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 03-06-2008, 11:13 PM   #1
Newbie
 
Join Date: Mar 2008
Posts: 15
Share |
Default

Adding laundry sink to washer drain - VENT?


The builder on my new house got cheap on me and didn't install a laundry tub in the laundry room. I've checked under the house and found that they did run water for the sink but didn't bother to install valves in the wall or a drain stub. The water hookups are easy enough, but the drain has me wondering.

The cleanout for the washer drain pokes through the wall and tells me that there is a vertical drain/vent in the perfect spot for the laundry sink. It would be most simple to just tee into this line below the cleanout, but I'm not sure if it will be vented properly (and up to code).

Once I tear away the drywall, I'm guessing that I will find what you see in blue in my first picture.

My question is, can I just tee into the drain/vent stack with the sink, or do I need to add a vent loop. If I need a vent I'd like to do Option #1 because if I were to tee into the drain/vent stack, I wouldn't have room for a tee to go up to the new vent. (the red section is actually coming out of the wall towards you...)

I live in Oregon and don't know what the code says about venting. I'd like to know what I need to do before I get my permits and stuff.

Thanks in advance!






Last edited by juengl4; 03-07-2008 at 08:23 AM.
juengl4 is offline   Reply With Quote
Old 03-07-2008, 05:46 AM   #2
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 3,929
Default

Adding laundry sink to washer drain - VENT?


All of your options are non code compliant. By bringing the sink in above the washer drain you have created a "wet vent" at the washer.(a nono) Bring the sink draibn in at the same level as the washer drain and replace the tee fitting with a cross fititng with an internal baffle. No additional vent is neccessary. If you can't do that you must bring your sink drain back to the main line (under a slab I guess by your drawing). In that case you must extent the vent for the sink back to the vent line above the washer drain.

rjniles is online now   Reply With Quote
Old 03-07-2008, 08:46 AM   #3
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Default

Adding laundry sink to washer drain - VENT?


Being a Plumber in Oregon what rjniles said is correct, except the cross is not allowed, it is called a figure 5, and has no baffle. To use the figure a figure 5 fitting both flood level rims need to be at the same height. There is another way to do this without going under the floor, but no time to explain right now.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes

Last edited by Ron The Plumber; 03-07-2008 at 08:51 AM.
Ron The Plumber is offline   Reply With Quote
Old 03-07-2008, 09:01 AM   #4
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Default

Adding laundry sink to washer drain - VENT?


You can di it this way.
Attached Thumbnails
Adding laundry sink to washer drain - VENT?-slide1.jpg  
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 03-07-2008, 09:35 AM   #5
Newbie
 
Join Date: Mar 2008
Posts: 15
Default

Adding laundry sink to washer drain - VENT?


Thanks for the replies.

I just found this example:

http://www.terrylove.com/forums/show...hlight=laundry

Is this guy wrong? This looks like my "Option #1".

I'm going to pull off some drywall tomorrow so I guess I'll see if they prepped it for a sink. Based on the minimal amount of effort they put into other areas of the house, I really don't know what I'll find.

Thanks again!
juengl4 is offline   Reply With Quote
Old 03-07-2008, 12:48 PM   #6
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Default

Adding laundry sink to washer drain - VENT?


Looks good to me just make sure you use proper fittings, and before to tie into the existing vent make sure your 6" above the highest flood level rim.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 03-07-2008, 02:21 PM   #7
Member
 
Join Date: Jul 2007
Posts: 1,508
Default

Adding laundry sink to washer drain - VENT?


Quote:
Originally Posted by Ron The Plumber View Post
You can di it this way.
Ron, forgive my plumbing ignorance. I'm trying to figure out what is different between your option and the OPs second diagram titled Vent Option 1. Aren't they the same functionally? The washer drain and sink drain are reversed but the drain flow and vent flow look identical to me.
jogr is offline   Reply With Quote
Old 03-07-2008, 05:45 PM   #8
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Default

Adding laundry sink to washer drain - VENT?


Was just an optional way to plumb it in, there is more then one way to do this.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 03-09-2008, 12:46 AM   #9
Newbie
 
Join Date: Mar 2008
Posts: 15
Default

Adding laundry sink to washer drain - VENT?


Well, I cut out a few windows in the drywall and found that a dual vanity from upstairs is draining into the same 2" pipe as the washer...

Here is a picture/diagram of what I found:



Any thoughts on how to plumb in a laundry tub under these conditions? I would prefer to put the tub in between the studs as shown in the red oval, but I could change my plans and put them in the next cavity to the left if necessary.

Thanks for your help!
juengl4 is offline   Reply With Quote
Old 03-09-2008, 01:19 AM   #10
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Default

Adding laundry sink to washer drain - VENT?


Looks like you will need to replumb it under the house to do it to code.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 04-22-2009, 01:19 AM   #11
Newbie
 
Join Date: Apr 2009
Posts: 1
Default

Adding laundry sink to washer drain - VENT?


I stumbled upon this thread, looking to install a basement sink below the drain pipe too.

The Home Despot sells a flotec utility sink pump that claims to not require a vent or a trap. Model FPUS1860A. It hooks right up to the sink and has a 1" output line that requires a check valve.

Seems like everything else here would indicate that is very wrong.

Seems like this would be a nice easy option... If it is up to code.
archimedes is offline   Reply With Quote
Old 04-22-2009, 07:40 AM   #12
Member
 
Join Date: Mar 2009
Location: Pennsylvania
Posts: 719
Wink

Adding laundry sink to washer drain - VENT?


Quote:
Originally Posted by Ron The Plumber View Post
Was just an optional way to plumb it in, there is more then one way to do this.
Ron
The guy asked a simple question with an excellent presentation text and image, why did you have to add to it when all he needed was a simple yes or no answer. Did you have to have it your way to be right?????

SULTINI 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
How to drain a utility sink that is in basement? Mikey Palmice Plumbing 40 01-28-2008 09:11 PM
Can I tie the sink vent into the toilet vent? domgbrown Plumbing 4 01-11-2008 05:28 PM
utility sink, washer drain simon Plumbing 4 11-14-2007 07:30 PM
washer drain pipe paydelady Plumbing 3 11-13-2007 12:27 AM
Washer drain peloncito Appliances 7 08-04-2007 12:56 AM




Top of Page | View New Posts

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