Description

• Projects in this scope area may include installing new sewage ejector pumps, piping for conveying sewage and waste within a building and to the street, and piping for venting waste and odors. The full, detailed scope of work for this project including any additional work areas will be updated here after alignment with project stakeholders through scoping and design activities. 

Baseline

• Extensions of public sanitary or combined sewers shall be made per the regulations of the NYC Department of Environmental Protection (DEP).
• All abandoned building connections to public sewers shall require plug permits from the NYC DEP and shall be securely sealed at a point inside the curb line and as close thereto as practicable.
• All waste and vent pipe materials should conform to the NYC Plumbing Code.
• Trap seals of emergency floor drain traps and trap seals of floor drains located in utility rooms shall be protected by one of the methods outlined in the NYC Plumbing Code.
• Fresh Air Inlets
  • Every sanitary or combined building drain shall be provided with a fresh air inlet pipe connected to the building drain immediately upstream from and within 4 feet of the building trap.
  • The size of the fresh air inlet pipe shall be at least one-half the diameter of the building drain at the point of connection, but not less than 3 inches.
  • Fresh air inlets located in flood hazard areas shall be located above the design flood elevation per Section G304 of Appendix G of the NYC Building Code.
  • Vent connections to horizontal drains and the fresh air inlet pipe shall be extended to the outer air and shall be terminated in an open end at least 6 inches above grade. The open end shall be protected by a perforated metal plate permanently fixed in the mouth or by a return bend with its unprotected open end at least 6 inches above grade and located inside the street line.
• Where fixtures, floor drains, or area drains are subject to overflow as the result of backwater from the public sewer system, accessible backwater valves shall be installed in the fixture drainpipe from such fixture.

Strategies

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Last Updated on January 10, 2026 at 8:00 am

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Specifications

22 05 17 - Sleeves and Sleeve Seals for Plumbing Piping

22 11 00 - Piping Material

22 13 16 - Sanitary Waste and Vent Piping

22 13 19 - Sanitary Waste Piping Specialties