regulations. 1.8.10.1 Existing Structures. Notwithstanding other provisions of law, the replacement, retention, and exten- sion of original materials and the use of original methods of construction for any existing building or accessory structure, or portions thereof, shall be permitted in accor-

dance with the provisions of this code and the California Existing Building Code, as adopted by the Department of Housing and Community Development. For additional information, see California Health and Safety Code, Sections 17912, 17920.3, 17922 and 17958.8. 1.8.10.2 Moved Structures. Subject to the requirements of California Health and Safety Code Sections 17922, 17922.3 and 17958.9, local ordinances or regulations relating to a moved residential building or accessory structure thereto, shall permit the replacement, retention, and extension of original materials and the use of original methods of construction so long as the structure does not become or continue to be a substandard building.

1.9.0 Division of the State Architect. 1.9.1 Reserved for the Division of the State Architect – Access Compliance. 1.9.2 Division of the State Architect – Structural Safety. 1.9.2.1 DSA-SS [Division of the State Architect – Struc- tural Safety]. Application – Public elementary and secondary schools, community college buildings, and state-owned or state- leased essential services buildings. Enforcing Agency – Division of the State Architect – Structural Safety (DSA-SS).

The Division of the State Architect has been delegated the responsibility and authority by the Department of General Services to review and approve the design and oversee and observe the construction of public elementary and secondary schools, community colleges, and state- owned or state-leased essential services buildings. Authority Cited – Education Code Sections 17310 and 81142, and Health & Safety Code Section 16022. References – Education Code Sections 17280 through 17317 and 81130 through 81147, and Health & Safety Code Sections 16000 through 16023.

1.9.2.1.1 Adopting Agency Identification. The provi- sions of this code applicable to buildings identified in this Subsection 1.9.2.1 will be identified in the Matrix Adoption Tables under the acronym DSA-SS. 1.9.2.2 DSA-SS/CC [Division of the State Architect – Structural Safety/Community Colleges]. Application – Community Colleges.

The Division of the State Architect has been delegated the authority by the Department of General Services to promulgate alternate building standards for application to community colleges, which a community college may elect to use in lieu of standards promulgated by DSA-SS, in accordance with Section 1.9.2.1. Refer to Title 24, Part 2, Section 1.9.2.2. Enforcing Agency – Division of the State Architect – Structural Safety/Community Colleges (DSA-SS/CC).

tment of General Services to_ promulgate alternate building standards for application to community colleges, which a community college may elect to use in lieu of standards promulgated by DSA-SS, in accordance with Section 1.9.2.1. Refer to Title 24, Part 2, Section 1.9.2.2. Enforcing Agency – Division of the State Architect – Structural Safety/Community Colleges (DSA-SS/CC).

The Division of the State Architect has been delegated the authority by the Department of General Services to review and approve the design and oversee and observe the construction of community colleges electing to use the alternative building standards as provided in this section.

12 2022 CALIFORNIA MECHANICAL CODE

Authority Cited – Education Code Section 81053. References – Education Code Sections 81052, 81053, and 81130 through 81147.

1.9.2.2.1 Adopting Agency Identification. The provi- sions of this code applicable to buildings identified in this Subsection 1.9.2.2 will be identified in the Matrix Adoption Tables under the acronym DSA-SS/CC.

1.10.0 Office of Statewide Health Planning and Develop- ment. 1.10.1 OSHPD 1 and OSHPD 1R. Specific scope of appli- cation of the agency responsible for enforcement, enforce- ment agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 1 and OSHPD 1R Application – [OSHPD 1] General acute-care hospital buildings. [OSHPD 1R] Non-conforming hospital SPC or freestanding buildings that have been removed from acute care service. Enforcing Agency – Office of Statewide Health Plan- ning and Development (OSHPD). The office shall enforce the Division of the State Architect access compli- ance regulations and the regulations of the Office of the State Fire Marshal for the above stated facility types. 1.10.1.1 Applicable Administrative Standards: (1) Title 24, Part 1, California Code of Regulations:

Chapters 6 and 7. (2) Title 24, Part 2, California Code of Regulations:

Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II. 1.10.1.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11. Authority Cited – Health and Safety Code Sections 127010, 127015, 1275, and 129850. References – Health and Safety Code Sections 19958, 127010, 127015, 129680, 1275, and 129675 through 130070. 1.10.1.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Subsection 1.10.1 will be identified in the Matrix Adop- tion Tables under the acronym OSHPD 1, and OSHPD 1R. 1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

visions_ of this code applicable to buildings identified in this Subsection 1.10.1 will be identified in the Matrix Adop- tion Tables under the acronym OSHPD 1, and OSHPD 1R. 1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 2 Application – Skilled nursing facilities and intermediate care facility buildings. Enforcing Agency – Office of Statewide Health Plan- ning and Development (OSHPD). The office shall also enforce the Division of the State Architect access compli-

DIVISION I CALIFORNIA ADMINISTRATION

ance regulations and the regulations of the Office of the State Fire Marshal for the above stated facility type. 1.10.2.1 Applicable Administrative Standards: (1) Title 24, Part 1, California Code of Regulations:

Chapter 7. (2) Title 24, Part 2, California Code of Regulations:

Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II. 1.10.2.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10, and 11. Authority Cited – Health and Safety Code Sections 127010, 127015, 1275, and 129850. References – Health and Safety Code Sections 127010, 127015, 1275, and 129680. 1.10.2.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Subsection 1.10.2 will be identified in the Matrix Adop- tion Tables under the acronym OSHPD 2. 1.10.3 OSHPD 3. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 3 Application – Licensed clinics and any freestanding building under a hospital license where outpatient clin- ical services are provided. Enforcing Agency – Local building department. 1.10.3.1 Applicable Administrative Standards. (1) Title 24, Part 1, California Code of Regulations:

Chapter 7. (2) Title 24, Part 2, California Code of Regulations:

Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II. 1.10.3.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10, and 11. Authority Cited – Health and Safety Code Sections 127010, 127015, and 1226. References – Health and Safety Code Sections 127010, 127015, 129885, and 1226, Government Code Section 54350, and State Constitution Article 11 Section 7. 1.10.3.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Subsection 1.10.3 will be identified in the Matrix Adop- tion Tables under the acronym OSHPD 3. 1.10.4 OSHPD 4. Specific scope of application of the agency responsible for enforcement, enforcement agency, specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

2022 CALIFORNIA MECHANICAL CODE 13

DIVISION I CALIFORNIA ADMINISTRATION

OSHPD 4 Application – Correctional Treatment Centers. Enforcing Agency – Office of Statewide Health Plan- ning and Development (OSHPD). The Office shall also enforce the Division of the State Architect access compli- ance regulations and the regulations of the Office of the State Fire Marshal for the above stated facility types. 1.10.4.1 Applicable Administrative Standards: (1) Title 24, Part 1, California Code of Regulations:

Chapter 7. (2) Title 24, Part 2, California Code of Regulations:

Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II. 1.10.4.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10, and 11. Authority Cited – Health and Safety Code Sections 127010, 127015, and 129790. References – Health and Safety Code Sections 127010, 127015, 1275, and 129675 through 130070. 1.10.4.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Subsection 1.10.4 will be identified in the Matrix Adop- tion Tables under the acronym OSHPD 4. 1.10.5 OSHPD 5. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 5 Application – Acute psychiatric hospital buildings. Enforcing Agency – Office of Statewide Health Plan- ning and Development (OSHPD). The office shall also enforce the Division of the State Architect – Access Compliance regulations and the regulations of the Office of the State Fire Marshal for the above-stated facility types. 1.10.5.1 Applicable Administrative Standards. (1) Title 24, Part 1, California Code of Regulations:

Chapter 7. (2) Title 24, Part 2, California Code of Regulations:

Sections 1.1.0 and 1.10.0, Chapter 1, Division I, and as indicated in the adoption matrix for Chapter 1, Division II. 1.10.5.2 Applicable Building Standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11. Authority Cited – Health and Safety Code Sections 1275 and 129850. References – Health and Safety Code Sections 129680, 1275 and 129675 through 130070. 1.10.5.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Subsection 1.10.5 will be identified in the Matrix Adop- tion Tables under the Acronym OSHPD 5.

1 . 11.0 Office of the State Fire Marshal. 1.11.1 SFM – Office of the State Fire Marshal. Specific scope of application of the agency responsible for enforce- ment, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless other- wise stated. Application: Institutional, Educational, or any Similar Occupancy. Any building or structure used or intended for use as an asylum, jail, prison, mental hospital, hospital, sanitarium, home for the elderly, children’s nursery, children’s home or institution, school, or any similar occupancy of any capacity. Authority Cited – Health and Safety Code Section 13143. Reference – Health and Safety Code Section 13143.

Assembly or Similar Place of Assemblage. Any theater, dancehall, skating rink, auditorium, assembly hall, meeting hall, nightclub, fair building or similar place of assemblage where 50 or more persons may gather together in a building, room or structure for the purpose of amusement, entertain- ment, instruction, deliberation, worship, drinking or dining, awaiting transportation, or education. Authority Cited – Health and Safety Code Section 13143. Reference – Health and Safety Code Section 13143.

Small Family Day Care Homes. Authority Cited – Health and Safety Code Sections 1597.45, 1597.54, 13143, and 17921. Reference – Health and Safety Code Section 13143.

Large Family Day Care Homes. Authority Cited – Health and Safety Code Sections 1597.46, 1597.54, and 17921. Reference – Health and Safety Code Section 13143.

Residential Facilities and Residential Facilities for the Elderly. Authority Cited – Health and Safety Code Section 13133. Reference – Health and Safety Code Section 13143.

Any State Institution, Other State-Owned or State-Occupied Building. Authority Cited – Health and Safety Code Section 13108. Reference – Health and Safety Code Section 13143.

High-Rise Structures. Authority Cited – Health and Safety Code Section 13211. Reference – Health and Safety Code Section 13143.

Motion Picture Production Studios. Authority Cited – Health and Safety Code Section 13143.1. Reference – Health and Safety Code Section 13143.

14 2022 CALIFORNIA MECHANICAL CODE

Organized Camps. Authority Cited – Health and Safety Code Section 18897.3. Reference – Health and Safety Code Section 13143.

Residential. All hotels, motels, lodging houses, apartment houses, and dwellings, including congregate residences and buildings and structures accessory thereto. Multiple-story structures existing on January 1, 1975, let for human habita- tion, including and limited to, hotels, motels and apartment houses, less than 75 feet (22 860 mm) above the lowest floor level having building access, wherein rooms used for sleeping are let above the ground floor. Authority Cited – Health and Safety Code Sections 13143.2 and 17921. Reference – Health and Safety Code Section 13143.

Residential Care Facilities. Certified family care homes, out- of-home placement facilities, halfway houses, drug and/or alcohol rehabilitation facilities and any building or structure used or intended for use as a home or institution for the housing of any person of any age when such person is referred to or placed within such home or institution for protective social care and supervision services by any governmental agency. Authority Cited – Health and Safety Code Section 13143.6. Reference – Health and Safety Code Section 13143.

Tents, Awnings, or other Fabric Enclosures Used in Connec- tion with any Occupancy. Authority Cited – Health and Safety Code Section 13116. Reference – Health and Safety Code Section 13143.

Fire Alarm Devices, Equipment, and Systems in Connection with any Occupancy. Authority Cited – Health and Safety Code Section 13114. Reference – Health and Safety Code Section 13143.

Hazardous Materials. Authority Cited – Health and Safety Code Section 13143.9. Reference – Health and Safety Code Section 13143.

Flammable and Combustible Liquids. Authority Cited – Health and Safety Code Section 13143.6. Reference – Health and Safety Code Section 13143.

Public School Automatic Fire Detection, Alarm, and Sprin- kler Systems. Authority Cited – Health and Safety Code Section 13143 and California Education Code Article 7.5, Sections 17074.50, 17074.52, and 17074.54. References – Government Code Section 11152.5, Health and Safety Code Section 13143 and California Education Code Chapter 12.5, Leroy F. Greene School Facilities Act of 1998, Article 1.w.

DIVISION I CALIFORNIA ADMINISTRATION

Wildland-Urban Interface Fire Area. Authority Cited – Health and Safety Code Sections 13143, 13108.5(a), 18949.2(b), (c) and Government Code Section 51189. References – Health and Safety Code Sections 13143, Govern- ment Code Sections 51176, 51177, 51178, and 51179 and Public Resources Code Sections 4201 through 4204. 1.11.2 Duties and Powers of the Enforcing Agency. 1.11.2.1 Enforcement. 1.11.2.1.1 The responsibility for enforcement of building standards adopted by the State Fire Marshal and published in the California Building Standards Code relating to fire and panic safety and other regu- lations of the State Fire Marshal shall except as provided in Section 1.11.2.1.2 be as follows: (1) The city, county, or city and county with jurisdic-

tion in the area affected by the standard or regu- lation shall delegate the enforcement of the building standards relating to fire and panic safety and other regulations of the State Fire Marshal as they relate to Group R-3 occupancies, as described in Section 310.1 of Part 2 of the California Building Standards Code, to either of the following: 1.1. The chief of the fire authority of the city, county, or city and county, or an authorized representative. 1.2. The chief building official of the city, county, or city and county, or an authorized repre- sentative. (2) The chief of any city or county fire department or

of any fire protection district, and authorized representatives, shall enforce within the jurisdic- tion the building standards and other regulations of the State Fire Marshal, except those described in Item 1 or 4. (3) The State Fire Marshal shall have authority to

enforce the building standards and other regula- tions of the State Fire Marshal in areas outside of corporate cities and districts providing fire protection services. (4) The State Fire Marshal shall have authority to

enforce the building standards and other regula- tions of the State Fire Marshal in corporate cities and districts providing fire protection services on request of the chief fire official or the governing body. (5) Any fee charged pursuant to the enforcement

authority of this section shall not exceed the estimated reasonable cost of providing the service for which the fee is charged pursuant to Section 66014 of the Government Code. 1.11.2.1.2 Pursuant to Health and Safety Code Section 13108, and except as otherwise provided in this section, building standards adopted by the State Fire Marshal published in the California Building Standards Code relating to fire and panic safety

2022 CALIFORNIA MECHANICAL CODE 15

DIVISION I CALIFORNIA ADMINISTRATION

shall be enforced by the State Fire Marshal in all state-owned buildings, state-occupied buildings, and state institutions throughout the state. Upon the written request of the chief fire official of any city, county or fire protection district, the State Fire Marshal may authorize such chief fire official and his or her authorized representatives, in their geographical area of responsibility, to make fire prevention inspections of state-owned or state-occu- pied buildings, other than state institutions, for the purpose of enforcing the regulations relating to fire and panic safety adopted by the State Fire Marshal pursuant to this section and building standards relating to fire and panic safety published in the California Building Standards Code. Authorization from the State Fire Marshal shall be limited to those fire departments or fire districts which maintain a fire prevention bureau staffed by paid personnel.

Pursuant to Health and Safety Code Section 13108, any requirement or order made by any chief fire official who is authorized by the State Fire Marshal to make fire prevention inspections of state- owned or state-occupied buildings, other than state institutions, may be appealed to the State Fire Marshal. The State Fire Marshal shall, upon receiving an appeal and subject to the provisions of Chapter 5 (commencing with Section 18945) of Part 2.5 of Division 13 of the Health and Safety Code, determine if the requirement or order made is reasonably consistent with the fire and panic safety regulations adopted by the State Fire Marshal and building standards relating to fire and panic safety published in the California Building Code.

Any person may request a code interpretation from the State Fire Marshal relative to the intent of any regulation or provision adopted by the State Fire Marshal. When the request relates to a specific project, occupancy or building, the State Fire Marshal shall review the issue with the appropriate local enforcing agency prior to rendering such code interpretation. 1.11.2.1.3 Pursuant to Health and Safety Code Section 13112, any person who violates any order, rule or regulation of the State Fire Marshal is guilty of a misdemeanor punishable by a fine of not less than $100.00 or more than $500.00, or by impris- onment for not less than six months, or by both. A person is guilty of a separate offense each day during which he or she commits, continues or permits a violation of any provision of, or any order, rule or regulation of, the State Fire Marshal as contained in this code.

Any inspection authority who, in the exercise of his or her authority as a deputy State Fire Marshal, causes any legal complaints to be filed or any arrest to be made shall notify the State Fire Marshal imme- diately following such action.

1.11.2.2 Right of Entry. The fire chief of any city, county, or fire protection district, or such person’s authorized representative, may enter any state institution or any other state-owned or state-occupied building for the purpose of preparing a fire suppression preplanning program or for the purpose of investigating any fire in a state-occupied building.

The State Fire Marshal, his or her deputies or salaried assistants, the chief of any city or county fire department or fire protection district and his or her authorized representatives may enter any building or premises not used for dwelling purposes at any reason- able hour for the purpose of enforcing this chapter. The owner, lessee, manager or operator of any such building or premises shall permit the State Fire Marshal, his or her deputies or salaried assistants and the chief of any city or county fire department or fire protection district and his or her authorized representatives to enter and inspect them at the time and for the purpose stated in this section. 1.11.2.3 More Restrictive Fire and Panic Safety Building Standards.

such building_ or premises shall permit the State Fire Marshal, his or her deputies or salaried assistants and the chief of any city or county fire department or fire protection district and his or her authorized representatives to enter and inspect them at the time and for the purpose stated in this section. 1.11.2.3 More Restrictive Fire and Panic Safety Building Standards.

1.11.2.3.1 Any fire protection district organized pursuant to Health and Safety Code Part 2.7 (commencing with Section 13800) of Division 12 may adopt building standards relating to fire and panic safety that are more stringent than those building standards adopted by the State Fire Marshal and contained in the California Building Standards Code. For these purposes, the district board shall be deemed a legislative body and the district shall be deemed a local agency. Any changes or modifications that are more stringent than the requirements published in the California Building Standards Code relating to fire and panic safety shall be subject to Section 1.1.8.1. 1.11.2.3.2 Any fire protection district that proposes to adopt an ordinance pursuant to this section shall, not less than 30 days prior to noticing a proposed ordi- nance for public hearing, provide a copy of that ordi- nance, together with the adopted findings made pursuant to Section 1.11.2.3.1, to the city, county, or city and county where the ordinance will apply. The city, county, or city and county may provide the district with written comments, which shall become part of the fire protection district’s public hearing record. 1.11.2.3.3 The fire protection district shall transmit the adopted ordinance to the city, county, or city and county where the ordinance will apply. The legisla- tive body of the city, county, or city and county may ratify, modify or deny an adopted ordinance and transmit its determination to the district within 15 days of the determination. Any modification or denial of an adopted ordinance shall include a written state- ment describing the reasons for any modifications or denial. No ordinance adopted by the district shall be effective until ratification by the city, county, or city and county where the ordinance will apply. Upon rati- fication of an adopted ordinance, the city, county, or city and county shall file a copy of the findings of the district, and any findings of the city, county, or city

16 2022 CALIFORNIA MECHANICAL CODE

and county, together with the adopted ordinance expressly marked and identified to which each finding refers, in accordance with Section 1.1.8.1, Item 3. 1.11.2.4 Request for Alternate Means of Protection. Requests for approval to use an alternative material, assembly or materials, equipment, method of construction, method of installation of equipment or means of protec- tion shall be made in writing to the enforcing agency by the owner or the owner’s authorized representative and shall be accompanied by a full statement of the conditions. Sufficient evidence or proof shall be submitted to substan- tiate any claim that may be made regarding its confor- mance. The enforcing agency may require tests and the submission of a test report from an approved testing organization as set forth in Title 19, California Code of Regulation, to substantiate the equivalency of the proposed alternative means of protection.

When a request for alternate means of protection involves hazardous materials, the authority having juris- diction may consider implementation of the findings and recommendations identified in a Risk Management Plan (RMP) developed in accordance with Title 19, Division 2, Chapter 4.5, Article 3.

Approval of a request for use of an alternative mate- rial, assembly of materials, equipment, method of construction, method of installation of equipment, or means of protection made pursuant to these provisions shall be limited to the particular case covered by request and shall not be construed as establishing any precedent for any future request. 1.11.2.5 Appeals. When a request for an alternate means of protection has been denied by the enforcing agency, the applicant may file a written appeal to the State Fire Marshal for consideration of the applicant’s proposal. In considering such appeal, the State Fire Marshal may seek the advice of the State Board of Fire Services. The State Fire Marshal shall, after considering all of the facts presented, including any recommendations of the State Board of Fire Services, determine if the proposal is for the purposes intended, at least equivalent to that specified in these regulations in quality, strength, effectiveness, fire resistance, durability and safety, and shall transmit such findings and any recommendations to the applicant and to the enforcing agency. 1.11.3 Construction Documents. 1.11.3.1 Public Schools. Plans and specifications for the construction, alteration, or addition to any building owned, leased, or rented by any public school district shall be submitted to the Division of the State Architect. 1.11.3.2 Movable Walls and Partitions. Plans or diagrams shall be submitted to the enforcing agency for approval before the installation of, or rearrangement of, any movable wall or partition in any occupancy. Approval shall be granted only if there is no increase in the fire hazard. 1.11.3.3 New Construction High-Rise Buildings: (1) Complete plans or specifications, or both, shall be

prepared covering all work required to comply with

DIVISION I CALIFORNIA ADMINISTRATION

new construction high-rise buildings. Such plans and specifications shall be submitted to the enforcing agency having jurisdiction. (2) All plans and specifications shall be prepared under

the responsible charge of an architect or a civil or structural engineer authorized by law to develop construction plans and specifications, or by both such architect and engineer. Plans and specifications shall be prepared by an engineer duly qualified in that branch of engineering necessary to perform such serv- ices. Administration of the work of construction shall be under the charge of the responsible architect or engineer except that where plans and specifications involve alterations or repairs, such work of construc- tion may be administered by an engineer duly quali- fied to perform such services and holding a valid certificate under Chapter 7 (commencing with Section 65700) of Division 3 of the Business and Professions Code for performance of services in that branch of engineering in which said plans, specifications and estimates and work of construction are applicable. This section shall not be construed as preventing the design of fire-extinguishing systems by persons holding a C-16 license issued pursuant to Division 3, Chapter 9, Business and Professions Code. In such instances, however, the responsibility charge of this section shall prevail. 1.11.3.4 Existing High-Rise Buildings: (1) Complete plans or specifications, or both, shall be

prepared covering all work required by Section 3412 for existing high-rise buildings. Such plans or specifi- cations shall be submitted to the enforcing agency having jurisdiction. (2) When new construction is required to conform with

the provisions of these regulations, complete plans or specifications, or both, shall be prepared in accor- dance with the provisions of this subsection. As used in this section, “new construction” is not intended to include repairs, replacements or minor alterations which do not disrupt or appreciably add to or affect the structural aspects of the building. 1.11.3.5 Retention of Plans. Refer to Building Standards Law, Health and Safety Code Sections 19850 and 19851 for permanent retention of plans. 1.11.4 Fees. 1.11.4.1 Other Fees. Pursuant to Health and Safety Code Section 13146.2, a city, county, or district which inspects a hotel, motel, lodging house, or apartment house may charge and collect a fee for the inspection from the owner of the structure in an amount, as determined by the city, county or district, sufficient to pay its costs of that inspec- tion. 1.11.4.2 Large Family Day Care. Pursuant to Health and Safety Code Section 1597.46, Large Family Day Care Homes, the local government shall process any required permit as economically as possible, and fees charged for review shall not exceed the costs of the review and permit process.

2022 CALIFORNIA MECHANICAL CODE 17

DIVISION I CALIFORNIA ADMINISTRATION

1.11.4.3 High-Rise. Pursuant to Health and Safety Code Section 13217, High-rise Structure Inspection: Fees and costs, a local agency which inspects a high-rise structure pursuant to Health and Safety Code Section 13217 may charge and collect a fee for the inspection from the owner of the high-rise structure in an amount, as determined by the local agency, sufficient to pay its costs of that inspec- tion. 1.11.4.4 Fire Clearance Preinspection. Pursuant to Health and Safety Code Section 13235, Fire Clearance Prein- spection fee, upon receipt of a request from a prospective licensee of a community care facility, as defined in Section 1502, of a residential care facility for the elderly, as defined in Section 1569.2, or of a child day care facility, as defined in Section 1596.750, the local fire enforcing agency, as defined in Section 13244, or State Fire Marshal, whichever has primary jurisdiction, shall conduct a preinspection of the facility prior to the final fire clearance approval. At the time of the preinspection, the primary fire enforcing agency shall price consultation and interpretation of the fire safety regulations and shall notify the prospective licensee of the facility in writing of the specific fire safety regulations which shall be enforced in order to obtain fire clearance approval. A fee equal to, but not exceeding, the actual cost of the preinspection services may be charged for the prein- spection of a facility. 1.11.4.5 Care Facilities. The primary fire enforcing agency shall complete the final fire clearance inspection for a community care facility, residential care facility for the elderly, or child day care facility within 30 days of receipt of the request for the final inspection, or as of the date the prospective facility requests the final prelicensure inspec- tion by the State Department of Social Services, whichever is later.

Pursuant to Health and Safety Code Section 13235, a preinspection fee equal to, but not exceeding, the actual cost of the preinspection services may be charged for the preinspection of a facility.

Pursuant to Health and Safety Code Section 13131.5, a reasonable final inspection fee, not to exceed the actual cost of inspection services necessary to complete a final inspection may be charged for occupancies classified as Residential Care Facilities for the Elderly (RCFE).

Pursuant to Health and Safety Code Section 1569.84, neither the State Fire Marshal nor any local public entity shall charge any fee for enforcing fire inspection regula- tions pursuant to state law or regulation or local ordinance, with respect to Residential Care Facilities for the Elderly (RCFE) which service six or fewer persons. 1.11.4.6 Requests of the Office of the State Fire Marshal. Whenever a local authority having jurisdiction requests that the State Fire Marshal perform plan review and/or inspection services related to a building permit, the appli- cable fees for such shall be payable to the Office of the State Fire Marshal. 1.11.5 Inspections. Work performed subject to the provisions of this code shall comply with the inspection requirements of Title

24, Part 2, California Building Standards Code, Sections 109.1, 109.3, 109.3.4, 109.3.5, 109.3.6, 109.3.8, 109.3.9, 109.3.10, 109.5, and 109.6 as adopted by the Office of the State Fire Marshal.

1.11.5.1 Existing Group I-1 or R Occupancies. Licensed 24-hour care in a Group I-1 or R occupancy in existence and originally classified under previously adopted state codes shall be reinspected under the appropriate previous code, provided there is no change in the use or character which would place the facility in a different occupancy group. 1.11.6 Certificate of Occupancy. A Certificate of Occupancy shall be issued as specified in Title 24, Part 2, California Building Code, Section 111. Exception: Certificates of occupancy are not required for work exempt from permits in accordance with Section 105.2 of the California Building Code. 1.11.7 Temporary Structures and Uses. See Title 24, Part 2, California Building Code, Section 108. 1.11.8 Service Utilities. See Title 24, Part 2, California Building Code, Section 112. 1.11.9 Stop Work Order. See Title 24, Part 2, California Building Code, Section 115. 1.11.10 Unsafe Buildings, Structures, and Equipment. See Title 24, Part 2, California Building Code, Section 116. 1.11.11 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Section 1.11.0 will be identified in the Matrix Adoption Tables under the acronym SFM.

1.12.0 Reserved for the State Librarian.

1.13.0 Reserved for the Department of Water Resources.

1.14.0 Reserved for the State Lands Commission.

18 2022 CALIFORNIA MECHANICAL CODE

DIVISION II

ADMINISTRATION