Ask Experts Questions for FREE Help !
Ask
    directo's Avatar
    directo Posts: 5, Reputation: 1
    New Member
    		  
    #1

    May 9, 2011, 12:33 PM
    Why do I have a plastic pipe sticking out of the floor in my kitchen?
    We have a industrial dishwasher in our kitchen of our daycare center. The pipe that sticks out of the floor that the water drains into keeps backing up, why?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    May 9, 2011, 12:43 PM
    Without a picture it's hard to tell what the pipe is other than a drain. If the pipe is only 1.5" and partially clogged, the volume of water from the DW is overcoming the flowing capacity. Can you see below the floor? Is this pipe connected to a larger drain pipe? I'd probably just try to auger out the drain pipe and see what you find.
    directo's Avatar
    directo Posts: 5, Reputation: 1
    New Member
    		  
    #3

    May 9, 2011, 12:48 PM
    Comment on ma0641's post
    The drain pipe from the diswasher is a copper piping that leads to a pvc pipe that sticks out of the kitchen floor
    directo's Avatar
    directo Posts: 5, Reputation: 1
    New Member
    		  
    #4

    May 9, 2011, 12:53 PM
    The dishwasher has copper piping that drains into a pvc pipe that sticks out of the kitchen floor. The pipe from the kitchen floor is what is backing up and spews stuff all over the floor.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #5

    May 9, 2011, 12:57 PM
    My suggestion is still the same. Too much volume for the flow capacity.
    directo's Avatar
    directo Posts: 5, Reputation: 1
    New Member
    		  
    #6

    May 9, 2011, 12:58 PM
    Comment on ma0641's post
    How do I fix the pvc pipe from backing up
    directo's Avatar
    directo Posts: 5, Reputation: 1
    New Member
    		  
    #7

    May 9, 2011, 01:08 PM
    Comment on ma0641's post
    The dishwasher has been in place for over ten years now. We never had a problem with the flow capacity before. The pvc piping is about four inches in diameter.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #8

    May 9, 2011, 01:35 PM

    Sounds like an INDIRECT DRAIN connection that goes to a PTRAP underground... required for all commercial dishwasher drains that CANNOT be connected directly to the sewer system.

    Here, it sounds like the drain is partially clogged. If you are lucky you will find a cleanout somewhere nearby... maybe in the drain vent... and you can snake the drain through the cleanout. Otherwise, you'll need to snake through the indirect drain/PTRAP and clean the drain to fix this... ;)

    I have attached a picture showing one type of setup for a commercial dishwasher indirect connection... can also just be a pipe stubbed above the floor accepting waste from the copper drain.

    Questions? Let me know, OK?

    Mark
    Attached Images
     
    lilpoppa's Avatar
    lilpoppa Posts: 118, Reputation: 13
    Junior Member
    		  
    #9

    May 9, 2011, 07:31 PM
    Mark is right, snake it and you should be fine. But not knowing your location exactly you may have a local code requiring a grease trap on all drains in a commercial kitchen, if that is the case the trap will have to be pumped to restore proper drain flow.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #10

    May 10, 2011, 02:41 PM
    Comment on ma0641's post
    Maybe you never had a clog before. You're lucky.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Attaching copper faucet to copper pipe attached to plastic pipe? [ 1 Answers ]

I have plastic piping in the house which leads outside and then copper piping is outside with a facet attached.. I need to change the facet with torch and solder... if I heat the old one to remove with this heat travel down the copper pipe through the wall and affect the plastic pipe.. I am worried...

Toilet soil pipe is 1/2 in below fin. Tile floor how do I built concrete floor up [ 2 Answers ]

I have 2 problems,just had my bathroom floor tiled on top of concrete floor and was going to use a outside 4 in outside flange on a 4in soil pipe. I can fit over soilpipe now but tile under flange bolt down holes have no concrete under them,plus top of soil pipe is 1/2 inch below top of tile ,tile...

Can't get paper up from old vinyl floor. Laying ceramic tile on kitchen floor [ 5 Answers ]

I looked for a similar question on this site before asking and all I could find is a question about ripping up vinyl flooring to lay hard wood flooring down... So I will ask my question, I just got done ripping up the vinyl from my kitchen floor and plan to lay ceramic tile down tomorrow, I too...

Mixing abs plastic pipe with schedule 40 plastic pipe [ 1 Answers ]

I need to add a drain and there is existing schedule 40 plastic pipe, can I cement abs plastic pipe to the schedule 40 using multi purpose cement?

View more questions Search