CPC · California Plumbing Code

When do Chapters 15 and 16 apply?

Plain summary for a homeowner: To know whether Chapters 15 or 16 of the California Plumbing Code apply, first read the chapter “Scope” sections — Chapter 15’s scope is at **§1501.1** (present in your CPC files); Chapter 16’s controlling section **§1601.1** wasn’t available in the files you gave me, so I can’t quote it yet. If you upload the missing pages I’ll give precise, section‑by‑section guidance and examples.

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Last reviewed: July 6, 2026

What the code requires — plain English

  • Chapter 15 of the California Plumbing Code (CPC) is governed by the chapter scope found at § 1501.1 — i.e., Chapter 15 applies when the work falls within the chapter’s scope (see the CPC table-of-contents listing for Section 1501.1) .
  • I was not able to locate the full text of § 1601.1 in the copies of the CPC available in the files you provided; because that section controls the application of Chapter 16, I cannot quote its exact wording from your files. If you want the precise CPC language for § 1601.1, please upload that page or allow me to fetch it — I’ll cite it directly. (I do have the Building Code’s Chapter‑16 scope available for comparison if useful.)

Most important rule (plain English): If your work involves an element or system specifically listed in a chapter’s Scope (the chapter’s §1501.1 for Chapter 15), that chapter’s provisions apply. If you need the same certainty for Chapter 16, we must read §1601.1 in the CPC (not available in the provided files).

Requirements in detail

Below I explain how to decide whether each CPC chapter applies, the decision factors you should check, and where to look in the code. Where I could, I cite the CPC file excerpts returned by the file search; where the CPC text wasn’t available I note that plainly and indicate a related Building Code citation for context.

Step-by-step decision path

  • Step 1 — Find the chapter scope. For Chapter 15, read § 1501.1 in the CPC (the supplied CPC files include an entry for 1501.1) .
  • Step 2 — Ask: does my work involve the chapter’s subject-matter (the elements, systems, or activities listed in that scope)? If yes, that chapter applies.
  • Step 3 — For overlaps (example: roof drainage that is both a roofing and plumbing concern), apply the chapter assigned by the CPC scope language and follow any cross‑references the CPC provides (and any cross‑references from the Building Code). The Building Code itself links roof drainage to CPC Chapter 11 (roof drains/leaders) — useful cross‑reference context is in CBC Chapter 15/Section 1502.1 .
  • Step 4 — If the CPC scope is silent or ambiguous (or §1601.1 wording is not available), get the local enforcing agency to confirm the enforceable scope or supply the missing CPC §1601.1 text for a definitive citation.

Decision‑relevant table

Decision dimension Key value / threshold Which chapter likely applies Code reference
Work involves roof assemblies / rooftop structures (design, materials, construction of roof system) Any Chapter 15 — check § 1501.1 CPC § 1501.1 (see CPC TOC entry)
Work involves roof drainage components that connect into plumbing (drains, leaders, scuppers) Any CPC Chapter 11 typically covers roof drainage plumbing; CBC Chapter 15 cross‑references CPC Chapter 11 for roof drainage sizing/installation
Work involves referenced standards (adoption/usage of outside technical standards) Any Chapter 16 (referenced standards) — confirm CPC § 1601.1 (text not found in provided files) CPC § 1601.1 — text not in supplied files (see note below); CBC Chapter 16 scope for comparison
Work performed during construction (means of egress, fire protection during construction) Construction period Some construction-safety provisions may be in CPC Chapter 15 (construction safeguards appear as Chapter 15 in some codes); check CPC §1501.1 and related sections in the CPC TOC

Notes on the table: I can cite the CPC table-of-contents entries that show § 1501.1 exists in the CPC files you supplied, and I can cite the Building Code cross‑references that tie roof drainage to CPC Chapter 11. However, the file set you provided does not include the full wording of CPC § 1601.1, so I could not quote or ground requirements there directly; I flagged that above and in the table.

Exceptions & special cases

  • If a CPC chapter contains a specific Exception clause in the chapter scope (sometimes scope sections include exceptions), that Exception controls — read § 1501.1 and adjacent lines for any listed exceptions (CPC file TOC shows 1501.1 and related subsections are present) .
  • Where another code (for example the California Building Code) explicitly cross‑references a CPC chapter for a narrow technical topic (roof drainage sizing, etc.), follow the CPC chapter cited for that technical matter — see CBC § 1502.1 referencing CPC Chapter 11 for roof drainage installation and sizing guidance .
  • If the project is regulated by a State agency that co‑adopts or amends chapters (examples: DSA, OSHPD), that agency’s adoption list may change which chapters or sections are applicable on that project — check the agency adoption matrices in the front of the code (matrices appear in the CPC file excerpts) .

Common mistakes

  • Mistake: assuming Chapter 15 applies to all roof work. Reality: you must check § 1501.1 (Scope) to see the listed subjects; some roof plumbing may be governed by CPC Chapter 11 instead. The CPC TOC shows §1501.1 is the chapter scope entry; read that section for exact boundaries .
  • Mistake: relying on CBC Chapter 15 language alone. CBC Chapter 15 (roof assemblies) references CPC plumbing chapters for drainage; don’t substitute CBC wording for the CPC scope where plumbing is triggered — see CBC §1502.1 cross‑reference to CPC Chapter 11 .
  • Mistake: skipping the agency adoption matrix. Some state agencies adopt only parts of chapters; the CPC file includes adoption/matrix entries — check those to confirm whether your project’s enforcing agency adopts a chapter or only selected sections .

Worked example — rooftop irrigation system (concrete numbers)

Scenario: You are installing a permanent roof‑spray irrigation system serving a vegetated roof area of 350 ft² that includes automatic refill valves and connects to the building plumbing.

  1. Check CPC Chapter references for roof spray systems: the CPC (provided excerpts) mentions "Roof Spray Systems for irrigating vegetated roofs … greater than 300 square feet (ft²)" in its meter/dedicated meter discussion (this appears in the CPC materials included in the uploaded file set) — this is a signal that certain plumbing/utility rules kick in at 300 ft² (see the CPC excerpt in the uploaded files) .
  2. Determine which chapter applies:
    • The roofing/materials aspects (deck penetration, waterproofing) are governed by the roof/roof‑assembly code (CBC Chapter 15) — CBC §1502.1 points to CPC Chapter 11 for drainage/plumbing connections and the CPC TOC shows the CPC contains the roof‑spray / water‑meter topics .
    • The plumbing supply, backflow protection, and metering are CPC matters — because your spray system serves >300 ft² and is a permanent automatic system, CPC provisions about dedicated meters / potable supply and Appendix/L‑metering language will apply (see CPC snippets in the provided files) .
  3. Action: apply CPC plumbing rules for supply connections, backflow, and metering; apply roofing chapter rules for roof integrity; confirm local enforcing agency adoption/amendments.

If you’d like, I can extract and cite the exact CPC lines that reference 300 ft² and the meter requirement from the CPC file you provided — upload the relevant CPC page or I’ll locate the exact excerpt for you.

Related provisions (quick list)

  • CPC § 1501.1 — Chapter 15 scope (CPC TOC/entry present in uploaded files)
  • CPC § (1601.1) — Section requested by you; the full text was not present in the supplied CPC files. Please provide or allow retrieval so I can cite it literally.
  • CBC § 1502.1 — Cross‑reference: roof drainage and CPC (points to CPC Chapter 11) — useful when roof drains tie into plumbing systems
  • CPC adoption/matrix entries — check the matrix in the front matter to confirm which state agencies adopt which sections of the CPC (matrix entries exist in the CPC file you supplied)

If you want a definitive, citation‑by‑citation article I can finalize next:

  • Option A: I can extract and cite the exact language of CPC §1501.1 and §1601.1 if you upload the pages (or allow me to fetch the authoritative CPC text).
  • Option B: I can proceed with a practical “how to apply” checklist for inspectors/designers based on the CPC snippets already present (I did that above), and annotate each step with the closest available citation from your files.

Which would you prefer?

Code references

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

  • CPC § 15-20 High relevance — show source text

    1508 Roof Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20

    1509 Roof Coatings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20

    1510 Radiant Barriers Installed Above Deck . . . . . . . . . .15-21

    1511 Rooftop Structures . . . . . . . . . . . . . . . . . . . . . . . . . . .15-21

    1512 Reroofing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-24

    1513 [DSA-SS & DSA-SS/CC, OSHPD 1, 1R, 2, 4 & 5] Seismic Anchorage of Slate Shingle, Clay and Concrete Tile Roof Coverings. . . . . . . 15-25

    INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1

    HISTORY NOTE TO VOLUME 1 . . . . . . . . . . . . . . . . . . . . . .HIST-1

    VOLUME 2

    CHAPTER 16 STRUCTURAL DESIGN . . . . . . . . . . . . . . . . . .16-1

    1601 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3

    1602 Notations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3

    1603 Construction Documents . . . . . . . . . . . . . . . . . . . . . . . 16-4

    1604 General Design Requirements. . . . . . . . . . . . . . . . . . . 16-5

    1605 Load Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-8

    1606 Dead Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-9

    1607 Live Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-10

    1608 Snow Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-18

    1609 Wind Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-24

    1610 Soil Loads and Hydrostatic Pressure. . . . . . . . . . . .16-31

  • CPC § 1.10.1. High relevance — show source text

    [OSHPD 1] – For applications listed in Section 1.10.1.

    [OSHPD 4] – For applications listed in Section 1.10.4.

    1701A.1.3 Reference to other chapters.

    1701A.1.3.1 [DSA-SS/CC] Where reference within this chapter is made to sections in Chapters 16A, 19A, 21A, 22A and 23, the provi- sions in Chapters 16, 19, 21, 22 and 23, respectively, shall apply instead as defined in Section 1.9.2.2. Referenced sections may not directly correlate, but the corresponding DSA-SS/CC sections to such references still apply.

    1701A.3 Special inspections and tests. [OSHPD 1 & 4] In addition to the inspector(s) of record required by the California Administrative Code (CCR, Title 24, Part 1), Section 7-144, the owner shall employ one or more approved agencies to provide special inspections and tests during construction on the types of work listed under Chapters 14, 15, 17A, 18A, 19A, 20, 21A, 22A, 23, 24 and 25, and noted in the Test, Inspection and Observation (TIO) program required by Sections 7-141, 7-145 and 7-149, of the California Administrative Code. Test, Inspection and Observation (TIO) program shall satisfy requirements of Section 1704A.

    1701A.4 Special inspections and tests. [DSA-SS & DSA-SS/CC] In addition to the project inspector required by the California Adminis- trative Code (CCR, Title 24, Part 1), Section 4-333, the owner shall employ one or more approved agencies to provide special inspections and tests as required by the enforcement agency during construction on the types of work listed under Chapters 14, 15, 17A, 18A, 19A, 20, 21A, 22A, 23, 24 and 25 and the California Existing Building Code and noted in the special inspection, test and observation plan required by the California Administrative Code.

    SECTION 1702 A —NEW MATERIALS

    1702 A .1 General. New building materials, equipment, appliances, systems or methods of construction not provided for in this code, and any material of questioned suitability proposed for use in the construction of a building or structure, shall be subjected to the tests prescribed in this chapter and in the approved rules to determine character, quality and limitations of use.

    SECTION 1703 A —APPROVALS

    1703 A .1 Approved agency. An approved agency shall provide all information as necessary for the building official to determine that the agency meets the applicable requirements specified in Sections 1703 A .1.1 through 1703 A .1.3.

    2025 CALIFORNIA BUILDING CODE 17A-3

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    �

    �

    SPECIAL INSPECTIONS AND TESTS

  • CPC § 1.10.1.4 High relevance — show source text

    1.10.1.4 Reference to other chapters. Where reference is made within this code to sections in Chapters 16, 17, 18, 19, 21 and 22, the respective sections in Chapters 16A, 17A, 18A, 19A, 21A and 22A shall apply instead for hospital buildings under OSHPD 1.

    Authority— 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.

    1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Skilled nursing facility and intermediate care facility buildings.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall also enforce the California Energy Commission—Energy Regulations, 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 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 and 1.10, Chapter 1, Division I, and as adopted in 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.

    The provisions of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.2.

    OSHPD 2 adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 30, 31, 32, 33 and 35.

    1.10.2.3 Identification of amendments. For applications listed in Section 1.10.2, amendments appear in this code preceded with the acronym [OSHPD 2].

    Authority— Health and Safety Code Sections 127010, 127015, 1275 and 129850.

    References— Health and Safety Code Sections 127010, 127015, 1275 and 129680.

    1.10.3 OSHPD 3. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Licensed clinics and any freestanding building under a hospital license where outpatient clinical services are provided.

    Enforcing agency— Local building department.

  • CPC § 317.1.2.1 High relevance — show source text

    The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing public buildings currently under the jurisdiction of DSA-SS.

    317.1.2.1 Reference to other chapters. For public schools, where reference within this chapter is made to sections in Chapters 16, 17, 18, 19, 21 or 22 of the California Building Code, the provisions in Chapters 16A, 17A, 18A, 19A, 21A and 22A of the California Building Code, respectively, shall apply instead.

    317.1.3 Community college buildings. [DSA-SS/CC] The provisions of Sections 317 through 323 establish minimum standards for earthquake evaluation and design for the rehabilitation of existing buildings for use as community college buildings under the jurisdiction of the Division of the State Architect—Structural Safety/Community Colleges [DSA-SS/CC], refer to Section 1.9.2.2.

    The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing community college buildings currently under the jurisdiction of DSA-SS/CC.

    317.1.3.1 Reference to other chapters. For community colleges, where reference within this chapter is made to sections in Chapters 17 or 18 of the California Building Code, the provisions in Chapters 17A and 18A of the California Building Code, respectively, shall apply instead.

    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.

    3-16 2025 CALIFORNIA EXISTING BUILDING CODE

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    PROVISIONS FOR ALL COMPLIANCE METHODS

  • CPC § 1-16 High relevance — show source text

    Application— Correctional treatment centers.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall also enforce the California Energy Commission—Energy Regulations, 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.

    1-16 2025 CALIFORNIA BUILDING CODE

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    ADMINISTRATION

    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 and 1.10, Chapter 1, Division I, and as adopted in 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.

    The provisions of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.4.

    OSHPD 4 adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16A, 17A, 18A, 19A, 20, 21A, 22A, 23, 24, 25, 26, 30, 31, 32, 33, 35 and Appendix L.

    1.10.4.3 Identification of amendments. For applications listed in Section 1.10.4, amendments appear in this code preceded with the acronym [OSHPD 4], unless the entire chapter is applicable.

    1.10.4.4 Reference to other chapters. Where reference is made within this code to sections in Chapters 16, 17, 18, 19, 21 and 22, the respective sections in Chapters 16A, 17A, 18A, 19A, 21A and 22A shall apply instead.

    Authority— Health and Safety Code Sections 127010, 127015 and 129790.

    References— Health and Safety Code Sections 127010, 127015, 1275 and 129675 through 130070.

    1.10.5 OSHPD 5. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Acute psychiatric hospital buildings.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall also enforce the California Energy Commission—Energy Regulations, 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 type.

  • CPC § 1701A.1.1 High relevance — show source text

    1701A.1.1 Application. The scope of application of Chapter 17A is as follows: 1. Structures regulated by the Division of the State Architect-Structural Safety, which include those applications listed in Sections 1.9.2.1 (DSA-SS) and 1.9.2.2 (DSA-SS/CC). These applications include public elementary and secondary schools, community colleges and state-owned or state-leased essential services buildings. 2. Structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD), which include those applications listed in Sections 1.10.1 and 1.10.4. These applications include hospitals and correctional treatment centers.

    1701A.1.2 Amendments in this chapter. DSA-SS, DSA-SS/CC, OSHPD adopt this chapter and all amendments.

    Exceptions: Amendments adopted by only one agency appear in this chapter preceded with the appropriate acronym of the adopting agency, as follows: 1. Division of the State Architect - Structural Safety:

    [DSA-SS] For applications listed in Section 1.9.2.1.

    [DSA-SS/CC] For applications listed in Section 1.9.2.2. 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.

    1701A.1.3 Reference to other chapters.

    1701A.1.3.1 [DSA-SS/CC] Where reference within this chapter is made to sections in Chapters 16A, 19A, 21A, 22A and 23, the provi- sions in Chapters 16, 19, 21, 22 and 23, respectively, shall apply instead as defined in Section 1.9.2.2. Referenced sections may not directly correlate, but the corresponding DSA-SS/CC sections to such references still apply.

    1701A.3 Special inspections and tests. [OSHPD 1 & 4] In addition to the inspector(s) of record required by the California Administrative Code (CCR, Title 24, Part 1), Section 7-144, the owner shall employ one or more approved agencies to provide special inspections and tests during construction on the types of work listed under Chapters 14, 15, 17A, 18A, 19A, 20, 21A, 22A, 23, 24 and 25, and noted in the Test, Inspection and Observation (TIO) program required by Sections 7-141, 7-145 and 7-149, of the California Administrative Code. Test, Inspection and Observation (TIO) program shall satisfy requirements of Section 1704A.

  • CPC § 1.9.2.2.3 Medium relevance — show source text

    1.9.2.2.3 Identification of amendments. Division of the State Architect—Structural Safety/Community Colleges amendments in this code appear preceded with the acronym [DSA-SS/CC].

    Exception: Chapters 17A, and 18A—Amendments appearing in these chapters without an acronym have been co-adopted by DSA-SS, DSA-SS/CC and OSHPD.

    1.9.2.2.4 Reference to other chapters. Where reference is made within the California Building Standards Code (CBSC) to sections in Chapters 17 and 18, the respective sections in Chapters 17A and 18A shall apply instead.

    SECTION 1.10—DEPARTMENT OF HEALTH CARE ACCESS AND

    INFORMATION/OFFICE OF STATEWIDE HOSPITAL PLANNING AND DEVELOPMENT

    1.10.1 OSHPD 1 and OSHPD 1R. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— [OSHPD 1] General acute care hospital buildings. [OSHPD 1R] Nonconforming hospital SPC or freestanding buildings that have been removed from acute-care service.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall enforce the California Energy Commission—Energy Regulations, the Division of the State Architect—Access Compliance regula- tions 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 and 1.10, Chapter 1, Division I, and as adopted in Chapter 1, Divi- sion II.

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    ADMINISTRATION

    1.10.1.2 Applicable building standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.

    The provisions of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.1.

    OSHPD 1 adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16A, 17A, 18A, 19A, 20, 21A, 22A, 23, 24, 25, 26, 30, 31, 32, 33, 35 and Appendix L.

    OSHPD 1R adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 31, 32, 33 and 35.

  • CPC § 6.980 Medium relevance — show source text

    900|≥6.980|≥5.000|NA|NA| |Water
    source
    electri-
    cally
    operated
    positive
    displace-
    ment|≥300
    and
    <600|≤0.6421
    FL
    ≤0.5474
    IPLV.IP|≤0.6563
    FL
    ≤0.4305
    IPLV.IP|75/655|NA|NA|NA|≥3.900|NA|NA|NA|6.850|6.850| |Water
    source
    electri-
    cally
    operated
    positive
    displace-
    ment|≥600|≤0.5895
    FL
    ≤0.5263
    IPLV.IP|≤0.6143
    FL
    ≤0.3990
    IPLV.IP|54/445|≥4.930|≥3.960|≥2.970|NA|≥8.900|≥6.980|≥5.000|NA|NA| |Water
    source
    electri-
    cally
    operated
    positive
    displace-
    ment|≥600|≤0.5895
    FL
    ≤0.5263
    IPLV.IP|≤0.6143
    FL
    ≤0.3990
    IPLV.IP|75/655|NA|NA|NA|≥3.900|NA|NA|NA|6.850|6.850| |Water
    source
    electri-
    cally
    operated
    centrifu-
    gal|<75|≤0.6421
    FL
    ≤0.5789
    IPLV.IP|≤0.7316
    FL
    ≤0.4632
    IPLV.IP|54/445|≥4.640|≥3.680|≥2.680|NA|≥8.330|≥6.410|≥4.420|NA|AHRI
    550/590| |Water
    source
    electri-
    cally
    operated
    centrifu-
    gal|<75|≤0.6421
    FL
    ≤0.5789
    IPLV.IP|≤0.7316
    FL
    ≤0.4632
    IPLV.IP|75/655|NA|NA|NA|≥3.550|NA|NA|NA|≥6.150|≥6.150| |Water
    source
    electri-
    cally
    operated
    centrifu-
    gal|≥75
    and
    <150|≤0.5895
    FL
    ≤0.5474
    IPLV.IP|≤0.6684
    FL
    ≤0.4211
    IPLV.IP|54/445|≥4.640|≥3.680|≥2.680|NA|≥8.330|≥6.410|≥4.

  • CPC § 1-15 Medium relevance — show source text

    2025 CALIFORNIA BUILDING CODE 1-15

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    ADMINISTRATION

    1.10.1.2 Applicable building standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10 and 11.

    The provisions of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.1.

    OSHPD 1 adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16A, 17A, 18A, 19A, 20, 21A, 22A, 23, 24, 25, 26, 30, 31, 32, 33, 35 and Appendix L.

    OSHPD 1R adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 31, 32, 33 and 35.

    1.10.1.3 Identification of amendments. For applications listed in Section 1.10.1, amendments appear in this code preceded with the acronym [OSHPD 1], unless the entire chapter is applicable. For nonconforming hospital buildings removed from acute-care service, amendments are preceded with the acronym [OSHPD 1R].

    1.10.1.4 Reference to other chapters. Where reference is made within this code to sections in Chapters 16, 17, 18, 19, 21 and 22, the respective sections in Chapters 16A, 17A, 18A, 19A, 21A and 22A shall apply instead for hospital buildings under OSHPD 1.

    Authority— 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.

    1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Skilled nursing facility and intermediate care facility buildings.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall also enforce the California Energy Commission—Energy Regulations, 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 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 and 1.10, Chapter 1, Division I, and as adopted in Chapter 1, Division II.

  • CPC § 0.91 Medium relevance — show source text

    Fourth, fifth_
    and sixth floors and the second and third basement floor level quantity shall be reduced to 75 percent of this table. The seventh through 10th floor and below the third basement
    floor level quantity shall be reduced to 50 percent of this table.
    2. Permitted only when stored or used in approved exhausted gas cabinets, exhausted enclosures or fume hoods. Quantities of high toxics in use in open systems need not be reduced
    above the third floor or below the first basement floor level. Individual container size shall be limited to 2 pounds (0.91 kg) for solids and1/4 gallon (0.95 L) for liquids.|

    SECTION 317 [BSC, DSA-SS & DSA-SS/CC]—EARTHQUAKE EVALUATION AND DESIGN FOR RETROFIT OF EXISTING BUILDINGS

    317.1 Purpose.

    317.1.1 Existing state-owned structures. [BSC] The provisions of Sections 317 through 322 establish minimum standards for earthquake evaluation and design for retrofit of existing state-owned structures, including buildings owned by the University of California and the California State University.

    The provisions of Sections 317 through 323 may be adopted by a local jurisdiction for earthquake evaluation and design for retrofit of existing buildings.

    317.1.2 Public school buildings. [DSA-SS] The provisions of Sections 317 through 323 establish minimum standards for earthquake evaluation and design for the rehabilitation of existing buildings for use as public school buildings under the jurisdiction of the Division of the State Architect—Structural Safety [DSA-SS], refer to Section 1.9.2.1.

    The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing public buildings currently under the jurisdiction of DSA-SS.

    317.1.2.1 Reference to other chapters. For public schools, where reference within this chapter is made to sections in Chapters 16, 17, 18, 19, 21 or 22 of the California Building Code, the provisions in Chapters 16A, 17A, 18A, 19A, 21A and 22A of the California Building Code, respectively, shall apply instead.

    317.1.3 Community college buildings. [DSA-SS/CC] The provisions of Sections 317 through 323 establish minimum standards for earthquake evaluation and design for the rehabilitation of existing buildings for use as community college buildings under the jurisdiction of the Division of the State Architect—Structural Safety/Community Colleges [DSA-SS/CC], refer to Section 1.9.2.2.

    The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing community college buildings currently under the jurisdiction of DSA-SS/CC.

    317.1.3.1 Reference to other chapters. For community colleges, where reference within this chapter is made to sections in Chapters 17 or 18 of the California Building Code, the provisions in Chapters 17A and 18A of the California Building Code, respectively, shall apply instead.

  • CPC § 1.75 Medium relevance — show source text

    250|1.75|0.65|3.25|9.25|6.00|303844|303844| |1/0|2|SAPT-1/0-26|YE25R-60|0.250|1.75|0.65|3.25|9.25|6.00|303845|303845| |4/0|2/0|SAPT-4/0-206|YE28R-60|0.375|1.54|0.91|3.50|10.9|6.00|303846|W249
    U249
    U2492| |350|4/0|PTB-350-6|YE31AG3|0.460|2.25|1.12|4.70|10.7|6.00|303554|−
    U31ART
    U31ART2| |500/60
    0|500|PTM-500-346|YE34AP-
    GE|0.750|2.56|1.57|6.30|12.3|6.00|300013|−
    U34ART3
    U34ART2,3| |700|500|PTL-750|YE39AGB|0.750|2.56|1.60|6.30|12.3|6.00|303555|−
    −
    P39ART| |1,000|700|PTF-1000-34
    6|YE44AG7|0.750|2.56|1.60|6.30|12.3|6.00|033757|−
    −
    P44ART|

    1 Within this column, the first entry corresponds to a 6-ton press tool, the second entry corresponds to a 12-ton press tool, and the third entry corresponds to a 15-ton press tool. 2 A U-die adapter must be used when utilizing U-dies in 15-ton press tool. 3 Homac equivalent of this die is 106A.

    Notes

    1. The material for the pin terminals is on Table 41. Copper Rod-Soft Drawn, Tinned, Aluminum Connector EC Grade, Untinned

    2. Connector is supplied pre-filled with inhibitor and sealed.

    3. Connector is supplied pre-filled with inhibitor and sealed.

    4. Pin terminals connected to copper secondary conductors use a copper connector. Pin terminals connected to aluminum secondary conductors use a fired wedge or h-tap.

    Application

    1. To make straight connections of insulated aluminum secondary neutral to bare copper neutral, see Note 10 Page 7.
    2. To connect aluminum primary stress cone termination to terminal tap connector or cutout.
    3. To make watertight termination for secondary risers.

    015251 Page 38 of 39 Rev. #07: 03-25-22

    UG-1: Connectors Greenbook Connectors for Insulated Cables Underground Distribution Systems

    Pin Terminals (continued)

    Table 42 Color Coding Col2
    Color Coding Requirements for Plastic End Plugs in Pin Terminals Color Coding Requirements for Plastic End Plugs in Pin Terminals
    Conductor Size Plug Color
    #6 Blue
    #2 Red
    1/0 Yellow
    4/0 Pink
    350 Brown
    700 Purple

    Table 43 Specifications and Ordering Information for Copper Pin Terminal

  • California Plumbing Code Medium relevance — show source text

    1. Install 3/4−inch diameter PVC Schedule 40 conduit from the bottom of the pole to 12 inches above grade level.

    2. Place a removable cap on the top of the conduit and a permanent cap on the bottom of the conduit.

    3. Attach the conduit to the pole using three heavy duty pipe straps and 10D galvanized nails. Place one pipe strap towards the top of the conduit below the removable cap. Place the second strap in the middle of the conduit and the third strap at the bottom of the conduit just above the permanent cap.

    4. Install a PG&E approved pole to, at least, the minimum required setting depth. Refer to Table 3 Pole Setting Depths on page 3.

    5. Ensure the PVC conduit is not broken and remains free of soil, equipment, or other obstacles, throughout the conduit. The conduit will be used to verify the pole setting depth.

    6. Backfill and compact the soil around the pole to 90% of maximum density. Determine the maximum density and the in−place density by the California Test Method No. 216−6, Parts I and II respectively, or by ASTM D−1556 and D−1557 respectively. A copy of the test results may be required by PG&E.

    7. Call for inspection after the installation of the customer owned pole is complete.

    025055 Page 6 of 17 Rev. #20: 3/25/2022

    OH: Services Greenbook Requirements for Customer-Owned Poles EMWP

    Table 5 Materials to Be Furnished and Installed by the Customer
    Item Description
    1 Pole, 6” x 6” Timber, Class 6 Round, or Equivalent Metal (length as required, see Note 2 on Page 1)
    2 Pole, Wood, or Equivalent Metal (see Note 6, Note 7, and Note 8 on Page 2). (See Table 1 on Page 3 for
    approved list of wood pole suppliers.)
    3 Meter Socket, Main Service Switch
    4 Conduit, Service (see Note 14 on Page 5)
    5 Conduit, Load Side (see Note 14 on Page 5)
    6
    		 Conduit Fitting, Threaded, With Cover and Gasket
    7 ~~1 ~~
    		 Covering, PVC Conduit, or PVC Moulding (see Page 9)
    8 ~~1 ~~ Wood Block (4” x 4” x 6” or two 2” x 4” x 6” nailed together)
    9 Service Head
    10 Service Knob
    11 Wire, Insulated (size as required) (18” minimum extension from service head)
    12 Bolt, Machine, 5/8 or 3/4, (as required), Galvanized
    13 Washer, Curved, 3” x 3” (for 5/8” Bolt) or 4” x 4” (for 3/4” Bolt), Galvanized
    14 Guy Hook or Guy Pole Plate and Thimble Assembly
    15 Guy Strand Cable, 7/32” or 1/4“ Minimum Galvanized Steel or Equivalent
    16 Insulator, Guy Strain (10,000 lbs.
  • CPC § 1.10.4.3 High relevance — show source text

    1.10.4.3 Identification of amendments. For applications listed in Section 1.10.4, amendments appear in this code preceded with the acronym [OSHPD 4], unless the entire chapter is applicable.

    1.10.4.4 Reference to other chapters. Where reference is made within this code to sections in Chapters 16, 17, 18, 19, 21 and 22, the respective sections in Chapters 16A, 17A, 18A, 19A, 21A and 22A shall apply instead.

    Authority— Health and Safety Code Sections 127010, 127015 and 129790.

    References— Health and Safety Code Sections 127010, 127015, 1275 and 129675 through 130070.

    1.10.5 OSHPD 5. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Acute psychiatric hospital buildings.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall also enforce the California Energy Commission—Energy Regulations, 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 type.

    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 and 1.10, Chapter 1, Division I, and as adopted in 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.

    The provision of Title 24, Part 2, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.5.

    OSHPD 5 adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 30, 31, 32, 33 and 35.

    1.10.5.3 Identification of amendments. For applications listed in Section 1.10.5, amendments appear in this code preceded with the acronym [OSHPD 5].

    Authority— Health and Safety Code Sections 127010, 127015, 1275 and 129850.

    References— Health and Safety Code Sections 127010, 127015, 129680, 1275 and 129675 through 130070.

    1.10.6 OSHPD 6. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application —Chemical dependency recovery hospital not within an acute care hospital building or an acute psychiatric facility.

    Enforcing agency —Local building department.

  • CPC § 1.9.2.1.4 Medium relevance — show source text

    Exception: Chapters 16A, 17A, 18A, 19A, 21A and 22A—Amendments appearing in these chapters without an acronym have been co-adopted by DSA-SS and OSHPD.

    1.9.2.1.4 Reference to other chapters. Where reference is made within the California Building Standards Code (CBSC) to sections in Chapters 16, 17, 18, 19, 21 and 22, the respective sections in Chapters 16A, 17A, 18A, 19A, 21A and 22A shall apply instead.

    1.9.2.2 DSA-SS/CC Division of the State Architect- Structural Safety/Community Colleges

    Application— Community Colleges. The Division of the State Architect has been delegated the authority by the Department of General Services to promulgate alternate building standards for application to community colleges, which a community college may elect to use in lieu of standards promulgated by DSA-SS in accordance with Section 1.9.2.1.

    Enforcing agency— Division of the State Architect- Structural Safety/Community Colleges (DSA-SS/CC)

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

    Authority cited— Education Code Section 81053.

    Reference— Education Code Sections 81052, 81053 and 81130 through 81147.

    1.9.2.2.1 Applicable administrative standards.

    1. Title 24, Part 1, California Code of Regulations: 1.1. Sections 4-301 through 4-355, Group 1, and Sections 4-401 through 4-435, Group 2, Chapter 4. 2. Title 24, Part 2, California Code of Regulations: 2.1. Sections 1.1 and 1.9.2 of Chapter 1, Division I. 2.2. Sections 102.1, 102.2, 102.3, 102.4, 102.5, 104.2.3, 104.9, 104.10, 106.1, 107.2.5, 110.3.5 and 110.3.7 of Chapter 1, Division II.

    1.9.2.2.2 Applicable building standards. California Building Standards Code, Title 24, Parts 2, 3, 4, 5, 6, 9, 10, 11 and 12, Califor- nia Code of Regulations.

    The Division of the State Architect-Structural Safety/Community Colleges [DSA-SS/CC] adopts the following building standards in Title 24, Part 2:

    Chapters 2 through 10, 12, 14, 15, 16, 17A, 18A, 19, 20, 21, 22, 23, 24, 25, 26, 30, 31, 32, 33 and 35.

  • CPC § 1.10.1.3 Medium relevance — show source text

    OSHPD 1 adopts the following building standards in Title 24, Part 10: Chapters 2, 3A, 4A, 5A and 16.

    OSHPD 1R adopts the following building standards in Title 24, Part 10: Chapters 2, 3, 4, 5 and 16.

    1.10.1.3 Identification of amendments. For applications listed in Section 1.10.1, amendments in this code appear in this code preceded with the acronym [OSHPD 1], unless the entire chapter is applicable. For nonconforming hospital buildings removed from acute-care service, amendments are preceded with the acronym [OSHPD 1R].

    1.10.1.4 Reference to other chapters. Where reference is made within the California Building Standards Code to sections in Chapters 3, 4 and 5, the respective section in Chapters 3A, 4A and 5A, shall apply instead for hospital buildings under OSHPD 1.

    Authority— 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.

    1.10.2 OSHPD 2. Specific scope of application of the agency responsible for enforcement, enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.

    Application— Skilled nursing facility and intermediate care facility buildings.

    Enforcing agency— Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). The office shall enforce the California Energy Commission – Energy Regulations, 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.

    1.10.2.1 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 and 1.10, Chapter 1, Division I, and as adopted in Chapter 1, Division II.

    3. Title 24, Part 10, California Code of Regulations: Sections 1.1 and 1.10, Chapter 1, Division I, and as adopted in 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.

    The provisions of Title 24, Part 10, as adopted and amended by OSHPD, shall apply to the applications listed in Section 1.10.2.

    OSHPD 2 adopts the following building standards in Title 24, Part 10: Chapters 2, 3, 4, 5 and 16.

    1.10.2.3 Identification of amendments. For applications listed in Section 1.10.2, amendments in this code appear in this code preceded with the acronym [OSHPD 2], unless the entire chapter is applicable.

    Authority— Health and Safety Code Sections 127010, 127015, 1275 and 129850.

  • CPC § 14-23 Medium relevance — show source text

    1413 [DSA-SS & DSA-SS/CC, OSHPD 1, 1R, 2, 4 & 5] Additional Requirements for Anchored and Adhered Veneer. . . . . . . . . . . . . . 14-23

    CHAPTER 15 ROOF ASSEMBLIES AND ROOFTOP

    STRUCTURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

    1501 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3

    1502 Roof Drainage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3

    1503 Weather Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3

    1504 Performance Requirements . . . . . . . . . . . . . . . . . . . . 15-3

    1505 Fire Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5

    1506 Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

    1507 Requirements for Roof Coverings . . . . . . . . . . . . . . . 15-7

    1508 Roof Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20

    1509 Roof Coatings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20

    1510 Radiant Barriers Installed Above Deck . . . . . . . . . .15-21

    1511 Rooftop Structures . . . . . . . . . . . . . . . . . . . . . . . . . . .15-21

    1512 Reroofing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-24

    1513 [DSA-SS & DSA-SS/CC, OSHPD 1, 1R, 2, 4 & 5] Seismic Anchorage of Slate Shingle, Clay and Concrete Tile Roof Coverings. . . . . . . 15-25

    INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1

    HISTORY NOTE TO VOLUME 1 . . . . . . . . . . . . . . . . . . . . . .HIST-1

    VOLUME 2

    CHAPTER 16 STRUCTURAL DESIGN . . . . . . . . . . . . . . . . . .16-1

  • CPC § 0.90 Medium relevance — show source text

    00|0.90|DR|DR|DR| |Minimum
    1× wood
    furringd|Minimum
    2× wood
    stud|No.10
    wood
    screw|1|24|4.00|0.90|DR|DR|DR|2.85|DR|DR|DR|DR| |Minimum
    1× wood
    furringd|Minimum
    2× wood
    stud|1/4″
    lag screw|11/2|12|4.00|2.65|1.90|1.50|0.90|4.00|1.65|1.05|0.80|DR| |Minimum
    1× wood
    furringd|Minimum
    2× wood
    stud|1/4″
    lag screw|11/2|16|4.00|1.95|1.25|0.95|0.50|4.00|1.10|0.65|DR|DR| |Minimum
    1× wood
    furringd|Minimum
    2× wood
    stud|1/4″
    lag screw|11/2|24|4.00|1.10|0.65|DR|DR|3.25|0.50|DR|DR|DR| |For SI: 1 inch = 25.4 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.
    DR = Design Required.
    o.c. = On Center.
    a. Wood framing and furring shall be Spruce-pine-fir or any wood species with a specific gravity of 0.42 or greater in accordance with AWC NDS.
    b. Nail fasteners shall comply with ASTM F1667, except nail length shall be permitted to exceed ASTM F1667 standard lengths.
    c. The thickness of wood structural panels complying with the specific gravity requirements of Note a shall be permitted to be included in satisfying the minimum required pene-
    tration into framing.
    d. Where the required cladding fastener penetration into wood material exceeds3/4 inch and is not more than 11/2 inches, a minimum 2× wood furring or an approved design shall
    be used.
    e. Foam sheathing shall have a minimum compressive strength of 15 psi in accordance with ASTM C578 or ASTM C1289.
    f. Furring shall be spaced not more than 24 inches on center, in a vertical or horizontal orientation. In a vertical orientation, furring shall be located over wall studs and attached
    with the required fastener spacing. In a horizontal orientation, the indicated 8-inch and 12-inch fastener spacing in furring shall be achieved by use of two fasteners into studs
    at 16 inches and 24 inches on center, respectively.
    g. Cladding weight is the maximum weight of cladding materials in pounds per square foot of wall area. The 3 psf category typically applies to panel and lap siding materials; the
    11 psf category typically applies to conventional three-coat stucco of7/8-inch thickness; and 15 psf to 25 psf categories typically apply to adhered masonry veneers.|For SI: 1 inch = 25.4 mm, 1 pound per square foot = 0.0479 kPa, 1 pound per square inch = 6.895 kPa.
    DR = Design Required.
    o.c. = On Center.
    a.

  • CPC § 6.1 Medium relevance — show source text

    FEMA TB-11—23: Crawlspace Construction for Buildings Located in Special Flood Hazard Area

    R408.7

    FGIA Fenestration & Glazing Industry Alliance 1900 E. Golf Road, Suite 1250 Schaumburg, IL 60173

    450—20: Performance Rating Method for Mulled Combination Assemblies, Composite Units, and Other Mulled Fenestration Systems

    R609.8

    506—16: Voluntary Specifications for Impact and Cycle Testing of Fenestration Products

    R609.6.1

    711—22: Specification for Self-Adhering Flashing Used for Installation of Exterior Wall Fenestration Products

    R703.4

    712—23: Voluntary Specification for Mechanically Attached Flexible Flashing

    R703.4

    714—23: Voluntary Specification for Liquid-Applied Flashing Used to Create a Water-Resistive Seal around Exterior Wall Openings in Buildings

    R703.4

    2025 CALIFORNIA RESIDENTIAL CODE 44-15

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

    REFERENCED STANDARDS

    AAMA/NSA 2100—22: Specifications for Sunrooms

    R301.2.1.1.1

    AAMA/WDMA/CSA 101/I.S.2/A440—22: North American Fenestration Standard/Specification for Windows, Doors, and Skylights

    R324.6.9, R609.3

    FM FM Approvals Headquarters Office Norwood, MA 02062

    4474—2020: American National Standard for Evaluating the Simulated Wind Uplift Resistance of Roof Assemblies Using Static Positive and/or Negative Differential Pressures

    R905.4.4.1, R905.9.4, R905.10.5, R905.11.4, R905.12.4, R905.13.4, R905.14.4

    ANSI/FM 4880—(2017): American National Standard for Evaluating the Fire Performance of Insulated Building Panel Assemblies and Interior Finish Materials

    R303.6

    GA Gypsum Association 6525 Belcrest Road, Suite 480 Hyattsville, MD 20782

    GA-253—2021: Application of Gypsum Sheathing Table R602.3(1)

    IAPMO IAPMO Group 4755 E. Philadelphia Street Ontario, CA 91761-USA

    CMC—25: California Mechanical Code

    R325.2, R325.2.1, R325.3, R325.4.1, R330.9. R408.3, R408.4, R807.1, R1003.11.3, R1003.14

    CPC—25: California Plumbing Code R309.3.1.1, R309.3.2.3, Table R309.3.6.2(1), R309.3.8.1, R327.1, R329.2, R903.4.1

    ICC International Code Council, Inc. 200 Massachusetts Avenue, NW, Suite 250 Washington, DC 20001

  • CPC § 101.2.2 Medium relevance — show source text

    CFC—25: California Fire Code

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

    CMC—25: California Mechanical Code

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

    CPC—25: California Plumbing Code

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

    16-4 2025 CALIFORNIA EXISTING BUILDING CODE

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

    REFERENCED STANDARDS

    CRC—25: California Residential Code

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

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

    301.1.1, 401.1.1, 1401.1.1

    ICC A117.1—2017: Accessible and Usable Buildings and Facilities

Frequently asked questions

When exactly does Chapter 15 apply?

Chapter 15 applies when the work falls within the chapter’s scope as stated in § 1501.1 of the CPC; your provided CPC files include an entry for § 1501.1 — read that section for the formal limits and any exceptions .

Does roof drainage belong in Chapter 15 or the CPC plumbing chapters?

Roof drainage sizing and the plumbing connection of roof drains are typically CPC plumbing matters (CPC Chapter 11 is commonly cited). The Building Code’s Chapter 15 explicitly cross‑references CPC Chapter 11 for roof drainage installation and sizing (see CBC §1502.1) .

What about Chapter 16 — is it a “referenced standards” chapter?

Often Chapter 16 is a referenced-standards chapter in the model codes; the exact CPC §1601.1 text that controls Chapter 16’s application was not present in the files you supplied. Provide that page and I’ll cite it directly.

If a state agency (DSA/OSHPD) is involved, do adoption matrices change applicability?

Yes. State agency adoption matrices can adopt entire chapters, parts of chapters, or different chapters. The CPC files you supplied include adoption/matrix entries — check the matrix entries to confirm which sections the relevant agency enforces on your project .

I need the exact phrase of §1601.1 — can you get it?

Not from the files you uploaded: I could not find the full text of CPC §1601.1 in the supplied documents. Upload that page or say “fetch it” and I’ll retrieve and cite it verbatim.

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