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 UPC 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 section that a state agency has amended and/or added within a particular chapter is listed. There will be an “X” under an agency’s acronym in the row of the amended and/or added section.

Example:

CALIFORNIA PLUMBING 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.)

CALIFORNIA PLUMBING 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.)

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

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 PLUMBING 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 2025 CALIFORNIA PLUMBING CODE

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HOW TO DISTINGUISH MODEL CODE LANGUAGE FROM CALIFORNIA AMENDMENTS

[BSC]

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.

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.

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

Important Notices and Disclaimers The 2024 edition of the Uniform Plumbing 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 plumbing 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.

To access information for a specific code or to determine whether an IAPMO code has been amended through the issuance of Tentative Interim Amendments or corrected by Errata, please visit the IAPMO codes information page on the IAPMO’s website (https://www.iapmo.org/codedevelopment). The codes information page provides a list of IAPMO codes with up-to-date, specific information including any issued Tentative Interim Amendments and Errata.

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FOREWORD

Origin and Development The advantages of a statewide adopted Uniform Plumbing Code are recognized throughout the industry. Disorder in the industry because of widely divergent plumbing practices and the use of many different, often conflicting, plumbing codes by local jurisdictions influenced the Western Plumbing Officials Association (now the International Association of Plumbing and Mechanical Officials [IAPMO]) to form a committee. This committee of plumbing inspectors, master and journeyman plumbers, and plumbing engineers, backed by public utility companies and the plumbing industry to create a basic plumbing document for general use. The product of this effort, the first edition of the Uniform Plumbing Code [®] (UPC [®] ) was adopted by IAPMO in 1945. The widespread use of this code over the past seven decades by jurisdictions throughout the United States and internationally is testament to its merit.

Publishing of the 2003 Uniform Plumbing Code was a significant milestone because it was the first time in the history of the United States a plumbing code was developed through a true consensus process. The 2024 edition represents the most current approaches in the plumbing field and is the eighth 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.

h a true consensus process. The 2024 edition represents the most current approaches in the plumbing field and is the eighth 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 Plumbing Code provides consumers with safe and sanitary plumbing 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 Plumbing Code is dedicated to all those who, in working to achieve “the ultimate plumbing code,” have unselfishly devoted their time, effort, and personal funds to create and maintain this, the finest plumbing code in existence today.

The Uniform Plumbing Code updates every three years in revision cycles that begin twice each year that takes two years to complete.

Each revision cycle advances according to a published schedule that includes final dates for all major events and contains four basic steps as follows:

1. Proposal Stage;
2. Comment Stage;
3. Association Technical Meeting;
4. Council Appeals and Issuance of Code.

IAPMO develops “full consensus” codes built on a foundation of maximum participation and agreement by a broad range of interests. This philosophy has led to producing technically sound codes that promote health and safety, yet do not stifle design or development.

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

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

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FOREWORD

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

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

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

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

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

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

s not the complete and official position of the NFPA on the reference subject, which is represented solely by the relevant standard in its entirety. NFPA standards can be accessed at www.nfpa.org. In addition, this extracted material may include revisions or modifications developed through IAPMO’s standards development process. Therefore, NFPA disclaims responsibility for the content of this code.

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

xii 2025 CALIFORNIA PLUMBING CODE

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FORMAT OF THE UNIFORM PLUMBING CODE

The format of the Uniform Plumbing Code (UPC) 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:

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FORMAT OF THE UNIFORM PLUMBING CODE

The following is a summary of the scope and intent of the provisions addressed within the chapters and appendices of the Uniform Plumbing 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 plumbing 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 plumbing 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 plumbing 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.

Chapter 3 General Regulations.

Chapter 3 regulates the general requirements, not specific to other chapters, for installing plumbing systems. Many regulations are not specific plumbing requirements but relate to the overall plumbing system. This chapter contains safety requirements for installing plumbing and also contains nonplumbing requirements for identifying pipes, pipe fittings, traps, fixtures, materials, and devices used in plumbing systems. Listing method of approval, based on applicable nationally recognized standards, for the safe and proper installation of plumbing systems, is essential to ensure the 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 Plumbing Fixtures and Fixture Fittings.

This chapter regulates the minimum number of plumbing fixtures of a specific type and quality for each building. The fixtures must be properly installed to be usable by the individuals occupying the building. The quality and design of every fixture must conform to the applicable referenced standard. Compliance with this chapter will result in a building or structure having acceptable plumbing fixtures for the sanitary, hygienic, cleaning, washing, and food preparation needs of the occupants. In addition to ensuring resilient fixtures, the chapter also takes into consideration gender-neutral facilities and contains provisions for privacy compartments.

orm to the applicable referenced standard. Compliance with this chapter will result in a building or structure having acceptable plumbing fixtures for the sanitary, hygienic, cleaning, washing, and food preparation needs of the occupants. In addition to ensuring resilient fixtures, the chapter also takes into consideration gender-neutral facilities and contains provisions for privacy compartments.

Chapter 5 Water Heaters.

Chapter 5 regulates the design, approval, installation, and safety devices of fuel burning and other types of water heaters with the combustion air requirements for ventilation and dilution of flue gases for appliances installed in buildings. This chapter does not apply to direct-vent appliances. In addition, this chapter regulates the design, construction, installation, and maintenance of chimneys, vents, and their connections to fuel-burning appliances. Methods to supply combustion air may be supplied from an indoor air supply, outdoor air supply, a combination of indoor and outdoor air supply, mechanical air supply, or an engineered system. Combustion air provisions are based on the number of openings and the total opening size required based on the total energy input rating of the appliance. An acceptable air supply for combustion and ventilation is necessary for the proper operation of fuel-burning appliances. A shortage of combustion air can result in incomplete combustion and the production of poisonous gases, such as carbon monoxide or appliance overheating. Ventilation air provides cooling for the appliance casing and internal controls. Inadequate ventilation of the space in which an appliance is installed can result in increased surrounding temperatures that stress the appliance itself or other appliances in the vicinity.

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FORMAT OF THE UNIFORM PLUMBING CODE

Chapter 6 Water Supply and Distribution.

Chapter 6 regulates the design, material, and installation of water supply and distribution systems, including residential fire sprinklers. The water supply and distribution system is designed to achieve the correct water pressure and flow rates and avoid cross-connections. For fixtures to perform properly, an acceptable supply of potable water is essential to their operation and use. Cross-connections and backflow are ranked as the highest priority because of the long history of recognized health risks posed by cross-connections, outbreaks, or cases of waterborne disease. Piping materials and components are evaluated for their possible effect on the potable water with which they are in contact. The intent is to control the potential adverse health effects produced by indirect additives, products, and materials that come in contact with potable water. When selecting materials for water supply and distribution systems, consider water pressure, water temperature, compatibility with the water supply, durability, support, and sustainability.

n the potable water with which they are in contact. The intent is to control the potential adverse health effects produced by indirect additives, products, and materials that come in contact with potable water. When selecting materials for water supply and distribution systems, consider water pressure, water temperature, compatibility with the water supply, durability, support, and sustainability.

In addition, this chapter regulates the design, location, materials, and installation of multipurpose and stand-alone sprinkler systems that do not include the use of antifreeze. Where systems are installed as a portion of the water distribution system under the requirements of this chapter and are not provided with a fire department connection, backflow protection for the water supply system is not required.

Chapter 7 Sanitary Drainage.

This chapter regulates the design and installation of sanitary drainage systems to ensure they will work as intended. Drainage piping should not be oversized nor undersized, and constructed of approved materials to guard against fouling, deposit of solids, clogging, and with cleanouts so arranged that the pipes may be readily cleaned. The purpose of the sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment to an approved point of disposal, such as a public sanitary system or private sewage disposal system.

The basics of a sanitary drainage system include public and private sewage disposal; selection of materials; installation of the building drain and sewer; joining methods for pipe and fittings; drainage fixture units for sizing the drainage system; sumps and ejectors; vent sizing and length of vents; and testing.

Chapter 8 Indirect Wastes.

Chapter 8 regulates indirect waste connections that are required for plumbing fixtures and plumbing appliances dealing with food preparation, dishwashing, potable liquids, and similar equipment. An indirect connection prevents sewage from backing up into a fixture or appliance, thus providing protection against potential health hazards. The waste pipe discharges through an air gap or air break into a waste receptor or standpipe. The protection in the form of an air gap is necessary when the contamination is a potential health hazard or cross connection with the potable water system. Where there is no possibility of contaminating the potable water (nonpotable discharge), the indirect waste pipe may connect in the form of an air break. This method is often preferred to prevent splashing. In addition, health care facilities and special wastes must be protected from contamination that may result from the connection to the drainage system. The waste must be treated to prevent any damage to the piping or sewage treatment process. Waste receptors are sized and designed to prevent splashing and allow for peak discharge conditions.

Chapter 9 Vents.

Chapter 9 regulates the material, design, and installation of vents. A vent system is a pipe or pipes installed in a drainage system that provide a flow of air to and from the system to ventilate it, provide a circulation of air to eliminate trap siphonage, and reduce back-pressure and vacuum surge. In addition, vents provide the rapid and silent flow of waste without exposing occupants of the building to any sewer gases. Proper installation of vents is crucial, as a telltale sign that there is a problem in the drain and vent system is related to the elevation of the horizontal portion of the venting. Venting is not limited to sanitary drainage systems. Venting methods are applicable to other drainage systems such as those for chemical waste, graywater waste, and clear water waste. Sizing the venting system is directly tied to the design of the drainage system. For example, the velocities in the drainage system and its peak flow rates affect the diameters in the venting system. Where the vertical distance between a fixture outlet and trap is excessive, velocities in the entire drainage system will be greater than those in the vent sizing table. All venting methods in this chapter are categorized as either dry vents or wet vents. Vent stacks, stack vents, branch vents, island vents, relief vents, and individual vents are dry vents. Wet vents (horizontal or vertical), circuit vents, combination drain and vents are versions of “wet venting” in which the vent is wetted by drainage flow.

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FORMAT OF THE UNIFORM PLUMBING CODE

Chapter 10 Traps and Interceptors.

Chapter 10 regulates the material, design, and installation of traps, interceptors, and separators. Traps are required on drainage type plumbing fixtures and must be self-scouring without interior partitions. Interceptors, on the other hand, are designed to control what goes down a drain. Interceptors are used to keep harmful substances from entering the sanitary drainage system, such as grease, sand, oil and other materials. The retained materials need periodic removal to maintain efficiency and function of the separating device. The capacity of an interceptor is based on retention and flow rate. There are many types of interceptors that are used at beauty salons, hospitals, meat, fish or foul packaging, refineries, repair garages, gas stations, car washing facilities, various plants, factories, and processing sites. The designer of the building is responsible for locating interceptors with the expectation for the frequency of maintenance, ease of cleaning and floor space for equipment.

Chapter 11 Storm Drainage.

Chapter 11 regulates the removal of stormwater from roofs, yards, paved areas, and similar areas. The objective of storm drainage systems is to provide a conduit or channel through which runoff will be carried from a point of collection to a point of disposal; this protects the property and the public from the uncontrolled flow of runoff and ensures that drains and inlets are adequately sized to receive the volume of runoff that flows to the drains. For the purpose of system design, it’s necessary to specify the duration of a selected storm. All methods used to determine volumes and peak flow use historical data. Drain location must be coordinated with the architectural design of the building. When selecting the type of roof drain to use, the roof construction and its thickness, along with the intended use of the roof, are required. Where the roof perimeter extends above the roof in such a manner that water is entrapped and causes ponding, or if any portion of the roof is designed so water can pond, secondary drainage is required. Where secondary drainage is required, scuppers, or a secondary system of roof drains and pipes, are installed to prevent the accumulation of excessive rainwater.

Chapter 12 Fuel Gas Piping.

Chapter 12 regulates the installation of gas piping 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.

Chapter 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems.

Chapter 13 regulates the installation, inspection, testing, maintenance, performance, and safe practices for medical gas and vacuum systems located in health care facilities. This chapter addresses the installation and maintenance of health care fixtures, devices, and equipment. The purpose of medical gas and medical vacuum systems is to provide safe and sufficient flows at required pressures to the medical gas outlet or vacuum inlet terminals. System design and layout should allow convenient access by the medical staff to outlet and inlet terminals, valves, and equipment during patient care or emergencies, as safety is of primary concern.

Chapter 14 Firestop Protection.

Chapter 14 regulates piping penetrations of fire-resistance-rated walls, partitions, floors, floor and ceiling assemblies, roof and ceiling assemblies, or shaft enclosures through firestopping. To firestop is to create a physical barrier that impedes the spread of smoke, gases, and flames from one compartment in the building design to the next. The firestop is seen as a part that is essential to protecting the lives of people who live or work in the structure, increasing the chances of not succumbing to smoke or gases before they are able to evacuate the building. Fireproofing of this type helps to restore the fire-resistant properties of the building materials before the openings were created as part of the construction process.

Chapter 15 Alternate Water Sources for Nonpotable Applications.

Chapter 15 regulates gray water sources, reclaimed (recycled) water sources and on-site treated nonpotable water systems. Water sources include subsurface irrigation, subsoil irrigation, and mulch basin systems. Subsoil water irrigation provides a means to disperse shallow drip irrigation lines and mulch basins that collect and spread water in various applications. The

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FORMAT OF THE UNIFORM PLUMBING CODE

reclaimed water provisions to on-site nonpotable water systems include gray water and other nonpotable water sources that are used for on-site applications. Water reuse is integral to sustainable water management because it allows water to remain in the environment and be preserved for future use while meeting the water requirements of the present. Water reuse reduces energy use by removing added potable water treatment, offsetting water demands, and providing water for energy production.

Chapter 16 Nonpotable Rainwater Catchment Systems.

Chapter 16 regulates nonpotable rainwater catchment systems that include irrigation; toilet and urinal flushing with proper treatment; provisions where permits are required; maintenance of alternate water sources; and minimum water quality. This chapter provides guidance on how to optimize rainwater use while ensuring there is a decrease of risk to consumers from poor design, installation, and maintenance. Rainwater harvesting is the process of capturing, channeling, and storing water runoff for later use. Most systems are constructed of three principal components: the catchment area, the collection device, and the conveyance system.

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 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 Recommended Rules for Sizing the Water Supply System.

Appendix A provides a method of sizing the water supply and distribution system that provides precise calculations to establish the proper pressures and flow to the system’s fixtures. The goal of sizing the system is to deliver an acceptable volume of water to the most hydraulically remote fixture during minimum pressure and maximum flow conditions; provide satisfactory water pressure to the most hydraulically remote fixture during minimum pressure and maximum flow conditions; and to prevent excessive water velocity during maximum flow conditions.

Appendix B Explanatory Notes on Combination Waste and Vent Systems.

Appendix B contains general guidelines for the design and installation of combination waste and vent systems. These systems are designed for waste piping and are purposely oversized to serve as both a waste and vent pipe to avoid excessive pneumatic effects at fixture drains.

Appendix C Alternate Plumbing Systems.

The intent of this appendix is to provide clarification of procedures for the design and approval of engineered plumbing systems, alternate materials, and equipment that are not specifically covered in other parts of the code. Alternative methods are allowed to be used where approved by the authority having jurisdiction. Approval of alternatives is based on a demonstration showing that the method or material used is at least equivalent in strength, deflection, and capacity to that provided by the prescriptive methods and materials.

Appendix D Sizing Storm Water Drainage Systems.

Appendix D provides general guidelines for the sizing of stormwater drainage systems. There are two pieces of information that must always be a given. They are the roof size and the rate of rainfall for the area.

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FORMAT OF THE UNIFORM PLUMBING CODE

Appendix E Manufactured/Mobile Home Parks and Recreational Vehicle Parks.

The provisions of this appendix apply to the plumbing and drainage systems of mobile home and recreational vehicle parks. These provisions also apply to the use, maintenance, and installation for supplying fuel gas, water, electricity, and disposal of sewage from accessory buildings or structures, and building components.

Appendix F Firefighter Breathing Air Replenishment Systems.

Appendix F provides guidance on installing firefighter breathing air replenishment systems. System components include outside fire department connection panel, interior air fill panel or station, interconnected piping distribution system and pressure monitoring switch. Fire departments access the system through an outside connection panel and are able to pump air into the system. The firefighters inside the structure access the system at fill stations that are found throughout the building. The piping distribution system is made from stainless tubing or other approved materials. It delivers compressed air to the building’s interior air-fill stations and interior air-fill panels. The tubing also acts as a conduit in the interior of the building between the outside connection panel and the air storage system. If the system becomes over-pressurized, the air monitoring system also acts as a pressure relief. A system isolation valve is placed alongside each interior air fill station and interior air fill panel to isolate the system.

Appendix G Sizing of Venting Systems.

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 5.

Appendix H Private Sewage Disposal Systems.

Appendix H provides general guidelines for the materials, design, and installation of new or existing private sewage disposal systems. Where a building cannot be served by a public sewer system, the building site must be provided with a system for treating the wastewater generated from the use of plumbing fixtures in the building. The appendix addresses site evaluations, materials, soil absorption systems, holding tanks, cesspools, and on-site wastewater treatment systems. Private sewage disposal systems must be designed based on the soil conditions, constructed using approved materials, and installed according to prescribed dimensions.

Appendix I Installation Standards.

Installation standards are industry standards that specify procedures for the installation of plumbing and mechanical products, and the inspection methods and procedures employed for the examination of such systems. These comprehensive standards add detailed information and guidance that a manufacturer or product installation instructions may not fully address. These standards give the user confidence with options from industry experts for installing plumbing products and assemblies in a safe and professional manner.

Appendix J Combination of Indoor and Outdoor Combustion and Ventilation Opening Design.

Appendix J provides an example of how to determine the required combination of indoor and outdoor combustion air opening sizes for appliances. The combustion air example also provides a table that contains the required volume of a space per the appliance Btu/h input that is based on the standard method.

Appendix K Potable Rainwater Catchment Systems.

Potable rainwater catchment system is defined as a system that uses the principal of collecting and using rain from a rooftop or other man-made, aboveground collection surface. This appendix applies to new rainwater catchment installations, as well as changes, additions, maintenance, and repairs to existing installations. Rainwater harvesting is the practice of collecting the water produced during rainfall events before it has a chance to run off into a river or stream or soak into the ground and become groundwater.

Appendix L 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 plumbing 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.

xviii 2025 CALIFORNIA PLUMBING CODE

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FORMAT OF THE UNIFORM PLUMBING CODE

Appendix M Peak Water Demand Calculator.

This appendix provides a method for estimating the demand load for the building water supply and principal branches for single- and multi-family dwellings with water-conserving plumbing fixtures, fixture fittings, and appliances.

Appendix N Impact Of Water Temperature On The Potential For Scalding And Legionella Growth.

Legionnaires’ disease is a serious issue that is a threat to many citizens. It is known that the higher the temperature, the lower the risk for Legionella growth, but the higher the temperature, the higher the possibility for scalding. This appendix addresses Legionella growth potential and scald potential within specified temperature ranges. It contains definitions for terms used to describe water temperatures such as cold, tepid, warm, tempered hot, and disinfecting hot. Since plumbing systems operate within various temperature ranges, the public has a document that identifies such temperature ranges and the “potential” dangers within these temperature ranges.

Appendix O Non-Sewered Sanitation Systems.

This appendix contains provisions on non-sewered sanitation systems which are suitable for use in temporary or permanent settlements, including refugee camps, and are equally suited to both public and private use in isolated locations. Additionally, the appendix provides general safety and performance requirements for design and testing of non-sewered sanitation systems for prefabricated integrated treatment units. These systems will apply to any integrated sanitation system that is not attached to a sewer.

Appendix P Professional Qualifications.

Appendix P provides a baseline of knowledge for installers, inspectors, or employers working with and around the systems covered within the scope of this code to keep all persons safe and healthy.

Appendix Q Indoor Horticultural Facilities.

Appendix Q addresses plumbing systems for horticultural cultivation and processing of plants for human ingestion, inhalation, and topical application. The appendix provisions apply to primary and secondary horticultural facilities. Primary horticultural facilities are devoted to the growing and/or harvesting of plants. Cultivation rooms are located within these facilities, while a secondary horticultural facility is devoted to the harvesting (such as hulling or shelling), packing, and/or holding of plants.

Appendix R Tiny Houses.

Appendix R guidance for the tiny house communities including regulations for fixtures, approved materials, and provisions for protecting the potable water system. This appendix serves as a foundation to establish safe practices and requirements that will provide a safe, healthy, and reliable plumbing system for the tiny house.

Appendix S Onsite Stormwater Treatment Systems.

Appendix S provides provisions for the water quality, monitoring, design, construction, alteration, repair, and operation requirements of onsite stormwater treatment systems for nonpotable use.

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

SAMPLE LEGISLATION FOR ADOPTION OF THE UNIFORM PLUMBING CODE

The Uniform Codes are designed to be adopted by jurisdictions through an ordinance. Jurisdictions wishing to adopt the 2024 Uniform Plumbing Code as an enforceable regulation governing plumbing 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 2024 edition of the Uniform Plumbing Code, regulating and controlling the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing 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 2024 Uniform Plumbing 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 plumbing 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 2024 Uniform Plumbing 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 plumbing 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.

, 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.

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COMMITTEE ON UNIFORM PLUMBING 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, Chairperson CJ Erickson Plumbing Company [I/M]

JT Baca, State of New Mexico [E] Laura Ceja, United Association [L] Rick Coffman, City of Cedar Falls, Retired [C] Marty Cooper, Vice Chairperson, City of Foster City [E]

Jim Imprescia, City of Leominster [E] Doug Marian, District Council 16 [L] Jim Stack, Stack Plumbing, Inc. [I/M] Don Summers, Plumber’s & Pipefitters Training Center [L]

Nonvoting

Gabriella M. Davis, Secretary, IAPMO Hugo Aguilar, Recording Secretary, IAPMO

IAPMO Uniform Plumbing Code Technical Committee Dan Daniels, Chairperson, Self [C]

Bob Adler, 4Leaf, Inc. [E] Sarah Aguilar, McCabe Plumbing [I/M] Rawand Aryan, City of Los Angeles Department of Building & Safety [E] Julius Ballanco, JB Engineering & Code Consulting [SE] DJ Berger, National ITC Corporation [U] Gary Bonetti, UA Local #342 JATC [L] Jeremy Brown, NSF International [R/S/T] Michael Cudahy, Plastic Pipe & Fittings Association (PPFA) [M] Pennie Feehan, Copper Development Association (CDA) [M] Brian Fenty, Self [E] Ed Gormley, Gormley Plumbing & Mechanical [I/M] Lingyan Gorsuch, Arup [SE]

Engineering & Code Consulting [SE] DJ Berger, National ITC Corporation [U] Gary Bonetti, UA Local #342 JATC [L] Jeremy Brown, NSF International [R/S/T] Michael Cudahy, Plastic Pipe & Fittings Association (PPFA) [M] Pennie Feehan, Copper Development Association (CDA) [M] Brian Fenty, Self [E] Ed Gormley, Gormley Plumbing & Mechanical [I/M] Lingyan Gorsuch, Arup [SE]

Ephraim Kreitenberg, Kreit Mechanical Associates, Inc. [SE] David Mann, CA State Pipe Trades Council [L] John Nielsen, State of Idaho – Division of Building Safety [E] Johnnie Norris, United Association [L] Phil Ribbs, PHR Consultants [SE] Arnold Rodio, Pace Setter Plumbing [I/M] Brad Senecaut, City of Hillsboro [E] Robert Sewell, Lescure Company [U] Larry Soskin, ACE Duraflo [M] Billy Smith, American Society of Plumbing Engineers (ASPE) [SE] Don Taylor, Dittmann Plumbing [U] Chuck White, Plumbing-Heating-Cooling Contractors National Association (PHCC-NA) [I/M]

Alternates

Chris Cheek, National ITC Corporation [U] Richard Church, Plastic Pipe & Fittings Association (PPFA) [M] Tim Knight, UA Local #342 JATC [L] Ramiro Mata, American Society of Plumbing Engineers (ASPE) [SE]

David Orton, NSF International [R/S/T] Dan Rademacher, United Association [L] Martin Salberg, Pace Setter Plumbing [I/M] Kevin Sullivan, UA Local #342 JATC [L]

Nonvoting

Matthew Barker, National Fire Protection Association (NFPA) [R/S/T] David Gans, Ex-Officio, IAPMO [E] Enrique Gonzalez, IAPMO Staff Liaison

Alexander Ing, National Fire Protection Association (NFPA) [R/S/T] Doug Marian, ASSE [R/S/T]

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.

ion 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.

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SECTION RELOCATION

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RELATED PUBLICATIONS AND SERVICES

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

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

manufacturers, contractors, plumbers, and apprentices.

IAPMO Headquarters Directory

4755 East Philadelphia Street, Ontario, California 91761-2816

Publication Order Desk Phone: 800-85-IAPMO

Publication Toll Free Fax: 877-85-CODES

E-mail: iapmo@iapmo.org

Website: www.iapmo.org

Free Code Question: 800-201-0335

Uniform Plumbing Code – 2024 Edition:

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

Uniform Plumbing Code Illustrated Training Manual:

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

Uniform Plumbing Code Study Guide:

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

Guide to Important Code Questions to the Uniform Plumbing Code:

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

Uniform Mechanical Code – 2024 Edition:

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

Uniform Mechanical Code Illustrated Training Manual:

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

Uniform Mechanical Code Study Guide:

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.

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

RELATED PUBLICATIONS AND SERVICES

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

Uniform Swimming Pool, Spa, and Hot Tub Code – 2024 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 – 2024 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.

ANSI Z 124 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.

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.

xxiv 2025 CALIFORNIA PLUMBING CODE

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

RELATED PUBLICATIONS AND SERVICES

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

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 quarterly 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

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

xxvi 2025 CALIFORNIA PLUMBING CODE

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TABLE OF CONTENTS

CHAPTER 1 DIVISION I

CALIFORNIA ADMINISTRATION . . . .1

1.1.0 General . . . . . . . . . . . . . . . . . . . . . . .3

1.1.1 Title . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.1.2 Purpose . . . . . . . . . . . . . . . . . . . . . .3

1.1.3 Scope . . . . . . . . . . . . . . . . . . . . . . . .3

1.1.4 Appendices . . . . . . . . . . . . . . . . . . .4

1.1.5 Referenced Codes . . . . . . . . . . . . . .4

1.1.6 Non-Building Standards, Orders, and Regulations . . . . . . . . . . . . . . . .4

1.1.7 Order of Precedence and Use . . . .4

1.1.8 City, County, or City and County Amendments, Additions or Deletions . . . . . . . . . . .4

1.1.9 Effective Date of this Code . . . . . . .5

1.1.10 Availability of Codes . . . . . . . . . . . . .5

1.1.11 Format . . . . . . . . . . . . . . . . . . . . . . .5

1.1.12 Validity . . . . . . . . . . . . . . . . . . . . . . .5

1.2.0 Building Standards Commission . . .5

1.2.1 BSC . . . . . . . . . . . . . . . . . . . . . . . . .5

1.2.2 BSC-CG . . . . . . . . . . . . . . . . . . . . . .6

1.2.3 Alternate Materials, Design, and Methods of Construction

and Equipment . . . . . . . . . . . . . . . . .6

1.3.0 Board of State and Community Corrections . . . . . . . . . . . . . . . . . . . .6

1.3.2 Adopting Agency Identification . . . .7

1.4.0 Department of Consumer Affairs . . .7

1.4.2 Adopting Agency Identification . . . .7

1.5.0 Reserved for California

Energy Commission . . . . . . . . . . . . .7

1.6.0 Department of Food and Agriculture . . . . . . . . . . . . . . . . .7

1.6.2 Adopting Agency Identification . . . .7

1.7.0 Department of Public Health . . . . . .7

1.7.2 Adopting Agency Identification . . . .7

1.8.0 Department of Housing and Community Development . . . . . . . . .7

1.8.1 Purpose . . . . . . . . . . . . . . . . . . . . . .7

1.8.2 Authority and Abbreviations . . . . . . .7

1.8.3 Local Enforcing Agency . . . . . . . . . .8

1.8.4 Permits, Fees, Applications, and Inspections . . . . . . . . . . . . . . . .9

1.8.5 Right of Entry for Enforcement . . . .10

1.8.6 Local Modification by Ordinance or Regulation . . . . . . . .10

1.8.7 Alternate Materials, Designs, Tests, and Methods of Construction . . . . .10

1.8.8 Appeals Board . . . . . . . . . . . . . . . .11

1.8.9 Unsafe Buildings or Structures . . .12

1.8.10 Other Building Regulations . . . . . .12

1.9.0 Division of the State Architect . . . .13

1.9.1 Division of the State Architect – Access Compliance . . . . . . . . . . . .13

1.9.2 Division of the State Architect – Structural Safety . . . . . . . . . . . . . . .13

1.10.0 Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development . . . . . . . . . . . . . .13

1.10.1 OSHPD 1 and OSHPD 1R . . . . . . .13

1.10.2 OSHPD 2 . . . . . . . . . . . . . . . . . . . .13

1.10.3 OSHPD 3 . . . . . . . . . . . . . . . . . . . .14

1.10.4 OSHPD 4 . . . . . . . . . . . . . . . . . . . .14

1.10.5 OSHPD 5 . . . . . . . . . . . . . . . . . . . .14

1.10.6 OSHPD 6 . . . . . . . . . . . . . . . . . . . .15

1.11.0 Office of the State Fire Marshal . . .15

1.11.1 SFM-Office of the

State Fire Marshal . . . . . . . . . . . . .15

1.11.2 Duties and Powers of

the Enforcing Agency . . . . . . . . . . .16

1.11.3 Construction Documents . . . . . . . .18

1.11.4 Fees . . . . . . . . . . . . . . . . . . . . . . . .18

1.11.5 Inspections . . . . . . . . . . . . . . . . . . .19

1.11.6 Certificate of Occupancy . . . . . . . .19

1.11.7 Temporary Structures and Uses . .19

1.11.8 Service Utilities . . . . . . . . . . . . . . . .19

1.11.9 Stop Work Order . . . . . . . . . . . . . .19

1.11.10 Unsafe Buildings, Structures, and Equipment . . . . . . . . . . . . . . . .19

1.11.11 Adopting Agency Identification . . .19

1.12.0 Reserved for the State Librarian . .19

1.13.0 Department of Water Resources (DWR) . . . . . . . . . . . . .19

1.13.1 Application . . . . . . . . . . . . . . . . . . .19

1.13.2 Adopting Agency Identification . . .19

1.14.0 Reserved for the State

Lands Commission . . . . . . . . . . . . .19

CHAPTER 1 DIVISION II

SCOPE AND ADMINISTRATION . .21

101.0 General . . . . . . . . . . . . . . . . . . . . . .21

101.1 Title . . . . . . . . . . . . . . . . . . . . . . . . .21

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TABLE OF CONTENTS

101.2 Scope . . . . . . . . . . . . . . . . . . . . . . .21

101.3 Purpose . . . . . . . . . . . . . . . . . . . . .21

101.4 Unconstitutional . . . . . . . . . . . . . . .21

101.5 Validity . . . . . . . . . . . . . . . . . . . . . .21

102.0 Applicability . . . . . . . . . . . . . . . . . . .21

102.1 Conflicts Between Codes . . . . . . . .21

102.2 Existing Installations . . . . . . . . . . . .21

102.3 Maintenance . . . . . . . . . . . . . . . . . .21

102.4 Additions, Alterations, Renovations, or Repairs . . . . . . . . .21

102.5 Health and Safety . . . . . . . . . . . . . .21

102.6 Changes in Building Occupancy . . .21

102.7 Moved Structures . . . . . . . . . . . . . .21

102.8 Appendices . . . . . . . . . . . . . . . . . . .21

103.0 Duties and Powers of the

Authority Having Jurisdiction . . . . .22

103.1 General . . . . . . . . . . . . . . . . . . . . . .22

103.2 Liability . . . . . . . . . . . . . . . . . . . . . .22

103.3 Applications and Permits . . . . . . . .22

103.4 Right of Entry . . . . . . . . . . . . . . . . .22

104.0 Permits . . . . . . . . . . . . . . . . . . . . . .22

104.1 Permits Required . . . . . . . . . . . . . .22

104.2 Exempt Work . . . . . . . . . . . . . . . . .22

104.3 Application for Permit . . . . . . . . . . .22

104.4 Permit Issuance . . . . . . . . . . . . . . .23

104.5 Fees . . . . . . . . . . . . . . . . . . . . . . . .24

105.0 Inspections and Testing . . . . . . . . .24

105.1 General . . . . . . . . . . . . . . . . . . . . . .24

105.2 Required Inspections . . . . . . . . . . .24

105.3 Testing of Systems . . . . . . . . . . . . .25

105.4 Connection to Service Utilities . . . .25

106.0 Violations and Penalties . . . . . . . . .25

106.1 General . . . . . . . . . . . . . . . . . . . . . .25

106.2 Notices of Correction or Violation . . .25

106.3 Penalties . . . . . . . . . . . . . . . . . . . . .26

106.4 Stop Orders . . . . . . . . . . . . . . . . . .26

106.5 Authority to Disconnect Utilities in Emergencies . . . . . . . . .26

106.6 Authority to Condemn . . . . . . . . . . .26

107.0 Board of Appeals . . . . . . . . . . . . . .26

107.1 General . . . . . . . . . . . . . . . . . . . . . .26

107.2 Limitations of Authority . . . . . . . . . .26

Table 104.5 Plumbing Permit Fees . . . . . . . . . .27

CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . .29

201.0 General . . . . . . . . . . . . . . . . . . . . . .31

201.1 Applicability . . . . . . . . . . . . . . . . . . .31

202.0 Definition of Terms . . . . . . . . . . . . .31

202.1 General . . . . . . . . . . . . . . . . . . . . . .31

CHAPTER 3 GENERAL REGULATIONS . . . . . .47

301.0 General . . . . . . . . . . . . . . . . . . . . . .49

301.1 Applicability . . . . . . . . . . . . . . . . . . .49

301.2 Minimum Standards . . . . . . . . . . . .49

301.3 Alternate Materials and Methods

of Construction Equivalency . . . . . .49

301.4 Flood Hazard Areas . . . . . . . . . . . .49

301.5 Alternative Engineered Design . . . .50

301.6 Tall Wood (Mass Timber) Buildings . . . . . . . . . . . . . . . . . . . . .50

302.0 Iron Pipe Size (IPS) Pipe . . . . . . . .50

302.1 General . . . . . . . . . . . . . . . . . . . . . .50

303.0 Disposal of Liquid Waste . . . . . . . .50

303.1 General . . . . . . . . . . . . . . . . . . . . . .50

304.0 Connections to Plumbing System Required . . . . . . . . . . . . . .50

304.1 General . . . . . . . . . . . . . . . . . . . . . .50

305.0 Damage to Drainage System or Public Sewer . . . . . . . . . . . . . . .51

305.1 Unlawful Practices . . . . . . . . . . . . .51

306.0 Industrial Wastes . . . . . . . . . . . . . .51

306.1 Detrimental Wastes . . . . . . . . . . . .51

306.2 Safe Discharge . . . . . . . . . . . . . . . .51

307.0 Location . . . . . . . . . . . . . . . . . . . . .51

307.1 System . . . . . . . . . . . . . . . . . . . . . .51

307.2 Ownership . . . . . . . . . . . . . . . . . . .51

308.0 Prohibited Locations . . . . . . . . . . . .51

308.1 General . . . . . . . . . . . . . . . . . . . . . .51

309.0 Workmanship . . . . . . . . . . . . . . . . .51

309.1 Engineering Practices . . . . . . . . . . .51

309.2 Concealing Imperfections . . . . . . . .51

309.3 Burred Ends . . . . . . . . . . . . . . . . . .51

309.4 Installation Practices . . . . . . . . . . . .51

309.5 Sound Transmission . . . . . . . . . . . .51

309.6 Dead Legs . . . . . . . . . . . . . . . . . . .51

310.0 Prohibited Fittings and Practices . . . . . . . . . . . . . . . . . . . . .51

310.1 Fittings . . . . . . . . . . . . . . . . . . . . . .51

310.2 Drainage and Vent Piping . . . . . . .51

310.3 Waste Connection . . . . . . . . . . . . .51

310.4 Use of Vent and Waste Pipes . . . .51

310.5 Obstruction of Flow . . . . . . . . . . . .51

310.6 Dissimilar Metals . . . . . . . . . . . . . .51

310.7 Direction of Flow . . . . . . . . . . . . . . .51

310.8 Screwed Fittings . . . . . . . . . . . . . . .51

310.9 Female Plastic Connections . . . . . .52

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

TABLE OF CONTENTS

310.10 ABS and PVC Transition Joints . . .52

Equipment Rooms . . . . . . . . . . . . .52

311.0 Independent Systems . . . . . . . . . . .52

311.1 General . . . . . . . . . . . . . . . . . . . . . .52

312.0 Protection of Piping, Tubing, Materials, and Structures . . . . . . . .52

312.1 General . . . . . . . . . . . . . . . . . . . . . .52

312.2 Installation . . . . . . . . . . . . . . . . . . .52

312.3 Building Sewer and Drainage Piping . . . . . . . . . . . . . . . . . . . . . . .52

312.4 Corrosion, Erosion, and Mechanical Damage . . . . . . . . . . . .52

312.5 Protectively Coated Pipe . . . . . . . .52

312.6 Freezing Protection . . . . . . . . . . . .52

312.7 Fire-Resistant Construction . . . . . .52

312.8 Waterproofing of Openings . . . . . .52

312.9 Steel Nail Plates . . . . . . . . . . . . . . .52

312.10 Sleeves . . . . . . . . . . . . . . . . . . . . . .52

312.11 Structural Members . . . . . . . . . . . .53

312.12 Rodentproofing . . . . . . . . . . . . . . . .53

313.0 Hangers, Supports, and Anchors . . .53

313.1 General . . . . . . . . . . . . . . . . . . . . . .53

313.2 Material . . . . . . . . . . . . . . . . . . . . . .53

313.3 Suspended Piping . . . . . . . . . . . . .53

313.4 Alignment . . . . . . . . . . . . . . . . . . . .53

313.5 Underground Installation . . . . . . . .53

313.6 Hanger Rod Sizes . . . . . . . . . . . . .53

Table 313.6 Hanger Rod Sizes . . . . . . . . . . . . .53

313.7 Gas Piping . . . . . . . . . . . . . . . . . . .53

314.0 Trenching, Excavation, and Backfill . . . . . . . . . . . . . . . . . . . . . .53

314.1 Trenches . . . . . . . . . . . . . . . . . . . . .53

314.2 Tunneling and Driving . . . . . . . . . .53

314.3 Open Trenches . . . . . . . . . . . . . . . .53

314.4 Excavations . . . . . . . . . . . . . . . . . .53

315.0 Joints and Connections . . . . . . . . .54

315.1 Unions . . . . . . . . . . . . . . . . . . . . . .54

315.2 Prohibited Joints and

Connections . . . . . . . . . . . . . . . . . .54

316.0 Increasers and Reducers . . . . . . . .54

316.1 General . . . . . . . . . . . . . . . . . . . . . .54

317.0 Food-Handling Establishments . . . .54

317.1 General . . . . . . . . . . . . . . . . . . . . . .54

318.0 Test Gauges . . . . . . . . . . . . . . . . . .54

318.1 General . . . . . . . . . . . . . . . . . . . . . .54

318.2 Pressure Tests (10 psi or less) . . .54

318.3 Pressure Tests (greater than 10 psi to 100 psi) . . . . . . . . . . . . . .54

318.4 Pressure Tests (exceeding 100 psi) . . . . . . . . . . . . . . . . . . . . . .54

318.5 Pressure Range . . . . . . . . . . . . . . .54

319.0 Medical Gas and Vacuum

Systems . . . . . . . . . . . . . . . . . . . . .54

319.1 General . . . . . . . . . . . . . . . . . . . . . .54

320.0 Rehabilitation of Piping Systems . .54

320.1 General . . . . . . . . . . . . . . . . . . . . . .54

Table 313.3 Hangers and Supports . . . . . . . . . .55

CHAPTER 4 PLUMBING FIXTURES

AND FIXTURE FITTINGS . . . . . . .57

401.0 General . . . . . . . . . . . . . . . . . . . . . .59

401.1 Applicability . . . . . . . . . . . . . . . . . . .59

401.2 Quality of Fixtures . . . . . . . . . . . . .59

and Fittings . . . . . . . . . . . . . . . . . . .59

402.0 Installation . . . . . . . . . . . . . . . . . . .59

402.1 Cleaning . . . . . . . . . . . . . . . . . . . . .59

402.2 Joints . . . . . . . . . . . . . . . . . . . . . . .59

402.3 Securing Fixtures . . . . . . . . . . . . . .59

402.4 Wall-Hung Fixtures . . . . . . . . . . . . .59

402.5 Setting . . . . . . . . . . . . . . . . . . . . . .59

402.6 Flanged Fixture Connections . . . . .59

402.7 Supply Fittings . . . . . . . . . . . . . . . .60

402.8 Installation . . . . . . . . . . . . . . . . . . .60

402.9 Design and Installation of Plumbing Fixtures . . . . . . . . . . . . . .60

402.10 Slip Joint Connections . . . . . . . . . .60

402.11 Future Fixtures . . . . . . . . . . . . . . . .60

403.0 Accessible Plumbing Facilities . . . .60

403.1 General . . . . . . . . . . . . . . . . . . . . . .60

403.2 Fixtures and Fixture Fittings for Persons with Disabilities . . . . . .60

403.3 Exposed Pipes and Surfaces . . . . .60

404.0 Waste Fittings and Overflows . . . . .60

404.1 Waste Fittings . . . . . . . . . . . . . . . . .60

404.2 Overflows . . . . . . . . . . . . . . . . . . . .60

405.0 Prohibited Fixtures . . . . . . . . . . . . .60

405.1 Prohibited Water Closets . . . . . . . .60

405.2 Prohibited Urinals . . . . . . . . . . . . . .60

405.3 Miscellaneous Fixtures . . . . . . . . . .60

406.0 Special Fixtures and Specialties . . .61

406.1 Water and Waste Connections . . . .61

406.2 Special Use Sinks . . . . . . . . . . . . .61

406.3 Special Use Fixtures . . . . . . . . . . .61

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

TABLE OF CONTENTS

406.4 Zinc Alloy Components . . . . . . . . .61

407.0 Lavatories . . . . . . . . . . . . . . . . . . . .61

407.1 Application . . . . . . . . . . . . . . . . . . .61

407.2 Water Consumption . . . . . . . . . . . .61

407.3 Limitation of Hot Water

Temperature for Public Lavatories . . . . . . . . . . . . . . . . . . . .61

407.4 Transient Public Lavatories . . . . . .61

407.5 Waste Outlet . . . . . . . . . . . . . . . . . .61

407.6 Overflow . . . . . . . . . . . . . . . . . . . . .61

408.0 Showers . . . . . . . . . . . . . . . . . . . . .61

408.1 Application . . . . . . . . . . . . . . . . . . .61

408.2 Tileable Shower Receptors . . . . . .61

408.3 Water Consumption . . . . . . . . . . . .61

408.4 Individual Shower and

Tub-Shower Combination

Control Valves . . . . . . . . . . . . . . . .62

408.5 Waste Outlet . . . . . . . . . . . . . . . . . .62

408.6 Finished Curb or Threshold . . . . . .62

408.7 Shower Compartments . . . . . . . . . .62

408.8 Lining for Showers and Receptors . . . . . . . . . . . . . . . . . . . .62

408.9 Public Shower Floors . . . . . . . . . . .63

408.10 Location of Valves and Heads . . . . .63

408.11 Water Supply Riser . . . . . . . . . . . .63

409.0 Bathtubs and Whirlpool Bathtubs . . . . . . . . . . . . . . . . . . . . .63

409.1 Application . . . . . . . . . . . . . . . . . . .63

409.2 Waste Outlet . . . . . . . . . . . . . . . . . .63

409.3 Overflow . . . . . . . . . . . . . . . . . . . . .63

409.4 Limitation of Hot Water

Temperature in Bathtubs and Whirlpool Bathtubs . . . . . . . . .63

409.5 Backflow Protection . . . . . . . . . . . .64

409.6 Installation and Access . . . . . . . . . .64

410.0 Bidets . . . . . . . . . . . . . . . . . . . . . . .64

410.1 Application . . . . . . . . . . . . . . . . . . .64

410.2 Backflow Protection . . . . . . . . . . . .64

410.3 Limitation of Water

Temperature in Bidets . . . . . . . . . .64

411.0 Water Closets . . . . . . . . . . . . . . . . .64

411.1 Application . . . . . . . . . . . . . . . . . . .64

411.2 Water Consumption . . . . . . . . . . . .64

411.3 Water Closet Seats . . . . . . . . . . . .64

411.4 Personal Hygiene Devices . . . . . . .64

412.0 Urinals . . . . . . . . . . . . . . . . . . . . . .64

412.1 Application . . . . . . . . . . . . . . . . . . .64

412.2 Backflow Protection . . . . . . . . . . . .65

413.0 Flushing Devices . . . . . . . . . . . . . .65

413.1 Where Required . . . . . . . . . . . . . . .65

413.2 Flushometer Valves . . . . . . . . . . . .65

413.3 Flush Tanks . . . . . . . . . . . . . . . . . .65

413.4 Water Supply for Flush Tanks . . . .65

413.5 Overflows in Flush Tanks . . . . . . . .65

414.0 Dishwashing Machines . . . . . . . . . .65

414.1 Application . . . . . . . . . . . . . . . . . . .65

414.2 Backflow Protection . . . . . . . . . . . .65

414.3 Drainage Connection . . . . . . . . . . .65

414.4 Lead Content . . . . . . . . . . . . . . . . .65

415.0 Drinking Fountains . . . . . . . . . . . . .65

415.1 Application . . . . . . . . . . . . . . . . . . .65

415.2 Drinking Fountain Alternatives . . . .66

415.3 Drainage Connection . . . . . . . . . . .66

415.4 Location . . . . . . . . . . . . . . . . . . . . .66

416.0 Emergency Eyewash and Shower Equipment . . . . . . . . . . . . .66

416.1 Application . . . . . . . . . . . . . . . . . . .66

416.2 Water Supply . . . . . . . . . . . . . . . . .66

416.3 Installation . . . . . . . . . . . . . . . . . . .66

416.4 Location . . . . . . . . . . . . . . . . . . . . .66

416.5 Drain . . . . . . . . . . . . . . . . . . . . . . . .66

417.0 Faucets and Fixture Fittings . . . . . .66

417.1 Application . . . . . . . . . . . . . . . . . . .66

417.2 Deck Mounted Bath/Shower

Valves . . . . . . . . . . . . . . . . . . . . . . .66

417.3 Handheld Showers . . . . . . . . . . . . .66

417.4 Faucets and Fixture Fittings with Hose Connected Outlets . . . . .66

417.5 Separate Controls for Hot and Cold Water . . . . . . . . . . . . . . .66

417.6 Low-Pressure Water Dispenser . . . .66

417.7 Head Shampoo Sink Faucets . . . . .66

417.8 Footbaths and Pedicure Baths . . . .66

418.0 Floor Drains . . . . . . . . . . . . . . . . . .66

418.1 Application . . . . . . . . . . . . . . . . . . .66

418.2 Strainer . . . . . . . . . . . . . . . . . . . . . .66

418.3 Location of Floor Drains . . . . . . . . .67

418.4 Food Storage Areas . . . . . . . . . . . .67

418.5 Floor Slope . . . . . . . . . . . . . . . . . . .67

419.0 Food Waste Disposers . . . . . . . . . .67

419.1 Application . . . . . . . . . . . . . . . . . . .67

419.2 Drainage Connection . . . . . . . . . . .67

419.3 Water Supply . . . . . . . . . . . . . . . . .67

420.0 Sinks . . . . . . . . . . . . . . . . . . . . . . . .67

420.1 Application . . . . . . . . . . . . . . . . . . .67

420.2 Water Consumption . . . . . . . . . . . .67

420.3 Pre-Rinse Spray Valve . . . . . . . . . .67

xxx 2025 CALIFORNIA PLUMBING CODE

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

TABLE OF CONTENTS

Table 420.3 Commercial Pre-Rinse Spray Valve Maximum Flow Rate . . . . . . .67

420.4 Waste Outlet . . . . . . . . . . . . . . . . . .67

421.0 Floor Sinks . . . . . . . . . . . . . . . . . . .67

421.1 Application . . . . . . . . . . . . . . . . . . .67

421.2 Strainers . . . . . . . . . . . . . . . . . . . . .67

422.0 Minimum Number of

Required Fixtures . . . . . . . . . . . . . .67

422.1 Fixture Count . . . . . . . . . . . . . . . . .67

422.2 Separate Facilities . . . . . . . . . . . . .68

422.3 Fixture Requirements for Special Occupancies . . . . . . . . . . .68

422.4 Toilet Facilities Serving Employees and Customers . . . . . .68

422.5 Toilet Facilities for Workers . . . . . .69

422.6 Water Closet Compartment . . . . . .69

422.7 Urinal Partitions . . . . . . . . . . . . . . .69

Food Preparation Units . . . . . . . . .69

Food Establishments . . . . . . . . . . .69

Table 422.1 Minimum Plumbing Facilities . . . . .70

Table 4-1 Occupant Load Factor

[BSC and DSA-SS] . . . . . . . . . . . .75

Table 4-2 Minimum Plumbing Facilities

[OSHPD 1, 2, 3, 4 & 5] . . . . . . . . .76

CHAPTER 5 WATER HEATERS . . . . . . . . . . . .81

501.0 General . . . . . . . . . . . . . . . . . . . . . .83

501.1 Applicability . . . . . . . . . . . . . . . . . . .83

Table 501.1(1) Water Heaters . . . . . . . . . . . . . . . .83

Water Heating System Requirements . . . . . . . . . . . . . . . . .83

502.0 Permits . . . . . . . . . . . . . . . . . . . . . .83

502.1 General . . . . . . . . . . . . . . . . . . . . . .83

503.0 Inspection . . . . . . . . . . . . . . . . . . . .83

503.1 Inspection of Chimneys or Vents . . .83

503.2 Final Water Heater Inspection . . . .83

504.0 Water Heater Requirements . . . . . .83

504.1 Location . . . . . . . . . . . . . . . . . . . . .83

Table 501.1(2) First Hour Rating . . . . . . . . . . . . . .83

504.2 Vent . . . . . . . . . . . . . . . . . . . . . . . .84

504.3 Clearance . . . . . . . . . . . . . . . . . . . .84

504.4 Pressure-Limiting Devices . . . . . . .84

504.5 Temperature-Limiting Devices . . . .84

504.6 Temperature, Pressure, and Vacuum Relief Devices . . . . . . . . .84

504.7 Lead Content . . . . . . . . . . . . . . . . .84

505.0 Oil-Burning and Other Water Heaters . . . . . . . . . . . . . . . . . . . . . .84

505.1 Water Heaters . . . . . . . . . . . . . . . .84

505.2 Safety Devices . . . . . . . . . . . . . . . .84

505.3 Oil-Fired Water Heaters . . . . . . . . .84

505.4 Indirect-Fired Water Heaters . . . . .84

506.0 Air for Combustion and

Ventilation . . . . . . . . . . . . . . . . . . . .84

506.1 General . . . . . . . . . . . . . . . . . . . . . .84

506.2 Indoor Combustion Air . . . . . . . . . .85

506.3 Indoor Opening Size and Location . . . . . . . . . . . . . . . . . . . . .85

506.4 Outdoor Combustion Air . . . . . . . . .85

506.5 Combination Indoor and

Outdoor Combustion Air . . . . . . . . .87

506.6 Engineered Installations . . . . . . . . .87

506.7 Mechanical Combustion Air Supply . . . . . . . . . . . . . . . . . . . . . . .87

506.8 Louvers, Grilles, and Screens . . . .87

506.9 Combustion Air Ducts . . . . . . . . . . .87

507.0 Appliance and Equipment Installation Requirements . . . . . . . .88

507.1 Dielectric Insulator . . . . . . . . . . . . .88

507.2 Seismic Provisions . . . . . . . . . . . . .88

507.3 Appliance Support . . . . . . . . . . . . .88

507.4 Ground Support . . . . . . . . . . . . . . .88

507.5 Drainage Pan . . . . . . . . . . . . . . . . .88

507.6 Added or Converted

Equipment or Appliances . . . . . . . .88

507.7 Type of Gas(es) . . . . . . . . . . . . . . .88

507.8 Safety Shutoff Devices for Unlisted LP-Gas Appliance Used Indoors . . . . . . . . . . . . . . . . .89

507.9 Use of Air or Oxygen Under Pressure . . . . . . . . . . . . . . . . . . . . .89

507.10 Protection of Gas Appliances from Fumes or Gases other

than Products of Combustion . . . . .89

507.11 Process Air . . . . . . . . . . . . . . . . . . .89

507.12 Flammable Vapors . . . . . . . . . . . . .89

507.13 Installation in Residential Garages . . . . . . . . . . . . . . . . . . . . .89

507.14 Installation in Commercial Garages . . . . . . . . . . . . . . . . . . . . .89

507.15 Installation in Aircraft Hangars . . . .89

507.16 Venting of Flue Gases . . . . . . . . . .89

507.17 Extra Device or Attachment . . . . . .89

507.18 Addition to Existing System . . . . . .89

507.19 Avoiding Strain on Gas Piping . . . .89

507.20 Gas Appliance Pressure Regulators . . . . . . . . . . . . . . . . . . .89

507.21 Bleed Lines for Diaphragm-Type Valves . . . . . . . . . . . . . . . . . . . . . . .89

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

TABLE OF CONTENTS

507.22 Combination of Appliances and Equipment . . . . . . . . . . . . . . . .90

507.23 Installation Instructions . . . . . . . . . .90

507.24 Protection of Outdoor

Appliances . . . . . . . . . . . . . . . . . . .90

507.25 Accessibility for Service . . . . . . . . .90

507.26 Clearance to Combustible

Materials . . . . . . . . . . . . . . . . . . . . .90

508.0 Appliances on Roofs, in Attics or Under-Floor Spaces . . . . . . . . . .90

508.1 General . . . . . . . . . . . . . . . . . . . . . .90

508.2 Installation of Appliances on Roofs . . . . . . . . . . . . . . . . . . . . .90

508.3 Appliances on Roofs . . . . . . . . . . .90

508.4 Appliances in Attics and Under-Floor Spaces . . . . . . . . . . . .91

509.0 Venting of Appliances . . . . . . . . . . .91

509.1 Listing . . . . . . . . . . . . . . . . . . . . . . .91

509.2 Connection to Venting Systems . . .91

509.3 Minimum Safe Performance . . . . . .91

509.4 Type of Venting System to be Used . . . . . . . . . . . . . . . . . . . . .92

Table 509.4 Type of Venting System to be Used . . . . . . . . . . . . . . . . . . .92

509.5 Masonry, Metal, and Factory-Built Chimneys . . . . . . . . .93

509.6 Gas Vents . . . . . . . . . . . . . . . . . . . .94

Table 509.6.1 Roof Slope Heights . . . . . . . . . . . .95

509.7 Single-Wall Metal Pipe . . . . . . . . . .97

Table 509.7.3.4(1) Clearances for Connectors . . . . . . .97

Table 509.7.3.4(2) Reduction of Clearances with Specified Forms of Protection . . . .99

509.8 Through-the-Wall Vent Termination . . . . . . . . . . . . . . . . . .100

509.9 Condensation Drain . . . . . . . . . . .100

509.10 Vent Connectors for

Category I Appliances . . . . . . . . .100

Table 509.8.1 Through-the-Wall Direct-Vent Termination Clearances . . . . . . . .101

Table 509.10.1.3 Minimum Thickness for

Galvanized Steel Vent

Connectors for Low-Heat

Appliances . . . . . . . . . . . . . . . . . .102

Table 509.10.1.4 Minimum Thickness for Steel

Vent Connectors for

Medium-Heat Appliances . . . . . . .102

509.11 Vent Connectors for

Category II, Category III, and Category IV Appliances . . . . . . . .104

509.12 Appliances Requiring Draft Hoods . . . . . . . . . . . . . . . . . . . . . .104

509.13 Manually Operated Dampers . . . .104

509.14 Automatically Operated Vent Dampers . . . . . . . . . . . . . . . .104

509.15 Obstructions . . . . . . . . . . . . . . . . .104

510.0 Sizing of Category I Venting Systems . . . . . . . . . . . . . . . . . . . .104

510.1 Additional Requirements to Single Appliance Vent . . . . . . . . .104

510.2 Additional Requirements to Multiple-Appliance Vent . . . . . . . . .106

Table 510.2.1 Vent Connector Maximum

Length . . . . . . . . . . . . . . . . . . . . . .106

Table 510.1.2(1) Type B Double-Wall Gas Vent . . .110

Table 510.1.2(2) Type B Double-Wall Gas Vent . . .113

Table 510.1.2(3) Masonry Chimney . . . . . . . . . . . . .115

Table 510.1.2(4) Masonry Chimney . . . . . . . . . . . . .117

Table 510.1.2(5) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent . . .119

Table 510.1.2(6) Exterior Masonry Chimney . . . . . .120

Table 510.2(1) Type B Double-Wall Vent . . . . . . .121

Table 510.2(2) Type B Double-Wall Vent . . . . . . .125

Table 510.2(3) Masonry Chimney . . . . . . . . . . . . .127

Table 510.2(4) Masonry Chimney . . . . . . . . . . . . .129

Table 510.2(5) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent . .131

Table 510.2(6) Exterior Masonry Chimney . . . . . .131

Table 510.2(7) Exterior Masonry Chimney . . . . . .132

Table 510.2(8) Exterior Masonry Chimney . . . . . .133

Table 510.2(9) Exterior Masonry Chimney . . . . . .134

CHAPTER 6 WATER SUPPLY AND

DISTRIBUTION . . . . . . . . . . . . . .135

601.0 General . . . . . . . . . . . . . . . . . . . . .137

601.1 Applicability . . . . . . . . . . . . . . . . . .137

601.2 Water Supply and Flushing . . . . .137

601.3 Identification of a Potable and Nonpotable Water System . . . . . .137

Table 601.3.2 Minimum Length of Color Field and Size of Letters . . . . . . .138

Cosmetological Establishments . .138

Plants . . . . . . . . . . . . . . . . . . . . . .138

Facilities . . . . . . . . . . . . . . . . . . . .139

Establishments . . . . . . . . . . . . . . .139

602.0 Unlawful Connections . . . . . . . . . .139

602.1 Prohibited Installation . . . . . . . . . .139

602.2 Cross-Contamination . . . . . . . . . .139

602.3 Backflow Prevention . . . . . . . . . . .139

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602.4 Approval by Authority . . . . . . . . . .139

603.0 Cross-Connection Control . . . . . .139

603.1 General . . . . . . . . . . . . . . . . . . . . .139

603.2 Approval of Devices or Assemblies . . . . . . . . . . . . . . . . . .139

603.3 Backflow Prevention Devices, Assemblies, and Methods . . . . . .140

603.4 General Requirements . . . . . . . . .140

603.5 Specific Requirements . . . . . . . . .141

Table 603.2 Backflow Prevention Devices, Assemblies, and Methods . . . . . .142

Table 603.3.1 Minimum Air Gaps for Water Distribution . . . . . . . . . . . . . . . . . .144

604.0 Materials . . . . . . . . . . . . . . . . . . . .146

604.1 Pipe, Tube, and Fittings . . . . . . . .146

604.2 Lead Content . . . . . . . . . . . . . . . .147

604.3 Copper or Copper Alloy Tube . . .147

604.4 Hard-Drawn Copper or Copper Alloy Tubing . . . . . . . . . . . . . . . . .147

604.5 Flexible Connectors . . . . . . . . . . .147

604.6 Cast-Iron Fittings . . . . . . . . . . . . .147

604.7 Malleable Iron Fittings . . . . . . . . .147

604.8 Previously Used Piping and Tubing . . . . . . . . . . . . . . . . . . . . . .147

604.9 Epoxy Coating . . . . . . . . . . . . . . .147

604.10 Plastic Materials . . . . . . . . . . . . . .147

Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings . . . . . . . . . . . . . . . . . .148

604.11 Solder . . . . . . . . . . . . . . . . . . . . . .149

604.12 Flexible Corrugated Connectors . .149

604.13 Water Heater Connectors . . . . . . .149

605.0 Joints and Connections . . . . . . . .149

605.1 Copper or Copper Alloy Pipe, Tubing, and Joints . . . . . . . . . . . .149

605.2 CPVC Plastic Pipe and Joints . . .150

605.3 CPVC/AL/CPVC Plastic Pipe and Joints . . . . . . . . . . . . . . . . . . .150

605.4 Ductile Iron Pipe and Joints . . . . .150

605.5 Galvanized Steel Pipe and Joints . . . . . . . . . . . . . . . . . . . . . .151

605.6 PE Plastic Pipe/Tubing and Joints . . . . . . . . . . . . . . . . . . . . . .151

605.7 PE-AL-PE Plastic Pipe/Tubing and Joints . . . . . . . . . . . . . . . . . . .151

605.8 PE-RT . . . . . . . . . . . . . . . . . . . . . .151

605.9 PEX Plastic Tubing and Joints . . .151

605.10 PEX-AL-PEX Plastic Tubing and Joints . . . . . . . . . . . . . . . . . . .152

605.11 Polypropylene (PP) Piping and Joints . . . . . . . . . . . . . . . . . . .152

605.12 PVC Plastic Pipe and Joints . . . . .152

605.13 Stainless Steel Pipe and Joints . . .152

605.14 Slip Joints . . . . . . . . . . . . . . . . . . .153

605.15 Dielectric Unions . . . . . . . . . . . . . .153

605.16 Joints Between Various

Materials . . . . . . . . . . . . . . . . . . . .153

606.0 Valves . . . . . . . . . . . . . . . . . . . . . .153

606.1 General . . . . . . . . . . . . . . . . . . . . .153

606.2 Fullway Valve . . . . . . . . . . . . . . . .153

606.3 Multidwelling Units . . . . . . . . . . . .153

606.4 Multiple Openings . . . . . . . . . . . . .153

606.5 Control Valve . . . . . . . . . . . . . . . .153

606.6 Accessible . . . . . . . . . . . . . . . . . .153

606.7 Multiple Fixtures . . . . . . . . . . . . . .153

606.9 Check Valve Required . . . . . . . . .153

606.10 Leak Detection Devices . . . . . . . .154

607.0 Potable Water Supply Tanks . . . .154

607.1 General . . . . . . . . . . . . . . . . . . . . .154

607.2 Private Well Water Tanks . . . . . . .154

607.3 Potable Water Tanks . . . . . . . . . .154

607.4 Venting . . . . . . . . . . . . . . . . . . . . .154

607.5 Overflow . . . . . . . . . . . . . . . . . . . .154

607.6 Valves . . . . . . . . . . . . . . . . . . . . . .154

608.0 Water Pressure, Pressure Regulators, Pressure Relief Valves, and Vacuum Relief

Valves . . . . . . . . . . . . . . . . . . . . . .154

608.1 Inadequate Water Pressure . . . . .154

608.2 Excessive Water Pressure . . . . . .154

608.3 Expansion Tanks, and Combination Temperature and Pressure-Relief Valves . . . . .154

608.4 Pressure Relief Valves . . . . . . . . .154

608.5 Discharge Piping . . . . . . . . . . . . .154

608.6 Water-Heating Devices . . . . . . . . .155

608.7 Vacuum Relief Valves . . . . . . . . .155

609.0 Installation, Testing, Unions, and Location . . . . . . . . . . . . . . . . .155

609.1 Installation . . . . . . . . . . . . . . . . . .155

609.2 Trenches . . . . . . . . . . . . . . . . . . . .155

609.3 Under Concrete Slab . . . . . . . . . .155

609.4 Testing . . . . . . . . . . . . . . . . . . . . .155

609.5 Unions . . . . . . . . . . . . . . . . . . . . .155

609.6 Location . . . . . . . . . . . . . . . . . . . .155

609.7 Abutting Lot . . . . . . . . . . . . . . . . .155

609.8 Pumps . . . . . . . . . . . . . . . . . . . . .155

609.9 Low-Pressure Cutoff Required on Booster Pumps for Water Distribution Systems . . . . . . . . . . .156

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TABLE OF CONTENTS

609.10 Disinfection of Potable Water System . . . . . . . . . . . . . . . . . . . . .156

609.11 Water Hammer . . . . . . . . . . . . . . .156

609.12 Pipe Insulation . . . . . . . . . . . . . . .156

610.0 Size of Potable Water Piping . . . .156

610.1 Size . . . . . . . . . . . . . . . . . . . . . . . .156

610.2 Pressure Loss . . . . . . . . . . . . . . . .156

610.3 Quantity of Water . . . . . . . . . . . . .157

610.4 Sizing Water Supply and Distribution Systems . . . . . . . . . . .157

610.5 Sizing per Appendices A, C, and M . . . . . . . . . . . . . . . . .157

610.6 Friction and Pressure Loss . . . . . .157

610.7 Conditions for Using Table 610.4 . . . . . . . . . . . . . . . . . .157

610.8 Size of Meter and Building Supply Pipe Using Table 610.4 . .157

610.9 Size of Branches . . . . . . . . . . . . .157

610.10 Sizing for Flushometer Valves . . .157

Table 610.10 Flushometer Fixture Units for Water Sizing Using Table 610.3 . . . . . . . . . . . . . . . . . .157

Table 610.3 Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes . . . . . . . . . . . .158

Table 610.4 Fixture Unit Table for

Determining Water Pipe and Meter Sizes . . . . . . . . . . . . . .159

610.11 Sizing Systems for Flushometer Tanks . . . . . . . . . . . .160

610.12 Sizing for Velocity . . . . . . . . . . . . .160

610.13 Exceptions . . . . . . . . . . . . . . . . . .160

611.0 Drinking Water Treatment Units . . . . . . . . . . . . . . . . . . . . . . .160

611.1 Application . . . . . . . . . . . . . . . . . .160

611.2 Air Gap Discharge . . . . . . . . . . . .160

611.3 Connection Tubing . . . . . . . . . . . .160

611.4 Sizing of Residential Softeners . . .160

612.0 Residential Fire Sprinkler Systems . . . . . . . . . . . . . . . . . . . .160

612.1 Installation . . . . . . . . . . . . . . . . . .160

Table 611.1 Drinking Water Treatment Units . . . . . . . . . . . . . . . . . . . . . . .161

Table 611.4 Sizing of Residential Water Softeners . . . . . . . . . . . . . . . . . . .161

Systems for Health Facilities and Clinics . . . . . . . . . . . . . . . . . .161

Table 613.1 Hot Water Use . . . . . . . . . . . . . . . . .161

Systems . . . . . . . . . . . . . . . . . . . . . .162

Nonpotable Water Lines . . . . . . . . .162

CHAPTER 7 SANITARY DRAINAGE . . . . . . . .163

PART I Drainage Systems . . . . . . . . . . .165

701.0 General . . . . . . . . . . . . . . . . . . . . .165

701.1 Applicability . . . . . . . . . . . . . . . . . .165

701.2 Drainage Piping . . . . . . . . . . . . . .165

701.3 Drainage Fittings . . . . . . . . . . . . .165

701.4 Continuous Wastes . . . . . . . . . . .165

701.5 Lead . . . . . . . . . . . . . . . . . . . . . . .165

701.6 Caulking Ferrules . . . . . . . . . . . . .165

701.7 Soldering Bushings . . . . . . . . . . . .165

Table 701.6 Caulking Ferrules . . . . . . . . . . . . .165

Table 701.7 Soldering Bushings . . . . . . . . . . . .165

702.0 Fixture Unit Equivalents . . . . . . . .165

702.1 Trap Size . . . . . . . . . . . . . . . . . . .165

Table 701.2 Materials for Drain, Waste, Vent Pipe and Fittings . . . . . . . . .166

Table 702.1 Drainage Fixture Unit Values (DFU) . . . . . . . . . . . . . . . .167

Table 702.1(1) Maximum Drainage Fixture Units for a Trap and Trap Arm . . .168

702.2 Intermittent Flow . . . . . . . . . . . . . .168

Table 702.2 Discharge Capacity in Gallons Per Minute for

Intermittent Flow Only . . . . . . . . .168

702.3 Continuous Flow . . . . . . . . . . . . . .168

703.0 Size of Drainage Piping . . . . . . . .168

703.1 Minimum Size . . . . . . . . . . . . . . . .168

703.2 Maximum Number of Fixture

Units . . . . . . . . . . . . . . . . . . . . . . .168

703.3 Sizing per Appendix C . . . . . . . . .168

704.0 Fixture Connections (Drainage) . .168

704.1 Inlet Fittings . . . . . . . . . . . . . . . . .168

704.2 Single Vertical Drainage Pipe . . . .168

704.3 Commercial Sinks . . . . . . . . . . . . .168

Table 703.2 Maximum Unit Loading and Maximum Length of Drainage and Vent Piping . . . . . . . . . . . . . .169

705.0 Joints and Connections . . . . . . . .169

705.1 ABS and ABS Co-Extruded

Plastic Pipe and Joints . . . . . . . . .169

705.2 Cast-Iron Pipe and Joints . . . . . . .169

705.3 Copper or Copper Alloy Pipe (DWV) and Joints . . . . . . . . .170

705.4 Galvanized Steel Pipe and Joints . . . . . . . . . . . . . . . . . . .170

705.5 Polyethylene (PE) Sewer Pipe . . .170

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705.6 PVC and PVC Co-Extruded

Plastic Pipe and Joining Methods . . . . . . . . . . . . . . . . . . . .171

705.7 Stainless Steel Pipe and Joints . . .171

705.8 Vitrified Clay Pipe and Joints . . . .171

705.9 Special Joints . . . . . . . . . . . . . . . .171

705.10 Joints Between

Various Materials . . . . . . . . . . . . .171

706.0 Changes in Direction of Drainage Flow . . . . . . . . . . . . . . .172

706.1 Approved Fittings . . . . . . . . . . . . .172

706.2 Horizontal to Vertical . . . . . . . . . .172

706.3 Horizontal to Horizontal . . . . . . . .172

706.4 Vertical to Horizontal . . . . . . . . . .172

707.0 Cleanouts . . . . . . . . . . . . . . . . . . .172

707.1 Plug . . . . . . . . . . . . . . . . . . . . . . .172

Table 707.1 Cleanouts . . . . . . . . . . . . . . . . . . .172

707.2 Approved . . . . . . . . . . . . . . . . . . .172

Table 707.2 Cleanout Materials for Drain, Waste, and Vent . . . . . . . . . . . . . .172

707.3 Watertight and Gastight . . . . . . . .172

707.4 Location . . . . . . . . . . . . . . . . . . . .172

707.5 Cleaning . . . . . . . . . . . . . . . . . . . .173

707.6 Extension . . . . . . . . . . . . . . . . . . .173

707.7 Interceptor . . . . . . . . . . . . . . . . . .173

707.8 Access . . . . . . . . . . . . . . . . . . . . .173

707.9 Clearance . . . . . . . . . . . . . . . . . . .173

707.10 Fittings . . . . . . . . . . . . . . . . . . . . .173

707.11 Pressure Drainage Systems . . . . .173

707.12 Countersunk Cleanout Plugs . . . .173

707.13 Hubless Blind Plugs . . . . . . . . . . .173

707.14 Trap Arms . . . . . . . . . . . . . . . . . . .173

708.0 Grade of Horizontal Drainage Piping . . . . . . . . . . . . . . . . . . . . . .173

708.1 General . . . . . . . . . . . . . . . . . . . . .173

709.0 Gravity Drainage Required . . . . . .173

709.1 General . . . . . . . . . . . . . . . . . . . . .173

710.0 Drainage of Fixtures Located Below the Next Upstream Manhole or Below the Main

Sewer Level . . . . . . . . . . . . . . . . .173

710.1 Backflow Protection . . . . . . . . . . .173

710.2 Sewage Discharge . . . . . . . . . . . .173

710.3 Sewage Ejector and Pumps . . . . .173

710.4 Discharge Line . . . . . . . . . . . . . . .174

710.5 Size of Building Drains and Sewers . . . . . . . . . . . . . . . . . . . . .174

710.6 Backwater Valves . . . . . . . . . . . . .174

710.7 Drainage and Venting Systems . . .174

710.8 Sump and Receiving Tank Construction . . . . . . . . . . . . . . . . .174

710.9 Alarm . . . . . . . . . . . . . . . . . . . . . .174

710.10 Sump and Receiving Tank Covers and Vents . . . . . . . . . . . . .174

710.11 Air Tanks . . . . . . . . . . . . . . . . . . .174

710.12 Grinder Pump Ejector . . . . . . . . . .174

710.13 Macerating Toilet Systems and Pumped Waste Systems . . . .174

711.0 Suds Relief . . . . . . . . . . . . . . . . . .175

711.1 General . . . . . . . . . . . . . . . . . . . . .175

712.0 Testing . . . . . . . . . . . . . . . . . . . . .175

712.1 Media . . . . . . . . . . . . . . . . . . . . . .175

712.2 Water Test . . . . . . . . . . . . . . . . . .175

712.3 Air Test . . . . . . . . . . . . . . . . . . . . .175

PART II Building Sewers . . . . . . . . . . . . .175

713.0 Sewer Required . . . . . . . . . . . . . .175

713.1 Where Required . . . . . . . . . . . . . .175

713.2 Private Sewage Disposal System . . . . . . . . . . . . . . . . . . . . .175

713.3 Public Sewer . . . . . . . . . . . . . . . . .175

713.4 Public Sewer Availability . . . . . . .175

713.5 Permit . . . . . . . . . . . . . . . . . . . . . .175

713.6 Lot . . . . . . . . . . . . . . . . . . . . . . . . .175

713.7 Installation . . . . . . . . . . . . . . . . . .175

714.0 Damage to Public Sewer or Private Sewage Disposal System . . . . . . . . . . . . . . . . . . . . .175

714.1 Unlawful Practices . . . . . . . . . . . .175

714.2 Prohibited Water Discharge . . . . .176

714.3 Prohibited Sewer Connection . . . .176

714.4 Commercial Food Waste

Disposer . . . . . . . . . . . . . . . . . . . .176

714.5 Tanks . . . . . . . . . . . . . . . . . . . . . .176

715.0 Building Sewer Materials . . . . . . .176

715.1 Materials . . . . . . . . . . . . . . . . . . . .176

715.2 Joining Methods and Materials . . .176

715.3 Existing Sewers . . . . . . . . . . . . . .176

716.0 Markings . . . . . . . . . . . . . . . . . . . .176

716.1 General . . . . . . . . . . . . . . . . . . . . .176

717.0 Size of Building Sewers . . . . . . . .176

717.1 General . . . . . . . . . . . . . . . . . . . . .176

Table 717.1 Maximum/Minimum Fixture

Unit Loading on Building Sewer Piping . . . . . . . . . . . . . . . .176

Plants . . . . . . . . . . . . . . . . . . . . . .176

718.0 Grade, Support, and Protection of Building Sewers . . .176

718.1 Slope . . . . . . . . . . . . . . . . . . . . . .176

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

TABLE OF CONTENTS

718.2 Support . . . . . . . . . . . . . . . . . . . . .176

718.3 Protection from Damage . . . . . . .176

719.0 Cleanouts . . . . . . . . . . . . . . . . . . .177

719.1 Locations . . . . . . . . . . . . . . . . . . .177

719.2 No Additional Cleanouts . . . . . . . .177

719.3 Building Sewer Cleanouts . . . . . .177

719.4 Cleaning . . . . . . . . . . . . . . . . . . . .177

719.5 Access . . . . . . . . . . . . . . . . . . . . .177

719.6 Manholes . . . . . . . . . . . . . . . . . . .177

720.0 Sewer and Water Pipes . . . . . . . .177

720.1 General . . . . . . . . . . . . . . . . . . . . .177

721.0 Location . . . . . . . . . . . . . . . . . . . .177

721.1 Building Sewer . . . . . . . . . . . . . . .177

Table 721.1 Minimum Horizontal Distance Required from Building Sewer . . . .177

721.2 Abutting Lot . . . . . . . . . . . . . . . . .177

722.0 Abandoned Sewers and Sewage Disposal Facilities . . . . . .177

722.1 Building (House) Sewer . . . . . . . .177

722.2 Cesspools, Septic Tanks, and Seepage Pits . . . . . . . . . . . . .178

722.3 Filling . . . . . . . . . . . . . . . . . . . . . .178

722.4 Ownership . . . . . . . . . . . . . . . . . .178

722.5 Disposal Facilities . . . . . . . . . . . . .178

723.0 Building Sewer Test . . . . . . . . . . .178

723.1 General . . . . . . . . . . . . . . . . . . . . .178

Plant Drainage . . . . . . . . . . . . . . .178

Facilities Drainage . . . . . . . . . . . .178

General . . . . . . . . . . . . . . . . . . . . .178

CHAPTER 8 INDIRECT WASTES . . . . . . . . . .179

801.0 General . . . . . . . . . . . . . . . . . . . . .181

801.1 Applicability . . . . . . . . . . . . . . . . . .181

801.2 Air Gap or Air Break Required . . .181

801.3 Food and Beverage Handling Establishments . . . . . . .181

801.4 Bar and Fountain Sink Traps . . . .181

801.5 Connections from Water Distribution System . . . . . . . . . . . .181

801.6 Sterilizers . . . . . . . . . . . . . . . . . . .181

801.7 Drip or Drainage Outlets . . . . . . . .181

802.0 Approvals . . . . . . . . . . . . . . . . . . .181

802.1 General . . . . . . . . . . . . . . . . . . . . .181

803.0 Indirect Waste Piping . . . . . . . . . .181

803.1 Materials . . . . . . . . . . . . . . . . . . . .181

803.2 Copper and Copper Alloys . . . . . .181

803.3 Pipe Size and Length . . . . . . . . . .181

804.0 Indirect Waste Receptors . . . . . . .182

804.1 Standpipe Receptors . . . . . . . . . .182

805.0 Pressure Drainage Connections . . . . . . . . . . . . . . . . .182

805.1 General . . . . . . . . . . . . . . . . . . . . .182

806.0 Sterile Equipment . . . . . . . . . . . . .182

806.1 General . . . . . . . . . . . . . . . . . . . . .182

807.0 Appliances . . . . . . . . . . . . . . . . . .182

807.1 Non-Classed Apparatus . . . . . . . .182

807.2 Undiluted Condensate Waste . . . .182

807.3 Domestic Dishwashing Machine . . . . . . . . . . . . . . . . . . . .182

808.0 Cooling Water . . . . . . . . . . . . . . . .182

808.1 General . . . . . . . . . . . . . . . . . . . . .182

809.0 Drinking Fountains . . . . . . . . . . . .182

809.1 General . . . . . . . . . . . . . . . . . . . . .182

810.0 Steam and Hot Water Drainage Condensers and Sumps . . . . . . . .182

810.1 High-Temperature Discharge . . . .182

Table 810.1 Pipe Connections in Blowoff Condensers and Sumps . . . . . . . .183

810.2 Sumps, Condensers, and Intercepting Tanks . . . . . . . . . . . .183

810.3 Cleaning . . . . . . . . . . . . . . . . . . . .183

810.4 Strainers . . . . . . . . . . . . . . . . . . . .183

811.0 Chemical Wastes . . . . . . . . . . . . .183

811.1 Pretreatment . . . . . . . . . . . . . . . . .183

811.2 Waste and Vent Pipes . . . . . . . . .183

811.3 Joining Materials . . . . . . . . . . . . . .183

811.4 Access . . . . . . . . . . . . . . . . . . . . .183

811.5 Permanent Record . . . . . . . . . . . .183

811.6 Chemical Vent . . . . . . . . . . . . . . .183

811.7 Discharge . . . . . . . . . . . . . . . . . . .183

811.8 Diluted Chemicals . . . . . . . . . . . . .183

812.0 Clear Water Wastes . . . . . . . . . . .183

812.1 General . . . . . . . . . . . . . . . . . . . . .183

813.0 Swimming Pools . . . . . . . . . . . . . .183

813.1 General . . . . . . . . . . . . . . . . . . . . .183

814.0 Condensate Waste and Control . . .183

814.1 Condensate Disposal . . . . . . . . . .183

814.2 Condensate Control . . . . . . . . . . .184

814.3 Condensate Waste Pipe Material and Sizing . . . . . . . . . . . .184

Table 814.3 Minimum Condensate Pipe Size . . . . . . . . . . . . . . . . . . .184

814.4 Appliance Condensate Drains . . .184

814.5 Point of Discharge . . . . . . . . . . . .184

814.6 Condensate Waste from

Air-Conditioning Coils . . . . . . . . . .185

814.7 Plastic Fittings . . . . . . . . . . . . . . .185

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CHAPTER 9 VENTS . . . . . . . . . . . . . . . . . . . . .187

901.0 General . . . . . . . . . . . . . . . . . . . . .189

901.1 Applicability . . . . . . . . . . . . . . . . . .189

901.2 Vents Required . . . . . . . . . . . . . . .189

901.3 Trap Seal Protection . . . . . . . . . . .189

902.0 Vents Not Required . . . . . . . . . . .189

902.1 Interceptor . . . . . . . . . . . . . . . . . .189

902.2 Bars, Soda Fountains, and Counter . . . . . . . . . . . . . . . . . . . . .189

903.0 Materials . . . . . . . . . . . . . . . . . . . .189

903.1 Applicable Standards . . . . . . . . . .189

903.2 Use of Copper or Copper Alloy Tubing . . . . . . . . . . . . . . . . .189

903.3 Changes in Direction . . . . . . . . . .189

904.0 Size of Vents . . . . . . . . . . . . . . . .189

904.1 Size . . . . . . . . . . . . . . . . . . . . . . . .189

904.2 Length . . . . . . . . . . . . . . . . . . . . . .189

905.0 Vent Pipe Grades and Connections . . . . . . . . . . . . . . . . .190

905.1 Grade . . . . . . . . . . . . . . . . . . . . . .190

905.2 Horizontal Drainage Pipe . . . . . . .190

905.3 Vent Pipe Rise . . . . . . . . . . . . . . .190

905.4 Roof Termination . . . . . . . . . . . . .190

905.5 Location of Opening . . . . . . . . . . .190

905.6 Common Vertical Pipe . . . . . . . . .190

906.0 Vent Termination . . . . . . . . . . . . .190

906.1 Roof Termination . . . . . . . . . . . . .190

906.2 Clearance . . . . . . . . . . . . . . . . . . .190

906.3 Use of Roof . . . . . . . . . . . . . . . . .190

906.4 Outdoor Installations . . . . . . . . . . .190

906.5 Joints . . . . . . . . . . . . . . . . . . . . . .190

906.6 Lead . . . . . . . . . . . . . . . . . . . . . . .190

906.7 Frost or Snow Closure . . . . . . . . .190

907.0 Vent Stacks and Relief Vents . . . .190

907.1 Drainage Stack . . . . . . . . . . . . . . .190

907.2 Yoke Vent . . . . . . . . . . . . . . . . . . .190

908.0 Wet Venting . . . . . . . . . . . . . . . . .190

908.1 Vertical Wet Venting . . . . . . . . . . .190

908.2 Horizontal Wet Venting for a Bathroom Group . . . . . . . . . . . . . .191

909.0 Special Venting for Island Fixtures . . . . . . . . . . . . . . . . . . . . .191

909.1 General . . . . . . . . . . . . . . . . . . . . .191

910.0 Combination Waste and Vent

Systems . . . . . . . . . . . . . . . . . . . .191

910.1 Where Permitted . . . . . . . . . . . . . .191

910.2 Approval . . . . . . . . . . . . . . . . . . . .191

910.3 Vents . . . . . . . . . . . . . . . . . . . . . .191

910.4 Connections and Size . . . . . . . . .191

910.5 Vertical Waste Pipe . . . . . . . . . . .191

910.6 Cleanouts . . . . . . . . . . . . . . . . . . .191

910.7 Fixtures . . . . . . . . . . . . . . . . . . . . .191

911.0 Circuit Venting . . . . . . . . . . . . . . .191

911.1 Circuit Vent Permitted . . . . . . . . .191

911.2 Circuit Vent Size and

Connection . . . . . . . . . . . . . . . . . .192

911.3 Relief Vent . . . . . . . . . . . . . . . . . .192

911.4 Slope and Size of Horizontal Branch . . . . . . . . . . . . . . . . . . . . .192

911.5 Additional Fixtures . . . . . . . . . . . .192

912.0 Engineered Vent System . . . . . . .192

912.1 General . . . . . . . . . . . . . . . . . . . . .192

912.2 Minimum Requirements . . . . . . . .192

CHAPTER 10 TRAPS AND

INTERCEPTORS . . . . . . . . . . . . .193

1001.0 General . . . . . . . . . . . . . . . . . . . . .195

1001.1 Applicability . . . . . . . . . . . . . . . . . .195

1001.2 Where Required . . . . . . . . . . . . . .195

1002.0 Traps Protected by Vent Pipes . .195

1002.1 Vent Pipes . . . . . . . . . . . . . . . . . .195

1002.2 Fixture Traps . . . . . . . . . . . . . . . .195

1002.3 Change of Direction . . . . . . . . . . .195

1002.4 Vent Pipe Opening . . . . . . . . . . . .195

1003.0 Traps – Described . . . . . . . . . . . .195

1003.1 General Requirements . . . . . . . . .195

Table 1002.2 Horizontal Lengths of Trap Arms . . . . . . . . . . . . . . . . . . . . . . .195

1003.2 Slip Joint Fittings . . . . . . . . . . . . .195

1003.3 Size . . . . . . . . . . . . . . . . . . . . . . . .195

1004.0 Traps . . . . . . . . . . . . . . . . . . . . . .196

1004.1 Prohibited . . . . . . . . . . . . . . . . . . .196

1004.2 Movable Parts . . . . . . . . . . . . . . . .196

1005.0 Trap Seals . . . . . . . . . . . . . . . . . .196

1005.1 General . . . . . . . . . . . . . . . . . . . . .196

1006.0 Floor Drain Traps . . . . . . . . . . . . .196

1006.1 General . . . . . . . . . . . . . . . . . . . . .196

1007.0 Trap Seal Protection . . . . . . . . . . .196

1007.1 General . . . . . . . . . . . . . . . . . . . . .196

1007.2 Trap Seal Primers . . . . . . . . . . . .196

1008.0 Building Traps . . . . . . . . . . . . . . . .196

1008.1 General . . . . . . . . . . . . . . . . . . . . .196

1009.0 Interceptors (Clarifiers) and Separators . . . . . . . . . . . . . . . . . .196

1009.1 Where Required . . . . . . . . . . . . . .196

Table 1009.1 Approved Interceptors (Clarifiers) . .196

1009.2 Approval . . . . . . . . . . . . . . . . . . . .196

1009.3 Design . . . . . . . . . . . . . . . . . . . . .196

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

TABLE OF CONTENTS

1009.4 Relief Vent . . . . . . . . . . . . . . . . . .196

1009.5 Location . . . . . . . . . . . . . . . . . . . .196

1009.6 Maintenance of Interceptors . . . . .196

1009.7 Discharge . . . . . . . . . . . . . . . . . . .196

1010.0 Slaughterhouses, Packing Establishments, etc . . . . . . . . . . .196

1010.1 General . . . . . . . . . . . . . . . . . . . . .196

Plants . . . . . . . . . . . . . . . . . . . . . .197

Facilities . . . . . . . . . . . . . . . . . . . .197

Establishments . . . . . . . . . . . . . . .197

1011.0 Minimum Requirements for Auto Wash Racks . . . . . . . . . . . . .197

1011.1 General . . . . . . . . . . . . . . . . . . . . .197

1012.0 Commercial and Industrial

Laundries . . . . . . . . . . . . . . . . . . .197

1012.1 General . . . . . . . . . . . . . . . . . . . . .197

1013.0 Bottling Establishments . . . . . . . .197

1013.1 General . . . . . . . . . . . . . . . . . . . . .197

1014.0 Grease Interceptors . . . . . . . . . . .197

1014.1 General . . . . . . . . . . . . . . . . . . . . .197

1014.2 Hydromechanical Grease Interceptors . . . . . . . . . . . . . . . . . .198

Table 1014.2.1 Hydromechanical Grease Interceptor Sizing Using Gravity Flow Rates . . . . . . . . . . . .198

1014.3 Gravity Grease Interceptors . . . . .198

Table 1014.3.6 Gravity Grease Interceptor Sizing . . . . . . . . . . . . . . . . . . . . . .199

1015.0 FOG (Fats, Oils, and Greases) Disposal System . . . . . . . . . . . . . .199

1015.1 Purpose . . . . . . . . . . . . . . . . . . . .199

1015.2 Components, Materials, and Equipment . . . . . . . . . . . . . . . . . .200

1015.3 Sizing and Installation . . . . . . . . .200

1015.4 Performance . . . . . . . . . . . . . . . . .200

1016.0 Sand Interceptors . . . . . . . . . . . . .200

1016.1 Discharge . . . . . . . . . . . . . . . . . . .200

1016.2 Authority Having Jurisdiction . . . .200

1016.3 Construction and Size . . . . . . . . .200

1016.4 Separate Use . . . . . . . . . . . . . . . .200

1017.0 Oil and Flammable Liquid Interceptors . . . . . . . . . . . . . . . . . .200

1017.1 Interceptors Required . . . . . . . . . .200

1017.2 Interceptor Design Alternatives . . .200

1017.3 Interceptor Details . . . . . . . . . . . .200

1017.4 Design of Interceptors . . . . . . . . .200

CHAPTER 11 STORM DRAINAGE . . . . . . . . . .203

1101.0 General . . . . . . . . . . . . . . . . . . . . .205

1101.1 Applicability . . . . . . . . . . . . . . . . . .205

1101.2 Where Required . . . . . . . . . . . . . .205

1101.3 Storm Water Drainage to Sanitary Sewer Prohibited . . . . . .205

1101.4 Material Uses . . . . . . . . . . . . . . . .205

Table 1101.4.6 Materials for Subsoil Drainpipe and Fittings . . . . . . . . . . . . . . . . . .205

1101.5 Expansion Joints Required . . . . . .205

1101.6 Subsoil Drains . . . . . . . . . . . . . . .205

1101.7 Building Subdrains . . . . . . . . . . . .206

1101.8 Areaway Drains . . . . . . . . . . . . . .206

1101.9 Window Areaway Drains . . . . . . .206

1101.10 Filling Stations and Motor Vehicle Washing Establishments . . . . . . . . . . . . . . .206

1101.11 Paved Areas . . . . . . . . . . . . . . . . .206

1101.12 Roof Drainage . . . . . . . . . . . . . . .206

1101.13 Cleanouts . . . . . . . . . . . . . . . . . . .207

1101.14 Rainwater Sumps . . . . . . . . . . . . .207

1101.15 Traps on Storm Drains and Leaders . . . . . . . . . . . . . . . . . . . . .207

1101.16 Leaders, Conductors, and

Connections . . . . . . . . . . . . . . . . .207

1102.0 Roof Drains . . . . . . . . . . . . . . . . . .207

1102.1 Applications . . . . . . . . . . . . . . . . .207

1102.2 Dome Strainers Required . . . . . . .207

1102.3 Roof Drain Flashings . . . . . . . . . .207

1103.0 Size of Leaders, Conductors,

and Storm Drains . . . . . . . . . . . . .207

1103.1 Vertical Conductors and

Leaders . . . . . . . . . . . . . . . . . . . . .207

1103.2 Size of Horizontal Storm

Drains and Sewers . . . . . . . . . . . .207

1103.3 Size of Roof Gutters . . . . . . . . . . .207

1103.4 Side Walls Draining onto a Roof . . . . . . . . . . . . . . . . . .207

Table 1103.1 Sizing Roof Drains, Leaders, and Vertical Rainwater Piping . . .208

1104.0 Values for Continuous Flow . . . . .208

1104.1 General . . . . . . . . . . . . . . . . . . . . .208

1105.0 Controlled-Flow Roof

Drainage . . . . . . . . . . . . . . . . . . . .208

1105.1 Application . . . . . . . . . . . . . . . . . .208

Table 1105.1(1) Controlled-Flow Maximum Roof Water Depth . . . . . . . . . . . . .209

Table 1105.1(2) Distance of Scupper Bottoms Above Roof . . . . . . . . . . . . . . . . . .209

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TABLE OF CONTENTS

1105.2 Setback Roofs . . . . . . . . . . . . . . .209

1106.0 Engineered Storm Drainage System . . . . . . . . . . . . . . . . . . . . .209

1106.1 General . . . . . . . . . . . . . . . . . . . . .209

1106.2 Siphonic Roof Drainage Systems . . . . . . . . . . . . . . . . . . . .209

1106.3 Siphonic Roof Drains . . . . . . . . . .209

1107.0 Testing . . . . . . . . . . . . . . . . . . . . .209

1107.1 Testing Required . . . . . . . . . . . . .209

1107.2 Methods of Testing Storm Drainage Systems . . . . . . . . . . . .209

Table 1103.2 Sizing of Horizontal Rainwater Piping . . . . . . . . . . . . .210

Table 1103.3 Size of Gutters . . . . . . . . . . . . . . .211

CHAPTER 12 FUEL GAS PIPING . . . . . . . . . . .213

1201.0 General . . . . . . . . . . . . . . . . . . . . .215

1201.1 Applicability . . . . . . . . . . . . . . . . . .215

1202.0 Coverage of Piping System . . . . .215

1202.1 General . . . . . . . . . . . . . . . . . . . . .215

1202.2 Piping System Requirements . . . .215

1202.3 Applications . . . . . . . . . . . . . . . . .215

1203.0 Inspection . . . . . . . . . . . . . . . . . . .215

1203.1 Inspection Notification . . . . . . . . .215

1203.2 Excavation . . . . . . . . . . . . . . . . . .215

1203.3 Type of Inspections . . . . . . . . . . .215

1203.4 Inspection Waived . . . . . . . . . . . .216

1204.0 Certificate of Inspection . . . . . . . .216

1204.1 Issuance . . . . . . . . . . . . . . . . . . . .216

1204.2 Gas Supplier . . . . . . . . . . . . . . . . .216

1204.3 Unlawful . . . . . . . . . . . . . . . . . . . .216

1205.0 Authority to Render Gas Service . . . . . . . . . . . . . . . . . . . . .216

1205.1 Authorized Personnel . . . . . . . . . .216

1205.2 Outlets . . . . . . . . . . . . . . . . . . . . .216

1206.0 Authority to Disconnect . . . . . . . .216

1206.1 Disconnection . . . . . . . . . . . . . . . .216

1206.2 Notice . . . . . . . . . . . . . . . . . . . . . .216

1206.3 Capped Outlets . . . . . . . . . . . . . . .216

1207.0 Temporary Use of Gas . . . . . . . . .216

1207.1 General . . . . . . . . . . . . . . . . . . . . .216

1208.0 Gas Piping System Design, Materials, and Components . . . . .216

1208.1 Installation of Piping System . . . .216

1208.2 Interconnections Supplying Separate Users . . . . . . . . . . . . . . .216

1208.3 Sizing of Gas Piping Systems . . .216

Table 1208.3.1 Approximate Gas Input for Typical Appliances . . . . . . . . . . . .217

1208.4 Maximum Operating Pressure in Buildings . . . . . . . . . . . . . . . . . .217

1208.5 Acceptable Piping Materials and Joining Methods . . . . . . . . . .217

Table 1208.5.8.2 Specifications for Threading Metallic Pipe . . . . . . . . . . . . . . . . .219

1208.6 Gas Meters . . . . . . . . . . . . . . . . . .220

1208.7 Gas Pressure Regulators . . . . . . .221

1208.8 Overpressure Protection Required . . . . . . . . . . . . . . . . . . . .221

1208.9 Overpressure Protection Devices . . . . . . . . . . . . . . . . . . . . .221

1208.10 Pressure Limitation

Requirements . . . . . . . . . . . . . . . .222

1208.11 Backpressure Protection . . . . . . .222

1208.12 Low-Pressure Protection . . . . . . .222

1208.13 Shutoff Valves . . . . . . . . . . . . . . .222

1208.14 Expansion and Flexibility . . . . . . .222

1208.15 Pressure Regulator and Pressure Control Venting . . . . . . .222

Table 1208.13 Manual Gas Valve Standards . . . .223

1209.0 Excess Flow Valve . . . . . . . . . . . .223

1209.1 General . . . . . . . . . . . . . . . . . . . . .223

1210.0 Gas Piping Installation . . . . . . . . .223

1210.1 Piping Underground . . . . . . . . . . .223

1210.2 CSST Piping Systems . . . . . . . . .225

1210.3 Installation of Aboveground Piping . . . . . . . . . . . . . . . . . . . . . .225

Table 1210.3.5.1 Support of Piping . . . . . . . . . . . . .225

1210.4 Concealed Piping in Buildings . . .225

1210.5 Piping in Vertical Chases . . . . . . .226

1210.6 Gas Pipe Turns . . . . . . . . . . . . . .226

1210.7 Drips and Sediment Traps . . . . . .227

1210.8 Outlets . . . . . . . . . . . . . . . . . . . . .227

1210.9 Manual Gas Shutoff Valves . . . . .227

1210.10 Prohibited Devices . . . . . . . . . . . .227

1210.11 Systems Containing Gas-Air Mixtures Outside the

Flammable Range . . . . . . . . . . . .227

1210.12 Systems Containing Flammable Gas-Air Mixtures . . . . . . . . . . . . . .227

1211.0 Electrical Bonding and Grounding . . . . . . . . . . . . . . . . . . .229

1211.1 Pipe and Tubing Other than CSST . . . . . . . . . . . . . . . . . . . . . .229

1211.2 Bonding of CSST Gas Piping . . . .229

1211.3 Arc-Resistant Jacketed CSST . . .229

1211.4 Prohibited Use . . . . . . . . . . . . . . .229

1211.5 Lightning Protection System . . . . .229

1211.6 Electrical Circuits . . . . . . . . . . . . .229

1211.7 Electrical Connections . . . . . . . . .229

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

TABLE OF CONTENTS

Shutoff Valves . . . . . . . . . . . . . . . .229

1212.0 Appliance and Equipment Connections to Building Piping . . .229

1212.1 Connecting Appliances and Equipment . . . . . . . . . . . . . . . . . .229

1212.2 Suspended Low-Intensity Infrared Tube Heaters . . . . . . . . .230

1212.3 Use of Nonmetallic Gas

Hose Connectors . . . . . . . . . . . . .230

1212.4 Injection (Bunsen) Burners . . . . . .230

1212.5 Connection of Portable

and Mobile Industrial

Gas Appliances . . . . . . . . . . . . . .230

1212.6 Appliance Shutoff Valves and Connections . . . . . . . . . . . . . .230

1212.7 Quick-Disconnect Devices . . . . . .230

1212.8 Gas Convenience Outlets . . . . . .231

1212.9 Sediment Trap . . . . . . . . . . . . . . .231

1212.10 Installation of Piping . . . . . . . . . . .231

1212.11 Liquefied Petroleum Gas Facilities and Piping . . . . . . . . . . .231

1213.0 Pressure Testing, Inspection, and Purging . . . . . . . . . . . . . . . . .231

1213.1 Piping Installations . . . . . . . . . . . .231

1213.2 Test Preparation . . . . . . . . . . . . . .231

1213.3 Test Pressure . . . . . . . . . . . . . . . .232

1213.4 Detection of Leaks and Defects . .232

1213.5 Piping System Leak Test . . . . . . .232

1213.6 Purging Requirements . . . . . . . . .232

Table 1213.6.1 Size and Length of Piping . . . . . .232

1214.0 Required Gas Supply . . . . . . . . . .233

1214.1 General . . . . . . . . . . . . . . . . . . . . .233

1214.2 Volume . . . . . . . . . . . . . . . . . . . . .233

1214.3 Gas Appliances . . . . . . . . . . . . . .233

1214.4 Size of Piping Outlets . . . . . . . . . .233

1215.0 Required Gas Piping Size . . . . . .234

1215.1 Pipe Sizing Methods . . . . . . . . . . .234

1215.2 Sizing of Gas Piping Systems . . .234

1215.3 Sizing Equations . . . . . . . . . . . . . .234

Table 1215.3 Cr and Y for Natural Gas

and Undiluted Propane at Standard Conditions . . . . . . . . . . .234

1215.4 Sizing of Piping Sections . . . . . . .234

1215.5 Engineering Methods . . . . . . . . . .235

1215.6 Variable Gas Pressure . . . . . . . . .235

Table 1215.2(1) Schedule 40 Metallic Pipe . . . . . .237

Table 1215.2(2) Schedule 40 Metallic Pipe . . . . . .238

Table 1215.2(3) Schedule 40 Metallic Pipe . . . . . .239

Table 1215.2(4) Schedule 40 Metallic Pipe . . . . . .240

Table 1215.2(5) Schedule 40 Metallic Pipe . . . . . .241

Table 1215.2(6) Schedule 40 Metallic Pipe . . . . . .242

Table 1215.2(7) Semi-Rigid Copper Tubing . . . . . .243

Table 1215.2(8) Semi-Rigid Copper Tubing . . . . . .244

Table 1215.2(9) Semi-Rigid Copper Tubing . . . . . .245

Table 1215.2(10) Semi-Rigid Copper Tubing . . . . . .246

Table 1215.2(11) Semi-Rigid Copper Tubing . . . . . .247

Table 1215.2(12) Semi-Rigid Copper Tubing . . . . . .248

Table 1215.2(13) Semi-Rigid Copper Tubing . . . . . .249

Table 1215.2(14) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .250

Table 1215.2(15) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .251

Table 1215.2(16) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .252

Table 1215.2(17) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .253

Table 1215.2(18) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .254

Table 1215.2(19) Polyethylene Plastic Pipe . . . . . . .255

Table 1215.2(20) Polyethylene Plastic Pipe . . . . . . .256

Table 1215.2(21) Polyethylene Plastic Pipe . . . . . . .257

Table 1215.2(22) Polyethylene Plastic Tubing . . . . .258

Table 1215.2(23) Polyethylene Plastic Tubing . . . . .258

Table 1215.2(24) Schedule 40 Metallic Pipe . . . . . .259

Table 1215.2(25) Schedule 40 Metallic Pipe . . . . . .260

Table 1215.2(26) Schedule 40 Metallic Pipe . . . . . .261

Table 1215.2(27) Schedule 40 Metallic Pipe . . . . . .262

Table 1215.2(28) Semi-Rigid Copper Tubing . . . . . .263

Table 1215.2(29) Semi-Rigid Copper Tubing . . . . . .264

Table 1215.2(30) Semi-Rigid Copper Tubing . . . . . .265

Table 1215.2(31) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .266

Table 1215.2(32) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .267

Table 1215.2(33) Corrugated Stainless Steel Tubing (CSST) . . . . . . . . . . . . . . .268

Table 1215.2(34) Polyethylene Plastic Pipe . . . . . . .269

Table 1215.2(35) Polyethylene Plastic Pipe . . . . . . .270

Table 1215.2(36) Polyethylene Plastic Tubing . . . . .271

CHAPTER 13 HEALTH CARE FACILITIES AND

MEDICAL GAS AND MEDICAL

VACUUM SYSTEMS . . . . . . . . . .273

PART I General Requirements . . . . . . . .275

1301.0 General Requirements . . . . . . . . .275

1301.1 Applicability . . . . . . . . . . . . . . . . . .275

1301.2 Where Not Applicable . . . . . . . . . .275

1301.3 Conflict of Requirements . . . . . . .275

1301.4 Where Required . . . . . . . . . . . . . .275

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

TABLE OF CONTENTS

1301.5 Existing Systems . . . . . . . . . . . . .275

1302.0 Design Requirements . . . . . . . . . .275

1302.1 Risk Categories . . . . . . . . . . . . . .275

1302.2 Patient Care Spaces . . . . . . . . . .275

1302.3 Anesthesia . . . . . . . . . . . . . . . . . .275

1302.4 Wet Procedure Locations . . . . . . .275

1303.0 Health Care Facilities . . . . . . . . . .275

1303.1 Drinking Fountain Control Valves . . . . . . . . . . . . . . . . . . . . . .275

1303.2 Psychiatric Patient Rooms . . . . . .275

1303.3 Locations for Ice Storage . . . . . . .276

1303.4 Sterilizers and Bedpan Steamers . . . . . . . . . . . . . . . . . . .276

1303.5 Aspirators . . . . . . . . . . . . . . . . . . .276

1303.6 Drains . . . . . . . . . . . . . . . . . . . . . .276

1303.7 Clinical Sinks . . . . . . . . . . . . . . . .276

1303.8 Water Supply for Hospitals . . . . . .276

1303.9 Work Performed in Occupied Healthcare Facilities . . . . . . . . . . .276

1304.0 Medical Gas and Medical Vacuum Piping Systems . . . . . . .276

1304.1 General . . . . . . . . . . . . . . . . . . . . .276

1304.2 Certification of Systems . . . . . . . .276

1304.3 Construction Documents . . . . . . .276

1304.4 Extent of Work . . . . . . . . . . . . . . .276

1304.5 Record . . . . . . . . . . . . . . . . . . . . .276

1305.0 System Performance . . . . . . . . . .276

1305.1 Required Operating Pressures . . .276

Table 1305.1 Standard Designation Colors and Operating Pressures for Gas and Vacuum Systems . . . . . .277

1305.2 Minimum Flow Rates . . . . . . . . . .277

1305.3 Minimum Station Outlets

and Inlets . . . . . . . . . . . . . . . . . . .277

1306.0 System Certification . . . . . . . . . . .277

1306.1 Certification . . . . . . . . . . . . . . . . . .277

1306.2 Certification Tests . . . . . . . . . . . . .277

1306.3 Report Items . . . . . . . . . . . . . . . . .277

1306.4 Components . . . . . . . . . . . . . . . . .277

Table 1305.2 Minimum Flow Rates . . . . . . . . . .277

Table 1305.3 Minimum Outlets and Inlets

Per Station . . . . . . . . . . . . . . . . . .278

PART II Category 1 Piped Gas and Vacuum Systems . . . . . . . . . . . .278

1307.0 Central Supply Systems . . . . . . . .278

1307.1 Terms . . . . . . . . . . . . . . . . . . . . . .278

1307.2 Nature of Hazards of Gas

and Vacuum Systems . . . . . . . . .278

1307.3 Permitted Locations for

Medical Gases . . . . . . . . . . . . . . .278

1307.4 Materials . . . . . . . . . . . . . . . . . . . .278

1308.0 Pressure-Regulating Equipment . .278

1308.1 Where Required . . . . . . . . . . . . . .278

1308.2 Pressure Relief Valves . . . . . . . . .278

1308.3 Pressure-Relief Valve

Requirements . . . . . . . . . . . . . . . .279

1309.0 Oxygen Concentrator Supply Units . . . . . . . . . . . . . . . . .279

1309.1 Oxygen Requirements . . . . . . . . .279

1309.2 Particulate Size . . . . . . . . . . . . . . .279

1309.3 Suitability . . . . . . . . . . . . . . . . . . .279

1309.4 Compatible Materials . . . . . . . . . .279

1309.5 Oxygen Concentrator Components . . . . . . . . . . . . . . . . .279

1309.6 Supply Air Quality . . . . . . . . . . . . .279

1309.7 Electrical Components . . . . . . . . .279

1309.8 Vent Valve . . . . . . . . . . . . . . . . . .279

1309.9 Valved Sample Port . . . . . . . . . . .279

1309.10 Suitable Filter . . . . . . . . . . . . . . . .279

1309.11 Check Valve . . . . . . . . . . . . . . . . .279

1309.12 Outlet Valve . . . . . . . . . . . . . . . . .279

1309.13 Oxygen Concentration Monitor . . .280

1310.0 Category 1 Medical Air Central Supply Systems . . . . . . . .280

1310.1 Quality of Medical Air . . . . . . . . . .280

1310.2 Uses of Medical Air . . . . . . . . . . .280

1310.3 Medical Air Compressors . . . . . . .280

1310.4 Medical Air Receivers . . . . . . . . . .280

1310.5 Valves . . . . . . . . . . . . . . . . . . . . . .280

1311.0 Compressor Intake . . . . . . . . . . . .280

1311.1 Air Sources . . . . . . . . . . . . . . . . . .280

1311.2 Medical Air Compressor Source . . . . . . . . . . . . . . . . . . . . .281

1311.3 Air Intakes . . . . . . . . . . . . . . . . . . .281

1311.4 Location . . . . . . . . . . . . . . . . . . . .281

1311.5 Separate Compressors . . . . . . . . .281

1311.6 Screening . . . . . . . . . . . . . . . . . . .281

1312.0 Medical Surgical Vacuum Central Supply Systems . . . . . . . .281

1312.1 General . . . . . . . . . . . . . . . . . . . . .281

1312.2 Medical-Surgical Vacuum Sources . . . . . . . . . . . . . . . . . . . .281

1312.3 Vacuum Receivers . . . . . . . . . . . .281

1312.4 Vacuum Filtration . . . . . . . . . . . . .281

1312.5 Piping Arrangement and Redundancies . . . . . . . . . . . . . . . .282

1312.6 Piping Serviceability . . . . . . . . . . .282

1312.7 Shutoff Valve . . . . . . . . . . . . . . . .282

1313.0 Medical-Surgical Vacuum Exhaust . . . . . . . . . . . . . . . . . . . . .282

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

TABLE OF CONTENTS

1313.1 Vacuum Source Exhausts . . . . . .282

1313.2 Location . . . . . . . . . . . . . . . . . . . .282

1313.3 Screening . . . . . . . . . . . . . . . . . . .282

1313.4 Dips and Loops . . . . . . . . . . . . . .282

1313.5 Multiple Pumps . . . . . . . . . . . . . . .282

1314.0 Valves . . . . . . . . . . . . . . . . . . . . . .282

1314.1 Gas and Vacuum Shutoff

Valves . . . . . . . . . . . . . . . . . . . . . .282

1314.2 Security . . . . . . . . . . . . . . . . . . . . .282

1314.3 Labeled . . . . . . . . . . . . . . . . . . . . .282

1314.4 Accessibility . . . . . . . . . . . . . . . . .282

1314.5 Valve Types . . . . . . . . . . . . . . . . .282

Table 1314.5(1) Positive Pressure Gases . . . . . . .283

Table 1314.5(2) Vacuum and WAGD . . . . . . . . . . .283

1314.6 Source Valves . . . . . . . . . . . . . . .283

1314.7 Main Line Valve . . . . . . . . . . . . . .283

1314.8 Riser Valves . . . . . . . . . . . . . . . . .283

1314.9 Service Valves . . . . . . . . . . . . . . .283

1314.10 Zone Valves . . . . . . . . . . . . . . . . .283

1314.11 In-Line Shutoff Valves . . . . . . . . .284

1314.12 Valves for Future Connections . . .284

1315.0 Station Outlets and Inlets . . . . . . .284

1315.1 General . . . . . . . . . . . . . . . . . . . . .284

1315.2 Required Valves . . . . . . . . . . . . . .284

1315.3 Secondary Valve . . . . . . . . . . . . .284

1315.4 Identification . . . . . . . . . . . . . . . . .284

1315.5 Threaded Outlets/Fittings . . . . . . .284

1315.6 Gas-Specific Station Outlet/Inlet . . . . . . . . . . . . . . . . . .284

1315.7 Common Parts . . . . . . . . . . . . . . .284

1315.8 Marking of Components . . . . . . . .284

1315.9 Components Not Specific to a Vacuum . . . . . . . . . . . . . . . . .284

1315.10 Factory-Installed Copper Inlet Tubes . . . . . . . . . . . . . . . . . .284

1315.11 Factory-Installed Copper Outlet Tubes . . . . . . . . . . . . . . . . .284

1315.12 Protection from Damage . . . . . . .284

1315.13 Multiple Wall Outlets/Inlets . . . . . .284

1315.14 Nonstandard Operation Pressures . . . . . . . . . . . . . . . . . . .284

1315.15 Post Installation . . . . . . . . . . . . . .284

1316.0 Pressure and Vacuum

Indicator Locations . . . . . . . . . . . .284

1316.1 Isolation . . . . . . . . . . . . . . . . . . . .284

1316.2 Pressure and Vacuum

Indicator Locations . . . . . . . . . . . .284

1317.0 Warning Systems . . . . . . . . . . . . .285

1317.1 Category 1 . . . . . . . . . . . . . . . . . .285

1318.0 Piping Materials for Field-Installed Positive Pressure

Medical Gas Systems . . . . . . . . . .285

1318.1 General . . . . . . . . . . . . . . . . . . . . .285

1318.2 Cleaning . . . . . . . . . . . . . . . . . . . .285

1318.3 Delivery . . . . . . . . . . . . . . . . . . . . .285

1318.4 Tubes for Medical Gas Systems . .285

1318.5 Manufacturer Markings . . . . . . . . .285

1318.6 Documentation . . . . . . . . . . . . . . .285

1319.0 Piping Materials for Field-Installed Medical-Surgical Vacuum Systems . . . . . . . . . . . . .285

1319.1 Tubes for Medical Vacuum

Systems . . . . . . . . . . . . . . . . . . . .285

1320.0 Joints and Connections . . . . . . . .286

1320.1 General . . . . . . . . . . . . . . . . . . . . .286

1320.2 Changes in Direction . . . . . . . . . .286

1321.0 Brazed Joints . . . . . . . . . . . . . . . .286

1321.1 Brazed Joints and Fittings . . . . . .286

1321.2 Tube Joints . . . . . . . . . . . . . . . . . .286

1321.3 Filler Metals . . . . . . . . . . . . . . . . .286

1321.4 Copper-to-Copper Joints . . . . . . .286

1321.5 Accessible . . . . . . . . . . . . . . . . . .286

1321.6 Purging . . . . . . . . . . . . . . . . . . . . .286

1321.7 Tube Ends . . . . . . . . . . . . . . . . . .286

1321.8 Cleaning Procedures . . . . . . . . . .286

1321.9 Brazing Dissimilar Metals . . . . . . .287

1321.10 Nitrogen Purge . . . . . . . . . . . . . . .287

1321.11 Assembling and Heating Brazed Joints . . . . . . . . . . . . . . . .287

1321.12 Inspection of Brazed Joints . . . . .287

1322.0 Welded Joints . . . . . . . . . . . . . . . .288

1322.1 Welded Joints Procedure . . . . . . .288

1322.2 Welding for Stainless Tube . . . . .288

1322.3 Memory Metal Fittings . . . . . . . . .288

1322.4 Axially Swaged Fittings . . . . . . . .288

1322.5 Threaded Fittings . . . . . . . . . . . . .288

1322.6 Other Types of Fittings . . . . . . . . .288

1322.7 Prohibited Joints . . . . . . . . . . . . . .288

1323.0 Installation of Piping and Equipment . . . . . . . . . . . . . . . . . .289

1323.1 Required Pipe Sizing . . . . . . . . . .289

Table 1323.1.5(1) System Sizing – Flow Requirements for Station Outlets and Inlets . . . . . . . . . . . . .289

Table 1323.1.5(2) Maximum Permitted Pressure Loss In Medical Gas and

Medical Vacuum Systems . . . . . . .289

1323.2 Pipe Protection . . . . . . . . . . . . . . .289

Table 1323.1.4(1) Pressure Loss for Medical Air . . . . .290

xlii 2025 CALIFORNIA PLUMBING CODE

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TABLE OF CONTENTS

Table 1323.1.4(2) Pressure Loss for Nitrogen . . . . . . .290

Table 1323.1.4(3) Pressure Loss for Nitrous Oxide and Carbon Dioxide . . . . . . .291

Table 1323.1.4(4) Pressure Loss for Oxygen . . . . . . .291

Table 1323.1.4(5) Pressure Loss for Vacuum . . . . . . .292

Table 1323.1.4(6) Pressure Loss for Vacuum (Category 3) . . . . . . . . . . . . . . . . . . .292

1323.3 Location of Piping . . . . . . . . . . . . .293

1323.4 Pipe Support . . . . . . . . . . . . . . . . .293

Table 1323.4.4 Maximum Pipe Support Spacing . . . . . . . . . . . . . . . . . . . . . .293

1323.5 Frost Protection . . . . . . . . . . . . . .293

1323.6 Connectors . . . . . . . . . . . . . . . . . .294

1323.7 Prohibited System Interconnections . . . . . . . . . . . . . .294

1323.8 Manufacturer’s Instructions . . . . .294

1323.9 Changes in System Use . . . . . . . .294

1323.10 Qualifications of Installers . . . . . .294

1323.11 Qualification of Brazing Procedures and Brazing . . . . . . . .295

1323.12 Breaching or Penetrating Medical Gas Piping . . . . . . . . . . .295

1323.13 Labeling, Identification and Operating Pressure . . . . . . . . . . .295

1323.14 Identification of Shutoff Valves . . .295

1323.15 Identification . . . . . . . . . . . . . . . . .296

1324.0 Performance Criteria and Testing Category 1 (Gases, Medical Surgical Vacuum) . . . . . .296

1324.1 Where Required . . . . . . . . . . . . . .296

1324.2 Breached Systems . . . . . . . . . . . .296

1324.3 Test Gas . . . . . . . . . . . . . . . . . . . .296

1324.4 Initial Piping Blowdown . . . . . . . . .296

1324.5 Initial Pressure Tests– Medical

Gas and Vacuum Systems . . . . . .296

Table 1324.5.11 Gas Concentrations . . . . . . . . . . .299

PART III Category 2 Piped Gas and Vacuum Systems . . . . . . . . . . . .299

1325.0 Category 2 Piped Gas and Vacuum Systems . . . . . . . . . . . . .299

1325.1 General . . . . . . . . . . . . . . . . . . . . .299

1325.2 Nature of Hazards of Gas

and Vacuum Systems . . . . . . . . .299

1325.3 Central Supply Systems . . . . . . . .299

1325.4 Category 2 Medical Air Supply Systems . . . . . . . . . . . . . .299

1325.5 Oxygen Concentrators . . . . . . . . .299

1325.6 Category 2 Medical-Surgical Vacuum . . . . . . . . . . . . . . . . . . . .299

1325.7 Valves . . . . . . . . . . . . . . . . . . . . . .299

1325.8 Station Outlets and Inlets . . . . . . .299

1325.9 Pressure and Vacuum

Indicators . . . . . . . . . . . . . . . . . . .299

1325.10 Warning Systems . . . . . . . . . . . . .299

1325.11 Category 2 Distribution . . . . . . . . .299

1325.12 Labeling and Identification . . . . . .299

1325.13 Performance Criteria and Testing — Gas, Medical–Surgical Vacuum, and WAGD . . . . . . . . . . .299

PART IV Category 3 Piped Gas and Vacuum Systems . . . . . . . . . . . .300

1326.0 Category 3 Piped Gas and Vacuum Systems . . . . . . . . . . . . .300

1326.1 General . . . . . . . . . . . . . . . . . . . . .300

1326.2 Nature of Hazards of Gas and Vacuum Systems . . . . . . . . .300

1326.3 Medical Air Supply Systems . . . . .300

1326.4 Medical–Surgical Vacuum Systems . . . . . . . . . . . . . . . . . . . .300

1326.5 Valves . . . . . . . . . . . . . . . . . . . . . .300

1326.6 Station Outlets and Inlets . . . . . . .300

1326.7 Pressure and Vacuum

Indicators . . . . . . . . . . . . . . . . . . .300

1326.8 Warning Systems . . . . . . . . . . . . .300

1326.9 Distribution . . . . . . . . . . . . . . . . . .300

1326.10 Labeling and Identification . . . . . .300

PART V Dental Gas and Vacuum Systems . . . . . . . . . . . . . . . . . . . .300

1327.0 Dental Gas and Vacuum Systems . . . . . . . . . . . . . . . . . . . .300

1327.1 General . . . . . . . . . . . . . . . . . . . . .300

1327.2 Emergency Shutoff Valves (Oxygen and Nitrous Oxide) . . . . .300

1327.3 Warning Systems (Oxygen and Nitrous Oxide) . . . . . . . . . . . .300

1327.4 Initial Pressure Test . . . . . . . . . . .301

1327.5 Maximum Copper Tube Support Spacing . . . . . . . . . . . . . .301

Table 1327.5 Maximum Copper Tube Support Spacing . . . . . . . . . . . . . .301

1327.6 Maximum Plastic Pipe Support Spacing . . . . . . . . . . . . . .301

Table 1327.6 Maximum Plastic Pipe Support Spacing . . . . . . . . . . . . . .301

1327.7 Standing Pressure Tests for Oxygen and Nitrous Oxide Piping . . . . . . . . . . . . . . . . . . . . . .301

1327.8 Verifier Operational Pressure Test . . . . . . . . . . . . . . . .302

CHAPTER 14 FIRESTOP PROTECTION . . . . . .303

1401.0 General . . . . . . . . . . . . . . . . . . . . .305

1401.1 Applicability . . . . . . . . . . . . . . . . . .305

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

TABLE OF CONTENTS

1402.0 Construction Documents . . . . . . .305

1402.1 Penetrations . . . . . . . . . . . . . . . . .305

1403.0 Installation . . . . . . . . . . . . . . . . . .305

1403.1 Materials . . . . . . . . . . . . . . . . . . . .305

1404.0 Combustible Piping Installations . . . . . . . . . . . . . . . . . .305

1404.1 General Requirements . . . . . . . . .305

1404.2 Fire-Resistance Rating . . . . . . . . .305

1404.3 Firestop Systems . . . . . . . . . . . . .305

1404.4 Connections . . . . . . . . . . . . . . . . .305

1404.5 Insulation and Coverings . . . . . . .305

1404.6 Sleeves . . . . . . . . . . . . . . . . . . . . .305

1405.0 Noncombustible Piping Installations . . . . . . . . . . . . . . . . . .305

1405.1 General Requirements . . . . . . . . .305

1405.2 Fire-Resistance Rating . . . . . . . . .305

1405.3 Firestop Systems . . . . . . . . . . . . .305

1405.4 Connections . . . . . . . . . . . . . . . . .305

1405.5 Unshielded Couplings . . . . . . . . . .306

1405.6 Sleeves . . . . . . . . . . . . . . . . . . . . .306

1405.7 Insulation and Coverings . . . . . . .306

1406.0 Required Inspection . . . . . . . . . . .306

1406.1 General . . . . . . . . . . . . . . . . . . . . .306

1406.2 Examination . . . . . . . . . . . . . . . . .306

1406.3 Penetrations . . . . . . . . . . . . . . . . .306

1406.4 Field Installations . . . . . . . . . . . . .306

CHAPTER 15 ALTERNATE WATER SOURCES

FOR NONPOTABLE

APPLICATIONS . . . . . . . . . . . . . .307

1501.0 General . . . . . . . . . . . . . . . . . . . . .309

1501.1 Applicability . . . . . . . . . . . . . . . . . .309

1501.2 System Design . . . . . . . . . . . . . . .309

1501.3 Permit . . . . . . . . . . . . . . . . . . . . . .309

1501.4 Component Identification . . . . . . .309

1501.5 Maintenance and Inspection . . . .309

1501.6 Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . .309

1501.7 Minimum Water Quality Requirements . . . . . . . . . . . . . . . .309

Table 1501.5 Recommended Minimum Alternate Water Source Testing, Inspection, and Maintenance Frequency . . . . . . . . . . . . . . . . . . .310

1501.8 Material Compatibility . . . . . . . . . .310

1501.10 System Controls . . . . . . . . . . . . . .310

1502.0 Inspection and Testing . . . . . . . . .310

1502.1 General . . . . . . . . . . . . . . . . . . . . .310

1502.2 Supply System Inspection and Test . . . . . . . . . . . . . . . . . . . .310

1502.3 Cross-Connection

Inspection and Testing . . . . . . . . .310

1502.4 Separation Requirements . . . . . . .311

1502.5 Abandonment . . . . . . . . . . . . . . . .311

1502.6 Sizing . . . . . . . . . . . . . . . . . . . . . .312

1503.0 Gray Water Systems . . . . . . . . . .312

1503.1 General . . . . . . . . . . . . . . . . . . . . .312

1503.2 System Requirements . . . . . . . . .313

1503.3 Connections to Potable and

Reclaimed (Recycled) Water Systems . . . . . . . . . . . . . . . . . . . . .313

1503.4 Location . . . . . . . . . . . . . . . . . . . .313

1503.5 Plot Plan Submission . . . . . . . . . .313

1503.6 Prohibited Location . . . . . . . . . . . .313

Table 1503.4 Location of Gray Water System . . .314

1503.7 Drawings and Specifications . . . .314

1503.8 Procedure for Estimating Gray Water Discharge . . . . . . . . .314

1503.9 Gray Water System Components . . . . . . . . . . . . . . . . .315

1504.0 Subsurface Irrigation System Zones . . . . . . . . . . . . . . . .316

1504.1 General . . . . . . . . . . . . . . . . . . . . .316

1504.2 Required Area of Subsurface Irrigation Fields, Subsoil Irrigation Fields, and Mulch Basins . . . . . . . . . . . . . . . .316

1504.3 Determination of Maximum

Absorption Capacity . . . . . . . . . . .316

Table 1504.2 Design of Six Typical Soils . . . . . .316

1504.4 Groundwater Level . . . . . . . . . . . .316

Mulch Basin Construction . . . . . .316

Table 1504.5.3 Subsoil Irrigation Field Construction . . . . . . . . . . . . . . . . .318

Table 1504.5.5 Subsurface Irrigation Design Criteria for Six Typical Soils . . . . .318

1504.8 Gray Water System Color and Marking Information . . . . . . . .318

1504.9 Other Collection and

Distribution Systems . . . . . . . . . . .318

1504.10 Testing . . . . . . . . . . . . . . . . . . . . .318

1504.11 Maintenance . . . . . . . . . . . . . . . . .318

1505.0 Recycled Water Supply Systems in Buildings . . . . . . . . . .318

1505.1 General . . . . . . . . . . . . . . . . . . . . .318

1505.2 Permit . . . . . . . . . . . . . . . . . . . . . .319

1505.3 System Changes . . . . . . . . . . . . .319

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1505.4 Connections to Potable or Recycled Water Supply Systems . . . . . . . . . . . . . . . . . . . .319

1505.5 Water Pressure . . . . . . . . . . . . . . .319

1505.6 Initial Cross-Connection Test . . . .319

1505.7 Recycled Water Supply System Materials . . . . . . . . . . . . .319

1505.8 Recycled Water Supply System Color and Marking Information . . . . . . . . . . . . . . . . . .319

1505.9 Valves . . . . . . . . . . . . . . . . . . . . . .319

1505.10 Hose Bibbs . . . . . . . . . . . . . . . . . .320

1505.11 Required Appurtenances . . . . . . .320

1505.12 Pipe Separation in Trenches . . . .320

1505.13 Signage . . . . . . . . . . . . . . . . . . . .320

1505.14 Inspection and Testing . . . . . . . . .320

Requirements for Reclaimed (Recycled) Water . . . . . . . . . . . . .322

Table 1505.16 Minimum Reclaimed (Recycled) Water Source Testing, Inspection, and Maintenance Frequency . . . . . . .322

1506.0 On-Site Treated Nonpotable Gray Water Systems . . . . . . . . . .322

1506.1 General . . . . . . . . . . . . . . . . . . . . .322

1506.2 Plumbing Plan Submission . . . . . .322

1506.3 System Changes . . . . . . . . . . . . .322

1506.4 Connections to Potable or Recycled Water Supply Systems . . . . . . . . . . . . . . . . . . . .322

1506.5 Water Pressure . . . . . . . . . . . . . . .322

1506.6 Initial Cross-Connection Test . . . .323

1506.7 On-Site Treated Nonpotable Gray Water System Materials . . .323

1506.8 On-Site Treated Nonpotable Gray Water Devices and Systems . . . . . . . . . . . . . . . . . . . .323

1506.9 On-Site Treated Nonpotable Gray Water System Color and Marking Information . . . . . . . . . . .323

1506.10 Design and Installation . . . . . . . . .323

1506.11 Valves . . . . . . . . . . . . . . . . . . . . . .323

1506.12 Signs . . . . . . . . . . . . . . . . . . . . . . .323

1506.13 Inspection and Testing . . . . . . . . .323

CHAPTER 16 NONPOTABLE RAINWATER

CATCHMENT SYSTEMS . . . . . . .325

1601.0 General . . . . . . . . . . . . . . . . . . . . .327

1601.1 Applicability . . . . . . . . . . . . . . . . . .327

1601.2 System Design . . . . . . . . . . . . . . .327

1601.3 Permit . . . . . . . . . . . . . . . . . . . . . .327

1601.4 Component Identification . . . . . . .327

1601.5 Maintenance and Inspection . . . .327

Table 1601.5 Minimum Alternate Water Source Testing, Inspection, and Maintenance Frequency . . . .327

1601.6 Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . .328

1601.7 Minimum Water Quality Requirements . . . . . . . . . . . . . . . .328

1601.8 Material Compatibility . . . . . . . . . .328

1601.9 System Controls . . . . . . . . . . . . . .328

1601.10 Separation Requirements . . . . . . .328

1601.11 Abandonment . . . . . . . . . . . . . . . .328

1601.12 Sizing . . . . . . . . . . . . . . . . . . . . . .328

1602.0 Nonpotable Rainwater Catchment Systems . . . . . . . . . . .328

1602.1 General . . . . . . . . . . . . . . . . . . . . .328

1602.2 Plumbing Plan Submission . . . . . .328

1602.3 System Changes . . . . . . . . . . . . .328

1602.4 Connections to Potable or Reclaimed (Recycled) Water Systems . . . . . . . . . . . . . . .328

1602.5 Initial Cross-Connection Test . . . .328

1602.6 Sizing . . . . . . . . . . . . . . . . . . . . . .328

1602.7 Rainwater Catchment System Materials . . . . . . . . . . . . . . . . . . . .329

1602.8 Rainwater Catchment System Color and Marking Information . . .329

1602.9 Deactivation and Drainage for Cross-Connection Test . . . . . . . . .329

1603.0 Design and Installation . . . . . . . . .329

1603.1 Rainwater Catchment Systems . . .329

1603.2 Outside Hose Bibbs . . . . . . . . . . .329

1603.3 Rainwater Catchment

Collection Surfaces . . . . . . . . . . . .329

1603.4 Minimum Water Quality . . . . . . . .329

1603.5 Rainwater Storage Tanks . . . . . . .329

1603.6 Location . . . . . . . . . . . . . . . . . . . .329

1603.7 Above Grade . . . . . . . . . . . . . . . .329

1603.8 Below Grade . . . . . . . . . . . . . . . . .329

Table 1603.4 Minimum Water Quality . . . . . . . .330

1603.9 Drainage and Overflow . . . . . . . . .330

1603.10 Opening and Access Protection . . .330

1603.11 Marking . . . . . . . . . . . . . . . . . . . . .330

1603.12 Storage Tank Venting . . . . . . . . . .330

1603.13 Pumps . . . . . . . . . . . . . . . . . . . . .330

1603.14 Roof Drains . . . . . . . . . . . . . . . . . .331

1603.15 Water Quality Devices and Equipment . . . . . . . . . . . . . . . . . .331

1603.16 Freeze Protection . . . . . . . . . . . . .331

1603.17 Debris Removal . . . . . . . . . . . . . .331

1603.18 Required Filters . . . . . . . . . . . . . .331

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1603.19 Roof Gutters . . . . . . . . . . . . . . . . .331

1603.20 Rainwater Diversion Valves . . . . .331

1604.0 Signs . . . . . . . . . . . . . . . . . . . . . . .331

1604.1 General . . . . . . . . . . . . . . . . . . . . .331

1604.2 Commercial, Industrial,

Institutional and Residential

Restroom Signs . . . . . . . . . . . . . .331

1604.3 Equipment Room Signs . . . . . . . .331

1605.0 Inspection and Testing . . . . . . . . .331

1605.1 General . . . . . . . . . . . . . . . . . . . . .331

1605.2 Supply System Inspection and Test . . . . . . . . . . . . . . . . . . . .331

1605.3 Cross-Connection Inspection and Testing . . . . . . . . . . . . . . . . . .331

CHAPTER 17 REFERENCED STANDARDS . . .333

1701.0 General . . . . . . . . . . . . . . . . . . . . .335

1701.1 Standards . . . . . . . . . . . . . . . . . . .335

Table 1701.1 Referenced Standards . . . . . . . . .335

1701.2 Standards, Publications, Practices, and Guides . . . . . . . . .352

Table 1701.2 Standards, Publications, Practices, and Guides . . . . . . . . .352

APPENDICES TABLE OF CONTENTS . . . . . . . .363

Appendix A Recommended Rules for Sizing the Water Supply System . . . . . . . . . . . . . . . . . . . . .365

Appendix B Explanatory Notes on Combination Waste and Vent

Systems . . . . . . . . . . . . . . . . . . . .381

Appendix C Alternate Plumbing Systems . . . .385

Appendix D Sizing Storm Water Drainage Systems . . . . . . . . . . . . . . . . . . . .395

Appendix E Manufactured/Mobile Home Parks and Recreational

Vehicle Parks . . . . . . . . . . . . . . . .405

Appendix F Firefighter Breathing Air Replenishment Systems . . . . . . . .417

Appendix G Sizing of Venting Systems . . . . . .423

Appendix H Private Sewage Disposal Systems . . . . . . . . . . . . . . . . . . . .435

Appendix I Installation Standards . . . . . . . . . .447

Appendix J Combination of Indoor and Outdoor Combustion and

Ventilation Opening Design . . . . .487

Appendix K Potable Rainwater Catchment Systems . . . . . . . . . . .491

Appendix L Sustainable Practices . . . . . . . . . .497

Appendix M Peak Water Demand Calculator . . . . . . . . . . . . . . . . . . .517

Appendix N Impact Of Water Temperature On The Potential for Scalding and Legionella Growth . . . . . . . . .525

Appendix O Non-Sewered Sanitation Systems . . . . . . . . . . . . . . . . . . . .531

Appendix P Professional Qualifications . . . . . .535

Appendix Q Indoor Horticultural Facilities . . . .539

Appendix R Tiny Houses . . . . . . . . . . . . . . . . .543

Appendix S Onsite Stormwater Treatment Systems . . . . . . . . . . . . . . . . . . . .547

USEFUL TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . .553

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . .563

HISTORY NOTE

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . .589

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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.)

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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.)

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

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CHAPTER 1

ADMINISTRATION

DIVISION I

CALIFORNIA ADMINISTRATION

1.1.0 General.

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

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

and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.

1.1.3.1 Non-State-Regulated Buildings, Structures, and Applications. Except as modified by local ordinance pur- suant to Section 1.1.8, the following standards in the Cal- ifornia Code of Regulations, Title 24, Parts 2, 2.5, 3, 4, 5, 6, 7, 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 fol- lowing buildings, structures, and applications regulated by state agencies as specified in Sections 1.2.0 through 1.14.0, except where modified by local ordinance pur- suant to Section 1.1.8. When adopted by a state agency, the provisions of this code shall be enforced by the appro- priate enforcing agency, but only to the extent of author- ity 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 con- structed by the Trustees of the California State Uni- versity, 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 Con- sumer 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, pub- lic swimming pools, radiation protection, commis- saries serving mobile food preparation vehicles, 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 serv- ing 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 multi- family dwellings which are regulated by the Depart- ment of Housing and Community Development. See Section 1.8.2.1.2 for additional scope provisions.

9. Permanent buildings and permanent accessory buildings or structures constructed within mobile- home 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 Sec- tion 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.

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13. General acute care hospitals, acute psychiatric hos- pitals, skilled nursing and/or intermediate care facil- ities, clinics licensed by the Department of Public Health, and correctional treatment centers regulated by the Department of Health Care Access and Infor- mation/Office of Statewide Hospital Planning and Development. See Section 1.10.0 for additional scope provisions.

14. Applications regulated by the Office of State Fire Marshal include but are not limited to 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 eld- erly, children’s nursery, children’s home or institution, school or any similar occupancy of any capacity.

1.3. Theater, dancehall, skating rink, audito- rium, 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, entertainment, instruction, delib- eration, worship, drinking or dining, awaiting transportation, or education.

1.4. Small family day care homes, large family day-care homes, residential facilities and resi- dential facilities for the elderly, residential 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 com- bustible 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 con- structed and renovated using funds from the Cali- fornia 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 Chapter 11A, and 11B.

18. Section 1.14.0 is reserved for Marine Oil Terminals regulated by the California State Lands Commission.

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 reference documents of this code. When this code does not specifically cover any subject related to building design and construction, recognized architectural or engineering practices shall be employed. The National Fire Codes, standards, and the Fire Protection Handbook of the National Fire Protection Asso- ciation are permitted to be used as authoritative guides in determining recognized fire prevention engineering practices.

1.1.6 Non-Building Standards, Orders, and Regulations. Requirements contained in the Uniform Plumbing 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 regula- tions, 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 ref- erence 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, 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 accor- dance with the California Building Code.

1.1.8 City, County, or City and County Amendments, Addi- tions 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 dif- ferences to the provisions contained in this code pursuant to complying with Section 1.1.8.1. The effective date of amend- ments, additions, or deletions to this code by 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, addi- tions or deletions to this code be effective any sooner than the effective date of this code.

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DIVISION I CALIFORNIA ADMINISTRATION

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 geo- logical conditions.

Exception: Hazardous building ordinances and pro- grams mitigating unreinforced masonry buildings.

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 per- mit 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.

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 Depart- ment-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 Regulations, Title 25, Division 1, Chapter 3, Sub- chapter 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 Plumbing Code by reference on a chapter-by-chapter basis. When a specific chapter of the Uniform Plumbing Code is not printed in the code and is marked “Reserved”, such chapter of the Uniform Plumbing Code is not adopted as a portion of this code. When a specific chapter of the Uniform Plumbing 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 sec- tions within a chapter are applicable to buildings under the authority of a specific state agency, but they are not to be con- sidered 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), includ- ing buildings constructed by the Trustees of the Califor- nia 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.

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 Califor- nia, California State Universities, and California Com- munity 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.

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DIVISION I CALIFORNIA ADMINISTRATION

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 Build- ing Code, except for buildings subject to building stan- dards 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.

Reference – 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 and Rehabilita- tion] state agencies or state entities authorized to con- struct state buildings may appoint a building official who is responsible to the agency for enforcement of the pro- visions 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 sec- tion 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 Alternate Materials, Design, and Methods of Con- struction and Equipment. The provisions of this code are not intended to prevent the installation of any material or to pro- hibit 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 qual- ity, strength, effectiveness, fire resistance, durability, and safety.

1.2.3.1 Research Reports. Supporting data, where nec- essary to assist in the approval of materials or assem- blies 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 requirements 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 evi- dence of compliance to be made at no expense to the jurisdiction. Test methods shall be as specified in this code or by other recognized 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.

1.3.0 Board of State and Community Corrections.

1.3.1 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.

Application – Local detention facilities.

Enforcing Agency – Board of State and Community Cor- rections.

Authority Cited – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.

References – Penal Code Section 6030; Welfare and Institutions Code Sections 210 and 885.

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1.3.2 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 BSCC.

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 Barbering and Cosmetology.

Application – Any establishment or mobile unit where barbering, cosmetology, or electrolysis is being per- formed.

Enforcing Agency – State or local agency specified by applicable provisions of law.

Authority Cited – Business and Professions Code Sec- tion 7312.

References – Business and Professions Code Sections 7303, 7303.1, 7312, and 7313.

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 Department of Food and Agriculture.

1.6.1 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.

Application – Dairies and places of meat and poultry

inspection.

Enforcing Agency – Department of Food and Agricul-

ture.

Authority Cited – Food and Agricultural Code Sections

18735, 18960, 19384, 33481, and 33731.

References – Food and Agricultural Code Sections 18735, 18960, 19384, 33481, and 33731.

1.6.2 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 AGR.

1.7.0 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 – Commissaries serving mobile food prepa- ration units, food establishments, and organized camps.

Enforcing Agency – Department of Health Services and local health agency.

Authority Cited – Health and Safety Code Sections 18897.2, 110065, 113710, and 131200.

References – Health and Safety Code Sections 18897.2, 18897.4, 18897.7, 110065, 113705, 113710, 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 mini- mum requirements necessary to protect the health, safety, and general welfare of the occupants and the public by governing the erection, construction, reconstruction, enlargement, con- version, alteration, repair, moving, removal, demolition, san- itation, ventilation, and maintenance or use of plumbing equipment or systems.

1.8.2 Authority and Abbreviations.

1.8.2.1 General. The Department of Housing and Com- munity Development is authorized by law to promulgate and adopt building standards and regulations for several types of building applications. The applications under the authority of the Department of Housing and Com- munity 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 Division 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,

8698.4, 12955.1 and 12955.1.1. California Code of Regulations, Title 20, Sections 1605.1, 1605.3 and 1607.

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1.8.2.1.2 Housing Accessibility.

Application – Covered multifamily dwellings as defined in Chapter 2 of the California Code of Reg- ulations, Title 24, Part 2, also known as the Cali- fornia Building Code including but not limited to lodging houses, dormitories, timeshares, condo- miniums, shelters for homeless persons, congregate residences, apartments, dwellings, employee hous- ing, 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 abbrevi- ation “HCD 1-AC” require specific accommoda- tions for persons with disabilities, as defined in Chapter 2 of the California Building Code. The application of such provisions shall be in conjunc- tion 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:

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 exist- ing covered multifamily dwellings.

3. Additions to existing buildings, where the addi- tion alone meets the definition of covered mul- tifamily 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. Pub- lic use areas, public accommodations, and public housing, as defined in Chapter 2 of the California 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 hous- ing, 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 Sections 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 Sec- tions 1101.4, 1101.5, 1954.201 and 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 per- tain to applications listed in this section are identi- fied using the abbreviation “HCD 2”.

Enforcing Agency – The Department of Housing and Community Development, local building department or other local agency that has assumed responsibility 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, com- mencing 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 Gov- ernment 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 Regulations, 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 reg- ulations 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, condomini- ums, hotels, motels, lodging houses, and dwellings, including accessory buildings, facilities, and uses thereto.

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The provisions regulating the erection and con- struction 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 con- structed before or after the effective date of this code.

For additional information regarding the use and occupancy of existing buildings and appurtenant struc- tures, see California Code of Regulations, Title 25, Divi- sion 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 below:

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, Division 1, Chapter 1, Subchapter 1, commencing with Section 1, for the erection, construction, recon- struction, movement, enlargement, conversion, alteration, repair, removal, demolition, or arrange- ment 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 adminis- trative and enforcement authority, permits, fees, vio- lations, 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, com- mencing 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, com- mencing 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 plumbing system.

Exceptions:

1. Work exempt from permits as specified in Chapter 1, Administration, Division II, Section 104.2 items (1)-(2) 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 enforc- ing agency.

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 gov- erning 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 Hous- ing and Community Development. The amount of the fees shall not exceed the amount reasonably necessary 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, Division 1, Chapter 1, Subchapter 1, Article 3, com- mencing with Section 6.

1.8.4.3 Plan Review and Time Limitations. Subject to other provisions of law, provisions related to plan check- ing, prohibition of excessive delays, and contracting with or employment of private parties to perform plan check- ing 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.

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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 develop- ments as defined in Section 4100 of the Cali- fornia 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 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, com- mencing with Section 17910, and California Code of Regulations, Title 25, Division 1, Chapter 1, Sub- chapter 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 Cal- ifornia 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 Hous- ing 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 Cali- fornia 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 pro- visions adopted by the Department of Housing and Com- munity 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 Depart- ment of Housing and Community Development, those provisions shall be applicable and shall become effec- tive 180 days after publication by the California Build- ing Standards 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 applicable portions of this code, shall also become effective 180 days after publication of the Cali- fornia Building Standards Code by the California Build- ing Standards Commission.

1.8.6.2 Findings, Filings, and Rejections of Local Mod- ifications. Prior to making any modifications or estab- lishing 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 neces- sary due to local climatic, geological, or topographical 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 a 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 pre- scribed by this code. Consideration and approval of alternates shall comply with Section 1.8.7.2 for local

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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 depart- ment of any city, county, or city and county may approve alternates for use in the erection, construction, recon- struction, 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 Sec- tion 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, 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 bil- ity in covered multifamily dwellings or facilities 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 pur- suant 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 alternates 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 pur- pose, 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 enforc- ing agency relative to the application and interpretation of this code and other regulations governing construction use, maintenance and change of occupancy. The govern- ing body of any city, county, or city and county may estab- lish 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 knowledgeable in the applicable building codes, reg- ulations 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.

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 gov- erning 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, maintenance, and change of occupancy of buildings and structures, includ- ing 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 gov- erning 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.

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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, pro- ceedings, 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.

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 Cal- ifornia 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, Sub- chapter 1, commencing with Section 3000.

1.8.9.2 Actions and Proceedings. Subject to other pro- visions of law, punishments, penalties, and fines for vio- lations 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 Cal- ifornia 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, Sub- chapter 1, commencing with Section 3000.

1.8.10 Other Building Regulations.

1.8.10.1 Existing Structures. Notwithstanding other pro- visions of law, the replacement, retention, and extension of original materials and the use of original methods of construction for any existing building or accessory struc- ture, 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 Sec- tions 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 origi- nal methods of construction so long as the structure does not become or continue to be a substandard building.

Note:

Authority Cited – Health and Safety Code Sections 17040, 17050, 17920.9, 17921, 17921.5, 17921.6, 17921.10, 17922, 17922.6, 17922.12, 17922.14, 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, and 19990, and Government Code Sections 12955.1 and 12855.1.1.

References – Health and Safety Code Sections 17000 through 17062.5, 17910 through 17995.5, 18200 through 18700, 18860 through 18874, 18938.6, 18941, 18941.5, 19890, 19891, 19892 and 19960 through 19997; Civil Code Sections 1101.4, 1101.5, 1954.201, 1954.202 and 5551; and Government Code Sections 8698.4, 12955.1, 12955.1.1 and 65852.2. California Code of Regulations, Title 20, Sections 1605.1, 1605.3 and 1607.

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1.9.0 Division of the State Architect.

1.9.1 Division of the State Architect – Access Compliance. Note: Buildings or facilities where accessibility is required for applications listed in California Code of Regulations, Title 24, Part 2 (California Building Code), Chapter 1, Section 1.9.1 regulated by the Division of the State Architect–Access Compliance shall comply with Title 24, Part 2, Chapter 11A or 11B, as applicable under authority cited by CA Govern- ment Code Section 4450 and in reference cited by CA Gov- ernment Code Sections 4450 through 4461, 12955.1(c), and CA Health and Safety Code Sections 18949.1, 19952 through 19959.

1.9.1.1 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.9.1 will be identified in the Matrix Adoption Tables under the acronym DSA-AC.

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 dele- gated the responsibility and authority by the Department of General Services to review and approve the design and oversee and observe the construction of public elemen- tary and secondary schools, community colleges, and state-owned or state-leased essential services buildings.

Authority Cited – Education Code Section 17310 and 81142, and Health and Safety Code Section 16022.

References – Education Code Sections 17280 through 17317 and 81130 through 81147, and Health and Safety Code Sections 16000 through 16023.

1.9.2.1.1 Adopting Agency Identification. The pro- visions of this code applicable to buildings identi- fied 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 dele- gated the authority by the Department of General Serv- ices 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 dele- gated the authority by the Department of General Serv- ices 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.

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 Department of Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Development.

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 build- ings. [OSHPD 1R] Non-conforming hospital SPC or free- standing buildings that have been removed from acute care service.

Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Development (OSHPD). The office shall 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.

1.10.1.1 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 Sub- section 1.10.1 will be identified in the Matrix Adoption 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.

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Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Devel- opment (OSHPD). The office shall also enforce the Division of the State Architect access compliance regu- lations 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 Sub- section 1.10.2 will be identified in the Matrix Adoption 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 Sub- section 1.10.3 will be identified in the Matrix Adoption 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.

OSHPD 4

Application – Correctional Treatment Centers. Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Devel- opment (OSHPD). The office shall also enforce the Division of the State Architect access compliance regu- lations 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 Sub- section 1.10.4 will be identified in the Matrix Adoption 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 spe- cific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 5

Application – Acute psychiatric hospital buildings. Enforcing Agency – Health Care Access and Informa- tion/Office of Statewide Hospital Planning and Devel- opment (OSHPD). The office shall also enforce the Division of the State Architect – Access Compliance reg- ulations 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 I, 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 Sub- section 1.10.5 will be identified in the Matrix Adoption Tables under the Acronym OSHPD 5.

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1.10.6 OSHPD 6. Specific scope of application of the agency responsible for enforcement, enforcement agency and the spe- cific authority to adopt and enforce such provisions of this code, unless otherwise stated.

OSHPD 6

Application – Chemical dependency recovery hospital not within an acute care hospital building or an acute psychiatric facility.

Enforcing Agency – Local building department.

1.10.6.1 Applicable Administrative Standards.

1. Title 24, Part 1, California Code of Regulations: Chapter 7.

2. Title 24, Part 2, California Code of Regulations: Section 1.1.0 and 1.10.0, Chapter 1 Division I, and as indicated in the adoption matrix for Chapter I, Division II.

1.10.6.2 Applicable Building Standards. California Build- ing Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.

The provision of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.6.

Authority Cited – Health and Safety Code Sections 1275, 18929 and 129850.

References – Health and Safety Code Sections 1250.3 and 129675-130070.

1.10.6.3 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Sub- section 1.10.6 will be identified in the Matrix Adoption Tables under the Acronym OSHPD 6.

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 enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

Application:

Institutional, Educational, or any Similar Occupancy. Any building or structure used or intended for use as an asylum, jail, mental hospital, hospital, sanitarium, home for the aged, children’s nursery, children’s home, 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 Eld- erly. Authority Cited – Health and Safety Code Section 13133. Reference – Health and Safety Code Section 13143.

Any State Institution or Other State-Owned or Specified State-Occupied Building. Specified State-Occupied Buildings. Any building, structure or area that meets any of the following criteria: 1. A building where the state has contracted into a build-to- suit lease.

2. A courthouse holding facility or trial court with a deten- tion area.

3. A building used by the Department of Corrections and Rehabilitation (CDCR) as a community correctional reentry center. 4. 100 percent state occupied. 5. State-occupied areas in a state-leased building that is a high-rise and is 75 percent of the net area floor space or more occupied by state entities. 6. State-occupied areas in a building that contains 5,000 square feet (465 m [2] ) or more space of state-leased Group H or Group L occupancy. 7. A state-leased building with facilities with the primary purpose of housing state records and/or state artifacts of historical significance. 8. Properties leased by California State University (CSU). 9. State institutions and their real property. 10. CAL FIRE occupied areas in leased buildings. 11. State-leased facilities where the governing body’s fire pro- tection services rely on an all-volunteer fire department. Authority Cited – Health and Safety Code Sections 13108, 13145, 13146, 16022.5 and 17921.

Reference – Health and Safety Code Sections 13108, 13143, 13145, 13146, 16022.5 and 17921.

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.

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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, apartment houses, less than 75 feet (22 860 mm) above the lowest floor level having building access, wherein rooms used for sleep- ing 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 hous- ing 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 Con- nection 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 Connec- tion 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.

Wildland-Urban Interface Fire Area.

Authority Cited – Health and Safety Code Sections 13143, 13108.5(a), and 18949.2(b) and (c); and Government Code Section 51189.

References – Health and Safety Code Sections 13143, Gov- ernment 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 Mar- shal and published in the California Building Stan- dards Code relating to fire and panic safety and other regulations of the State Fire Marshal shall except as provided in Section 1.11.2.1.2 be as fol- lows:

1. The city, county, or city and county, with juris- diction in the area affected by the standard or regulation 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 occupan- cies, 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 rep- resentative.

1.2. The chief building official of the city, county, or city and county, or an authorized rep- resentative.

2. The chief of any city or county fire department or of any fire protection district, and authorized representatives, shall enforce within the juris- diction the building standards and other regu- lations 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 regu- lations of the State Fire Marshal in areas out- side of corporate cities and districts providing fire protection services.

4. The State Fire Marshal shall have authority to enforce the building standards and other regu- lations 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 serv- ice for which the fee is charged pursuant to Sec- tion 66014 of the Government Code.

1.11.2.1.2 Pursuant to Health and Safety Code Sec- tion 13108, and except as otherwise provided in this section, building standards adopted by the State Fire Marshal published in the California Building Stan-

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dards Code relating to fire and panic safety 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-occupied build- ings, 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 Build- ing Standards Code. Authorization from the State Fire Marshal shall be limited to those fire depart- ments or fire districts which maintain a fire-preven- tion 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 Mar- shal to make fire-prevention inspections of state- owned or state-occupied buildings, other than state institutions, may be appealed to the State Fire Mar- shal. 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, deter- mine 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 Mar- shal shall review the issue with the appropriate local enforcing agency prior to rendering such code inter- pretation.

1.11.2.1.3 Pursuant to Health and Safety Code Sec- tion 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 imprisonment 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 pur- pose of preparing a fire-suppression preplanning pro- gram 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 build ing 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 Build- ing Standards.

1.11.2.3.1 Any fire-protection district organized pur- suant to Health and Safety Code Part 2.7 (com- mencing 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 modifica- tions 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.

hal 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 modifica- tions 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 ordinance for public hearing, provide a copy of that ordinance, 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 dis- trict 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 writ- ten statement describing the reasons for any modi- fications 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 ratification 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 and county together with the

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adopted ordinance expressly marked and identified to which each finding refers, in accordance with Section 1.1.8.1(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 construc- tion, method of installation of equipment, or means of protection shall be made in writing to the enforcing agency by the owner or the owner’s authorized repre sen- tative and shall be accompanied by a full statement of the conditions. Sufficient evidence or proof shall be submit- ted to substantiate any claim that may be made regarding its conformance. The enforcing agency may require tests and the submission of a test report from an approved test- ing organization as set forth in Title 19, California Code of Regulations, to substantiate the equivalency of the pro- posed alternative means of protection.

conditions. Sufficient evidence or proof shall be submit-_ ted to substantiate any claim that may be made regarding its conformance. The enforcing agency may require tests and the submission of a test report from an approved test- ing organization as set forth in Title 19, California Code of Regulations, to substantiate the equivalency of the pro- posed alternative means of protection.

When a request for alternate means of protection involves hazardous materials, the Authority Having Jurisdiction may consider implementation of the findings and recommendations identified in a Risk Management Plan (RMP) developed in accordance with Title 19, Divi- sion 2, Chapter 4.5, Article 3.

Approval of a request for use of an alternative mate- rial, assembly of materials, equipment, method of con- struction, 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 speci- fied in these regulations in quality, strength, effective- ness, 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. In addition to the provisions of this Section, see Title 24, Part 2, California Building Code, Appendix Chapter 1, Section 106 for additional requirements.

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 dia- grams 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 new construction high-rise buildings. Such plans and specifications shall be submitted to the enforc- ing 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 specifica- tions shall be prepared by an engineer duly quali- fied in that branch of engineering necessary to perform such services. 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 construction may be adminis- tered by an engineer duly qualified to perform such services and holding a valid certificate under Chap- ter 7 (commencing with Section 65700) of Division 3 of the Business and Professions Code for per- formance 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 prevent- ing the design of fire-extinguishing systems by per- sons 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 spec- ifications 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 accordance 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 inspection.

1.11.4.2 Large Family Day Care. Pursuant to Health and Safety Code Section 1597.46, Large Family Day-

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DIVISION I CALIFORNIA ADMINISTRATION

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.

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 Preinspection, 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 jurisdic- tion, shall conduct a preinspection of the facility prior to the final fire clearance approval. At the time of the prein- spection, the primary fire enforcing agency shall price consultation and interpretation of the fire safety regula- tions and shall notify the prospective licensee of the facil- ity 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 of the preinspection services may be charged for the preinspection 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 prelicen- sure inspection by the State Department of Social Serv- ices, whichever is later.

Pursuant to Health and Safety Code Section 13235, a preinspection fee equal to, but not exceeding, the actual cost of the 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 regulations pursuant to state law or regula- tion 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 Mar- shal. 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 applicable 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, Sec- tions 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 previ- ous code, provided there is no change in the use or char- acter 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 Build- ing 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 will be identified in the Matrix Adoption Tables under the acronym SFM.

1.12.0 Reserved for the State Librarian.

1.13.0 Department of Water Resources (DWR).

1.13.1 Application – Design standards to safely plumb build- ings with both potable and recycled water systems.

Enforcing Agency – State or local agency specified by the applicable provisions of law.

Authority Cited – Water Code Section 13557.

References – Water Code Section 13553.

1.13.2 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 DWR.

1.14.0 Reserved for the State Lands Commission.

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DIVISION II

SCOPE AND ADMINISTRATION