Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS
1310.6 Backfilling and Trenching.
California Plumbing Code (Title 24, Part 5) · 2019 edition · updated 2026-09-10 · California
Italicized text is a California amendment to the model code, as printed in the official publication.
The installation procedure for underground piping shall protect the piping from physical damage while being backfilled. [NFPA 99:5.1.10.11.5.2] 1310.6.1 Conduit, Cover, or Enclosure. If underground piping is protected by a conduit, cover, or other enclosure, the following requirements shall be met: (1) Access shall be provided at the joints for visual
inspection and leak testing.
1310.7.1 Flexible Connectors. Flexible connectors, metallic or nonmetallic, shall have a minimum burst pressure with a gauge pressure of 1000 psi (6895 kPa).
[NFPA 99:5.1.10.11.6.2] 1310.7.2 Metallic Flexible Joints. Metallic flexible joints shall be permitted in the pipeline where required for expansion joints, seismic protection, thermal expansion, or vibration control and shall be as follows: (1) For all wetted surfaces, made of bronze, copper, or
stainless steel.
(1) For all wetted surfaces, made of bronze, copper, or
stainless steel. (2) Cleaned at the factory for oxygen service and
received on the job site with certification of cleanli
(2) Cleaned at the factory for oxygen service and
received on the job site with certification of cleanliness. (3) Suitable for service at 300 psig (2068 kPa) or above
and able to withstand temperatures of 1000°F
(1) Access shall be provided at the joints for visual
inspection and leak testing. (2) The conduit, cover, or enclosure shall be self-drain ing and not retain groundwater in prolonged contact
(3) Suitable for service at 300 psig (2068 kPa) or above
and able to withstand temperatures of 1000°F (538°C). (4) Provided with brazing extensions to allow brazing
into the pipeline per Section 1309.4.
The conduit, cover, or enclosure shall be self-drain ing and not retain groundwater in prolonged contact with the pipe. [NFPA 99:5.1.10.11.5.3]
(4) Provided with brazing extensions to allow brazing
into the pipeline per Section 1309.4. (5) Supported with pipe hangers and supports as
required for their additional weight. [NFPA
Supported with pipe hangers and supports as
required for their additional weight. [NFPA 99:5.1.10.11.6.3]
288 2019 CALIFORNIA PLUMBING CODE
any other purpose or distributed to any other perso ns HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS or parties.
| TABLE 1310.2.1(2) PRESSURE LOSS FOR MEDICAL AIR |
TABLE 1310.2.1(3) PRESSURE LOSS FOR NITROGEN |
|
|---|---|---|
FLOW RATE (SCFM)1 PRESSURE DROP (psi) PER 100 FEET2 1⁄2 INCH PIPE 3⁄4 INCH PIPE 1 INCH PIPE |
FLOW RATE (SCFM)1 PRESSURE DROP (psi) PER 100 FEET2 1⁄2 INCH PIPE 3⁄4 INCH PIPE 1 INCH PIPE |
mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa
Notes:
Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C). 1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C). Based on the pressure of 55 psig (379 kPa) at 68°F (20°C). 2 Based on the pressure of 55 psig (379 kPa) at 68°F (20°C).
mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa Notes: 1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C). 2 Based on the pressure of 55 psig (379 kPa) at 68°F (20°C).
2019 CALIFORNIA PLUMBING CODE 289
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS any other purpose or distributed to any other persons or parties.
TABLE 1310.2.1(4) PRESSURE LOSS FOR NITROUS OXIDE
TABLE 1310.2.1(5) PRESSURE LOSS FOR OXYGEN
| AND CARBON DIOXIDE | |||
|---|---|---|---|
| FLOW RATE (SCFM)1 |
PRESSURE DROP (psi) PER 100 FEET2 | PRESSURE DROP (psi) PER 100 FEET2 | PRESSURE DROP (psi) PER 100 FEET2 |
| FLOW RATE (SCFM)1 |
1⁄2 INCH PIPE |
3⁄4 INCH PIPE |
1 INCH PIPE |
mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa Notes:
1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C).
| FLOW RATE (SCFM)1 |
PRESSURE DROP (psi) PER 100 FEET2 | ||
|---|---|---|---|
| FLOW RATE (SCFM)1 |
1⁄2 INCH PIPE |
3⁄4 INCH PIPE |
1 INCH PIPE |
mm, 1 foot = 304.8 mm, 1 pound-force per square inch = 6.8947 kPa Notes:
1 Based on pressure of 14.7 psig (101 kPa) at 68°F (20°C).
Notes:
1 Based on pressure of 14.7 psig (101 kPa) at 68°F (20°C).
2 Based on pressure of 55 psig (379 kPa) at 68°F (20 °C).
1 Based on pressure of 14.7 psig (101 kPa) at 68°F (20°C).
2 Based on pressure of 55 psig (379 kPa) at 68°F (20 °C).
Notes:
1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C).
2 Based on the pressure of 55 psig (379 kPa) at 68°F (20°C).
1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C).
2 Based on the pressure of 55 psig (379 kPa) at 68°F (20°C).
290 2019 CALIFORNIA PLUMBING CODE
any other purpose or distributed to any other perso ns HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS or parties.
| FLOW RATE (SCFM)1 |
VACUUM LOSS (inch of mercury) PER 100 FEET FOR COPPER TUBE2 |
||||
|---|---|---|---|---|---|
| FLOW RATE (SCFM)1 |
3⁄4 INCH TUBE |
1 INCH TUBE |
11⁄4 INCH TUBE |
11⁄2 INCH TUBE |
2 INCH TUBE |
| TABLE 1310.2.1(6) PRESSURE LOSS FOR VACUUM |
TABLE 1310.2.1(6) PRESSURE LOSS FOR VACUUM (continued) |
|||
|---|---|---|---|---|
| FLOW RATE (SCFM)1 |
VACUUM LOSS (inch of mercury) PER 100 FEET FOR COPPER TUBE2 3⁄4 INCH TUBE 1 INCH TUBE 11⁄4 INCH TUBE 11⁄2 INCH TUBE |
2 INCH TUBE |
= 304.8 mm, 1 inch of mercury = 3.386 kPa Notes: 1 Based on the pressure of 14.7 psig (101 kPa) at 68°F (20°C). 2 Based on the pressure of 19 inches of mercury gauge vacuum (64 kPa at 68°F (20°C). FLOW RATE (SCFM)1 VACUUM LOSS (inch of mercury) PER 100 FEET FOR COPPER TUBE2 3⁄4 INCH TUBE 1 INCH TUBE 11⁄4 INCH TUBE 11⁄2 INCH TUBE 2 INCH TUBE TABLE 1310.2.1(7) PRESSURE LOSS FOR VACUUM (CATEGORY 3) FLOW RATE (SCFM)1 VACUUM LOSS (inch of mercury) PER 100 FEET FOR PLASTIC TUBE2 3⁄4 INCH TUBE 1 INCH TUBE 11⁄4 INCH TUBE 11⁄2 INCH TUBE 2 INCH TUBE |
| TABLE 1310.2.1(6) PRESSURE LOSS FOR VACUUM |
TABLE 1310.2.1(6) PRESSURE LOSS FOR VACUUM (continued) |
|||
|---|---|---|---|---|
2019 CALIFORNIA PLUMBING CODE 291
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS any other purpose or distributed to any other persons or parties.
HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS any other purpose or distributed to any other persons or parties.
«
TABLE 1310.2.1(7) PRESSURE LOSS FOR VACUUM (CATEGORY 3) (continued)
1310.8.2 Leak Testing. Leak testing shall be accomplished by separately charging and testing each individual piping system. [NFPA 99:5.1.10.11.7.3]
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Ask AI about this code▸Contents — California Plumbing Code (Title 24, Part 5)
- Chapter 1 — GENERAL CODE PROVISIONS
- Chapter 2 — DEFINITIONS
- Chapter 3 — GENERAL REGULATIONS
- Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
- Chapter 5 — WATER HEATERS
- Chapter 6 — WATER SUPPLY AND DISTRIBUTION
- Chapter 7 — SANITARY DRAINAGE
- Chapter 8 — INDIRECT WASTES
- Chapter 9 — VENTS
- Chapter 10 — TRAPS AND INTERCEPTORS
- Chapter 11 — STORM DRAINAGE
- Chapter 12 — FUEL GAS PIPING
▸Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
Overview- 1301.0 General.1301.1 Applicability. This chapter applies to t…
- 1301.2 Where Not Applicable. This chapter does not apply
- 1301.3 Conflict of Requirements. The requirements of
- 1301.4 Terms. Where the terms medical gas or medical support g…
- 1301.5 Where Required. Construction and equipment
- 1301.6 Existing Systems. Only the altered, renovated, or
- 1302.2 Patient Care Spaces. The governing body of the
- 1302.3 Anesthesia. It shall be the responsibility of the gover…
- 1302.4 Wet Procedure Locations. It shall be the responsibility…
- 1303.2 Psychiatric Patient Rooms. Piping and drain
- 1303.3 Locations for Ice Storage. Ice makers or ice storage co…
- 1303.4 Sterilizers and Bedpan Steamers. Sterilizers
- 1303.5 Aspirators. Provisions for aspirators or other watersup…
- 1303.6 Drains. Drains shall be installed on dryers, aftercoole…
- 1303.7 Clinical Sinks. Clinical sinks shall be installed in
- 1303.8 Water Supply for Hospitals. Hospitals shall be
- 1304.0 Medical Gas and Medical Vacuum Piping Sys-
- 1304.2 Manufacturer’s Instructions. The installation of
- 1304.3 Category 2 Piped Medical Gas and MedicalVacuum. Categor…
- 1304.4 Category 3 Piped Medical Gas and MedicalVacuum. Categor…
- 1304.5 Certification of Systems. Certification of medical gas …
- 1304.6 Construction Documents. Before a medical gas
- 1305.2 Minimum Flow Rates. Medical gas and vacuum
- 1305.3 Minimum Station Outlets and Inlets. Station
- 1306.0 Qualifications of Installers.1306.1 General. The instal…
- 1306.2 Brazing. Brazing shall be performed by individuals
- 1306.3 Health Care Organization Personnel. Health
- 1307.2 Examination. Brazers shall be qualified by visual
- 1307.3 Brazing Procedure Specification. The brazing
- 1307.4 Documentation. The brazing procedure qualification reco…
- 1307.5 Procedures. Brazing procedures qualified by a technical…
- 1307.7 Qualifications. Performance qualifications of brazers s…
- 1307.6 Conditions of Acceptance. An employer shall be
- 1308.2 Cleaning. Tubes, valves, fittings, station outlets, and
- 1308.3 Delivery. Each length of tube shall be delivered
- 1308.4 Tubes for Medical Gas Systems. Tubes shall be
- 1308.5 Tubes for Medical Vacuum Systems. Piping for
- 1309.2 Changes in Direction. Positive pressure patient
- 1308.6 Category 3 Systems. Category 3 systems shall
- 1309.3 Medical Vacuum Systems. Vacuum systems shall
- 1309.4 Brazed Joints and Fittings. Fittings shall be
- 1309.5 Tube Ends. Tube ends shall be cut square using a
- 1309.6 Cleaning Procedures. The interior surfaces of
- 1309.7 Brazing Dissimilar Metals. Flux shall only be
- 1309.8 Nitrogen Purge. When brazing, joints shall be continuou…
- 1309.9 Assembling and Heating Brazed Joints. Tube
- 1309.10 Inspection of Brazed Joints. After brazing, the
- 1309.11 Memory Metal Fittings. Memory metal fittings
- 1309.12 Axially Swaged Fittings. Axially swaged, elastic strai…
- 1309.13 Threaded Fittings. Threaded fittings shall meet
- 1309.14 Dielectric Fittings. Dielectric fittings that comply
- 1309.15 Other Types of Fittings. Listed or approved
- 1309.16 Welded Joints. Welded joints for medical gas and
- 1310.2 Required Pipe Sizing. Piping systems shall be
- 1309.17 Welding for Stainless Tube. Stainless tube shall
- 1309.18 Prohibited Joints. The following joints shall be
- 1310.3 Pipe Protection. Piping shall be protected against
- 1310.4 Location of Piping. Piping risers shall be permitted to…
- 1310.5 Pipe Support. Piping shall be supported from the
- 1310.7 Connectors. Hose and flexible connectors, both
- 1310.6 Backfilling and Trenching. The installation procedure f…
- 1310.9 Changes in System Use. Where a positive-pressure medica…
- 1310.10 Breaching or Penetrating Medical Gas Pip-ing. Positive…
- 1310.11 Labeling, Identification and Operating Pres-sure. Colo…
- 1310.8 Prohibited System Interconnections. Two or
- 1311.0 Valves.1311.1 General. New or replacement valves shall …
- 1311.6 Zone Valves. All station outlets/inlets shall be suppli…
- 1311.7 In-Line Shutoff Valves. Optional in-line valves
- 1311.8 Emergency Shutoff Valves. Category 3 systems
- 1311.2 Source Valves. A shutoff valve shall be placed at
- 1311.3 Main Line Valve. A shutoff valve shall be provided
- 1311.4 Riser Valves. Each riser supplied from the main line
- 1311.5 Service Valves. Service valves shall be installed to
- 1311.9 Valves for Future Connections. Future connection valves…
- 1311.10 Identification of Shutoff Valves. Shutoff valves
- 1312.0 Central Supply Systems.1312.1 Permitted Locations for M…
- 1312.2 Materials. Materials used in central supply systems
- 1312.3 Pressure-Relief Valve Requirements. Central
- 1313.0 Medical Air Supply Systems.1313.1 Quality of Medical Ai…
- 1313.3 Category 2 Medical Air Supply Systems. Category 2 syste…
- 1313.2 Medical Air Compressors. Medical air compressors shall …
- 1313.4 Category 3 Systems. Category 3 dental air compressor su…
- 1313.5 Air Sources. Air sources for medical air compressors sh…
- 1313.6 Air Intakes. Compressor intake piping shall be permitte…
- 1314.2 Medical-Surgical Vacuum Sources. Medicalsurgical vacuum…
- 1313.7 Medical Air Receivers. Receivers for medical air
- 1314.3 Vacuum Pumps. Additional pumps shall automatically acti…
- 1314.4 Vacuum Receivers. Receivers for vacuum shall
- 1315.2 Pressure Relief Valves. All pressure relief valves
- 1314.5 Vacuum Source Exhausts. The medical-surgical
- 1315.3 Pressure and Vacuum Indicator Locations. Pressure/vacuu…
- 1316.2 Required Valves. Each station outlet shall consist
- 1316.3 Post Installation. After installation of the piping,
- 1316.4 Identification. Station outlets and inlets shall be
- 1317.0 Warning Systems.1317.1 Category 1. All master, area, an…
- 1317.2 Category 2 Systems. Warning systems associated
- 1317.3 Category 3 Systems. Category 3 warning systems
- 1318.3 Reports. The inspection and testing reports shall be
- 1318.4 Initial Piping Blowdown. Piping in medical gas
- 1318.5 Initial Pressure Tests – Medical Gas and Vac-uum System…
- 1317.4 Components. Functioning of alarm components
- 1318.2 Breached Systems. All systems that are breached
- 1318.6 Initial Pressure Test - Category 3 Copper PipingSystems…
- 1318.7 Initial Leak Test – Category 3 Plastic VacuumPiping Sys…
- 1318.8 Cross-Connection Tests – Medical Gas andVacuum Systems.…
- 1318.9 Standing Pressure Tests – for Positive Pres-sure Medica…
- 1318.10 Standing Pressure Tests – Medical VacuumPiping Systems…
- 1318.11 Standing Pressure Tests – for Category 3
- 1318.12 Medical Gas Piping System Purge Tests. The
- 1318.13 Category 3 Dental Air and Nitrogen Supply
- 1318.14 Operational Pressure Test. Operational pressure tests …
- 1318.15 Medical Gas Concentration Test. After purging
- 1319.2 Certification Tests. Certification tests, verified and
- 1319.3 Report Items. A report that includes the specific
- 1318.16 System Verification. Verification tests shall be
- Chapter 14 — FIRESTOP PROTECTION
- Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
- Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
- Chapter 17 — REFERENCED STANDARDS
- Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
- Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
- Appendix C — ALTERNATE PLUMBING SYSTEMS
- Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
- Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
- Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
- Appendix G — SIZING OF VENTING SYSTEMS
- Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
- Appendix I — INSTALLATION STANDARD FOR PEX TUBING SYSTEMS FOR …
- Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
- Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
- Appendix L — SUSTAINABLE PRACTICES
- Appendix M — PEAK WATER DEMAND CALCULATOR