Return to the Basements Forum | Post a Follow-Up

 o
what do you know about overhead sewers

Posted by thinktoomuch (My Page) on
Fri, Sep 19, 08 at 15:12

I am in a suburb of Chicago, we just got 8" of sewer back up and seepage too, everyone around here did. To fix the problem, the contractor says I need drain tiles around the perimeter and a sump and also overhead sewers, so that the city sewers cannot back up. The overhead sewers are $10,000, he said that with overhead sewers it is impossible to back up, I was wondering how true this is. Thanks.


Follow-Up Postings:

 o
RE: what do you know about overhead sewers

I'm in Chicago area too but FAR NW. We only had 4.5" of rain but know someone in Hammond who has a basement filled and 3 feet on the first floor. Still not allowed into their home.

Your plumber is correct that overhead sewers are a solution. Or a lift station.

Water seeks its' own level and overhead sewers in effect raise the water table. To function correctly the plumbing must be water tight all the way from your home to the city sewer. A pump lifts water from the basement into the overhead sewer. A separate sump pump collects foundation water and ejects it outdoors above grade onto the lawn.

I lived in Mt. Prospect many years ago and had water in our basement. Unusual house, and I solved the problem with a lift station. Basically the sewer line from the house was intercepted (outside, but underground) with a large tank that contained a pump. All household waste was pumped from the tank into the sewer. A backflow check valve prevented the sewer from filling the tank.

Contact me off-line via "My Page" and tell me more about your location and problem. If I can supply info, I will.

Good Luck - been there, know the feeling.


 o
RE: what do you know about overhead sewers

I don't think I buy this. Your sewers run downhill already because sewage systems rely on gravity. Raising the pipes 8' or 10' is not going to make much difference if there is pressure on the line. A check valve will stop all incoming and would be a good idea if its legal.


 o
RE: what do you know about overhead sewers

hendricus

You're correct, sewers do rely on gravity. But the only pressure is the height of the water, not like water pressure from a faucet (which is caused by a much higher "water table" created by a water tower).

If the sewer line is below a basement floor, by making a new water tight connection and elevating a new sewer line to the ceiling of the basement, the flood level is raised. All household drains are then re-routed through the new "raised" sewer. Anything from the basement must be pumped up and into the new line.

That's how they work and a raised sewer will keep a basement dry unless the entire water table height exceeds the raised sewer line.


 o
RE: what do you know about overhead sewers

I get your point. We've never had drains in the basement. The main pipe going out is in the middle of the basement wall and raising it wouldn't make any difference because all the fixtures will stay the same, above the sewer line.

We had some leakage in the basement due to water trapped in the flowerbeds. They are bordered with landscape timbers and held the water pretty good. I laid a piece of plastic on the beds and stopped all leaks.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Basements Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here