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Old 10-31-2010, 12:36 AM   #1
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Proper drain and vent help needed


Hello,
I'm renovating my 2nd floor bathroom and taking out all the old plumbing and redoing everything. I wanted to make sure i am doing it correctly and using proper tees and wyes etc. Please see pic below. Main pipe to septic is 4", which goes to 3" in bsmt, then up to 2nd floor bath. Sink on main level drains directly to 4" and has no vent. See in pic where 3" comes up from bsmt, I need to know proper way to tie in wc, bath, and 2 sinks, with vent and drain. I'm hoping to make 90 from 3" coming from bsmt, feed the 3 fixtures and then switch to 2" after toilet and up outside wall, then 45 up to existing hole in roof. Is this feasible, and how? I'm in ontario, canada. Thanks for the help.
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Old 10-31-2010, 04:56 AM   #2
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Proper drain and vent help needed


Sounds good, do 'er!

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Old 10-31-2010, 08:55 AM   #3
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Proper drain and vent help needed


any other advice besides do er?
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Old 10-31-2010, 10:30 AM   #4
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Proper drain and vent help needed


Quote:
Originally Posted by papisox View Post
any other advice besides do er?
Your opening post was very general in nature. Hard to show you how to plumb a house with out seeing it.
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Old 10-31-2010, 03:46 PM   #5
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Proper drain and vent help needed


What other info do u need? I included pic and what I needed to do. Please let me know And I will post it. Thanks for helping, I appreciate it
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Old 11-01-2010, 06:30 PM   #6
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Proper drain and vent help needed


i attached new drawing, is that workable? Thanks
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Old 11-01-2010, 06:37 PM   #7
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Proper drain and vent help needed


all of the fixtures must vent thru the roof. you can use the one pipe, but make sure they all connect and are sized properly
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Old 11-01-2010, 06:48 PM   #8
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Proper drain and vent help needed


it was my understanding that the vent had to be downstream of toilet, not upstream? And also I thought CDN plumbing code says no fixtures can drain into closet bend which they would be?
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Old 11-01-2010, 08:06 PM   #9
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Proper drain and vent help needed


Your drawing isn't even remotely workable. Does Time/Life still make books for homeownwers? If you're this out of whack with your design you better bite the bullet and at least hire somebody for a consultation.
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Old 11-01-2010, 08:22 PM   #10
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Proper drain and vent help needed


I'm not a plumber and have not done one of these drawings before, I thought that was the whole point of this site, to HELP people. Rather that come into every thread and Sh_t on people because you're an actual plumber. You've never needed help before?
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Old 11-01-2010, 08:23 PM   #11
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Proper drain and vent help needed


I also didn't "design" this, its how the last guy did it. I'm trying to figure a way to vent it properly, thats why i'm here.
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Old 11-01-2010, 09:03 PM   #12
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Proper drain and vent help needed


Nobody is dumping on you. You just happen to have a very large DIY project and it would take me several hrs of typing to explain it to you.
What you need to do is take some time and learn a little about plumbing basics.
Also, I could walk you through your project, step by step. But your inspector would prolly fail it because I work under UPC. not what you use up north. Your best bet is to hire a consultant. Then ask us your specific questions when your stumped.
Good luck
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Old 11-02-2010, 10:07 AM   #13
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Proper drain and vent help needed


Gee, is that any way to ask for help?
You wanna make this work? OK. First, above the p-trap for the basement sink, you have to have a vent pipe that runs upstairs and connects to the vent that goes through the roof. That connection should be no less than 42" above the floor, above what we call the "flood level rim" of the fixtures connected to that vent.
Secondly, the 3" 90 that goes to the fixtures on the second floor should be a "T" fitting. The 3rd leg of that T will be a vent, and it'll have to connect to that other vent pipe, again above flood level rim.
3rdly, the second floor sink sould be vented as well, and piped the same way as the other two new vent pipes.
This fix isn't 100% to code, but will work well for decades to come.
For it to be completely to code you might as well gut the whole place and start over.
Normally somebody calls me an a##hole, I wouldn't give them plumbing advice for all the tea in China. But today I'll make an exception.
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Old 11-02-2010, 10:34 AM   #14
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Proper drain and vent help needed


I did rip it all out. Right now all that is there is the 3" coming from basement. Is the vent upstream of toilet ok? I was going to put a tee on the 3" in floor then vent sink and bath to it at about 6' up. Just didn't know how to vent the toilet, and how to properly drain sink and bath as I thought they couldnt drain into closet bend? Appreciate the help
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Old 11-02-2010, 10:42 AM   #15
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If you use a wye fitting on the horizontal drain from the toilet (3 x 2) and connect the sink and tub to that, you can eliminate the other vent past the toilet. The sink vent must still eventually go through the roof, though. Now what you have is the sink "wet venting" the tub and toilet.

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