How to tell which way the underground clean out flows

Discussion in 'Drain Cleaning' started by Bob from accounting, Feb 3, 2021.

  1. Bob from accounting

    Bob from accounting Member

    Mar 5, 2020
    Hey There,

    I need some simple DIY suggestions on how to determine which way the clean out goes to a main building 4" drain line under ground. Left to right or right to left
    We have a clean out on either side of the building that is flush to the ground on both ends 70' apart from each-other. One of the clean out goes out to the city and is at the end of the pipe, and the other goes down the main line and cleans out the building's main drain line.
    I am not sure how to tell which way is which. As of now a plumber stuck a camera down 5' and quickly could tell which way it went.
    However on additional buildings set up like this, I want to figure out a DIY method to determine if the clean out is at the head of the drain pipe or if the clean out is at the end of the pipe?
    There is no obvious slope in the ground or city man hole near by.
    Not sure if this make since, but there are a lot of these to determine direction on and if you had any suggestions that would as always be so helpful.
    One idea I had to look down it and see if I can see running water, the clean out has a 45 in it and I can't see the flow of water via using a flash light.
  2. Reach4

    Reach4 Well-Known Member

    Sep 25, 2013
    A cleanout with a 45 will typically have the 45 point down in the direction of travel.
  3. Sponsor

    Sponsor Paid Advertisement

Similar Threads: tell underground
Forum Title Date
Drain Cleaning Could a plumber please explain residential underground plumbing to me? May 11, 2016

Share This Page