Plumbing Forum - Professional & DIY Plumbing Forum > General Plumbing Discussion > General Plumbing Help > Upper floor rental- washing machine disaster prep



Reply
 
Thread Tools Display Modes
Old 08-12-2014, 08:59 PM   #1
jeffpas
Junior Member
 
Join Date: Aug 2014
Posts: 10
Default Upper floor rental- washing machine disaster prep

Hi- basically what I have is a second floor in a building which I am eventually going to rent out as an apartment.
I have hired a plumber to add hookups and drain so that the renters can have a washing machine and dryer- which I believe is worth the trouble. Too late for that debate.

Now, what I'd like to do is be prepared in case the (we assume to be) careless renters flood their washer.
Attached are pictures of what the plumber did both on the 2nd floor, and below the room downstairs which is a utility room. You can see the white drain pipe going around the ceiling of the downstairs room, and down into the septic stack. Also you can see upstairs where he added a venting stack for the drain. OK, he's a professional plumber, we assume he knows his stuff.

Now what I would like to do..... is put a drain next to the pipes upstairs, basically cut a hole in the floor for a 2" PVC pipe but, then where does it go safely?

If you look at the basement picture where the laundry drain connects to the stack [pic #4], you can see an unused black stack next to it, that tees into it. That's the obvious answer I would assume would work (tell me if you doubt)- connect floor drain to black stack. However......then I have to run an entire second 2" pipe all the way around the room connecting that to the floor drain, that only gets used on the off chance the upstairs washer floods. Expensive, takes up space, looks crummy too. Is there a smarter way?

What I would LIKE to do instead is tee off the plumbers washer drainpipe up at the top under the floor, combining the floor drain and the washer drain to one pipe [pic #2]. Simpler, uses a lot less space and money. My fear however is that when the washer is run, then water may overflow/back up the floor drain upstairs.

Can anyone tell me if this physically would happen, or not via gravity and physics? Obviously once I cut into the pipes and test, etc, its too late.

:/



20140810_151142.jpg   20140810_151038.jpg   20140810_151047.jpg   20140810_151056.jpg  
__________________
jeffpas is offline  
 
Reply With Quote Quick reply to this message
Old 08-13-2014, 04:08 AM   #2
journeyman
the professional
 
journeyman's Avatar
 
Join Date: Oct 2012
Location: san diego, california
Posts: 271
Liked 83 Times on 64 Posts
Likes Given: 80

Default

The water lines and stand pipe seem a little low to me. And i am not sure using a aav is approved. hopefully someone else in this forum can answer that part. i would not use a tee i would use a wye fitting. i would run a seperate line for floor drain



__________________
journeyman is offline  
 
Reply With Quote Quick reply to this message
Old 08-14-2014, 12:06 AM   #3
jeffpas
Junior Member
 
Join Date: Aug 2014
Posts: 10
Default

I'm not following you say a WYE fitting into the original pipe, but you also said run a separate pipe. So combining would work then? I would rather not run a whole additional pipe across the room downstairs just on the off chance of a leak, it seems like overkill.

I know the separate pipe would be preferable but would combining pipes work, or would water come out of the floor drain upstairs aka overflow when the washer is run based upon that setup, the level of the drain, stand pipe, etc? That's what I'm really trying to determine ahead of time.

Also there is the matter of sewer gas, regardless of separate or combined. My thinking would be either way, to put a pipe U in (sorry don't know the plumbing term) to trap some water and block the gas, though I'm not sure if standing water would stay in such a pipe if water only went down it say, once every 5 years when the washer floods. Surely someone experienced at this knows a solution.....



__________________

Last edited by jeffpas; 08-14-2014 at 12:11 AM.
jeffpas is offline  
 
Reply With Quote Quick reply to this message
Old 08-18-2014, 06:50 PM   #4
jeffpas
Junior Member
 
Join Date: Aug 2014
Posts: 10
Default

thanks guys, finally I came up with a solution we can close this

__________________
jeffpas is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Washing machine smells Windy General Discussion 4 08-02-2014 11:57 AM
Adding washing machine drain to second floor 3" stack vent -please help????? carlo77 Drain and Sewer Cleaning 6 12-02-2013 02:54 AM
Washing Machine Drain jpm6621 General Plumbing Help 21 12-19-2012 03:52 AM
Washing Machine Drain monday8908 General Plumbing Help 1 06-13-2012 01:19 PM
Washing machine plumbing nickb7 General Plumbing Help 10 07-28-2010 06:01 PM

Newest Threads

LATEST SPONSOR DEALS