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Old 03-27-2013, 07:00 PM   #1
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Acceptable Tub Drain Configuration?


I've got an issue with my tub drain. The pipe comes out exactly where my new tub drain needs to be so i don't have enough room to play with it. I would normally do a simple 90degree down into a U joint to create the P-trap. However, I can't do that due to the current configuration. Instead, I have to wrap away 90degrees and then down into a U joint created by 2 90degree fittings. I've attached a few pictures.

Is this an acceptable configuration? Any issues with it?

Thanks!
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Old 03-27-2013, 07:07 PM   #2
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Acceptable Tub Drain Configuration?


Try a real solvent weld P Trap..... What you are making if inspected should get turned down. Depth of trap is why.

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Old 03-27-2013, 07:07 PM   #3
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Acceptable Tub Drain Configuration?


Code says a trap seal shall not be more then 4". Yours is deeper then that- will it work probably.
But instead of the 90 on the waste- could a 45 work and allow a normal trap?
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Old 03-27-2013, 07:11 PM   #4
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Acceptable Tub Drain Configuration?


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Code says a trap seal shall not be more then 4". Yours is deeper then that- will it work probably.
But instead of the 90 on the waste- could a 45 work and allow a normal trap?
Oh wait... do you mean 45degree on the waste? yeah, that won't work. I'll take pictures of the setup. As for "trap seal shall not be more than 4"... what does that mean? The 2 90degree fittings creating the U cannot be wider than 4"? thanks!
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Old 03-27-2013, 07:15 PM   #5
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Try a real solvent weld P Trap..... What you are making if inspected should get turned down. Depth of trap is why.
Yeah, these are all solvent parts. It's getting installed in a crawlspace that's above a finished ceiling. I don't want to ruin my ceiling by cutting a hole from below later on due to leaks. I'm hoping i can get this installed and have it sealed good and tight.

As for depth of trap... yeah, it's definitely more than 4". Any other thoughts? I'll post pics of the trapped space in 5 mins.

Just researched the depth of trap... 2-4". DAmn. Trying your idea of 45degree now. hopefully i can get it less than 4". Any thoughts on functionality? Will it work even with a deep trap?

Last edited by netdude; 03-27-2013 at 07:22 PM.
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Old 03-27-2013, 07:39 PM   #6
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Acceptable Tub Drain Configuration?


Alrighty... i measured the water seal... 6" yikes!

Also, I've attached pics of the current situation. The red is red guard. I'm trying to seal the darn area. I'm looking for any trap options you may have. I'm all out of ideas.

I tried a 45degree and it doesnt work. The best I could do was 90degree to 66degree to U trap. This configuration was about 5inches of water seal. Thoughts?

Thanks!
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Old 03-27-2013, 07:50 PM   #7
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Acceptable Tub Drain Configuration?


Hmmm... just reading up on traps... the requirement is that the water seal is between 2-4". The original configuration I have from above is about 4.5" for the water seal. Is that acceptable? Will it fail? Thank you
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Old 03-27-2013, 07:51 PM   #8
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Acceptable Tub Drain Configuration?


Get a solvent weld trap. with a U bend.
open up your floor a bit and move the drain get all that wood out of your way....
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Old 03-27-2013, 07:59 PM   #9
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Get a solvent weld trap. with a U bend.
open up your floor a bit and move the drain get all that wood out of your way....
yeah, that damn wood... it's bracing something. I'm not exactly sure and didn't want to mess with it. Some idiot cut a bunch of it and someone came by to nail in support. It's been standing and I didn't want to mess with it. I cannot cut any further on the flooring to gain access. The only way to get access would be to go from my 1st level through the finished ceiling. No dice there. I'm so angry about that. The ceiling is finished so I don't want to ruin it.

Anyhow, reading further, it looks like my water seal is ~4.5 inches which is just outside of 2-4" requirement. These are all solvent weld fittings and yes, a solvent weld trap. The reason I used a long 90 and short 90 is for reach. I needed a "long" U trap which I could not find at the orange box store.
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Old 03-27-2013, 08:12 PM   #10
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Acceptable Tub Drain Configuration?


Why cant you cut the floor at the top of your picture? Isn't it under the tub?
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Old 03-27-2013, 08:32 PM   #11
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Why cant you cut the floor at the top of your picture? Isn't it under the tub?
I can't cut the flooring because it's all joists. Someone has already compromised the joists. I don't want to do further damage. Cutting the flooring does nothing... there's a joist blocking access.
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Old 03-28-2013, 02:29 PM   #12
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Acceptable Tub Drain Configuration?


I was just thinking of moving the drain. so it wouldn't be smack dab at center of your tub.
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Old 03-28-2013, 06:30 PM   #13
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Acceptable Tub Drain Configuration?


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I was just thinking of moving the drain. so it wouldn't be smack dab at center of your tub.
I'm not sure what you mean by that. I'm pretty much boxed in. I wish there was another way of putting in a p-trap, but it looks like I'm pretty much stuck at this point. Spoke to a couple guys at the local plumbing store here (not orange box) and they suggested this option attached. Said it won't pass code (due to the depth of water seal (~5.5 inches) but probably would drain just fine. Any thoughts before I weld this?

Thanks!
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Old 03-28-2013, 07:00 PM   #14
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Acceptable Tub Drain Configuration?


I'll preface with I'm not a pro. Based on your picture above with the measuring tape, I believe you are measuring the depth of seal incorrectly. EPlumber or Ghostmaker, could you specify the measurement method.
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Old 03-28-2013, 07:20 PM   #15
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Acceptable Tub Drain Configuration?


Is there any way you can put the 45 on the waste arm instead of the 90?

Trap seal defined
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