Does This Kitchen Sink / Laundry Plumbing Layout Look Good? - Plumbing - DIY Home Improvement | DIYChatroom
Advertisement


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 03-30-2016, 03:31 PM   #1
Member
 
Join Date: Aug 2012
Location: Pennsylvania
Posts: 227
Rewards Points: 198
Default

Does this Kitchen Sink / Laundry plumbing layout look good?


I'm replacing the plumbing for my kitchen and washing machine hookup. Does the layout I put together look ok per code?

Is there a minimum and/or maximum height of laundry standpipe?

Minimum and/or maximum height for standpipe trap from floor?

Many thanks in advance!


stevekem is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-30-2016, 06:18 PM   #2
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 5,654
Rewards Points: 1,854
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


The washer machine needs to drain to a sanitary tee fitting not a wye 45 as you show.

Your local plumbing authority may not allow the use of an AAV for the vent.

You will also need to run 3 inch up to the washer pickup use a 3 by 2 inch sanitary tee at that connection.

If both are on the same floor it is code legal. If not you will need to add a vent on the line to the washer trap.

Standpipe minimum is 18 inch vertical drop and 42 inch maximum drop.

Last edited by Ghostmaker; 03-30-2016 at 06:20 PM.
Ghostmaker is offline   Reply With Quote
The Following User Says Thank You to Ghostmaker For This Useful Post:
stevekem (03-31-2016)
Sponsored Links
Advertisement
 
Old 03-30-2016, 08:20 PM   #3
Member
 
Join Date: Nov 2007
Location: Iowa
Posts: 1,238
Rewards Points: 76
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by Ghostmaker View Post
The washer machine needs to drain to a sanitary tee fitting not a wye 45 as you show.
Just curious how come you can't use a wye? Are wyes not allowed vertical like that? I know sanitary tees can't lay horizontal on their back but didn't know wyes couldn't go vertically. Just trying to learn.
ponch37300 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-30-2016, 08:44 PM   #4
Member
 
Join Date: Jun 2015
Posts: 99
Rewards Points: 198
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


You need a Combination Wye and 1/8th bend on its back between the trap and the horizontal 45 to vent the washing machine stand pipe. Your local code may not require it but the Uniform Plumbing Code does. Check with the local authority.
srloren is offline   Reply With Quote
Old 03-30-2016, 09:40 PM   #5
Plumber
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: North Idaho
Posts: 11,385
Rewards Points: 166
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by ponch37300 View Post
Just curious how come you can't use a wye? Are wyes not allowed vertical like that? I know sanitary tees can't lay horizontal on their back but didn't know wyes couldn't go vertically. Just trying to learn.
Wyes are allowed in the vertical to connect horizontal branches to the stack, but not in the case of joining a trap arm such as yours.
A wye will not allow air to the trap due to the 45* angle of the fitting- A santee will.

Quote:
Originally Posted by srloren View Post
You need a Combination Wye and 1/8th bend on its back between the trap and the horizontal 45 to vent the washing machine stand pipe. Your local code may not require it but the Uniform Plumbing Code does. Check with the local authority.
Not necessarily. A santee will work instead of the combo shown in the image- but the sizing needs to be correct
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is offline   Reply With Quote
Old 03-31-2016, 02:27 PM   #6
Member
 
Join Date: Nov 2007
Location: Iowa
Posts: 1,238
Rewards Points: 76
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by TheEplumber View Post
Wyes are allowed in the vertical to connect horizontal branches to the stack, but not in the case of joining a trap arm such as yours.
A wye will not allow air to the trap due to the 45* angle of the fitting- A santee will.

Not necessarily. A santee will work instead of the combo shown in the image- but the sizing needs to be correct
So no wye because of the vent, makes sense now. If it was vented before joining the stack then a wye would be fine?

What is the difference between a wye and a combination wye and 1/8th bend? Are they the same but just using a 45 on it? What about a long sweep wye, where do you use those?

Sorry for derailing the OP's post but thought it was a good place to ask.
ponch37300 is offline   Reply With Quote
Old 03-31-2016, 04:57 PM   #7
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 5,654
Rewards Points: 1,854
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Ponch take a look at the drawing. Lets say the KS is not attached. And it was just a vent to air. Look at the trap weir. Now look at where the air in the stack is. Notice it is below the trap weir. That is why it is illegal.
Ghostmaker is offline   Reply With Quote
The Following User Says Thank You to Ghostmaker For This Useful Post:
ponch37300 (03-31-2016)
Old 03-31-2016, 05:59 PM   #8
Plumber
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: North Idaho
Posts: 11,385
Rewards Points: 166
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by ponch37300 View Post
What is the difference between a wye and a combination wye and 1/8th bend? Are they the same but just using a 45 on it? What about a long sweep wye, where do you use those?
When you add a 45 to a Wye it then becomes a Wye and 1/8 bend- an 1/8 bend is another name for 45.
45 degrees is 1/8 of a circle
A long sweep Wye is just a Wye and 45 molded as 1 fitting. They are called combys or long turn t-y. It's all regional terminology....
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
TheEplumber is offline   Reply With Quote
The Following User Says Thank You to TheEplumber For This Useful Post:
ponch37300 (03-31-2016)
Old 03-31-2016, 08:54 PM   #9
Member
 
Join Date: Aug 2012
Location: Pennsylvania
Posts: 227
Rewards Points: 198
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Thanks guys! How does this look?


stevekem is offline   Reply With Quote
Old 03-31-2016, 09:33 PM   #10
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 5,654
Rewards Points: 1,854
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Make sure your local area approves the use of AAV's . Ohio has severly limited the use once they looked into the engineering documents.
Ghostmaker is offline   Reply With Quote
The Following User Says Thank You to Ghostmaker For This Useful Post:
stevekem (04-11-2016)
Old 04-01-2016, 10:55 PM   #11
Member
 
Join Date: Jun 2015
Posts: 99
Rewards Points: 198
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by TheEplumber View Post
Wyes are allowed in the vertical to connect horizontal branches to the stack, but not in the case of joining a trap arm such as yours.
A wye will not allow air to the trap due to the 45* angle of the fitting- A santee will.

Not necessarily. A santee will work instead of the combo shown in the image- but the sizing needs to be correct
EPlumber is correct and a SanTee should be cheaper than a Combination. The Combi would allow easier snaking through the vent and would direct the snake away from the trap arm. The plumber doing the snaking needs to determine if he should go into the shower drain or through the vent dependeing on how long it takes for the stoppage to fill up to the shower opening.
srloren is offline   Reply With Quote
Old 04-11-2016, 01:57 PM   #12
Member
 
Join Date: Aug 2012
Location: Pennsylvania
Posts: 227
Rewards Points: 198
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


I had to change the layout from my initial plan as I had a 13" solid concrete wall to go through to access the laundry standpipe location so I am planning on using an existing drain already in place in this location that was cut off by previous owner.

Below pic is my dry fitted layout. Does this look ok before I glue it?




stevekem is offline   Reply With Quote
Old 04-11-2016, 07:15 PM   #13
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 5,654
Rewards Points: 1,854
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Are you sure that old drain is any good? And is it connected to the sewer not the storm?
Ghostmaker is offline   Reply With Quote
The Following 2 Users Say Thank You to Ghostmaker For This Useful Post:
stevekem (04-12-2016), Yodaman (04-11-2016)
Old 04-11-2016, 07:34 PM   #14
Property Mgt/Maint
 
Join Date: Mar 2015
Location: Upstate NY
Posts: 6,469
Rewards Points: 8,184
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


Quote:
Originally Posted by Ghostmaker View Post
Are you sure that old drain is any good? And is it connected to the sewer not the storm?

Or a old septic line. Around here our old houses were originally set up with septic systems. When municipal sewage was installed and tied in, the old septic lines were sometimes capped and abandoned.

Last edited by Yodaman; 04-11-2016 at 07:38 PM.
Yodaman is offline   Reply With Quote
The Following User Says Thank You to Yodaman For This Useful Post:
stevekem (04-12-2016)
Old 04-12-2016, 08:56 PM   #15
Member
 
Join Date: Aug 2012
Location: Pennsylvania
Posts: 227
Rewards Points: 198
Default

Re: Does this Kitchen Sink / Laundry plumbing layout look good?


I should have clarified... The pipe was previously used for a laundry tub but was cut off when the tub was removed. It drains into main lateral line.

I finished gluing that up today and started working on the main drain for the kitchen sink (that this laundry standpipe was initially supposed to connect to).

There will be a sanitary tee (in kitchen sink base) that goes into the 45 fitting shown in pic, with AAV on top of that tee.

I changed it a little based on fittings I have and I added a clean-out, does everything look in pic below (dry fitted)?


stevekem is offline   Reply With Quote
Sponsored Links
Advertisement
 
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
Plumbing a washer/dryer combo into kitchen sink VersaBar Plumbing 12 05-24-2017 01:05 PM
Learning to DIY kitchen sink plumbing trynna86 Plumbing 13 06-26-2014 01:18 PM
Laundry water backing up in kitchen sink Axitech Plumbing 5 02-10-2011 10:01 AM
Venting a sink pump WillK Plumbing 2 12-26-2010 01:21 PM
Kitchen island sink plumbing pics request BCP Plumbing 5 03-02-2009 02:40 PM




Top of Page | View New Posts