Heads up:
There are no amended sections in this chapter.
| Adopting Agency | BSC | BSC- CG |
SFM | HCD | DSA | OSHPD | BSCC | DPH | AGR | DWR | CEC | CA | SL | SLC | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 1-AC | AC | SS | SS/CC | 1 | 1R | 2 | 3 | 4 | 5 | ||||||||||||
| Adopt Entire Chapter | X | ||||||||||||||||||||||
| Adopt Entire Chapter as amended (amended sections listed below) | X | X | X | X | X | X | X | X | X | ||||||||||||||
| Adopt only those sections that are listed below | |||||||||||||||||||||||
| Chapter/Section | |||||||||||||||||||||||
| 301.3 | X | ||||||||||||||||||||||
| 301.3.1 | †| †| |||||||||||||||||||||
| 301.3.1.1 | †| †| |||||||||||||||||||||
| 301.3.1.2 | †| †| |||||||||||||||||||||
| 301.4.1 | X | X | |||||||||||||||||||||
| 301.6 | X | ||||||||||||||||||||||
| 301.7 | X | ||||||||||||||||||||||
| 303.1 Exception | X | ||||||||||||||||||||||
| 304.1 Exception | X | ||||||||||||||||||||||
| 310.9 | X | X | X | X | X | ||||||||||||||||||
| 310.10 | X | X | X | X | |||||||||||||||||||
| 310.11 | X | ||||||||||||||||||||||
| 310.12 | X | X | X | X | |||||||||||||||||||
| 310.13 | X | X | X | ||||||||||||||||||||
| 311.1 Note | X | X | |||||||||||||||||||||
| 312.2 | X | X | X | X | |||||||||||||||||||
| 312.7 | X | X | X | X | X | ||||||||||||||||||
| 312.11 | X | X | |||||||||||||||||||||
| 313.8 | X | X | X | X | X | ||||||||||||||||||
| 319.0 | X | X | X | X | X | ||||||||||||||||||
| 321.0 | X | X | X | X | X | ||||||||||||||||||
| 322.0 | X | X | X | X | |||||||||||||||||||
| 323.0 | X | X | X | X | X | ||||||||||||||||||
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.
This chapter shall govern the general
requirements, not specific to other chapters, for the installation
of plumbing systems.
Pipe, pipe fittings, traps, fixtures,
material, and devices used in a plumbing system shall be listed (third-party certified) by a listing agency (accredited
conformity assessment body) as complying with the approved
applicable recognized standards referenced in this code, and
shall be free from defects. Unless otherwise provided for in
this code, materials, fixtures, or devices used or entering into
the construction of plumbing systems, or parts thereof shall be
submitted to the Authority Having Jurisdiction for approval.
Each length of pipe and each pipe fitting,
trap, fixture, material, and device used in a plumbing
system shall have cast, stamped, or indelibly marked on it any markings required by the applicable referenced
standards and listing agency, and the manufacturer's
mark or name, which shall readily identify the manufacturer
to the end user of the product. Where required by
the approved standard that applies, the product shall be
marked with the weight and the quality of the product.
Materials and devices used or entering into the construction
of plumbing and drainage systems, or parts
thereof shall be marked and identified in a manner satisfactory
to the Authority Having Jurisdiction. Such marking
shall be done by the manufacturer. Field markings
shall not be acceptable.
Standards listed or referred to in
this chapter or other chapters cover materials that will
conform to the requirements of this code, where used in
accordance with the limitations imposed in this or other
chapters thereof and their listing. Where a standard covers
materials of various grades, weights, quality, or configurations,
the portion of the listed standard that is
applicable shall be used. Design and materials for special
conditions or materials not provided for herein shall
be permitted to be used by special permission of the
Authority Having Jurisdiction after the Authority Having
Jurisdiction has been satisfied as to their adequacy. A
list of plumbing standards that appear in specific sections
of this code is referenced in Table 1701.1. Standards referenced
in Table 1701.1 shall be applied as indicated in
the applicable referenced section. A list of additional
standards, publications, practices, and guides that are not
referenced in specific sections of this code appear in
Table 1701.2. The documents indicated in Table 1701.2
shall be permitted in accordance with Section 301. 3. An
IAPMO Installation Standard is referenced in Appendix
I for the convenience of the users of this code. It is not
considered as a part of this code unless formally adopted
as such by the Authority Having Jurisdiction.
In existing buildings or
premises in which plumbing installations are to be
altered, repaired, or renovated, the Authority Having
Jurisdiction has discretionary powers to permit deviation
from the provisions of this code, provided that such proposal
to deviate is first submitted for proper determination
in order that health and safety requirements, as they
pertain to plumbing, shall be observed.
Nothing in this code is intended to prevent
the use of systems, methods, or devices of equivalent or
superior quality, strength, fire resistance, effectiveness, durability,
and safety over those prescribed by this code. Technical
documentation shall be submitted to the Authority Having
Jurisdiction to demonstrate equivalency prior to installation.
The Authority Having Jurisdiction shall have the authority to
approve or disapprove the system, method, or device for the
intended purpose. [HCD 1] (See Section 1.8.7)
However, 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 alternate material or method of construction 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 where the submitted data does not prove equivalency.
However, 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 alternate material or method of construction 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 where the submitted data does not prove equivalency.
The Authority Having Jurisdiction
shall have the authority to require tests, as proof of equivalency.
Tests shall be made in accordance
with approved or applicable standards, by an
approved testing agency at the expense of the applicant.
In the absence of such standards, the Authority
Having Jurisdiction shall have the authority to specify
the test procedure.
The Authority Having Jurisdiction shall
have the authority to require tests to be made or
repeated where there is reason to believe that a material
or device no longer is in accordance with the
requirements on which its approval was based.
Plumbing systems shall be
located above the elevation in accordance with the building
code for utilities and attendant equipment or the elevation of
the lowest floor, whichever is higher.
Exception: Plumbing systems shall be permitted to be
located below the elevation in accordance with the building
code for utilities and attendant equipment or the elevation of
the lowest floor, whichever is higher, provided that the systems
are designed and installed to prevent water from entering
or accumulating within their components, and the systems
are constructed to resist hydrostatic and hydrodynamic loads
and stresses, including the effects of buoyancy, during the
occurrence of flooding to such elevation.
Plumbing systems
in buildings located in coastal high hazard areas
shall be in accordance with the requirements of Section
301.4, and plumbing systems, pipes, and fixtures shall
not be mounted on or penetrate through walls that are
intended to breakaway under flood loads in accordance
with the California Building Code or California Residential
Code.
An alternative
engineered design shall comply with the intent of the provisions
of this code and shall provide an equivalent level of
quality, strength, effectiveness, fire resistance, durability, and
safety. Material, equipment, or components shall be designed
and installed in accordance with the manufacturer's installation
instructions.
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.
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.
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.
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.
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 independent
review of the design documents by a registered
design professional selected by the Authority Having
Jurisdiction and at the expense of the applicant.
The alternative engineered
design shall be tested and inspected in accordance
with the submitted testing and inspection plan and the
requirements of this code.
[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 authority,
provided that such alternative facilities or installations
provide substantially equivalent or greater protection to
health and safety.
For OSHPD 1R, refer to
Section 309 of the California Existing Building Code for general requirements.
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.
Exception: [HCD 1] Limited-density owner-built rural
dwellings. A water closet shall not be required when an alternate
system is provided and has been approved by the local
health official. Where an alternative to the water closet is
installed, a system for the disposal or treatment of graywater
shall be provided to the dwelling. Graywater systems shall be
designed according to water availability, use and discharge.
The design, use and maintenance standards of such systems
shall be the prerogative of the local health official.
Plumbing fixtures, drains, appurtenances,
and appliances, used to receive or discharge liquid wastes or
sewage, shall be connected properly to the drainage system of
the building or premises, in accordance with the requirements
of this code.
Exception: [HCD 1] Limited-density owner-built rural
dwellings. Where conventional plumbing, in all or in part, is
installed within the structure, it shall be installed in accordance
with the provisions of this code. Alternative materials and
methods shall be permitted provided that the design complies
with the intent of the code, and that such alternatives shall perform
to protect health and safety for the intended purpose.
It shall be unlawful for a person
to deposit, by any means whatsoever, into a plumbing fixture,
floor drain, interceptor, sump, receptor, or device, which is connected to a drainage system, public sewer, private
sewer, septic tank, or cesspool, any ashes; cinders; solids;
rags; inflammable, poisonous, or explosive liquids or gases;
oils; grease; or any other thing whatsoever that is capable of
causing damage to the drainage system or public sewer.
Wastes detrimental to the public
sewer system or detrimental to the functioning of the
sewage treatment plant shall be treated and disposed of as
found necessary and directed by the Authority Having Jurisdiction.
Sewage or other waste from a
plumbing system that is capable of being deleterious to surface
or subsurface waters shall not be discharged into the
ground or a waterway unless it has first been rendered safe
by some acceptable form of treatment in accordance with the
Authority Having Jurisdiction.
Except as otherwise provided in this code,
no plumbing system, drainage system, building sewer, private
sewage disposal system, or parts thereof shall be located
in a lot other than the lot that is the site of the building, structure,
or premises served by such facilities.
No subdivision, sale, or transfer of ownership
of existing property shall be made in such manner that
the area, clearance, and access requirements of this code are
decreased.
Piping, fixtures, or equipment shall not be
so located as to interfere with the normal use thereof or with
the normal operation and use of windows, doors, or other
required facilities.
Design, construction, and
workmanship shall be in accordance with accepted engineering
practices and shall be of such character as to secure the
results sought to be obtained by this code.
It is unlawful to conceal
cracks, holes, or other imperfections in materials by
welding, brazing, or soldering or by using therein or thereon
paint, wax, tar, solvent cement, or other leak-sealing or repair
agent.
Plumbing systems shall be
installed in a workmanlike manner which is in accordance
with this code, applicable standards, and the manufacturer's
installation instructions. All materials shall be installed so as
not to adversely affect the systems and equipment or the
structure of the building, and in compliance with all laws and other provisions of this code. All plumbing systems shall be
in accordance with construction documents approved by the
Authority Having Jurisdiction.
Plumbing piping systems
shall be designed and installed in conformance with sound
limitations as required in the California Building Code.
No double hub fitting, single or double tee
branch, single or double tapped tee branch, side inlet quarter
bend, running thread, band, or saddle shall be used as a
drainage fitting, except that a double hub sanitary tapped tee
shall be permitted to be used on a vertical line as a fixture
connection.
No waste connection shall be
made to a closet bend or stub of a water closet or similar fixture.
Except as hereinafter
provided in Section 908.0 through Section 911.0, no
vent pipe shall be used as a soil or waste pipe, nor shall a soil
or waste pipe be used as a vent. Also, single-stack drainage
and venting systems with unvented branch lines are prohibited.
No fitting, fixture and piping
connection, appliance, device, or method of installation that
obstructs or retards the flow of water, wastes, sewage, or air
in the drainage or venting systems, in an amount exceeding
the normal frictional resistance to flow, shall be used unless
it is indicated as acceptable in this code or is approved in
accordance with Section 301.2 of this code. The enlargement
of a 3 inch (80 mm) closet bend or stub to 4 inches (100 mm)
shall not be considered an obstruction.
Except for necessary valves,
where intermembering or mixing of dissimilar metals occurs,
the point of connection shall be confined to exposed or accessible
locations.
Valves, pipes, and fittings shall be
installed in correct relationship to the direction of flow.
Screwed fittings shall be ABS,
cast-iron, copper, copper alloy, malleable iron, PVC, steel, or
other approved materials. Threads shall be tapped out of solid
metal or molded in solid ABS or PVC.
[OSHPD 1, 2, 3, 4 & 5] Drainage piping over operating and delivery rooms, nurseries, food preparation centers, food-serving facilities, food storage areas, and other sensitive areas shall be kept to a minimum and shall not be exposed. Special precautions shall be taken to protect these areas from possible leakage from necessary overhead drainage piping systems. Piping over switchboards, panel boards, and motor control centers are subject to restrictions of the California Electrical Code where applicable.
[OSHPD 1, 3, 4 & 5] Floor drains, waste traps, sanitary drainage cleanouts and handwashing fixtures shall not
be installed in operating and delivery rooms. Floor drains
with self-priming traps may be installed in cystoscopic rooms.
Floor drains shall not be installed in compounding buffer or
ante rooms
[SFM] For applications listed in Section 1.11.0 regulated
by the Office of the State Fire Marshal, plastic piping
shall not be exposed as a portion of the interior room finish
in a building or structure if the piping has a flame-spread rating
exceeding 75 when tested in accordance with ASTM E84-77a, "Test for Surface Burning Characteristics of Building
Materials. "
Refer to Sections 1224.4.1, 1225.2.1 and 1228.4.1.1, California Building Code.
[OSHPD 1, 4 & 5]. Where telecommunications service
entrance rooms, technology equipment centers, or technology
distribution rooms are provided in accordance with Section
1224.5 of the California Building Code, plumbing
equipment and fixtures that are not directly related to the support
of the room shall not be installed in or pass through the
room.
The drainage system of each new building
and new work installed in an existing building shall be separate
and independent from that of any other building, and,
where available, every building shall have an independent
connection with a public or private sewer.
Exception: Where one building stands in the rear of another
building on an interior lot, and no private sewer is available or
can be constructed to the rear building through an adjoining
court, yard, or driveway, the building drain from the front building
shall be permitted to be extended to the rear building.
Note:
Accessory dwelling units are not required to have independent service utility (drainage) connections provided they
meet the specific requirements in Government Code Section
65852.2.
Piping passing under or through walls shall
be protected from breakage. Piping passing through or under
cinders or other corrosive materials shall be protected from
external corrosion in an approved manner. Approved provisions
shall be made for expansion of hot water piping. Voids
around piping passing through concrete floors on the ground
shall be sealed.
Piping in connection with a plumbing
system shall be so installed that piping or connections will
not be subject to undue strains or stresses, and provisions shall
be made for expansion, contraction, and structural settlement.
No plumbing piping shall be directly embedded in concrete or
masonry. No structural member shall be seriously weakened
or impaired by cutting, notching, or otherwise, as defined in
the California Building Code or California Residential Code.
No building
sewer or other drainage piping or part thereof, constructed
of materials other than those approved for use under or within
a building, shall be installed under or within 2 feet (610 mm)
of a building or structure, or less than 1 foot (305 mm) below
the surface of the ground.
Piping subject to corrosion, erosion, or mechanical damage
shall be protected in an approved manner.
No water, soil, or waste pipe
shall be installed or permitted outside of a building, in attics
or crawl spaces, or in an exterior wall unless, where necessary,
adequate provision is made to protect such pipe from
freezing.
Piping penetrations
of fire-resistance-rated walls, partitions, floors, floor/ceiling
assemblies, roof/ceiling assemblies, or shaft enclosures shall
be protected in accordance with the requirements of the California
Building Code or California Residential Code.
Joints at the roof
around pipes, ducts, or other appurtenances shall be made
watertight by the use of lead, copper, galvanized iron, or other
approved flashings or flashing material. Exterior wall openings
shall be made watertight. Counterflashing shall not
restrict the required internal cross-sectional area of the vent.
Plastic and copper or copper alloy
piping penetrating framing members to within 1 inch (25.4
mm) of the exposed framing shall be protected by steel nail
plates not less than No. 18 gauge (0.0478 inches) (1.2 mm) in
thickness. The steel nail plate shall extend along the framing
member not less than 11/2 inches (38 mm) beyond the outside
diameter of the pipe or tubing.
Exception: See Section 1210.3.3.
Sleeves shall be provided to protect piping
through concrete and masonry walls, and concrete floors.
Exception: Sleeves shall not be required where openings are
drilled or bored.
Piping through concrete or
masonry walls shall not be subject to a load from building
construction.
In exterior walls, annular
space between sleeves and pipes shall be sealed and
made watertight, as approved by the Authority Having
Jurisdiction. A penetration through fire-resistive construction
shall be in accordance with Section 312.7.
A structural member weakened
or impaired by cutting, notching, or otherwise shall be
reinforced, repaired, or replaced so as to be left in a safe structural
condition in accordance with the requirements of the
California Building Code or California Residential Code.
Strainer plates on drain inlets
shall be designed and installed so that no opening exceeds 1/2
of an inch (12.7 mm) in the least dimension.
Piping, fixtures, appliances, and appurtenances
shall be supported in accordance with this code, the
manufacturer's installation instructions, and in accordance
with the Authority Having Jurisdiction.
Suspended piping shall be supported
at intervals not to exceed those shown in Table 313.3.
For SI units: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
Notes:
| MATERIALS | TYPES OF JOINTS | HORIZONTAL | VERTICAL |
| Cast | Lead and Oakum | 5 feet, except 10 feet where 10 foot lengths are installed1, 2, 3 |
Base and each floor, not to exceed 15 feet |
| Compression Gasket | Every other joint, unless over 4 feet then support each joint1, 2, 3 |
Base and each floor, not to exceed 15 feet |
|
| Cast-Iron Hubless | Shielded Coupling | Every other joint, unless over 4 feet then support each joint1, 2, 3, 4 |
Base and each floor, not to exceed 15 feet |
| Copper & Copper Alloys |
Soldered, Brazed, Threaded, or Mechanical |
11/2 inches and smaller, 6 feet; 2 inches and larger, 10 feet |
Each floor, not to exceed 10 feet5 |
| Steel Pipe for Water or DWV |
Threaded or Welded | 3/4 inch and smaller, 10 feet; 1 inch and larger, 12 feet |
Every other floor, not to exceed 25 feet5 |
| Steel Pipe for Gas | Threaded or Welded | 1/2 inch, 6 feet; 3/4 inch and 1 inch, 8 feet; 11/4 inches and larger, 10 feet |
1/2 inch, 6 feet; 3/4 inch and 1 inch, 8 feet; 11/4 inches every floor level |
| Schedule 40 PVC and ABS DWV |
Solvent Cemented | All sizes, 4 feet; allow for expansion every 30 feet3 |
Base and each floor; provide mid-story guides; provide for expansion every 30 feet |
| CPVC | Solvent Cemented | 1 inch and smaller, 3 feet; 11/4 inches and larger, 4 feet |
Base and each floor; provide mid-story guides |
| CPVC-AL-CPVC | Solvent Cemented | 1/2 inch, 5 feet; 3/4 inch, 65 inches; 1 inch, 6 feet |
Base and each floor; provide mid-story guide |
| Lead | Wiped or Burned | Continuous Support | Not to exceed 4 feet |
| Steel | Mechanical | In accordance with standards acceptable to the Authority Having Jurisdiction | |
| PEX | Cold Expansion, Insert and Compression |
1 inch and smaller, 32 inches; 11/4 inches and larger, 4 feet |
Base and each floor; provide mid-story guides |
| PEX-AL-PEX | Metal Insert and Metal Compression |
Base and each floor; provide mid-story guides |
|
| PE-AL-PE | Metal Insert and Metal Compression |
Base and each floor; provide mid-story guides |
|
| PE-RT | Insert and Compression | 1 inch and smaller, 32 inches; 11/4 inches and larger, 4 feet |
Base and each floor; provide mid-story guides |
| Polypropylene (PP) | Fusion weld (socket, butt, saddle, electrofusion), threaded (metal threads only), or mechanical | 1 inch and smaller, 32 inches; 11/4 inches and larger, 4 feet |
Base and each floor; provide mid-story guides |
Notes:
- 1 Support adjacent to joint, not to exceed 18 inches (457 mm).
- 2 Brace not to exceed 40 foot (12192 min) intervals to prevent horizontal movement.
- 3 Support at each horizontal branch connection.
- 4 Hangers shall not be placed on the coupling.
- 5 Vertical water lines shall be permitted to be supported in accordance with recognized engineering principles with regard to expansion and contraction, where first approved by the Authority Having Jurisdiction.
Piping shall be supported in such a manner
as to maintain its alignment and prevent sagging.
Piping in the ground
shall be laid on a firm bed for its entire length; where other
support is otherwise provided, it shall be approved in accordance
with Section 301.2.
Hanger rod sizes shall be not
smaller than those shown in Table 313.6.
For SI units: 1 inch= 25.4 mm
| PIPE AND TUBE SIZE (inches) |
ROD SIZE (inches) |
| 1/2-4 | 3/8 |
| 5-8 | 1/2 |
| 10-12 | 5/8 |
Gas piping shall be supported by metal
straps or hooks at intervals not to exceed those shown in Table
1210.2.4.1.
[OSHPD 1, 2, 3, 4 & 5] Refer to Title 24, Part 2 of the California Building Code for seismic anchorage and bracing requirements and accommodations for building displacements.
Trenches deeper than the footing of a
building or structure, and paralleling the same, shall be located not less than 45 degrees (0.79 rad) from the bottom
exterior edge of the footing, or as approved in accordance
with Section 301.0.
Tunneling and driving shall
be permitted to be done in yards, courts, or driveways of a
building site. Where sufficient depth is available to permit,
tunnels shall be permitted to be used between open-cut
trenches.
Tunnels shall have a clear height of 2 feet (610 mm) above the pipe and shall be limited in length to one-half the depth of the trench, with a maximum length of 8 feet (2438 mm). Where pipes are driven, the drive pipe shall be not less than one size larger than the pipe to be laid.
Tunnels shall have a clear height of 2 feet (610 mm) above the pipe and shall be limited in length to one-half the depth of the trench, with a maximum length of 8 feet (2438 mm). Where pipes are driven, the drive pipe shall be not less than one size larger than the pipe to be laid.
Excavations required to be made
for the installation of a building drainage system or part
thereof, within the walls of a building, shall be open trench
work and shall be kept open until the piping has been
inspected, tested, and accepted.
Excavations shall be completely backfilled
as soon after inspection as practicable. Precaution shall
be taken to ensure compactness of backfill around piping
without damage to such piping. Trenches shall be backfilled
in thin layers to 12 inches (305 mm) above the top of the piping
with clean earth, which shall not contain stones, boulders,
cinder fill, frozen earth, construction debris, or other materials
that will damage or break the piping or cause corrosive
action. Mechanical devices such as bulldozers, graders, etc.,
shall be permitted to be then used to complete backfill to
grade. Fill shall be properly compacted. Precautions shall be
taken to ensure permanent stability for pipe laid in filled or
made ground.
Underground thermoplastic pipe and fittings for sewers and other gravity flow applications shall be installed in accordance with this code and Section 314.4.1.
Underground thermoplastic pipe and fittings for sewers and other gravity flow applications shall be installed in accordance with this code and Section 314.4.1.
Trench width for thermoplastic sewer pipe
shall be not less than 1.25 times the outside diameter of
the piping plus 12 inches (305 mm) or the outside diameter
of the piping plus not less than 16 inches (406 mm).
Thermoplastic piping shall be bedded in not less than 4
inches (102 mm) of granular fill supporting the piping.
The backfill for thermoplastic piping shall be compacted
along the sides of the piping in 6 inch (152 mm) layers
and continue to not less than 12 inches (305 mm) above
the piping. Compaction shall be not less than an 85 percent
standard proctor density.
Approved unions shall be permitted to be
used in drainage piping where accessibly located in the trap
seal or between a fixture and its trap; in the vent system,
except underground or in wet vents; at any point in the water
supply system; and in gas piping as permitted by Section
1212.5.1.
Where different sizes of pipes and fittings
are to be connected, the proper size increasers or reducers or
reducing fittings shall be used between the two sizes. Copper
alloy or cast-iron body cleanouts shall not be used as a
reducer or adapter from cast-iron drainage pipe to iron pipe
size (IPS) pipe.
Food or drink shall not be stored, prepared, or
displayed beneath soil or drain pipes unless those areas are protected
against leakage or condensation from such pipes reaching
the food or drink as described below. Where building design
requires that soil or drain pipes be located over such areas, the
installation shall be made with the least possible number of joints and shall be installed to connect to the nearest adequately
sized vertical stack with the provisions as follows:
- Openings through floors over such areas shall be sealed watertight to the floor construction.
- Floor and shower drains installed above such areas shall be equipped with integral seepage pans.
- Soil or drain pipes shall be of an approved material as listed in Table 1701.1 and Section 701.2. Materials shall comply with established standards. Cleanouts shall be extended through the floor construction above.
- Piping subject to operation at temperatures that will form condensation on the exterior of the pipe shall be thermally insulated.
- Where pipes are installed in ceilings above such areas, the ceiling shall be of the removable type or shall be provided with access panels to form a ready access for inspection of piping.
Tests in accordance with this code, which
are performed utilizing dial gauges, shall be limited to gauges
having the following pressure graduations or incrementations.
Required pressure
tests of 10 pounds-force per square inch (psi) (69 kPa) or
less shall be performed with gauges of 0.10 psi (0.69 kPa)
incrementation or less.
Required pressure tests exceeding 10 psi (69 kPa) but less
than or equal to 100 psi (689 kPa) shall be performed with
gauges of 1 psi (7 kPa) incrementation or less.
Such piping shall be in accordance with the
requirements of Chapter 13. The Authority Having Jurisdiction
shall require evidence of the competency of the installers
and verifiers.
Where pressure piping systems are rehabilitated
using an epoxy lining system, it shall be in accordance
with ASTM F2831.
[OSHPD 1,
2, 3 (surgical clinics), 4 & 5] During periods of power
outages essential electrical power shall be provided for the
following equipment:
- Domestic water booster pumps.
- Domestic hot water circulating pumps.
- Sewage ejector pumps.
- Sump pumps and drainage pumps.
- Domestic water heating equipment and their controls.
- Fuel pumps.
- Grease removal devices requiring electrical power.
[OSHPD 1, 2, 4 & 5] For projects associated with provision of psychiatric services in acute psychiatric hospitals, general acute-care hospitals, and special treatment program service units in skilled nursing facilities, special design considerations for injury and suicide prevention shall be given to shower, bath, toilet, and sink plumbing fixtures. Shower heads shall be of flush-mounted design to minimize anchor points.
Plumbing equipment schedules shall clearly indicate which equipment will be on essential power or appropriate special seismic certifications.
