Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-11-2013, 12:46 PM   #1
Newbie
 
Join Date: Feb 2013
Posts: 12
Share |
Default

Basement bathroom venting question


I bought a house new in 2004. The basement was plummed for a future bathroom. There is a 2" bath drain pipe coming out of the slab in a square tub box, a larger drain out of the slab for the toilet, and there is a drain coming down the wall from the upstairs plumming for the sink. It has a capped off "T" split to tie into. My question is, how can i tell if the tub and toilet are tied into a vent? If I tie the sink into the T split from the upstairs plumming, can i assume the sink will have proper ventilation? Am I going to have to tear up the concrete to vent the toilet and bath? It seems like the builder would have done this before pouring the concrete however I cant ask them because they went out of business of course!

Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 12:54 PM   #2
Member
 
Join Date: Oct 2011
Location: Ohio
Posts: 2,521
Default

Basement bathroom venting question


Quote:
Originally Posted by Jpaulson12 View Post
and there is a drain coming down the wall from the upstairs plumming for the sink. It has a capped off "T" split to tie into. My question is, how can i tell if the tub and toilet are tied into a vent
If there are any fixtures on upper floors draining into this " drain coming down the wall " then you cannot vent the basment bathroom group by tieing into this drain. Unless of course you were to tie in above the flood level of the highest fixture that ties into that stack.

Like in the photo below. As long as there are no fixtures draining into that stack above fitting #5, it is OK to use above fitting #5 as a vent for this group. This group below is obviously a washer and utility sink.
Attached Thumbnails
Basement bathroom venting question-dave88lx-2520from-2520terry-2520forum-25202.jpg  


Last edited by hammerlane; 02-11-2013 at 12:56 PM.
hammerlane is offline   Reply With Quote
Old 02-11-2013, 01:02 PM   #3
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


That makes sense, i guess venting from that line is not an option. I dont understand why the builder wouldnt have tied these drains into a vent line. There are no other vents to tie into in the basement and I am going to have to break up the concrete to get to the toilet and tub drain...can i just make a new vent and just vent it right outside of the basement wall?
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 01:08 PM   #4
Member
 
Join Date: Oct 2011
Location: Ohio
Posts: 2,521
Default

Basement bathroom venting question


SO the only fixture draining into this "drain coming down the wall from the upstairs" as you referred to it---- is a sink?
hammerlane is offline   Reply With Quote
Old 02-11-2013, 01:14 PM   #5
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


It looks like it comes from the kitchen so I assume the sink and the dishwasher...could I just use air admittence valves, not taking into consideration my local code
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 01:44 PM   #6
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


Upon further inspection...i beleive the 2" pipe coming down from upstairs is a drain pipe, all other drains from upstairs are draining into a larger drain pipe elsewhere in the basement. Is it logical to think the builder tied the toilet and tub into this vent beneath the slab?
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 01:46 PM   #7
Roofmaster
 
Join Date: Oct 2012
Location: Maryland
Posts: 3,406
Default

Basement bathroom venting question


Are you sure the 2 going up isnt just a vent? Why would they rough it in without a vent. Have you run the water in the sink or scoped out the 2?
__________________
" A lot of men build things, and a lot of things fall down "

jagans is offline   Reply With Quote
Old 02-11-2013, 01:46 PM   #8
call me E
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: Idaho
Posts: 6,188
Default

Basement bathroom venting question


What size is the the pipe from above?
Uncap the tee and run water upstairs. If you don't see any water coming down the pipe then it may be the vent for your basement fixtures- it may be revented upstairs already.
A picture of your layout would help.
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is online now   Reply With Quote
Old 02-11-2013, 02:03 PM   #9
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


Uncapped, no water! It is a 1.5", at the T it then is a 2 inch that goes into the slab....there is also a junction near the slab with a cap...is that to tie a sink drain into? I attched a pic! Thanks for your help!

Name:  ForumRunner_20130211_150142.jpg
Views: 53
Size:  16.7 KB
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 02:15 PM   #10
call me E
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: Idaho
Posts: 6,188
Default

Basement bathroom venting question


The capped outlet is your bathroom sink. The tee at the base is a clean out.
If this was in my area, I'd be looking for another vent pipe in the floor.
A toilet should be vented with 2". What you pictured is 1.5"
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is online now   Reply With Quote
Old 02-11-2013, 02:18 PM   #11
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


Hmm...i looked and there is no other pipe coming up...is it possible they tied the toilet and tub into the 1.5" vent?
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 02:21 PM   #12
call me E
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: Idaho
Posts: 6,188
Default

Basement bathroom venting question


Quote:
Originally Posted by Jpaulson12 View Post
Hmm...i looked and there is no other pipe coming up...is it possible they tied the toilet and tub into the 1.5" vent?
yes, just about anything is possible
Some areas have different ways to vent toilets.
Have you dug into the floor box to see whats down there?
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is online now   Reply With Quote
Old 02-11-2013, 02:24 PM   #13
Newbie
 
Join Date: Feb 2013
Posts: 12
Default

Basement bathroom venting question


Not yet...will do though! This forum is great....what is the purpose for that tub box anyways? Is it just easier to move the tub drain around if needed??
Jpaulson12 is offline   Reply With Quote
Old 02-11-2013, 03:29 PM   #14
Member
 
Join Date: Oct 2011
Location: Ohio
Posts: 2,521
Default

Basement bathroom venting question


deleted

Last edited by hammerlane; 02-11-2013 at 03:32 PM.
hammerlane is offline   Reply With Quote
Old 02-11-2013, 03:32 PM   #15
Member
 
Join Date: Oct 2011
Location: Ohio
Posts: 2,521
Default

Basement bathroom venting question


Quote:
Originally Posted by Jpaulson12 View Post
Uncapped, no water! It is a 1.5", at the T it then is a 2 inch that goes into the slab.
So now you are going against what you said in the 1st, 5th and 6th post and are positive no other fixtures are draining into this??

hammerlane is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
basement bathroom venting marketbridge Plumbing 4 09-05-2012 01:47 PM
venting a bathroom sink in a basement josephmartins Plumbing 3 08-02-2012 10:35 PM
Venting basement bathroom with lift station. jamesdinger Plumbing 6 05-05-2012 10:50 AM
Venting basement bathroom?? Bahuffma Plumbing 5 07-05-2011 06:49 PM
Venting questions in new basement bathroom virtualo Plumbing 14 04-28-2009 10:17 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.