Weird plumbing trap

[msteger]

Ran into this plumbing trap under a pedestal sink today. Due to the small opening in the rear of the pedestal, whomever installed this one had little room to work since the drain line comes up through the floor and not out into the wall. Not sure what to say about it other than it looks wrong. I would guess that the corregated section will probably be more likely to allow for clogs. Never saw one like this one. What are your thoughts?

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[kurt]

P3002.3.1 sez drainage fittings should be smooth walled and the same diameter as the piping served. It also sez no ledges, shoulders, or reductions that would retard or obstruct drainage flow. All those ridges are the definition of ledges and shoulders that retard drainage.

Commit that one to memory, as it allows us to condemn those dipsquat flex fittings. Yes, they clog. It's legal to mfg. and sell them, it's just not legal to install them.

Looks like an S trap (goes into the floor). Table 3105.1 shows 1 1/4" pipe (standard lav) needs to be within 5' of the vent. If the trap is >5', I'd call it and incorrect, even though it might still work OK.

I think I got those right. You IRC gurus agree?

(Chicago's got it's own stuff......doesn't apply to youse outlanders.....)

[hmiller]

Ya, looks sloppy............... "Uncle Bob" strikes again......

Example of the large home improvement center slogan; "You can do it, and we can help"

[msteger]

My thoughts exactly. Thanks guys. Gotta love what some people try to do and pass off as DIY work.

[Erby]

Y'all ever been in one of them trick gravity house.

This "S trap" is under a double kitchen sink.

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AND it really is an "S"!

[msteger]

Nice "S" trap.. it won't trap water but may trap a clog.

[asihi]

Y'all ever been in one of them trick gravity house.

This "S" trap is under a double kitchen sink.

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AND it really is an "S"!

I'm not sure I'd even call it a trap. At least a typical "S" trap will hold water. Not this one.

[Kyle Kubs]

Ok, if we're doing the Larry, Mo & Curly plumbing work contest, I just had the prizewinner yesterday.

Never would have expected to open this vanity

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And find this masterful work of art.

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Maybe that's what it was, some sort of "abstract engineering".

Even better, this same handy homeowner did tons of electrical modification/additions including the power to the hot tub and swimming pool.

[msteger]

Funny thing.. I saw another corrugated drain pipe yesterday under a kitchen sink... used the same verbiage I used the day before.. almost word for word from Kurt's post.

[boilerworks]

Wow a whole new degree of ugly.