Help with Drains that have moved slightly

Discussion in 'In the Garden' started by nicknoal, 22 Nov 2021.

  1. nicknoal

    nicknoal

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    Hi guys,

    I recently had an issue with a blockage in my underground drains from the bathroom soil pipe that was causing water to overflow into the yard.

    I paid for a cctv drainage report which has found that at roughly 2 metres and 3 metres from the soil and vent stack there is displacement in the drain, which appears to be causing the blockage. (See images).

    The drainage company have recommended excavating and replacing the displaced section of drain however this sounds like an expensive job that would cause a lot of inconvenience.

    I was wondering if someone with experience in this field could please advise as to whether the displacement shown in the images is a big shift in comparable terms and whether it is an issue that needs rectifying immediately?

    I have zero experience in this field and don’t know whether the shift shown in the images below is a big problem or quite common for a Victorian terrace built in the early 1900s.

    Is this something that needs fixing immediately or could I live with it?

    Any help would be much appreciated


    02B7CCFF-DE0F-4D5B-A446-CC8DA73090A6.jpeg

    01473F5F-37FA-459A-99D0-5C61B6AC52AC.jpeg
     
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  3. KenGMac

    KenGMac

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    Consider an Insurance claim under the heading of damage to underground services.

    OR?

    Line the pipe?

    Ken.
     
  4. pidgeon1

    pidgeon1

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  5. pidgeon1

    pidgeon1

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    You could line the pipe But you will have to ensure it maintains a drop in the run if it go's up and down you are back to the same problem.

    Would your water company be responsible for this part of the sewer line as it's 1900 ? there was a clause don't quote me but I think it was a section 21 that makes the water company responsible.

    My first call would be to them it costs nothing asking their customer services sometimes pays.

    Second. Try insurance as a "broken pipe" that requires replacing, no need to show them your pictures.

    Worst case dig out and replace sewer pipe to correct levels.
     
  6. John D v2.0

    John D v2.0

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    If you're renting the house out and living away it would definitely need sorting, if you're home all the time and handy with a set of rods you could live with it indefinitely and just rod it every time it blocks.
    No one will force you to deal with it that's for sure!
     
  7. nicknoal

    nicknoal

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    Thanks guys, yes it’s a rented property and so the tenant might not be happy with having to put rods in every time.

    my initial concerns was that I have heard cracked drains can cause structural issues.

    do you think this slight shift in the drains would be enough to cause structural issues to the property?
     
  8. HERTS P&D

    HERTS P&D

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    Yes.

    Andy
     
  9. pidgeon1

    pidgeon1

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    How far from the property is the dropped pipe ? What is the depth to the pipe ? is it on earth or under concrete ?

    If it's a 3 inch pipe there will only be that much drop, if you have detected where the drop pipe is much take much to dig out and replace,

    I have done this with a septic run of pipes in garden.

    Have you asked your water/sewage company are they responsible for this sewer pipe?
     
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  11. nicknoal

    nicknoal

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    I spoke to United utilities today who said that they would only be responsible for the drains which are outside the boundary of my property. In other words, if it’s in my yard it’s my responsibility and they will only fix it if it’s in the alleyway to the rear

    I haven’t seen exactly where it is however I assume that if the drop is 2 metres and 3 metres from the soil and vent stack then it will indeed be inside my property boundaries

    Read more: https://www.diynot.com/diy/threads/help-with-drains-that-have-moved-slightly.581734/#ixzz7E1NDweEe
     
  12. HERTS P&D

    HERTS P&D

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    Get it dug up and repaired, get a receipt, it comes off your tax bill if you are renting the place out.

    Andy
     
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  13. Dereekoo

    Dereekoo

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    You say recently had a blocked drain. Well I should imagine the drain has been like that for several years and a recurrence of a blockage may be another several years. Getting a local plumber to rod it should be less than £100 so weigh that against the cost of repair. As for structural damage the pipe isn't under pressure so damage from outflowing water from a few misaligned joints is not going to be an issue
     
  14. tell80

    tell80

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    Why not ask the mods to transfer you to the building forum?

    You have to dig and repair - or better to dig out all the old drainage from your house to the nearest manhole and replace with modern drainage.
    You cant leave it or you could eventually get knock-on problems such as ground subsidence causing paths, hard standings and gardens to drop a little - although at 2M or 3M from the house it might take a while to affect the foundations?

    Proper builders could take a few hours to dig out and repair - and 10 to 12 hrs to do a total dig out and line replacement depending how far the manhole is from the house, and the depth of the line.
    Use builders never use rooter or camera etc companies to do the actual work.

    Dont allow your tenant to fool with it or they'll end up with rods or a snake stuck where the tool has left the pipe at the break.
     
    Last edited: 4 Dec 2021
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  15. pidgeon1

    pidgeon1

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    Thats just the right answer, will help offset some of the outlay.
     
  16. pidgeon1

    pidgeon1

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    There is no way other than what tell80 suggests, get it done once and all.

    Haven't see any replies from original member nicknoal what he has done !
     
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