IPC Question

Discussion in 'IPC Plumbing Code Questions' started by Sylvan, Feb 7, 2020.

  1. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    For showers I always use a 2" waste pipe then I read the IPC code NYC has adopted and I find it confusing


    "SECTION 417 SHOWERS 417.1 Approval. Prefabricated showers and shower compartments shall conform to ASME A112.19.2/CSA B45.1 or CSA B45.5/IAPMO Z124. Shower valves for individual showers shall conform to the requirements of Section 424.3. 417.2 Water supply riser. Water supply risers from the shower valve to the shower head outlet, whether exposed or concealed, shall be attached to the structure. The attachment to the structure shall be made by the use of support devices designed for use with the specific piping material or by fittings anchored with screws. 417.3 Shower waste outlet. Waste outlets serving showers shall be not less than 11 /2 inches (38 mm) in diameter "
     
  2. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Years ago the UPC and IPC agreed to a merger, but when it was put to a vote by the IPC contractors it was rejected. They wanted to keep the IPC the way it was, because joining with the UPC would have required a lot of "upgrading" to the way they were doing things. I call the IPC the "do anything you want to" code, because it seems that if you want to 'cut a corner', the code can be revised to make it legal. Which is why it allows a 1 1/2" shower drain. The UPC ALSO allowed it for about a year and then reverted back to the 2" standard.
     
    Sylvan likes this.
  3. Sponsor

    Sponsor Paid Advertisement

     
    Sylvan likes this.
  4. James Henry

    James Henry In the Trades

    Joined:
    Jul 23, 2019
    Occupation:
    Plumber
    Location:
    Billings, Montana.
    The size of the p-trap depends on the gpm rating of the shower head. Its in the drainage section of the code.
     
  5. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    What if someone changes the shower head to allow for more flow then what?

    A rub can hold water for controlled drainage a shower is not as deep so anything less then 2" is just plain crazy to install

    We use 2" Cast iron for basin waste 2 x 1/2 taped Tee and 2" for kitchen sinks and 2" for tubs as it makes for easier snaking
     
  6. James Henry

    James Henry In the Trades

    Joined:
    Jul 23, 2019
    Occupation:
    Plumber
    Location:
    Billings, Montana.
    I don't write the code.
     
  7. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    Thank you . NYC had an amazing code then the Bloomberg like everything else he get involved in such as politics he screws it up . The 1968 plumbing code was awesome which I still use as it is much better then the IPC
     
Similar Threads: Question
Forum Title Date
IPC Plumbing Code Questions IPC rules for clean-outs and other questions Mar 31, 2020
IPC Plumbing Code Questions Back to back Kitchen sink and lav drain question Jan 22, 2020
IPC Plumbing Code Questions IPC wet vent question Jan 20, 2020
IPC Plumbing Code Questions Moving basement stack & vent question Aug 10, 2019
IPC Plumbing Code Questions Compressed Air Code question, IPC Jul 3, 2010

Share This Page