Drain washing machine on first floor to laundry tub in basement?

Users who are viewing this thread

carlmm

New Member
Messages
3
Reaction score
0
Points
0
Location
Nebraska
Would this be feasible?

There is a laundry tub/sink in the basement directly under the area where the washer and dryer will be placed on the first floor. Could I run a 2" drain line into the laundry tub? If so, would the drain from the washer to the laundry tub need the normal P trap and venting? (The laundry tub has a trap and is vented.)

Apologies in advance if this has been discussed elsewhere. I looked and didn't see anything on point.

Thanks!
 

Jadnashua

Retired Defense Industry Engineer xxx
Messages
32,771
Reaction score
1,191
Points
113
Location
New England
You have to be careful how you do this...the outlet of the WM must be within the specs, or it will just siphon itself dry during the fill. Generally, no, I don't think you'd get away with this. You may be able to tie it into the drain of the sink, IF it is large enough, but you'd also need to vent it properly. See what the pros have to say about this, as I'm not up on all of the codes, but the physics are clear...you'd need a standpipe for it so it didn't siphon.
 

Leejosepho

DIY scratch-pad engineer
Messages
2,483
Reaction score
0
Points
36
Location
200 miles south of Little Rock
Website
www.nonameyet.org
Would this be feasible?
That depends upon what you might mean by "feasible" since it certainly would not pass an inspection. To do this properly, you need to run a drain line with trap down to a drain line of at least equal size, then run a vent on up to another vent line or out through the roof. But for a temporary drain while getting that done, a piece of 1-1/4" flex hose might do just fine as long as you fasten each end to something to keep it high enough for the washer and the other end inside the sink.
 

Terry

The Plumbing Wizard
Staff member
Messages
29,946
Reaction score
3,460
Points
113
Location
Bothell, Washington
Website
terrylove.com
Drain washing machine on first floor to laundry tub in basement?

No.

804.1 All plumbing fixtures or other receptors

receiving the discharge of indirect waste pipes shall be
approved for the use proposed and shall be of such
shape and capacity as to prevent splashing or flooding
and shall be located where they are readily accessible
for inspection and cleaning. No standpipe receptor for
any clothes washer shall extend more than thirty (30)
inches (762 mm), nor less than eighteen (18) inches
(457 mm) above its trap. No trap for any clothes
washer standpipe receptor shall be installed below the
floor, but shall be roughed in not less than six (6)
inches (152 mm) and not more than eighteen (18)
inches (457 mm) above the floor.


No trap for any clothes washer standpipe receptor shall be installed below the floor

Below the floor would also include any floor below.

Just install plumbing for the washer as per code and you will be fine.
 

hj

Master Plumber
Messages
33,599
Reaction score
1,037
Points
113
Location
Cave Creek, Arizona
Website
www.terrylove.com
However, it he just stuck a pipe through the floor into the laundry sink and hooked the washer drain over the top of it, all of the reasons for NOT having a long riser or trap under the floor would be invalid.
 

Cwhyu2

Consultant
Messages
1,615
Reaction score
22
Points
38
Location
Cincinnati OH
However, it he just stuck a pipe through the floor into the laundry sink and hooked the washer drain over the top of it, all of the reasons for NOT having a long riser or trap under the floor would be invalid.
And that would be called an indirect waste.
 

carlmm

New Member
Messages
3
Reaction score
0
Points
0
Location
Nebraska
However, it he just stuck a pipe through the floor into the laundry sink and hooked the washer drain over the top of it, all of the reasons for NOT having a long riser or trap under the floor would be invalid.
That's sort of what I was thinking . . . but I want to comply with the local municipal code. I suppose that I'll err on the side of caution.
 

Joe Six Pack

New Member
Messages
30
Reaction score
0
Points
0
Location
Anchorage AK
However, it he just stuck a pipe through the floor into the laundry sink

Sort of like a rain gutter?
Would taht work the for shower or tub to?
How buout a kicthen sikn? can I rain gutter atht too?
 

hj

Master Plumber
Messages
33,599
Reaction score
1,037
Points
113
Location
Cave Creek, Arizona
Website
www.terrylove.com
I once had a customer who wanted to connect his tub to a 3/4" pipe dropping into the basement. I told him if he did it, the tub would such anything within five feet of the tub down the drain, including his kids.
 
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks