CPC · California Plumbing Code
Who must design the system and what are the exemptions?
For homeowners: if a plumbing system requires an engineered or alternative design (for example, large recycled-water systems or other non‑standard solutions), a licensed design professional must prepare and seal the plans; routine repairs and some small or listed fixtures are exempt or handled by a licensed contractor.
Last reviewed: July 6, 2026
What the code requires — plain English
The California Plumbing Code (CPC) makes the design professional responsible for the design of plumbing systems when the work rises to the level of an engineered or alternative design; the installer/contractor is responsible for correct installation in accordance with the approved documents. The controlling sections you asked about — § 1501.2 and § 1601.2 — are referenced in the uploaded materials but their full text was not included in the provided files; the CPC index in the upload lists § 1501.2 and § 1601.2 as applicable sections.
The key rule: when the work requires an engineered (or “alternative engineered”) design, a Registered Design Professional (RDP) must prepare and seal the design; routine repairs and some limited work are exempt or may be handled by a licensed plumbing contractor.
Requirements in detail
Who is the responsible designer?
Registered Design Professional (RDP) — required for alternative engineered designs and other situations where the CPC specifies design submittal and professional sealing. See § 301.5.1–301.5.6 (alternative engineered designs require the RDP to note the design on the permit application, supply technical data, submit signed and sealed design documents, and provide for testing/independent review as the Authority Having Jurisdiction (AHJ) may require).
Licensed plumbing contractor — responsible for installing the system per the approved plans; some limited systems or specific small-scale designs (including certain tall-wood building exceptions) may be allowed to be designed by a licensed plumbing contractor where the CPC explicitly permits it. For example, tall wood (mass timber) building plumbing systems “shall be designed by a licensed plumbing contractor or a registered design professional” per § 301.6.
Authority Having Jurisdiction (AHJ) — has discretion to require independent review, testing and to accept or reject alternative engineered designs.
Decision table (what triggers which designer)
| Decision dimension | Value / Trigger | Who must design | Code reference |
|---|---|---|---|
| Alternative engineered design (nonprescriptive solution) | Any plumbing system submitted as an alternative engineered design | Registered Design Professional (RDP) — signed & sealed documents required | § 301.5.1 – § 301.5.6 |
| Recycled (reclaimed) water supply system within/part of a building | Permitted uses in Chapter 15; permit and complete plumbing plans required before permit issuance | Plumbing plans to be submitted and approved — complex recycled systems typically require engineered plans (AHJ determines if RDP required) | § 1505.2 / § 1505.2.1 |
| Tall wood (mass timber) buildings | Plumbing systems in tall wood buildings | Licensed plumbing contractor or RDP; must comply with CPC and building code movement accommodation | § 301.6 |
| Routine repairs / clearing stoppages | Small repairs that do NOT require replacement/rearrangement of piping/fixtures | Typically no RDP required; contractor may perform repairs (permit requirements vary) | (See general administration / permit exceptions) |
| One- and two-family dwelling private sewage disposal / minimum plumbing facilities | When alternative facilities are approved by local health authority | Exempt from certain CPC provisions — local health authority approval required instead | § 301.7 |
| Fixtures that do not require water or are listed as not requiring water | Listed fixtures not connected to water | No RDP; not subject to water-supply requirements | § 601.2, Exception (1) |
What the CPC requires the RDP to supply (when RDP is required)
- Notation on the permit application that the plumbing system (or part) is an alternative engineered design (§ 301.5.1).
- Sufficient technical data to substantiate performance (§ 301.5.2).
- Two complete sets of signed and sealed design documents (floor plans, riser diagrams, directions of flow, sizes, grades, loads, fixture locations) for submittal to the AHJ (§ 301.5.3).
- Testing/inspection plan and compliance with testing authority of AHJ; AHJ may require independent review at applicant expense (§ 301.5.5 – § 301.5.6).
Exceptions & special cases
The uploaded files show an index entry for § 1501.2 and § 1501.2 Exceptions (the CPC adoption matrix lists these sections), but the full text of § 1501.2 and § 1601.2 themselves was not present in the provided files, so specific language of those two sections could not be quoted here. The index listing is visible in the uploaded CPC files.
Recycled water systems — must have permits and approved plumbing plans before work begins; the AHJ may require RDP-prepared plans depending on system complexity; the CPC requires complete plans be submitted for recycled water supply systems prior to permit issuance (§ 1505.2 / § 1505.2.1).
One- and two-family dwelling private sewage — private sewage disposal and certain minimum plumbing facilities for one- and two-family dwellings may be outside the CPC when local health authority approves alternate systems (§ 301.7).
Listed fixtures that don’t require water — these are explicitly exempt from water-supply requirements (see § 601.2 Exceptions).
Emergency repairs — Building/administration provisions allow emergency work to be performed with permit application submitted within specified timeframes after the work; this practical exception can affect whether immediate RDP involvement is required (see building administration excerpts).
Common mistakes
Assuming the installer/contractor can sign or accept an engineered design in place of an RDP when the CPC requires a signed/sealed design. The CPC explicitly requires the RDP to sign and seal alternative engineered designs and to note the permit application accordingly (§ 301.5.1 – § 301.5.3).
Submitting incomplete technical documentation for alternative designs — the AHJ can deny the permit or require independent review if the documentation is inadequate. The CPC requires “sufficient technical data” and allows AHJ-ordered independent review at applicant expense (§ 301.5.2, § 301.5.5).
Overlooking AHJ discretion on recycled water and cross-connection control — recycled water systems have specific permit and plan submission requirements and are subject to state water board policies; the CPC requires consultation and plan approval prior to permits for recycled water supply systems (§ 1505.2 / § 1505.2.1).
Treating “repair” as design work — replacing or rearranging piping or fixtures can trigger permit and design requirements; simple repairs that do not require replacement/rearrangement are treated differently under administrative provisions.
Worked example — recycled water toilet/irrigation system for a 60-unit apartment building
Scenario: Owner wants to connect reclaimed (recycled) water for toilet flushing and landscape irrigation in a new 60-unit apartment building.
Steps and application of code:
Determine applicability: CPC Chapter on alternate water sources requires a permit for recycled water supply systems within or part of the building; § 1505.2 says no permit shall be issued until complete plumbing plans satisfactory to the AHJ are submitted.
Plan level: Because the system supplies toilets and irrigation and connects to building plumbing, the AHJ will expect detailed plumbing plans (riser diagrams, flow directions, backflow prevention, cross-connection controls). For a project of this scale, the AHJ will typically require an RDP-signed and sealed engineered design and technical substantiation. The CPC’s alternative-engineered-design rules require the RDP to indicate the alternative engineered design on the permit and to provide signed/sealed documents (§ 301.5.1–301.5.3).
Submittal: The design team (RDP) provides two complete signed and sealed sets showing branch sizes, riser diagrams, cross-connection protection, locations of fixtures, and testing plans as required by § 301.5.3–301.5.6.
AHJ action: The AHJ reviews plans, may request additional technical data or independent review (at applicant expense), and issues the permit only after the recycled water plumbing plans are approved, per § 1505.2.1.
Result: For this 60-unit project, the practical and code expectation is an RDP-prepared engineered design, sealed and submitted with sufficient technical substantiation; a licensed contractor installs to the approved plans.
Related provisions (CPC & referenced material)
- § 301.5.1 – § 301.5.6 — Alternative engineered design procedures; RDP responsibilities.
- § 301.6 — Tall wood (mass timber) building plumbing design requirement (licensed plumbing contractor or RDP).
- § 301.7 — One- and two-family dwelling exemptions for private sewage disposal and minimum plumbing facilities (local health authority approval).
- § 1505.2 / § 1505.2.1 — Recycled water supply systems: permit requirement and plumbing plan submission.
- § 601.2 — Water supply and listed exceptions (fixtures not requiring water).
- CPC index entries showing § 1501.2 and § 1501.2 Exceptions (index/adoption matrix; full text not found in uploaded files).
Note about § 1501.2 and § 1601.2: The uploaded material includes index/adoption listings that reference § 1501.2 and § 1601.2, but the file set provided did not include the full textual content of those particular sections, so direct quoting or citing their precise wording is not possible from the files you uploaded. The practical guidance above is grounded in the CPC provisions that were present in the provided files (Chapter 1 general administration, § 301.5 alternative engineered designs, § 1505 recycled water, § 601 water supply, etc.).
Code references
Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:
CPC § 13.5 Medium relevance — show source text
[OSHPD 1, 2, 4 & 5] Weight of equipment is greater than 200 pounds (90 kg) and center of mass located greater than 4 feet (1219 mm) measured from the finished floor.
8. Equipment with hazardous contents. 9. Other architectural, mechanical and electrical components stated in Chapter 13. [DSA-SS] Cabinets shall be restrained in a manner approved by the enforcement agency if they could fall and block a required means of egress. 10. Wall-, Roof- or Floor-Hung Equipment: Seismic design and seismic details shall be provided for wall-, roof- or floor- hung nonstructural components and equipment when the component weighs more than 20 pounds (9 kg) or, in the case of a distribution system, 5 pounds per foot (73 N/m).
[OSHPD 1, 2, 4 & 5] Exemptions:
1. Furniture except storage cabinets as noted in Table 13.5-1. 2. Nonstructural components and equipment, that are attached to the building, provided that the component weighs 20 pounds (9 kg) or less or, in the case of a distribution system, 5 pounds per foot (73 N/m) or less. Seismic design and seis- mic details need not be provided. 3. Seismic design need not be provided for discrete architectural, mechanical and electrical components and equipment that are attached to the building and anchorage is detailed on the construction documents, provided that the compo- nent weighs 400 pounds (181.4 kg) or less, and the center of mass is located 4 feet (1219 mm) or less above the adjacent floor or roof level that directly support the component and flexible connections are provided between the component and associated ductwork, piping and conduit where required.
[DSA-SS] Exemptions: The following nonstructural components are exempt from the requirements of ASCE 7, Chapter 13: 1. Furniture except storage cabinets as noted in Table 13.5-1. 2. Nonstructural components and equipment that are positively attached to the structure, provided that the component weighs 20 pounds (9 kg) or less. 3. Discrete architectural, mechanical and electrical components and equipment that are positively attached to the structure, provided that the component weighs 400 pounds (181.4 kg) or less, and the center of mass is located 4 feet (1219 mm) or less above the adjacent floor or roof level that directly supports the component, flexible connections are provided between the component and associated ductwork, piping and conduit where required, and the component importance factor, I p , is equal to 1.0. 1617A.1.19 ASCE 7, Section 13.4 Replace ASCE 7, Sections 13.4.2.3, with the following:
13.4.2.3 Prequalified post-installed anchors and specialty inserts in concrete and masonry.
CPC § 1603.10 Medium relevance — show source text
9
1603.10 A & B
1603.12
1603.20
1604.1 - 1604.3
1605.3
1605.3.2
1605.3.3BSC BSC-
CGSFM HCD Col6 Col7 DSA Col9 Col10 OSHPD Col12 Col13 Col14 Col15 Col16 Col17 BSCC DPH AGR DWR CEC CA SL SLC Adopting Agency
Adopt Entire Chapter
Adopt Entire Chapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
Chapter/Section
1601.2
1601.3 & Exceptions 1 & 2
1601.5
1601.6
1601.7
1602.4_& Exceptions_
1602.7
1603.3
1603.3.1 &Exception
1603.4
1603.4.1
Table 1603.4
1603.7
1603.8
1603.9
1603.10_A & B_
1603.12
1603.20
1604.1 - 1604.3
1605.3
1605.3.2
1605.3.3BSC BSC-
CGSFM 1 2 1-AC AC ** SS** SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6 Adopting Agency
Adopt Entire Chapter
Adopt Entire Chapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
Chapter/Section
1601.2
1601.3 & Exceptions 1 & 2
1601.5
1601.6
1601.7
1602.4_& Exceptions_
1602.7
1603.3
1603.3.1 &Exception
1603.4
1603.4.1
Table 1603.4
1603.7
1603.8
1603.9
1603.10_A & B_
1603.12
1603.20
1604.1 - 1604.3
1605.3
1605.3.2
1605.3.3Adopting Agency
Adopt Entire Chapter
Adopt Entire Chapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
Chapter/Section
1601.2
1601.CPC § 9.2 Medium relevance — show source text
9.2|||||||X|||||||||||||||||| |1617A.1.18||||||||||||X|||X||||||||||
The 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.
2025 CALIFORNIA BUILDING CODE 16A-1
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16A-2 2025 CALIFORNIA BUILDING CODE
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16 A STRUCTURAL DESIGN
User notes:
About this chapter: Chapter 16A prescribes minimum structural loading requirements for use in the design and construction of structures regulated by the Division of the State Architect-Structural Safety—including public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Section 1.9.2.1 [DSA-SS])—and by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development—including hospitals and correctional treatment centers (applications listed in Sections 1.10.1 [OSHPD 1] and 1.10.4 [OSHPD 4]).
SECTION 1601 A —GENERAL
1601 A .1 Scope. The provisions of this chapter shall govern the structural design of buildings, structures and portions thereof.
1601A.1.1 Application. The scope of application of Chapter 16A is as follows: 1. Structures regulated by the Division of the State Architect-Structural Safety (DSA-SS), which include those applications listed in Section 1.9.2.1. These applications include public elementary and secondary schools, community colleges and state- owned or state-leased essential services buildings. 2. Applications listed in Sections 1.10.1 and 1.10.4, regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). These applications include hospitals and correctional treatment
centers.
1601A.1.2 Amendments in this chapter. DSA-SS and OSHPD adopt this chapter and all amendments.
Exception: Amendments adopted by only one agency appear in this chapter preceded with the appropriate acronym of the adopt- ing agency, as follows: 1. Division of the State Architect-Structural Safety:
[DSA-SS] – For applications listed in Section 1.9.2.1. 2. Office of Statewide Hospital Planning and Development:
[OSHPD 1] – For applications listed in Section 1.10.1.
[OSHPD 4] – For applications listed in Section 1.10.4.
1601A.2 Enforcement agency approval. In addition to the requirements of the California Administrative Code and the California Build- ing Code, any aspect of project design, construction, quality assurance or quality control programs for which this code requires approval by the Registered Design Professional (RDP), are also subject to approval by the enforcement agency.
SECTION 1602 A —NOTATIONS
CPC § 1505.1.1 Medium relevance — show source text
The provisions in this section_ encompass the installation, construction, alteration, and repair of recycled water supply systems that are within or a part of a building, including a landscape irrigation system that connects to plumbing that is within or a part of a building, and receive reclaimed (recycled) water provided by a water/wastewater util- ity. When dealing with recycled water supply systems, the Authority Having Jurisdiction and Enforcing Agency may include the recycled water purveyor or potable water purveyor in accordance with their respective statutory authority and responsibility as provided on their respective permits for sup- plying water. Plumbing systems using reclaimed (recycled) water that do not enter the interior of a building plumbed with potable water are not encompassed by this section. All reclaimed (recycled) water use, covered and not covered by this code, is subject to applicable provisions of the State Water Resources Control Board’s Cross-Connection Control Policy Handbook and the California Code of Regulations: Title 22 and Title 23 .
1505.1.1 Allowed Uses. Allowed uses shall include water closets, urinals, trap primers for floor drains and floor sinks, aboveground and subsurface irrigation, industrial or commercial cooling or air conditioning and other uses as generally allowed in the California Code of Regulations, Title 22, Division 4, Chapter 3 and specifi- cally allowed in the permit for the facility producing or supplying the reclaimed (recycled) water issued by the State Water Resources Control Board or Regional Water Quality Control Board .
1505.1.2 Structures Allowed for Toilet and Urinal Flushing. In accordance with Water Code Section 13553, reclaimed (recycled) water shall be allowed for toilet and urinal flushing in certain structures. These structures include commercial, retail, and office buildings, theaters, auditoriums, condominium projects, schools, hotels, apart-
318 2025 CALIFORNIA PLUMBING CODE
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
ments, barracks, dormitories, jails, prisons, reformatories, and other structures as determined by the State Water Resources Control Board.
1505.2 Permit. It shall be unlawful for a person to construct, install, alter, or cause to be constructed, installed, or altered a recycled water supply system within a building or on its premises without first obtaining a permit to do such work from the Authority Having Jurisdiction.
Prior to commencing the issuance of permits for recy- cled water supply systems pursuant to state requirements relating to recycled water, a city, county, city and county or other local agency shall seek consultation with the State Water Resources Control Board, local public health depart- ment and local recycled water purveyor to ensure that state and local public health concerns are addressed in local stan- dards or ordinances, or in issuing permits.
1505.2.1 Plumbing Plan Submission. No permit for a recycled water supply system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved.
CPC § 100.0 Medium relevance — show source text
Exception 1 to Section 100.0(f): If one occupancy constitutes at least 80 percent of the conditioned floor area of the building, the entire building envelope, HVAC and water heating may be designed to comply with the provisions of Part 6 applicable to that occupancy, provided that the applicable lighting requirements in Sections 140.6 through 140.8, 150.0(k), or 160.5 and 170.2(e) are met for each occupancy and space, and mandatory measures in Sections 110.0 through 130.5, 150.0, and 160.0 through 160.9 are met for each occupancy and space.
Exception 2 to Section 100.0(f): If one occupancy constitutes at least 90 percent of the combined conditioned plus unconditioned floor area of the building, the entire building indoor lighting may be designed to comply with only the lighting provisions of Part 6 applicable to that occupancy.
(g) Administrative requirements. Administrative requirements relating to permit requirements, enforcement by the Commission, locally adopted energy standards, interpretations, claims of exemption, approved calculation methods, rights of appeal, and certification and labeling requirements of fenestration products and roofing products are specified in California Code of Regulations, Title 24, Part 1, Sections 10-101 to 10-114.
(h) Certification requirements for manufactured equipment, products and devices. Part 6 limits the installation of manufactured equipment, products and devices to those that have been certified as specified by Sections 110.0 and 110.1. Requirements for manufactured equipment, products, and devices, when not specified in Title 24 Part 6, are specified in California Code of Regulations, Title 20, Sections 1601–1609.
Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code . Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5, 25402.8, and 25943, Public Resources Code .
SECTION 100.1 — DEFINITIONS AND RULES OF CONSTRUCTION
(a) Rules of Construction.
- Where the context requires, the singular includes the plural and the plural includes the singular.
- The use of “and” in a conjunctive provision means that all elements in the provision must be complied with or must exist to make the provision applicable. Where compliance with one or more elements suffices, or where existence of one or more elements makes the provision applicable, “or” (rather than “and/or”) is used.
- “Shall” is mandatory and “may” is permissive.
(b) Definitions. Terms, phrases, words and their derivatives in Part 6 shall be defined as specified in Section 100.1. Terms, phrases, words and their derivatives not found in Section 100.1 shall be defined as specified in the “Definitions” chapters of Title 24, Parts 1 through 5 of the California Code of Regulations. Where terms, phrases, words and their derivatives are not defined in any of the references above, they shall be defined as specified in Webster’s Third New International Dictionary of the English Language, Unabridged (1961 edition, through the 2002 addenda), unless the context requires otherwise.
CPC § 100.1 Medium relevance — show source text
36 2025 CALIFORNIA ENERGY CODE
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ALL OCCUPANCIES—GENERAL PROVISIONS
FIGURE 100.1-A CALIFORNIA CLIMATE ZONES
Climate Zones for Residential and Nonresidential Occupancies
2025 CALIFORNIA ENERGY CODE 37
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38 2025 CALIFORNIA ENERGY CODE
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2 ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE
MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS
SECTION 110.0—SYSTEMS AND EQUIPMENT—GENERAL
Sections 110.1 through 110.12 specify requirements for manufacturing, construction and installation of certain systems, equipment, appliances and building components that are installed in buildings within the scope of Section 100.0(a).
Note: The requirements of Sections 110.0 through 110.12 apply to newly constructed buildings. Sections 141.0 and 150.2 specify which requirements of Sections 110.1 through 110.12 also apply to additions and alterations to existing buildings.
(a) General Requirements. Systems, equipment, appliances and building components shall only be installed in a building within the scope of Section 100.0(a) regulated by Part 6 only if:
- The manufacturer has certified that the system, equipment, appliances or building component complies with the applicable manufacturing provisions of Sections 110.1 through 110.12; and
- The system, equipment, appliance or building component complies with all applicable installation provisions of Sections 110.1 through 110.12.
(b) Certification Requirements for Manufactured Systems, Equipment, Appliances and Building Components.
- Appliances that are within the scope of Section 1601 of the Appliance Efficiency Regulations shall only be installed if they have been certified to the Energy Commission by the manufacturer, pursuant to the provisions of Title 20 California Code of Regulations, Section 1606; or
- Systems, equipment, appliances and building components that are required by Part 6 or the Reference Appendices to be certified to the Energy Commission, which are not appliances that are within the scope of Section 1601 of the Appliance Efficiency Regulations, shall only be installed if they are certified by the manufacturer in a declaration, executed under penalty of perjury under the laws of the State of California, that: A. All the information provided pursuant to the certification is true, complete, accurate and in compliance with all applicable requirements of Part 6; and B. The equipment, product, or device was tested using the test procedure specified in Part 6 if applicable
- The certification status of any system, equipment, appliance or building component shall be confirmed only by reference to: A. A directory published or approved by the Commission; or B. A copy of the application for certification from the manufacturer and the letter of acceptance from the Commission staff; or C. Written confirmation from the publisher of a Commission-approved directory that a device has been certified; or D. A Commission-approved label on the device.
Note: Part 6 does not require a builder, designer, owner, operator, or enforcing agency to test any certified device to determine its compliance with minimum specifications or efficiencies adopted by the Commission.
CPC § 1607A.9.2 Medium relevance — show source text
Adopting agency BSC BSC-
CGSFM HCD Col6 Col7 DSA Col9 Col10 OSHPD Col12 Col13 Col14 Col15 Col16 Col17 BSCC DPH AGR DWR CEC CA SL SLC Adopting agency BSC BSC-
CGSFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6 Adopt entire chapter X X X X Adopt entire chapter as
amended (amended
sections listed below)Adopt only those sections
that are listed belowX X X Chapter / Section 1607A.9.2 X 1617A.1.18 X X The 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.
2025 CALIFORNIA BUILDING CODE 16A-1
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
16A-2 2025 CALIFORNIA BUILDING CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
16 A STRUCTURAL DESIGN
User notes:
About this chapter: Chapter 16A prescribes minimum structural loading requirements for use in the design and construction of structures regulated by the Division of the State Architect-Structural Safety—including public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Section 1.9.2.1 [DSA-SS])—and by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development—including hospitals and correctional treatment centers (applications listed in Sections 1.10.1 [OSHPD 1] and 1.10.4 [OSHPD 4]).
SECTION 1601 A —GENERAL
1601 A .1 Scope. The provisions of this chapter shall govern the structural design of buildings, structures and portions thereof.
CPC § 1.69 Medium relevance — show source text
SC.M|1.69 ×TDA + 4.71|AHRI 1200| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Vertical Open
(VOP)|0 (L)|<32|VOP.SC.L|4.25 ×TDA + 11.82|4.25 ×TDA + 11.82| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Semivertical Open
(SVO)|38 (M)|≥32|SVO.SC.M|1.70 ×TDA + 4.59|1.70 ×TDA + 4.59| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Semivertical Open
(SVO)|0 (L)|<32|SVO.SC.L|4.26 ×TDA + 11.51|4.26 ×TDA + 11.51| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Horizontal Open
(HZO)|38 (M)|≥32|HZO.SC.M|0.72 ×TDA + 5.55|0.72 ×TDA + 5.55| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Horizontal Open
(HZO)|0 (L)|<32|HZO.RC.L|1.90 ×TDA + 7.08|1.90 ×TDA + 7.08| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Vertical Closed
Transparent (VCT)|38 (M)|≥32|VCT.SC.M|0.10 ×V + 0.86|0.10 ×V + 0.86| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Vertical Closed
Transparent (VCT)|0 (L)|<32|VCT.SC.L|0.29 ×V + 2.95|0.29 ×V + 2.95| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Vertical Closed
Solid (VCS)|38 (M)|≥32|VCS.SC.M|0.05 ×V + 1.36|0.05 ×V + 1.36| |Self-contained
commercial
refrigerators and
commercial
freezers with and
with outdoors|
Self-contained
(SC)|Vertical Closed
Solid (VCS)|0 (L)|<32|VCS.SC.L|0.22 ×V + 1.38|0.22 ×V + 1.CPC § 2303.4.1.2.1 Medium relevance — show source text
2303.4.1.2.1 Trusses installed without a diaphragm. Trusses installed without a diaphragm on the top or bottom chord shall require a project specific PITMR and PITMDB design prepared by a registered design professional.
Exception: Group U occupancies.
2303.4.1.3 Trusses spanning 60 feet or greater. The owner or the owner’s authorized agent shall contract with any qualified registered design professional for the design of the temporary installation restraint and diagonal bracing and the PITMR and PITMDB for all trusses with clear spans 60 feet (18 288 mm) or greater.
2303.4.1.4 Truss designer. The individual or organization responsible for the design of trusses.
2303.4.1.4.1 Truss design drawings. Where required by the registered design professional, the building official or the statutes of the jurisdiction in which the project is to be constructed, each individual truss design drawing shall bear the seal and signature of the truss designer.
Exceptions:
- Where a cover sheet and truss index sheet are combined into a single sheet and attached to the set of truss design drawings, the single cover/truss index sheet is the only document required to be signed and sealed by the truss designer.
- Where a cover sheet and a truss index sheet are separately provided and attached to the set of truss design drawings, the cover sheet and the truss index sheet are the only documents required to be signed and sealed by the truss designer. 3. [DSA-SS, DSA-SS/CC and OSHPD 1, 1R, 2, 4 & 5] Exceptions 1 and 2 are not permitted by DSA and OSHPD.
2303.4.2 Truss placement diagram. The truss manufacturer shall provide a truss placement diagram that identifies the proposed location for each individually designated truss and references the corresponding truss design drawing. The truss placement diagram shall be provided as part of the truss submittal package, and with the shipment of trusses delivered to the job site. Truss placement diagrams that serve only as a guide for installation and do not deviate from the permit submittal drawings shall not be required to bear the seal or signature of the truss designer.
2303.4.3 Truss submittal package. The truss submittal package provided by the truss manufacturer shall consist of each individual truss design drawing, the truss placement diagram, the permanent individual truss member restraint/bracing method and details and any other structural details germane to the trusses; and, as applicable, the cover/truss index sheet.
2303.4.3.1 Additional requirements. [DSA-SS, DSA-SS/CC and OSHPD 1, 1R, 2, 4 & 5] In addition to Sections 2303.4.1 and 2303.4.2, the following requirements apply: 1. Construction documents. The construction documents prepared by the registered engineer or licensed architect for the project shall indicate all requirements for the truss design, including:
1.1 Deflection criteria.
CPC § 301.5.1 Medium relevance — show source text
301.5.1 Permit Application. The registered design professional shall indicate on the design documents that the plumbing system, or parts thereof, is an alternative engineered design so that it is noted on the construction permit application. The permit and permanent permit records shall indicate that an alternative engineered design was part of the approved installation. 301.5.2 Technical Data. The registered design professional shall submit sufficient technical data to substantiate the proposed alternative engineered design and to prove that the performance meets the intent of this code. 301.5.3 Design Documents. The registered design professional shall provide two complete sets of signed and sealed design documents for the alternative engineered design for submittal to the Authority Having Jurisdiction. The design documents shall include floor plans and a riser diagram of the work. Where appropriate, the design documents shall indicate the direction of flow, pipe sizes, grade of horizontal piping, loading, and location of fixtures and appliances. 301.5.4 Design Approval. An approval of an alternative engineered design shall be at the discretion of the Authority Having Jurisdiction. The exercise of this discretionary approval by the Authority Having Jurisdiction shall have no effect beyond the jurisdictional boundaries of said Authority Having Jurisdiction. An alternative engineered design so approved shall not be considered as in accordance with the requirements, intent, or both of this code for a purpose other than that granted by the Authority Having Jurisdiction. 301.5.5 Design Review. The Authority Having Jurisdiction shall have the authority to require testing of the alternative engineered design in accordance with Section 301.3.1, including the authority to require an independ
ent review of the design documents by a registered design professional selected by the Authority Having Jurisdiction and at the expense of the applicant. 301.5.6 Inspection and Testing. The alternative engineered design shall be tested and inspected in accordance with the submitted testing and inspection plan and the requirements of this code. 301.6 Tall Wood (Mass Timber) Buildings. Plumbing systems installed in tall wood (mass timber) buildings, shall comply with the following:
(1) Be designed by a licensed plumbing contractor or a registered design professional in accordance with this code and the building code.
(2) Be designed to accommodate expansion, contraction, and differential movement between parts of a tall wood (mass timber) building in accordance with Section 312.2. 301.7 One- and Two-Family Dwellings. [HCD 1] The provisions contained in this code shall not apply to one- and two-family dwelling private sewage disposal systems and minimum plumbing facilities when alternate facilities or installations have been approved by the local health author- ity, provided that such alternative facilities or installations provide substantially equivalent or greater protection to health and safety. 301.8 OSHPD 1R. [OSHPD 1R] For OSHPD 1R, refer to Section 309 of the California Existing Building Code for gen- eral requirements.
302.0 Iron Pipe Size (IPS) Pipe. 302.1 General. Iron, steel, copper, and copper alloy pipe shall be standard-weight iron pipe size (IPS) pipe.
303.0 Disposal of Liquid Waste. 303.1 General. It shall be unlawful for a person to cause, suffer, or permit the disposal of sewage, human excrement, or other liquid wastes, in a place or manner, except through and by means of an approved drainage system, installed and maintained in accordance with the provisions of this code.
CPC § 170.2 Medium relevance — show source text
2(c)|170.2(c)| |Multifamily|Water Heating|110.3, 160.4|170.2(d)|170.2(d)|170.2(d)| |Multifamily|Indoor Lighting|110.9, 160.5|170.2(e)|170.2(e)|170.2(e)| |Multifamily|Outdoor Lighting|110.9, 160.5|170.2(e)|170.2(e)|170.2(e)| |Multifamily|Electrical Power Distribution|110.11, 160.6|N.A.|N.A.|N.A.| |Multifamily|Pool and Spa Systems|110.4, 110.5, 160.7|110.4, 110.5, 160.7|110.4, 110.5, 160.7|110.4, 110.5, 160.7| |Multifamily|Solar Ready Buildings|110.10, 160.8|110.10, 160.8|110.10, 160.8|110.10, 160.8| |Multifamily|Electric Ready|160.9|160.9|160.9|N.A.| |Multifamily|Solar PV and Battery Energy
Storage Systems|N.A.|170.2(f), (g), (h)|170.1|N.A.| |N.A. = Not Applicable
1.
Nonresidential and hotel/motel buildings that contain covered processes may conform to the applicable requirements of both occupancy types listed in this table.
Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1,Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5,
25402.8 and 25943,Public Resources Code.|N.A. = Not Applicable
1.
Nonresidential and hotel/motel buildings that contain covered processes may conform to the applicable requirements of both occupancy types listed in this table.
Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1,Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5,
25402.8 and 25943,Public Resources Code.|N.A. = Not Applicable
1.
Nonresidential and hotel/motel buildings that contain covered processes may conform to the applicable requirements of both occupancy types listed in this table.
Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1,Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5,
25402.8 and 25943,Public Resources Code.|N.A.CPC § 106.4 Medium relevance — show source text
[A] 106.4 Amended construction documents. Work shall be installed in accordance with the reviewed construction documents, and any changes made during construction that are not in compliance with the approved construction documents shall be resubmitted for approval as an amended set of construction documents.
[A] 106.5 Retention of construction documents. One set of approved construction documents shall be retained by the code official for a period of not less than the period required for retention of public records.
[A] 106.6 Design professional in responsible charge. Where it is required that documents be prepared by a registered design professional, the code official shall be authorized to require the owner or the owner’s authorized agent to engage and designate on the building permit application a registered design professional who shall act as the registered design professional in responsible charge. If the circumstances require, the owner or the owner’s authorized agent shall designate a substitute registered design professional in responsible charge who shall perform the duties required of the original registered design professional in responsible charge. The code official shall be notified in writing by the owner or the owner’s authorized agent if the registered design professional in responsible charge is changed or is unable to continue to perform the duties. The registered design professional in responsible charge shall be responsible for reviewing and coordinating submittal documents prepared by others, including phased and deferred submittal items, for compatibility with the design of the building. Where structural observation is required, the inspection program shall name the individual or firms who are to perform structural observation and describe the stages of construction at which structural observation is to occur.
SECTION 107—TEMPORARY USES, EQUIPMENT AND SYSTEMS
[A] 107.1 General. The code official is authorized to issue a permit for temporary uses, equipment and systems. Such permits shall be limited as to time of service but shall not be permitted for more than 180 days. The code official is authorized to grant extensions for demonstrated cause. [OSHPD 1, 1R, 2, 4 & 5] OSHPD shall only grant one extention when cause is demonstrated.
[A] 107.2 Conformance. Temporary uses shall conform to the requirements of this code as necessary to ensure health, safety and general welfare.
[A] 107.3 Temporary service utilities. The code official is authorized to give permission to temporarily supply service utilities in accordance with Section 111.
[A] 107.4 Termination of approval. The code official is authorized to terminate such permit for a temporary use and to order the same to be discontinued.
SECTION 108—FEES
[A] 108.1 Payment of fees. A permit shall not be valid until the fees prescribed by law have been paid, nor shall an amendment to a permit be released until the additional fee, if any, has been paid.
[A] 108.2 Schedule of permit fees. Where a permit is required, a fee for each permit shall be paid as required, in accordance with the schedule as established by the applicable governing authority.
CPC § 37-14 Medium relevance — show source text
- It is accept-_ able to use ballasts for seismic or wind bracing supports and attachments and limit the design to overturning only without the consideration of sliding, unless directly or indirectly supported by the building structure. 3) Anticipated duration of use must be specified. b. Wind design speeds may be reduced as prescribed in ASCE 37-14 or other standard approved by OSHPD. c. Piping, conductors and ductwork shall be supported. Seismic design for supports and attachments of piping, conductors and ductwork is not required.
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STRUCTURAL DESIGN
7. Other Equipment: Equipment shall be anchored where any of the following apply: a. [OSHPD 1, 2, 4 & 5] Essential to hospital operations and weight of equipment is greater than 100 pounds (45 kg).
[DSA-SS] Weight of equipment is greater than 100 pounds (45 kg) and essential to operations for emergency preparedness, communications and operations centers, and other facilities required for emergency response of state-owned essential services buildings as defined in the California Administrative Code (Title 24, Part 1, CCR) Section 4-207 and all structures required for their continuous operation or access/egress. b. [OSHPD 1, 2, 4 & 5] Could fall within the patient care vicinity as defined in Article 517.2 of the California Electrical Code.
c. Could fall and block a required means of egress. d. [OSHPD 1, 2, 4 & 5] Weight of equipment is greater than 400 pounds (181.4 kg). e. [DSA-SS] Weight of equipment is greater than 400 pounds (181.4 kg) or center of mass is located greater than 4 feet (1219 mm) above the finished floor or roof level that directly supports the component.
[OSHPD 1, 2, 4 & 5] Weight of equipment is greater than 200 pounds (90 kg) and center of mass located greater than 4 feet (1219 mm) measured from the finished floor.
8. Equipment with hazardous contents. 9. Other architectural, mechanical and electrical components stated in Chapter 13. [DSA-SS] Cabinets shall be restrained in a manner approved by the enforcement agency if they could fall and block a required means of egress. 10. Wall-, Roof- or Floor-Hung Equipment: Seismic design and seismic details shall be provided for wall-, roof- or floor- hung nonstructural components and equipment when the component weighs more than 20 pounds (9 kg) or, in the case of a distribution system, 5 pounds per foot (73 N/m).
[OSHPD 1, 2, 4 & 5] Exemptions:
1. Furniture except storage cabinets as noted in Table 13.5-1. 2. Nonstructural components and equipment, that are attached to the building, provided that the component weighs 20 _pounds (9 kg) or less or, in the case of a distribution system, 5 pounds per foot (73 N/m) or less.
CPC § 1502.2 Medium relevance — show source text
1||||X|X|||||||||||||||||||| |1502.2||||X|X|||||||||||||||||||| |1503.3 – 1503.4|||X|||||||||||||||||||||| |1505 – 1507|||X|||||||||||||||||||||| |1507.3.10||||||||X|X|X|X|X||X|X|||||||||| |1507.7.8||||||||X|X|X|X|X||X|X|||||||||| |1509 – 1511|||X|||||||||||||||||||||| |1511.9.6||||||X|X|||||||||||||||||| |1511.10– 1511.10.1|X|||X|X|||X|X|X|X|X||X|X|||||||||| |1512|||X|||||||||||||||||||||| |1513||||||||X|X|X|X|X||X|X||||||||||
The state agency does not adopt sections identified by the following symbol:
The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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15 ROOF ASSEMBLIES AND ROOFTOP STRUCTURES
User notes:
About this chapter: Chapter 15 provides minimum requirements for the design and construction of roof assemblies and rooftop structures. The criteria address the weather-protective barrier at the roof and, in most circumstances, a fire-resistant barrier. The chapter is largely prescriptive in nature and is based on decades of experience with various traditional materials, but it also recognizes newer products. Section 1511 addresses rooftop structures, which include penthouses, tanks, towers and spires. Rooftop penthouses larger than prescribed in this chapter must be treated as a story under Chapter 5.
ICC code development note: Code change proposals to sections preceded by the designation [BF] or [P] will be considered by one of the code development committees meeting during the 2024 (Group A) Code Development Cycle. All other code change proposals will be considered by a code development committee meeting during the 2025 (Group B) Code Development Cycle.
SECTION 1501—GENERAL
1501.1 Scope. The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies, and rooftop structures.
SECTION 1502—ROOF DRAINAGE
[P] 1502.1 General. Design and installation of roof drainage systems shall comply with this section, Section 1611 of this code and Chapter 11 of the California Plumbing Code .
[P] 1502.2 Secondary (emergency overflow) drains or scuppers. Where roof drains are required, secondary (emergency overflow) roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason. The installation and sizing of secondary emergency overflow drains, leaders and conductors shall comply with Section 1611 of this code and Chapter 11 of the California Plumbing Code .
CPC § 1319.0 Medium relevance — show source text
(4) Vacuum receiver.
(5) Piping between the vacuum pump(s), discharge(s), receiver(s), and vacuum source shutoff valve in accordance with Section 1319.0, except brass, galvanized, or black steel pipe, which is permitted to be used as recommended by the manufacturer.
(6) Except as defined in Section 1312.2(1) through Section 1312.2(5), materials and devices used between the medical vacuum exhaust and the medical vacuum source that are permitted to be of any design or construction appropriate for the service as determined by the manufacturer.
(7) Vacuum filtration per Section 1312.4. [NFPA 99:5.1.3.7.1.1]
1312.3 Vacuum Receivers. Receivers for vacuum shall meet the following requirements:
(1) They shall be made of materials deemed suitable by the manufacturer.
(2) They shall comply with Section VIII.1, “Unfired Pressure Vessels,” of the ASME Boiler and Pressure Vessel Code.
(3) They shall be capable of withstanding a gauge pressure of 60 psi (414 kPa) and 30 inch (762 mm) gauge HgV.
(4) They shall be equipped with a manual drain.
(5) They shall be of a capacity based on the technology of the pumps. [NFPA 99:5.1.3.7.3]
1312.4 Vacuum Filtration. Central supply systems for vacuum other than liquid ring pumps shall be provided with inlet filtration with the following characteristics:
(1) Filtration shall be at least duplex to allow one filter to be exchanged without impairing the vacuum system.
(2) Filtration shall be located on the patient side of the vacuum producer.
(3) Filters shall be efficient to 0.3 µ and 99.97 percent HEPA or better, per DOE-STD-3020.
(4) Filtration shall be sized for 100 percent of the peak calculated demand while one filter or filter bundle is iso lated.
(5) It shall be permitted to group multiple filters into bundles to achieve the required capacities.
(6) The system shall be provided with isolation valves on the source side of each filter or filter bundle and isolation valves on the patient side of each filter or filter bundle, permitting the filters to be isolated without shutting off flow to the central supply system.
(7) A means shall be available to allow the user to observe any accumulations of liquids.
2025 CALIFORNIA PLUMBING CODE 281
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS
(8) A vacuum relief petcock shall be provided to allow vacuum to be relieved in the filter canister during filter replacement.
(9) Filter elements and canisters shall be permitted to be constructed of materials as deemed suitable by the manufacturer.
(10)In normal operation, one filter or filter bundle shall be isolated from the system to be available for service should a blockage in the operating filter occur or rotation of the filters be desired after filter element exchange.
[NFPA 99:5.1.3.7.4] 1312.5 Piping Arrangement and Redundancies. Piping arrangement shall be as follows:
(1) Piping shall be arranged to allow service and a continuous supply of medical-surgical vacuum in the event of a single fault failure.
CPC § 18934.7. Medium relevance — show source text
ADMINISTRATION
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 California, California State Universities and California Community Colleges.
Enforcing agency— State or local agency specified by the applicable provisions of law.
Authority cited— Government Code Section 14617.
Reference— Government Code Section 14617.
3. Existing state-owned buildings, including those owned by the University of California and by the California State University.
Application— Building seismic retrofit standards 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— Health and Safety Code Section 16600.
Reference— Health and Safety Code Sections 16600 through 16604. 4. Unreinforced masonry-bearing wall buildings.
Application— Minimum seismic strengthening standards for buildings specified in Appendix Chapter A1 of the California Existing Building Code, except for buildings subject to building standards pursuant to Health and Safety Code (commencing) with Section 17910.
Enforcing agency— State or local agency specified 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 Section 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 Rehabilitation] State agencies or state entities authorized to construct state buildings may appoint a building official who is responsible to the agency for enforcement of the provisions of the California Building Standards Code.
Exception: State buildings regulated by other sections of this code remain the enforcement responsibility of the designated entities.
1.2.1.3 Enforcement. Reserved for DGS.
1.2.1.4 Adopting agency identification. The provisions of this code applicable to buildings identified in this section will be identified in the Matrix Adoption Tables under the acronym BSC .
1.2.2 BSC-CG. Specific scope of application of the agency responsible for enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. 1. Green building standards for nonresidential occupancies.
Application— All occupancies where no state agency has the authority to adopt green building standards 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(a), 18938 and 18940.5.
CPC § 1229.3 Medium relevance — show source text
1229.3 Definitions. The definitions provided under Section 1224.3 apply to this section except as modified below:
BASIC SERVICES. Basic services mean those essential services required by law for licensure as a chemical dependency recovery hospital, including medical, nursing, rehabilitative, pharmaceutical, dietary and support services.
CHEMICAL DEPENDENCY RECOVERY HOSPITAL. Chemical dependency recovery hospital means a health facility that provides 24-hour inpatient chemical dependency recovery services for persons who have a dependency on alcohol or other drugs, or both alcohol and other drugs.
HOSPITAL. Hospital, where used in this section, means a chemical dependency recovery hospital, unless noted otherwise as a general acute care hospital or acute psychiatric hospital.
1229.4 General construction. Chemical dependency recovery units provided in general acute care hospitals shall comply with the provi- sions under Section 1224.4, General Construction, and chemical dependency recovery units provided in acute psychiatric hospitals shall comply with the provisions under Section 1228.4, General Construction, where applicable. Chemical dependency recovery hospitals under H&SC Section 1250.3 shall comply with the following requirements:
1229.4.1 Reserved.
1229.4.2 Reserved.
1229.4.3 Reserved.
1229.4.4 Support areas for patients.
1229.4.4.1 Examination and treatment rooms.
1229.4.4.1.1 Examination room. Examination rooms in chemical dependency recovery units shall meet the requirements of Section 1224.4.4.1.1 as amended below:
1229.4.4.1.1.1 Location. Examination rooms shall be permitted to serve several chemical dependency units and shall be permitted to be on a different floor. 1229.4.4.1.1.2 Space requirements. Examination rooms shall have a minimum clear floor area of 80 square feet (11.15 m [2] ).
1229.4.4.1.2 Treatment room. Where provided, refer to Section 1224.4.4.1.2.
1229.4.5 Outpatient waiting rooms. Where provided, refer to Section 1224.4.5.
1229.4.6 Reserved.
1229.4.7 Corridors. Refer to Section 1224.4.7. Minimum width of corridors and hallways shall be 5 feet (1524 mm); refer to restrictions under Section 435.
Exceptions: 1. Chemical dependency recovery units provided as distinct part units of a General Acute-Care Hospital must provide a minimum width of 8 feet subject to exemptions under Section 1224.4.7. 2. Chemical dependency recovery units provided as distinct part units of an Acute Psychiatric Hospital must provide a mini- mum width of 6 feet subject to exemptions under Section 1224.4.7.
1229.4.8 Doors and door openings. Refer to Section 1224.4.8.
1229.4.9 Windows and screens.
1. A minimum net glazed area of not less than 8 percent of the floor area of each indoor activity space and dining space shall be provided.
CPC § 25.4 Medium relevance — show source text
6)|100|12|12|14|16|19|21|26|30|35|16|18|21|24|26|29|34|39|45| |ASTM D1863
(No. 6)|150|12|14|17|19|22|24|29|34|39|18|21|23|26|29|32|37|43|48| |For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s.
a. Parapet height is measured vertically from the top surface of the coping down to the surface of the roof covering in the field of the roof adjacent to the parapet and outbound
of any cant strip.
b. Interpolation shall be permitted for wind speed, mean roof height and parapet height. Extrapolation is not permitted.
c. Basic wind speed,V, and wind exposure shall be determined in accordance with Section 1609.
d. Where the minimum required parapet height is indicated to be 2 inches (51 mm), a gravel stop shall be permitted and shall extend not less than 2 inches (51 mm) from the roof
surface and not less than the height of the aggregate.
e. The tabulated values apply only to conditions where the topographic factor (Kzt) determined in accordance with Chapter 26 of ASCE 7 is 1.0 or where_Kzt_ is incorporated in the
basic wind speed in Section 1609.
f. For Exposure D, add 8 inches (203 mm) to the parapet height required for Exposure C and the parapet height shall not be less than 12 inches (305 mm).|For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s.
a. Parapet height is measured vertically from the top surface of the coping down to the surface of the roof covering in the field of the roof adjacent to the parapet and outbound
of any cant strip.
b. Interpolation shall be permitted for wind speed, mean roof height and parapet height. Extrapolation is not permitted.
c. Basic wind speed,V, and wind exposure shall be determined in accordance with Section 1609.
d. Where the minimum required parapet height is indicated to be 2 inches (51 mm), a gravel stop shall be permitted and shall extend not less than 2 inches (51 mm) from the roof
surface and not less than the height of the aggregate.
e. The tabulated values apply only to conditions where the topographic factor (Kzt) determined in accordance with Chapter 26 of ASCE 7 is 1.0 or where_Kzt_ is incorporated in the
basic wind speed in Section 1609.
f. For Exposure D, add 8 inches (203 mm) to the parapet height required for Exposure C and the parapet height shall not be less than 12 inches (305 mm).|For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s.
a. Parapet height is measured vertically from the top surface of the coping down to the surface of the roof covering in the field of the roof adjacent to the parapet and outbound
of any cant strip.
b. Interpolation shall be permitted for wind speed, mean roof height and parapet height.CPC § 317.2 Medium relevance — show source text
317.2 Scope. All alterations, structurally connected additions and/or repairs to existing structures or portions thereof shall, at a minimum, be designed and constructed to resist the effects of seismic ground motions as provided in this section. The structural system shall be evaluated by a registered design professional and, if not meeting or exceeding the minimum seismic design performance requirements of this section, shall be retrofitted in compliance with these requirements.
Exception: Those structures for which Section 317.3 determines that assessment is not required, or for which Section 317.4 determines that retrofit is not needed, then only the requirements of Section 317.11 apply.
317.3 Applicability.
317.3.1 Existing state-owned buildings. [BSC, DSA-SS] For existing state-owned structures including all buildings owned by the University of California and the California State University, the requirements of Section 317 apply whenever the structure is to be retrofitted, repaired or modified and any of the following apply: 1. Total construction cost, not including cost of furnishings, fixtures and equipment, or normal maintenance, for the building exceeds 25 percent of the construction cost for the replacement of the existing building. The changes are cumulative for past modifications to the building that occurred after adoption of the 1995 California Building Code and did not require seismic retrofit.
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PROVISIONS FOR ALL COMPLIANCE METHODS
2. There are changes in risk category. 3. The modification to the structural components increases the seismic forces in or strength requirements of any structural component of the existing structure by more than 10 percent cumulative since the original construction, unless the component has the capacity to resist the increased forces determined in accordance with Section 319. If the building’s seismic base shear capacity has been increased since the original construction, the percent change in base shear may be calculated relative to the increased value.
4. Structural elements need repair where the damage has reduced the lateral-load-resisting capacity of the structural system by more than 10 percent. 5. Changes in live or dead load increase story shear by more than 10 percent.
317.3.2 Public school buildings. [DSA-SS] For public schools, the provisions of Section 317 apply when required in accordance with Sections 4-307 and 4-309(c) of the California Administrative Code.
317.3.3 Community college buildings. [DSA-SS/CC] For community colleges, the provisions of Section 317 apply when required in accordance with Sections 4-307 and 4-309(c) of the California Administrative Code.
317.4 Evaluation required. If the criteria in Section 317.3 apply to the project under consideration, the design professional of record shall provide an evaluation in accordance with Section 317 to determine the seismic performance of the building in its current configuration and condition. If the structure's seismic performance as required by Section 317.5 is evaluated as satisfactory and the peer reviewer(s), when Method B of Section 321 is used, concur, then no structural retrofit is required.
_**317.5 Minimum seismic design performance levels for structural and nonstructural components.
CPC § 2.875 Medium relevance — show source text
Table 9 Data and Material Codes for PVC Swedge Reducers [1]
Reducer
Size
(inches)Dimensions (inches) Col3 Col4 Col5 Material
CodeReducer
Size
(inches)Minimum Length Minimum Length Typical Belled End ID Typical Belled End ID Typical Belled End ID Reducer
Size
(inches)A B C D D 3 x 2 2.875 1.750 3.515 2.393 018585 4 x 3 3.375 2.875 4.515 3.515 018584 5 x 4 4.000 3.375 5.593 4.515 360777 6 x 5 5.000 4.000 6.658 5.593 360778 1 � Both belled ends must be chamferred 0.3 inches (min) by 45 .
062288 Page 6 of 20 Rev. #20: 03−25−22
UG-1: Conduits Greenbook Underground Conduits
PVC and HDPE Conduit and Fittings (continue)
Table 10 High Density Polyethylene (HDPE) Conduit Directional
Figure 9 HDPE Conduit
Figure 10 PE Mechanical Coupling
Figure 11 PVC (Bore-Gard, Schedule 40
Table 10 High Density Polyethylene (HDPE) Condu Boring Conduit 1 Col2 Col3 Col4 uit Directional Col6 Conduit Conduit Conduit Conduit Mechanical
Couplings2, 3Mechanical
Couplings2, 3Size Length
(feet)Description Material
CodeSize
(inches)Material
Code2” Sch 80 500 Coil4 360511 2 360690 2” Sch 80 40 Stick 360017 360017 360017 3” Sch 80 500 Coil4 360644 3 360691 3” Sch 80 40 Stick 360018 360018 360018 4” Sch 80 625 Coil5 360014 4 360692 4” Sch 80 40 Stick 360015 360015 360015 5” SDR 13.5 450 Coil5 360012 5 360694 5” SDR 13.5 40 Stick 360013 360013 360013 6” SDR 13.5 450 Coil5 360010 6 360695 6” SDR 13.5 40 Stick 360011 360011 360011 1 Color must be black with at least 3 red longitudinal strips. 2 May be used to connect PE conduit to PVC conduit (except in directional drilling apps.) 3 Mechanical couplings are not designed for directional drilling. Fusion joints are required. 4 No reel. 5 With reel.
Table 11 PVC (Bore-Gard) Directional Boring Conduit
Frequently asked questions
Who is a Registered Design Professional (RDP) under the CPC?
An RDP is a licensed architect or engineer authorized by the state to prepare and seal design documents. The CPC requires RDP involvement when an engineered (alternative) design is submitted; the RDP must sign, seal and provide the technical substantiation specified in § 301.5.1–301.5.3.
Can a licensed plumbing contractor design a system instead of an RDP?
Yes in limited situations the CPC allows a licensed plumbing contractor to design certain systems (for example, tall wood building plumbing may be designed by a licensed plumbing contractor or RDP under § 301.6), but when the CPC or AHJ requires an engineered/alternative design, the RDP must sign and seal the documents.
Are recycled water systems always required to be designed by an RDP?
Not always — the CPC requires permit and complete plumbing plans for recycled water supply systems (§ 1505.2 / § 1505.2.1) and the AHJ determines whether the plans must be prepared/signed by an RDP based on system complexity and local policy.
What paperwork does the AHJ expect when an RDP designs an alternative engineered system?
The RDP must: note the alternative engineered design on the permit application; submit sufficient technical data; provide two sets of signed and sealed design documents (floor plans, riser diagrams, flow direction, pipe sizes, grades, etc.); and provide a testing/inspection plan — per § 301.5.1 – § 301.5.6.
Are emergency repairs exempt from permit and RDP requirements?
Emergency repairs may be performed under administrative provisions, but the AHJ typically requires the permit application and follow-up documentation within a short timeframe (see building administration excerpts on emergency repairs and permit timelines). Always confirm with the local AHJ.
More in California Plumbing Code
- Administration
- Definitions
- General Regulations
- Plumbing Fixtures and Fixture Fittings
- Water Heaters
- Water Supply and Distribution
- Sanitary Drainage (Drain, Waste, and Vent)
- Indirect Wastes
- Vents
- Traps and Interceptors
- Storm Drainage
- Fuel Gas Piping
- Health Care Facilities — Medical Gas and Medical Vacuum Systems
- Alternate Water Sources and Nonpotable Rainwater Catchment Systems
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