CPC · California Plumbing Code
Definitions
Chapter 2 (Sections 201–202) of the California Plumbing Code provides the interpretive rules and the alphabetic list of defined terms that control how the rest of the CPC is read and enforced.
Last reviewed: July 6, 2026
Overview
Chapter 2 of the California Plumbing Code (CPC) collects the code’s defined terms and the rules for how those terms are read and applied. Those definitions are the controlling dictionary for the rest of the CPC — they shape scope, clarify technical terms (for materials, fixtures, systems and occupancies), and resolve ambiguities that arise in enforcement and design. The CPC is organized with Chapter 2 as the Definitions chapter alongside the usual administrative and technical chapters of the code .
Two sections are particularly central: §201 (General), which sets the scope and interpretive rules (interchangeability of tense/gender, cross‑references to other codes, and the fallback for undefined terms), and §202, which lists the general definitions used through the plumbing code. These sections provide the baseline language the CPC uses when it says—for example—what “approved,” “fixture unit,” or “building drain” mean for regulatory purposes . Because Chapter 2 definitions are used across California’s building-related codes, practitioners frequently consult §201–§202 to confirm whether a term is defined locally in the CPC or adopted by reference from a companion code .
In this section
Code references
Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:
CPC § 705.1.2 Medium relevance — show source text
705.1.2 Solvent Cement Joints. Solvent cement joints for ABS pipe and fittings shall be clean from dirt and moisture. Pipe shall be cut square and shall be deburred. Where surfaces to be joined are cleaned, and free of dirt, moisture, oil, and other foreign material, the solvent cement that complies with ASTM D2235 shall be applied to all joint surfaces. Joints shall be made while both the inside socket surface and outside surface of pipe are wet with solvent cement. Hold joint in place and undisturbed for 1 minute after assembly. [HCD 1 & HCD 2] Plastic pipe and fittings joined with solvent cement shall utilize Low VOC primer(s), if a primer is required, and Low VOC cement(s) as defined in Section 214.0.
705.1.3 Threaded Joints. Threads shall comply with ASME B1.20.1. A minimum of Schedule 80 shall be permitted to be threaded. Molded threads on adapter fittings for the transition to threaded joints shall be permitted. Thread sealant compound shall be applied to male threads, insoluble in water, and nontoxic. The joint between the pipe and transition fitting shall be of the solvent cement type. Caution shall be used during assembly to prevent over tightening of the ABS components once the thread sealant compound has been applied. 705.2 Cast-Iron Pipe and Joints. Joining methods for cast-iron pipe and fittings shall be installed in accordance with the manufacturer’s installation instructions and shall comply with Section 705.2.1 or Section 705.2.2. 705.2.1 Caulked Joints. Caulked joints shall be firmly packed with oakum or hemp and filled with molten lead to a depth of not less than 1 inch (25.4 mm) in one continuous pour. The lead shall be caulked thoroughly at the inside and outside edges of the joint. After caulking, the finished joint shall not exceed [1] ⁄ 8 of an inch (3.2 mm) below the rim of the hub. No paint, varnish, or other coatings shall be permitted on the joining material until after the joint has been tested and approved.
705.2.2 Mechanical Joints and Compression Joints. Mechanical joints for cast-iron pipe and fittings shall be of the elastomeric compression type or mechanical joint couplings. Compression type joints with an elastomeric gasket for cast-iron hub and spigot pipe shall comply with ASTM C564 and be tested in accordance with ASTM C1563. Hub and spigot shall be clean and
2025 CALIFORNIA PLUMBING CODE 169
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SANITARY DRAINAGE
free of dirt, mud, sand, and foreign materials. Cut pipe shall be free from sharp edges. Fold and insert gasket into the hub. Lubricate the joint following manufacturer’s instructions. Insert spigot into hub until the spigot end of the pipe bottom out in the hub. Use the same procedure for the installation of fittings.
A mechanical joint shielded coupling type for hubless cast-iron pipe and fittings shall have a metallic shield that complies with ASTM A1056, ASTM C1277, ASTM C1540, or CISPI 310.
CPC § 1103.1 Medium relevance — show source text
(3) Not less than two drains shall be installed in roof areas of 10 000 square feet (929 m [2] ) or less, and not less than one additional drain shall be installed for each 10 000 square feet (929 m [2] ) of roof area exceeding 10 000 square feet (929 m [2] ). (4) Each roof drain shall have a precalibrated, fixed (nonadjustable), and proportional weir (notched) in a standing water collar inside the strainer. No mechanical devices or valves shall be permitted. (5) Pipe sizing shall be based on the pre-calibrated rate of flow (gpm) (L/s) of the pre-calibrated weir for the maximum allowable water depth, and Table 1103.1 and Table 1103.2.
(6) The height of stones or other granular material above the waterproofed surface shall not be considered in water depth measurement, and the roof surface in the vicinity of the drain shall not be recessed to create a reservoir.
(7) Roof design, where controlled-flow roof drainage is used, shall be such that the design roof live load is not less than 30 lb/ft [2] (146 kg/m [2] ) to provide a safety factor exceeding the 15 lb/ft [2] (73 kg/m [2] ) represented by the depth of water stored on the roof in accordance with Table 1105.1(1). (8) Scuppers shall be provided in parapet walls. The distance of scupper bottoms above the roof level at the drains shall not exceed the maximum distances specified in Table 1105.1(2).
(9) Scupper openings shall be not less than 4 inches (102 mm) high and have a width equal to the circumference of
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STORM DRAINAGE
the roof drain required for the area served, sized in accordance with Table 1103.1.
(10)Flashings shall extend above the top of the scuppers.
(11)At a wall or parapet, 45 degree (0.79 rad) cants shall be installed.
(12)Separate storm and sanitary drainage systems shall be provided within the building.
(13)Calculations for the roof drainage system shall be submitted along with the plans to the Authority Having Jurisdiction for approval.
TABLE 1105.1(1) CONTROLLED-FLOW MAXIMUM ROOF WATER DEPTH
ROOF RISE*
(inches)MAXIMUM WATER DEPTH AT
DRAIN
(inches)
Flat3
24
45
66 For SI units: 1 inch = 25.4 mm
- Vertical measurement from the roof surface at the drain to the highest point of the roof surface served by the drain, ignoring a local depression immediately adjacent to the drain.
TABLE 1105.1(2) DISTANCE OF SCUPPER BOTTOMS ABOVE ROOF
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
CPC § 1-33 Medium relevance — show source text
112 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
113 Means of Appeals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
114 Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
115 Stop Work Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
CHAPTER 2 DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
201 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
202 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
CHAPTER 3 OCCUPANCY CLASSIFICATION AND USE . . . . .3-1
301 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
302 Occupancy Classification and Use Designation . . . . 3-3
303 Assembly Group A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
304 Business Group B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
305 Educational Group E . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
306 Factory Group F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
307 High-Hazard Group H . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
308 Institutional Group I . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
309 Mercantile Group M. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
310 Residential Group R. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
311 Storage Group S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
312 Utility and Miscellaneous Group U . . . . . . . . . . . . . . 3-18
313 Laboratories Group L [SFM]. . . . . . . . . . . . . . . . . . . . . . .3-19
CPC § 1-24 Medium relevance — show source text
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Part 2—Administration and Enforcement . . . . . . . . . . . . . . . . . 1-24
103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . . 1-24
104 Duties and Powers of Building Official. . . . . . . . . . . 1-25
105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
106 Floor and Roof Design Loads . . . . . . . . . . . . . . . . . . . 1-29
107 Construction Documents . . . . . . . . . . . . . . . . . . . . . . 1-29
108 Temporary Structures, Equipment and Systems . . . . . . . . . . . . . . . . . . . . . 1-31
109 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
110 Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
111 Certificate of Occupancy. . . . . . . . . . . . . . . . . . . . . . . 1-33
112 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
113 Means of Appeals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
114 Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
115 Stop Work Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
CHAPTER 2 DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
201 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
202 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
CHAPTER 3 OCCUPANCY CLASSIFICATION AND USE . . . . .3-1
301 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
302 Occupancy Classification and Use Designation . . . . 3-3
CPC § 3.2 Medium relevance — show source text
The lead shall be caulked thoroughly at the inside and outside edges of the joint. After caulking, the finished joint shall not exceed [1] ⁄ 8 of an inch (3.2 mm) below the rim of the hub. No paint, varnish, or other coatings shall be permitted on the joining material until after the joint has been tested and approved.
705.2.2 Mechanical Joints and Compression Joints. Mechanical joints for cast-iron pipe and fittings shall be of the elastomeric compression type or mechanical joint couplings. Compression type joints with an elastomeric gasket for cast-iron hub and spigot pipe shall comply with ASTM C564 and be tested in accordance with ASTM C1563. Hub and spigot shall be clean and
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SANITARY DRAINAGE
free of dirt, mud, sand, and foreign materials. Cut pipe shall be free from sharp edges. Fold and insert gasket into the hub. Lubricate the joint following manufacturer’s instructions. Insert spigot into hub until the spigot end of the pipe bottom out in the hub. Use the same procedure for the installation of fittings.
A mechanical joint shielded coupling type for hubless cast-iron pipe and fittings shall have a metallic shield that complies with ASTM A1056, ASTM C1277, ASTM C1540, or CISPI 310. The elastomeric gasket shall comply with ASTM C564. Hubless cast-iron pipe and fittings shall be clean and free of dirt, mud, sand, and foreign materials. Cut pipe shall be free from sharp edges. Gasket shall be placed on the end of the pipe or fitting and the stainless steel shield and clamp assembly on the end of the other pipe or fitting. Pipe or fittings shall be seated against the center stop inside the elastomeric sleeve. Slide the stainless steel shield and clamp assembly into a position centered over the gasket and tighten. Bands shall be tightened using an approved calibrated torque wrench specifically set by the manufacturer of the couplings.
705.3 Copper or Copper Alloy Pipe (DWV) and Joints. Joining methods for copper or copper alloy pipe and fittings shall be installed in accordance with the manufacturer’s installation instructions and shall comply with Section 705.3.1 through Section 705.3.4.
705.3.1 Brazed Joints. Brazed joints between copper or copper alloy pipe and fittings shall be made with brazing alloys having a liquid temperature above 1000°F (538°C). The joint surfaces to be brazed shall be cleaned bright by either manual or mechanical means. Piping shall be cut square and reamed to full inside diameter. Brazing flux shall be applied to the joint surfaces where required by manufacturer’s recommendation. Brazing filler metal shall conform to AWS A5.8 and shall be
applied at the point where the pipe or tubing enters the socket of the fitting.
705.3.2 Mechanical Joints. Mechanical joints in copper or copper alloy piping shall be made with a mechanical coupling with grooved end piping or approved joint designed for the specific application.
CPC § 102.1 Medium relevance — show source text
Conflict 102.1, 102.4.1, 102.4.2, 104.2.4.1, 113.1, 302.2, 1302.1.2 Construction Documents 104.3, 105.3, 105.3.1, 105.4, 106, 113.4, 202, 601.2, A105.4, A205.3, A301.1, A406, A407.1 Construction Safeguards 101.5, Chapter 15 Accessibility 1511 Adjoining property 1505 Automatic sprinklers 1510 Fire extinguishers 1507 Means of egress 1508 Owner’s responsibilities 1502 Protection of pedestrians 1504 Sanitary 1503 Standpipes 1509 Water supply 1512 Corridor
Dead-end 801.4, 804.8, 1011.5.1, 1305.2.12, 1305.2.12.1, Table 1306.1 Doors 804.7.1, 1011.5.1 Exit access 801.4, 802.2.1, 802.4, 802.4.1, 901.2, 1011.8.2 Openings 804.7, 804.7.1, 804.7.2, 804.7.3, 804.7.3.1, 804.7.4, 1011.5.1,
1011.8.2
Projections 704.1.1 Rating 803.1.1, 1011.5.1, 1305.2.5, 1305.2.5.1, Table 1305.2.5, Table
1306.1
Dangerous Nonstructural 115.1, 116.1 Structural 104.4, 114.1, 117.1, 202,
302.1
Deferred Submittal 106.3.4, 106.6, 202 Definitions 202 Demolition 101.5, 104.3, 106.2.6, 108.5, 113.2, 115.5, 117, 1501.6, 1501.6.1, 1501.7, 1502.1, 1503.1, 1504.1, 1505.2 Department of Building Safety 104.2.4, 105.3, 109.3.8 Disproportionate Earthquake Damage 202, 405.2.2, 502.2
Egress (see Means of Egress) Electrical A102.1, 105.1, 105.1.1, 105.2, 108.3, 109.3.4, 202, 406, 801.3, 801.4, 806, 1007, 1101.2 Elevator 905.4, 1011.8.3, 1102.2, 1305.2.14, 1305.2.14.1, Table 1305.2.14, Table 1306.1 Emergency Escape and Rescue Openings 202, 505, 506.4, 702.4, 702.5, 702.5.1, 702.6 Emergency Power 804.6.
CPC § 11.0 Medium relevance — show source text
11.0 - 1.11.11_|||X|||||||||||||||||||||| |1.13.0||||||||||||||||||||X||||| |Division II - Scope and
Administration||||||||||||||||||||||||| |101.0||||||||||X|X|X||X|X|||||||||| |102.0||||||||||X|X|X||X|X|||||||||| |103.0||||||||||X|X|X||X|X|||||||||| |104.2 Items 1 & 2||||X|X|||||||||||||||||||| |104.3.1||||||||||X|X|X||X|X|||||||||| |104.4.3.1|X|||||||||||||||||||||||| |105.0||||||||||X|X|X||X|X||||||||||This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.
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CHAPTER 1
ADMINISTRATION
DIVISION I
CALIFORNIA ADMINISTRATION
1.1.0 General.
1.1.1 Title. These regulations shall be known as the Califor- nia Plumbing Code, may be cited as such and will be referred to herein as “this code.” The California Plumbing Code is Part 5 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of plumbing regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 Uniform Plumb- ing Code of the International Association of Plumbing and Mechanical Officials with necessary California amendments.
1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.
1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.
CPC § 1306.1 Medium relevance — show source text
1306.1
Dangerous Nonstructural 115.1, 116.1 Structural 104.4, 114.1, 117.1, 202,
302.1
Deferred Submittal 106.3.4, 106.6, 202 Definitions 202 Demolition 101.5, 104.3, 106.2.6, 108.5, 113.2, 115.5, 117, 1501.6, 1501.6.1, 1501.7, 1502.1, 1503.1, 1504.1, 1505.2 Department of Building Safety 104.2.4, 105.3, 109.3.8 Disproportionate Earthquake Damage 202, 405.2.2, 502.2
Egress (see Means of Egress) Electrical A102.1, 105.1, 105.1.1, 105.2, 108.3, 109.3.4, 202, 406, 801.3, 801.4, 806, 1007, 1101.2 Elevator 905.4, 1011.8.3, 1102.2, 1305.2.14, 1305.2.14.1, Table 1305.2.14, Table 1306.1 Emergency Escape and Rescue Openings 202, 505, 506.4, 702.4, 702.5, 702.5.1, 702.6 Emergency Power 804.6.5, 1305.2.15.1 Energy 302.2, 702.7, 708, 809, 907, 1104 Engineer (see Registered Design Professional) Equipment or Fixture 202 Existing (see Building) Existing Building 202 Existing Structure 202 Exit 504.1.4, 802.2.1, 802.4, 802.4.1, 804, 903.1, 903.3, 905.2, 905.3, 1011.5, 1011.5.1, Table 1011.5, 1011.8.2, 1102.2, 1305.2.3.2, 1305.2.6, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12, 1305.2.13, 1305.2.15.1, Table 1305.2.15, Table 1306.1,
A402 Exit, Horizontal 503.15, 804.10, 1305.2.3.1 Exterior Wall Covering 202 Addition and replacement 309 Automatic sprinkler systems 309.2.1 Exterior Wall Envelope 202 Addition and replacement 309 Automatic sprinkler systems 309.2.1
Fire Alarm Systems 803.4, 904.2, 1011.2.2,
CPC § 1-5 Medium relevance — show source text
102 Construction Documents
and Installation Verification . . . . . . . . . . . . . . . . . . . .1-5
103 Building Standards Commission. . . . . . . . . . . . . . . . . . .1-5 104 Department of Housing and Community Development. . . . . . . . . . . . . . . . . .1-6 105 Division of the State Architect . . . . . . . . . . . . . . . . . . . . .1-6
106 Office of Statewide Health Planning and Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
202 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
CHAPTER 3 GREEN BUILDING . . . . . . . . . . . . . . . . . . . . . . . . 3-3
301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
302 Mixed Occupancy Buildings . . . . . . . . . . . . . . . . . . . . . . .3-4 303 Phased Projects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 304 Voluntary Tiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 305 CALGreen Tier 1 and CALGreen Tier 2 . . . . . . . . . . . . . .3-4
306 Voluntary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
CHAPTER 4 RESIDENTIAL MANDATORY MEASURES . . . . . . 4-3
4.1 Planning and Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 4.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7 4.3 Water Efficiency and Conservation . . . . . . . . . . . . . . . . .4-9 4.4 Material Conservation and Resource Efficiency . . . . 4-11 4.5 Environmental Quality . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
CHAPTER 5 NONRESIDENTIAL MANDATORY MEASURES . . 5-3
CPC § 2-5 Medium relevance — show source text
CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
202 General Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
203 Occupancy Classification and Use . . . . . . . . . . . . . . . 2-40
CHAPTER 3 GENERAL REQUIREMENTS. . . . . . . . . . . . . . . . 3-3
301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
302 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
303 Asphalt Kettles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 304 Combustible Waste Material . . . . . . . . . . . . . . . . . . . . . .3-4
305 Ignition Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 306 Motion Picture Projection Rooms and Film . . . . . . . . .3-7 307 Open Burning, Recreational Fires and Portable Outdoor Fireplaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7 308 Open Flames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7 309 Powered Industrial Trucks and Equipment . . . . . . . . .3-9 310 Smoking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 311 Vacant Premises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
312 Vehicle Impact Protection . . . . . . . . . . . . . . . . . . . . . . 3-12 313 Fueled Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 314 Indoor Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 315 General Storage .
CPC § 1-21 Medium relevance — show source text
107 Temporary Uses, Equipment and Systems . . . . . . 1-21
108 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
109 Inspection and Enforcement . . . . . . . . . . . . . . . . . . 1-22
110 Certificate of Completion . . . . . . . . . . . . . . . . . . . . . 1-24
111 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
112 Means of Appeals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
113 Stop Work Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
202 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
CHAPTER 3 WILDLAND-URBAN INTERFACE AREAS . . . . 3-3
301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
302 Wildland-Urban Interface Area Designations . . . . . .3-3
CHAPTER 4 WILDLAND-URBAN INTERFACE AREA
REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . 4-3
401 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
402 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
403 Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
404 Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
CHAPTER 5 SPECIAL BUILDING CONSTRUCTION
REGULATIONS . . . . . . . . . . . . . . . . . . . . . . . . 5-3
501 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Frequently asked questions
What is found in §201 of the CPC and why does it matter?
Section 201 (General) explains the scope of the Definitions chapter, how to read gender/number/tense in code language, and how to treat terms defined in other codes; those interpretive rules determine whether a particular plain‑English meaning or a code‑specific definition controls compliance .
Where do I look for the definition of a plumbing term used elsewhere in the CPC?
Start in §202 (General Definitions) of Chapter 2; it contains the alphabetic list of defined terms used throughout the CPC. If a term isn’t defined there, §201 directs you to look to companion codes (California Building Code, California Mechanical Code, etc.) or to ordinary accepted meanings as a last resort .
Do CPC definitions ever refer to standards or other code sections?
Yes. Definitions frequently cross‑reference referenced standards, model code terms, or other Title 24 parts. When a term is defined by reference, the referenced standard or code text governs the technical meaning used for compliance and enforcement .
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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