Distant trap

[elgato]

I found a kitchen sink with no trap. Looked in the basement an found one on the sink drain line. But, there is a straight run of almost 8'. This seems wrong, but I can't find a reference for the maximum allowed distance between a drain and it's trap. Can someone help me out? Thanks.

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[Jeremy]

I found a kitchen sink with no trap. Looked in the basement an found one on the sink drain line. But, there is a straight run of almost 8'. This seems wrong, but I can't find a reference for the maximum allowed distance between a drain and it's trap. Can someone help me out? Thanks.

Download Attachment: Blades 047.jpg

863.91 KB

The trap must be in the same room as the fixture. The only exception I know of is the trap for a wash machine, which can be below the floor.(of course showers and tubs)

[Jeremy]

I think the reference you are looking for is IRC P3201.6

[Jerry Lozier]

I couldn't get you pic to open, there may be exceptions

Rule of thumb I use is ,

trap in same room

vertical distance from fixture outlet to trap weir is max of 24" so velocity won't siphon trap

Horiz run should not be greater than 30" cc, on longer runs flow may not have enough velocity to drain

[KGarten]

IPC section 1002.1 says what Jerry said about 24" max vertical distance from fixture outlet to trap weir. The commentary of the code mentions the self siphoning by velocity and also bacteria growth on longer lengths of pipe causing odors.

[hausdok]

Jerry,

Save your picture as a JPEG file, reduce it so that it's less than 200 Mb and then rename it so there aren't any gaps or special symbols in the name. Then post it using the "post a visible picture" choice below the composition box.

ONE TEAM - ONE FIGHT!!!

Mike

[Jim Katen]

The trap must be in the same room as the fixture. The only exception I know of is the trap for a wash machine, which can be below the floor.(of course showers and tubs)

What about bathtubs & showers?

- Jim Katen, Oregon

[Jeremy]

The trap must be in the same room as the fixture. The only exception I know of is the trap for a wash machine, which can be below the floor.(of course showers and tubs)

What about bathtubs & showers?

- Jim Katen, Oregon

Clarification of "(of course showers and tubs)": Traps for tub and shower fixtures are almost always under the floor, defying the rule of thumb that the trap should be in the same room. Distance restrictions laid out in IRC P3201.6 would still apply.

[elgato]

Thanks for the advice on posting images, as well as the excellent references on my original question.