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Should piping for sink and dishwasher come from within the pony wall?

5 years ago

last modified: 5 years ago

Sink will be on left and dishwasher on the right. Is it a big deal to have the piping like this? Do they have to be coming from where the wall will be underneath the sink and therefore these should be instead coming out of the floor within the pony wall?

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doc5md

5 years ago

last modified: 5 years ago

Correct. Just an annoyance.

I would point out though that it still needs to be properly vented. Depending on the situation, there might be an appropriately close vent stack. Absent that, there will need to be a loop vent, unless they are planning a studor (or air admittance valve) which is not allowed in many locales.

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Comments (9)

PRO
PPF.
5 years ago
They should come up on the other side of the wall, then through the back of the cabinet, but it might depend on what is directly below.
HU-71525651173
Original Author
5 years ago
Key word being "should." If not though, it's just an annoyance as opposed to a real problem right? I'm the buyer so I'm wondering if I should be worried enough to bring it up.
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well, if you sold the place someone could pull out a dish drawer /drawer in the kit and put in a full dw if they need it. it is a huge house... if you plan a lot of parties/gatherings where food will be cooked/brought in and real dishes (vs paper plates- what I use!) then I think it could be a great option for you. the dishes could be stacked in there til guests are gone, then you could rinse / scrape and load the dw. turn it on and leave the room. And not need to look at it til the next day or so. That would keep the mess out of the 'party' space. unless you see a lot of use for it in your near future, I'd just prepare the space/plumbing for it in case down the road things changed - like you take in 3-5 roommates - lol! If your mom, a sibling, friend etc would come to spend the summer (swim) or winter (no snow/cold) with you then you might be glad to have the full dw and have it in that room away from your living area. will the counter across from sink be an open counter or flr - ceiling cabinets? what's in the space behind the w/d and sink? (to the left on drawing)
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In general, if pipes are exposed to room temperature air, they will usually not get cold enough to freeze. If there is a possibility of freezing it also helps to use PEX, since it will handle expansion/contraction much better than copper pipe. If you can run the supply pipes directly up under the sink where they are exposed (not run in the wall behind the sink), they are unlikely to freeze. Your sink drain will probably have to run into the back wall because its the only easy way to get it to vent properly and not create an S-trap (not allowed). However, the sink trap will be under the sink in relatively warm air, and that is the part of the drain that could freeze. The other question I have is how do you plan to heat the extended area where you put the sink? If its so cold and uninsulated on that wall/floor that it might freeze the water lines, you will be freezing yourself when you stand at the sink. You might want to work in an air register, undercabinet heater, etc. that heats the entire sink area at the floor level. Bruce
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alex9179
5 years ago
Plumbing can get in the way of utilizing the area under the sink. Why start off that way when it's easily rectified? I'd ask them to reposition the drain and lines in the dead space within the wall. Also watch how the fridge water line is finished. Recessed into the wall is better so the fridge can be set back as far as its clearances allow.

If you think about how you want to use the storage space, make sure that the plumbing configuration will allow it. Lisa_a's sink cabinet comes to mind but I'm having trouble locating it. Here's an example, inspired by her. [Pullouts[(https://www.houzz.com/discussions/trash-pullout-and-drawer-under-sink-finally-installed-dsvw-vd~3617245)
HU-71525651173
Original Author
5 years ago
last modified: 5 years ago
I just remembered they also do the bathrooms this way too: https://imgur.com/a/IogflDb

They do have their models like this too...water lines for toilets come out of floor instead of wall...

Also, just found this video. Piping from the floor is a thing in kitchens I guess. https://www.youtube.com/watch?v=7L8OVOVvzAA
PRO
Virgil Carter Fine Art
5 years ago
The supply and drain lines will work, within cabinets. How will vent stack be handled?
PRO
Mark Bischak, Architect
5 years ago
I assume the plumber that installed the rough plumbing knows more about why the pipe and tubing are installed where they are. Ask the plumber.
cookncarpenter
5 years ago
last modified: 5 years ago
Either location will work, although preferably would have been behind in the void area where the electrical comes up. Perhaps there is something below the floor that dictated this location? If not, it should not be too late to move them...as MBA says, ask your plumber.
PRO
Joseph Corlett, LLC
5 years ago
It's fine.

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