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  1. #1
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    Default I know this p trap will work but is it acceptable.

    I know this p trap will work but is it acceptable or will it not function properly.

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  2. #2
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    Mar 2007
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    Default Re: I know this p trap will work but is it acceptable.

    Trap should be within 24 vertical and 30 horizontal inches of the appliance it is serving. It looks like this one is in the basement/crawlspace and is likely more than 24 inches away. Too much vertical causes the water to fall to fast and either remove water from the trap or not scour properly due to water speed.

    May work, but probably not to code.

    - - - Updated - - -

    Trap should be within 24 vertical and 30 horizontal inches of the appliance it is serving. It looks like this one is in the basement/crawlspace and is likely more than 24 inches away. Too much vertical causes the water to fall to fast and either remove water from the trap or not scour properly due to water speed.

    May work, but probably not to code.

    "The Code is not a peak to reach but a foundation to build from."

  3. #3
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    Default Re: I know this p trap will work but is it acceptable.

    Quote Originally Posted by Bruce Ramsey View Post
    Trap should be within 24 vertical and 30 horizontal inches of the appliance it is serving. It looks like this one is in the basement/crawlspace and is likely more than 24 inches away. Too much vertical causes the water to fall to fast and either remove water from the trap or not scour properly due to water speed.

    May work, but probably not to code.

    - - - Updated - - -

    Trap should be within 24 vertical and 30 horizontal inches of the appliance it is serving. It looks like this one is in the basement/crawlspace and is likely more than 24 inches away. Too much vertical causes the water to fall to fast and either remove water from the trap or not scour properly due to water speed.

    May work, but probably not to code.
    It's good on the distance, the makeup from components rather than a pre made trap was really my questions and that it had more of a horizontal run rather than a quick "p" run on the bottom.


  4. #4
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    Default Re: I know this p trap will work but is it acceptable.

    Quote Originally Posted by ren ramsey View Post
    It's good on the distance, the makeup from components rather than a pre made trap was really my questions and that it had more of a horizontal run rather than a quick "p" run on the bottom.
    From the IRC:
    - P3201.1 Design of traps. - - Traps shall be of standard design, shall have smooth uniform internal waterways, shall be self-cleaning and shall not have interior partitions except where integral with the fixture. Traps shall be constructed of lead, cast iron, cast or drawn brass or approved plastic. Tubular brass traps shall be not less than No. 20 gage (0.8 mm) thickness. Solid connections, slip joints and couplings shall be permitted to be used on the trap inlet, trap outlet, or within the trap seal. Slip joints shall be accessible.
    - P3201.2 Trap seals and trap seal protection.
    - - Traps shall have a liquid seal not less than 2 inches (51 mm) and not more than 4 inches (102 mm). Traps for floor drains shall be fitted with a trap primer or shall be of the deep seal design. Trap seal primer valves shall connect to the trap at a point above the level of the trap seal.

    The trap may not be a precise "standard design" but does a trap have to meet a precise exact standard? Probably not. But that elongated bottom design likely does not meet the "standard design" requirement.

    I also doubt that it has "shall have smooth uniform internal waterways" - but it may have that.

    Then we get to the trap seal, which must be at least 2" but not greater than 4", and (presuming that pipe is 1-1/2") that trap looks like it may be pushing the 4" limitation.

    Another question (which is not about the trap itself) is the trap arm length - how far back is the vent?

    Getting back to the "standard design" - I haven't found anything which shows an acceptable trap with the elongated bottom you are asking about, not even here:
    - https://www.google.com/search?q=stan...Q&ved=0CB0QsAQ

    All approved traps I have seen have a smooth turn into, down and around, and back up (except for field assembled a/c condensate traps, but they are different animals anyway).

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
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    Default Re: I know this p trap will work but is it acceptable.

    Thanks' guys, that should cover it.


  6. #6
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    Default Re: I know this p trap will work but is it acceptable.

    The field constructed trap would like have been okay if they had used the proper parts.

    Instead of using two sweeps with a short piece of pipe between them, use a street sweep into a standard sweep (that would have eliminated the "long" bottom) and likely have left the shape of the trap like that of a standard trap.

    Then all they would have had to do was get the trap seal depth correct.

    They may have been able to do that by using a street sweep (down from tailpiece and turns horizontal) into a street sweep (horizontal and turns up) into a street sweep (up and turns horizontal) to the trap arm (with a coupling to the trap arm). That probably would have worked out okay.

    Think of it as using the three of these long street sweeps: Drain & Waste Elbows, PVC, Schedule DWV by MUELLER INDUSTRIES - PVC and CPVC Pipe Fittings at Zoro (3rd fitting from left if it doesn't automatically show it)

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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