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// CODE SNIPPET

1310.6 Backfilling and Trenching

California Plumbing Code 2016 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching
JUMP TO FULL CODE CHAPTER
The installation procedure for underground piping shall protect the piping from physical damage while being backfilled. [NFPA 99:5.1.10.11.5.2, 5.3.6.13.2]

1310.6.1 Conduit, Cover, or Enclosure

Underground piping shall comply with the following where protected by a conduit, cover, or other enclosure:
  1. Access shall be provided at the joints for visual inspection and leak testing.
  2. The conduit, cover, or enclosure shall be self-draining and not retain groundwater in prolonged contact with the pipe. [NFPA 99:5.1.10.11.5.3, 5.3.6.13.3]

1310.6.2 Excessive Stresses

Buried piping that will be subject to surface loads shall be buried at a depth that will protect the piping or its enclosure from excessive stresses. [NFPA 99:5.1.10.11.5.4, 5.3.6.13.4]

1310.6.3 Minimum Backfill

The minimum backfilled cover above the top of the piping or its enclosure for buried piping outside of buildings shall be 36 inches (914 mm), except that the minimum cover shall be permitted to be reduced to 18 inches (457 mm) where there is no potential for damage from surface loads or surface conditions. [NFPA 99:5.1.10.11.5.5, 5.3.6.13.5]

1310.6.4 Trenches

Trenches shall be excavated so that the piping or its enclosure has firm, substantially continuous bearing on the bottom of the trench. [NFPA 99:5.1.10.11.5.6, 5.3.6.13.6]

1310.6.5 Composition of Backfill

Backfill shall be clean, free from material that is capable of damaging the pipe, and compacted. [NFPA 99:5.1.10.11.5.7, 5.3.6.13.7]

1310.6.6 Marker

A continuous warning tape or marker placed immediately above the piping or its enclosure shall clearly identify the pipeline by specific name. [NFPA 99:5.1.10.11.5.8, 5.3.6.13.8]

1310.6.7 Warning

A continuous warning means shall be provided above the pipeline at approximately one-half the depth of burial. [NFPA 99:5.1.10.11.5.9, 5.3.6.13.9]

1310.6.8 Wall Sleeve

Where underground piping is installed through a wall sleeve, the outdoor end of the sleeve shall be sealed watertight to prevent the entrance of groundwater into the building. [NFPA 99:5.1.10.11.5.10, 5.3.6.13.10]

Related Code Sections


1310.6 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Backfilling and Trenching
The installation procedure for underground piping shall protect the piping from physical damage while being backfilled. [NFPA 99:5.1.10.11.5.2 ...
California Plumbing Code 2016 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching
1310.6 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Backfilling and Trenching
The installation procedure for underground piping shall protect the piping from physical damage while being backfilled. [NFPA 99:5.1.10.11.5 .2 ...
California Plumbing Code 2019 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching
1310.6.5 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Composition of Backfill
Backfill shall be clean, free from material that is capable of damaging the pipe, and compacted. [NFPA 99:5.1.10.11.5.7, 5.3.6.13.7] ...
California Plumbing Code 2016 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching > 1310.6.5 Composition of Backfill
1310.6.1 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Conduit, Cover, or Enclosure
If underground piping is protected by a conduit, cover, or other enclosure, the following requirements shall be met: Access shall be provided ...
California Plumbing Code 2019 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching > 1310.6.1 Conduit, Cover, or Enclosure
1310.6.1 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Conduit, Cover, or Enclosure
Underground piping shall comply with the following where protected by a conduit, cover, or other enclosure: Access shall be provided at the joints ...
California Plumbing Code 2016 > 13 Health Care Facilities and Medical Gas and Medical Vacuum Systems > 1310.0 Installation of Piping > 1310.6 Backfilling and Trenching > 1310.6.1 Conduit, Cover, or Enclosure
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