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• P2904.4.2

  System Design Flow Rate

  • Design flow is one head's flow in one-head rooms, twice the largest in rooms with two or more, the worst room governing; rooms may be split by 8 in lintels.

  International Residential Code, 2024 · Chapter 29, Water Supply and DistributionRead the full text (opens UpCodes in a new tab)

• P2709

  Shower Receptors

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

• P2717.2

  Dishwasher Waste Connection

  • Dishwasher drains go to a wye on the sink tailpiece, the disposer inlet, or through an air break to a standpipe, with the hose looped up and fastened under the counter.

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

• P2711.3

  Lavatory Waste Outlets

  • Lavatory outlets are at least 1-1/4 in with a strainer, stopper or crossbar.

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

• P2704

  Slip-Joint Connections

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

• P2912.15.6

  Inspection and Testing of Backflow Prevention Assemblies

  • Backflow preventers and backwater valves are tested per P2503.8.

  International Residential Code, 2024 · Chapter 29, Water Supply and DistributionRead the full text (opens UpCodes in a new tab)

• P3108

  Wet Venting

  International Residential Code, 2024 · Chapter 31, VentsRead the full text (opens UpCodes in a new tab)

• P2717

  Dishwashing Machines

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.