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2" Quarter Bend After P Trap

 
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Old 06-26-2019, 01:50 PM   #1
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2" Quarter Bend After P Trap


Hey guys, I've a question about this design: P trap + 2" quarter bend going down + 2" quarter bend connecting to the starter fitting (see pictures attached). Is this ok by code?
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2" Quarter Bend after P Trap-screenshot_4.png   2" Quarter Bend after P Trap-screenshot_5.png  
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Old 06-26-2019, 02:10 PM   #2
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Re: 2" Quarter Bend After P Trap


IIRC it has to be a long sweep or a wye + 45 to lay on it's back like that (by code). However I doubt you would have a problem with just a sink connected. A wye + 45 would be nice as you could add a cleanout. Disclaimer: not a plumber by trade.

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Old 06-26-2019, 02:23 PM   #3
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Re: 2" Quarter Bend After P Trap


Hi jhark123, thanks for replying. IPC (Table 706.3) allows me to have the quarter bend for drains up to 2". This is actually a bathtub. I am not sure about having those two quarter bends right after the P Trap. Here is a plan for clarification.
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Old 06-26-2019, 03:18 PM   #4
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Re: 2" Quarter Bend After P Trap


Is there a space constriction that is keeping you from using a long sweep?
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Old 06-26-2019, 03:28 PM   #5
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Re: 2" Quarter Bend After P Trap


yes
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Old 06-26-2019, 04:40 PM   #6
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Re: 2" Quarter Bend After P Trap


Sorry, I can't make heads or tails out of that.......thing......you drew.

If you're talking about coming out of a sink and going down the wall, you have to use a San-Tee. Otherwise, you'll suction the trap.
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Old 06-26-2019, 04:42 PM   #7
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Re: 2" Quarter Bend After P Trap


And what is a "starter fitting"? I've never heard of that.
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Old 06-26-2019, 04:50 PM   #8
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Re: 2" Quarter Bend After P Trap


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
And what is a "starter fitting"? I've never heard of that.
fyi
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2" Quarter Bend after P Trap-screenshot_7.png   2" Quarter Bend after P Trap-screenshot_8.png   2" Quarter Bend after P Trap-screenshot_9.png  
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Old 06-26-2019, 07:23 PM   #9
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Re: 2" Quarter Bend After P Trap


Thanks. Never heard of that.

In the pic that I'm attaching, that would be a code violation where I'm at.

Do you see where the horizontal drain connects to the vertical waste stack? That can't be lower than the trap weir. Hence the use of a san-tee in that spot.
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Old 06-26-2019, 08:06 PM   #10
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Re: 2" Quarter Bend After P Trap


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
Thanks. Never heard of that.

In the pic that I'm attaching, that would be a code violation where I'm at.

Do you see where the horizontal drain connects to the vertical waste stack? That can't be lower than the trap weir. Hence the use of a san-tee in that spot.
The manufactures have some other versions of this fitting to meet other's states codes.
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Old 06-26-2019, 09:25 PM   #11
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Re: 2" Quarter Bend After P Trap


Do I look like a CAD professor???
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Old 06-26-2019, 11:23 PM   #12
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Re: 2" Quarter Bend After P Trap


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Do I look like a CAD professor???
I don’t remember asking CAD questions. Or maybe I should tell you the difference between CAD and IPC... never mind.
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Old 06-26-2019, 11:32 PM   #13
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Re: 2" Quarter Bend After P Trap


Trap arm length needs to be 1.5 times the diameter of the pipe used and the vent take off must be above the trap weir. I would say what you have is a no go...
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Old 06-27-2019, 09:22 PM   #14
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Re: 2" Quarter Bend After P Trap


Quote:
Originally Posted by superseal View Post
Trap arm length needs to be 1.5 times the diameter of the pipe used and the vent take off must be above the trap weir. I would say what you have is a no go...
The starter fitting is individually vented, so there is no possibility of a s-trap, which is the reason for that code, there is no possibility of the trap being siphoned.
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Old 06-29-2019, 12:38 PM   #15
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Re: 2" Quarter Bend After P Trap


UPC - 1002.3 A trap arm shall be permitted to change direction without the use of a cleanout when such change of direction does not exceed 90 degrees (1.6 rad). All horizontal changes in direction of trap arms shall comply with Section 706.3.

Exception: For trap arms three (3) inches (80 mm) in diameter and larger, the change of direction shall not exceed 135 degrees (2.36 rad) without the use of a cleanout.

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