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Earlier editions: 20222019

Index

Index — F

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-10-23 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Plumbing Code (Title 24, Part 5) · Effective January 1, 2026 · Official source: Building Standards Commission

– F –

F RATING . . . . . . . . . . . . . . .208.0, 1404.3, 1405.3, 1406.4

FAUCETS

Approved standards . . . . . . . . . . 417.1, 417.4, L 402.5.1

Common and Public Use Area . . . . . . . . . . . . . . 407.2.3

Kitchen . . . . . . . . . . . . . . . . . . . . . . . . . 420.2.1, 420.2.2

Maximum flow rate. . . . . . . . . . . . . . . . . . . 407.2, 420.2,

L 402.4, L 402.5

Metering. . . . . . . . . . . . . . . . . . 407.2.4, 407.2.4.1, 407.4,

Table L 402.1, L 402.5.2

Public Lavatory . . . . . . . . . . . . . . . . . . . . . . . . . .407.2.1

Residential kitchen . . . . . . . . . . . . . . . . 420.2.2, L 402.4

Residential Lavatory. . . . . . . . . . . . . . . . . . . . . . .407.2.2 Self closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.4 Separate controls for hot and cold water . . . . . . . . 417.5

Sink faucets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420.2

Temperature limitation. . . . . . . . . . . 407.3, 408.4, 409.4,

410.3, 416.2

With pull out spouts . . . . . . . . . . . . . . . . . . . . . . . . 417.4 FIRE SPRINKLERS, RESIDENTIAL . . . . . . . . . . . . . .612.0

FIREFIGHTER BREATHING AIR

REPLENISHMENT SYSTEMS . . . . . . . . . . . .Appendix F

FITTINGS

Branch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .419.2

Cleanout . . . . . . . . . . . . . . . . . . . . . . . . . . .707.1, 707.2

Dielectric . . . . . . . . . . . . . . . . . . . . . . .605.15, 605.16.1,

605.16.3, 705.10.2,

1322.6.1, E 403.8.2

Drainage system . . . . . . . . . . .Table 701.2, 701.3, 705.0,

706.0, E 504.3

Firefighter breathing air replenishment systems . . . . . . . . . . . . . . . . . .F 801.3

Fixture . . . . . . . . . . . . . . . . . . . . . . .402.9, 403.2, 417.0,

603.5.20, L 402.0

Fuel gas piping . . . . . . . . . . . . . . . .1208.5.4, 1208.5.9,

1208.5.10, 1210.4.1

Fuel gas vent . . . . . . . . . . . . . . . . . .509.3.6(2), 509.4.2,

510.2.8, 510.2.9

Gray water . . . . . . . . . . . . . . . . . . . . . . . . . . . .1503.9.2

Inlet, for fixture connections . . . . . . . . . . . .704.1, 704.2

Lead content . . . . . . . . . . . . . . . . . . . . . .604.2, 604.2.1

Material of . . . . . . . . . . . . . . . . . . . .604.0, Table 604.1,

Table 701.2, 701.3, 903.0,

1208.5, 1208.5.9, 1208.5.9.5

Medical gas

and medical vacuum . . . . . .1320.2, 1320.2.1, 1321.1

Plumbing vent . . . . . . . . . . . . . . . . . . . . . . . . . . . .903.0

Prohibited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.1

Screwed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310.8

Water supply system . . . . . . . . . . . .604.0, Table 604.1,

605.0, A 107.3

FIXTURE . . . . . . . . . . . . . . . . . . . . .(see Plumbing fixtures)

Branch, definition . . . . . . . . . . . . . . . . . . . . . . . . .208.0

Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . .422.1.1

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704.0

Drain, definition . . . . . . . . . . . . . . . . . . . . . . . . . . .208.0

Flanged connection . . . . . . . . . . . . . . . . . . . . . . . .402.6

Future installations . . . . . . . . . . . . . . . . . . . . . . . .402.11

Plumbing . . . . . . . . . . . . . . . . . . (see Plumbing fixtures) Units, drainage (DFU) . . . . . . . . . . . 702.1, Table 702.1,

C 303.1, Table C 303.3

Units, water supply (WSFU) . . . . . . . 610.3, Table 610.3,

610.10, Table 610.10,

A 103.1, Table A 103.1,

C 303.1, Table C 303.2

FLAGPOLING OF VENTS . . . . . . . . . . . . . . . . . . . . . .906.3

FLAMMABLE VAPOR OR FUMES . . . . . . . . . . .208.0, 507.12

FLASHING . . . . . . . . . . . . . . . . . . . . . . . . .701.5, 906.5, 906.6,

1102.3, K 103.1.1

FLOOD RESISTANT CONSTRUCTION

Coastal high hazard area . . . . . . . . . . . . .205.0, 301.4.1

Design flood elevation . . . . . . . . . . . . . . . . . . . . . .206.0

Flood hazard area . . . . . . . . . . . . . . . . . . . . . . . . .208.0

Flood hazard resistance . . . . . . . . . . . . . . . . . . . . .301.4

FLOOD-LEVEL RIM . . . . . . . . . . . . . . . . . . . .208.0, 801.3.2

FLOODED, DEFINITION . . . . . . . . . . . . . . . . . . . . . . .208.0

FLOOR DRAINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .418.0

Connected into a trap . . . . . . . . . . . . . . .1006.1, 1007.1

Directly connected to

drainage system . . . . . . . . . . . . . . . . . . . . . . . .1007.1

Location . . . . . . . . . . . . . . . . . . . . .418.3, 418.4, 1017.1

Required . . . . . . . . . . . . . . .408.8, 704.3, 1017.1, E 501.6

FLUSH TANKS . . . . . . . . . . . . . . . . . . .208.0, 402.4, 413.1,

413.3, 413.5, 601.2

FLUSH VALVES, DEFINITION . . . . . . . . . . . . . . . . . . .208.0

FLUSHOMETER TANKS . . . . . . . . . . . . . . . . .208.0, 411.2,

413.1, 603.5.3

FLUSHOMETER VALVES . . . . . .208.0, 413.1, 413.2, 601.2,

603.5.1, 610.10,

Table 610.10, L 402.2.2

FLUX . . . . . . . . . . . . . . . . . . . . . . . . . .604.1, 604.2, 605.1.1,

605.1.4, 705.3.1, 705.3.3,

1321.9, 1321.9.2, 1321.11.1

FOG DISPOSAL SYSTEMS . . . . . . . . . . . . . .208.0, 1015.0

FOOD ESTABLISHMENT, DEFINITION . . . . . . . . . . . . . 208.0

FOOD-HANDLING EQUIPMENT

AND FIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . . . .801.3

FOOD WASTE DISPOSER . . . . . . . . . . . . . . .419.0, 714.4,

1001.2, 1014.1.3

FREEZE PROTECTION . . . . . . . . . . . . . . . . . . .312.6, 603.4.7,

603.5.7, 608.2, 1005.1

1210.1.4, 1210.7.1, 1323.2,

1503.9.4, 1603.16, K 106.0

FROST OR SNOW CLOSURE . . . . . . . . . . . . . . . . . . .906.7

FUEL GAS PIPING . . . . . . . . . . . . . . . . . . . . . . .Chapter 12 Cathodic protection . . . . . . . . . . .E 403.8.1 – E 403.8.4 Change in direction . . . . . . . . . . . . . . . . . . . . . . .1210.6

Concealed location . . . . . . . . . . . . . . . . . . . . . . .1210.4

Detection of leaks . . . . . . . . . . . . . . . . . . . . . . . .1213.4

Electrical bonding and grounding . . . . . . . . . . . . .1211.0 Inspection and testing . . . . . . . . . . . . . . .1203.0, 1213.0

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1210.0

Interconnections . . . . . . . . . . . . . . . . . . . . . . . . .1208.2

Joints and fittings . . . . . . . . . . . . . . . . . . . . . . . . .1208.5.4,

1208.5.10 – 1208.5.11.4,

1213.2.1, 1213.2.2

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1208.5

Obstruction of flow . . . . . . . . . . . . . . . . . . . . . . .1210.10

Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1213.6 Sizing . . . . . . . . . . . . . . . . . . . .1208.4, 1214.0, 1215.0, Table 1215.2(1) – Table 1215.2(36),

E 403.3

Supports . . . . . . . . . . . . . . . .1210.3.5, Table 1210.3.5.1 Underground installation . . . . . .1208.5.2.3, 1208.5.3.4,

1210.1, E 401.2,

E 403.7, E 403.8.4

FUEL GAS VENTS

Appliances not requiring vents . . . . . . . . . . . . . .509.2.1 Caps . . . . . . . . . . . . . . . . . . . . . . .509.6.1(6), 509.7.4(3)

Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.7.3.4,

Table 509.7.3.4(1), Table 509.7.3.4(2)

Dampers . . . . . . . . . . . . . . . . . . . . . . . .509.13, 509.14,

509.14.1

Direct-vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.2.6

General requirements . . . . . . . . . . . . . . . . . . . . . .509.0

Insulation shield . . . . . . . . . . . . . . . . . . . . . . . .509.6.1.1

Integral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.2.7 Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.1

Mechanical draft . . . . . . . . . . . . . . . .509.3.3, 509.3.3.4

Obstruction of flow . . . . . . . . . . . . . . . . . . . . . . . .509.15

Plastic piping . . . . . . . . . . . . . . . . . . . . . . . . . . .509.4.1 Special . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.4.3

Termination . . . . . . . . . . . . . . . .509.6.1, 509.7.2, 509.8

Wall penetrations . . . . . . . . . . . . . . . . . . . . . . . . . .509.8 FUEL GAS VENT, SIZING Category I appliances . . . . . . . . . . . . . .509.6.2.1, 510.0 Multiple appliances . . . . . . . . . . . . . . . . . . . . . . . .510.2, Table 510.2(1) – Table 510.2(9) Multistory . . . . . . . . . . . . . . . . . . . . .509.6.3, 509.6.3.2,

510.2.13 – 510.2.16

Single appliance . . . . . . . . . . .509.7.4(1)(b), 509.10.2.1,

510.1, 510.1.2,

Table 510.1.2(1) – Table 510.1.2(6)

FUTURE CONNECTIONS . . . . . . . . . . . . . . . . . . . .1504.9.1

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