Seem to have a negative flow on underground soil pipe from Kitchen drain

[Spike47]

Hi
Have had a camera along the drain from inspection chamber to back of house drain that the roof and kitchen feed into and there seems to be a negative flow from about 3 meters from that drain that is only carrying water etc from kitchen, has per youtube vid attached, it is mainly due to some subsidence in that area due to soil etc not being compacted properly when drain and path where laid !.
So the question is, will this need to be rectifed asap or not, there dose not seem to be any leaking from the pipe has yet !.
 

 

 

[MikeSharp01]

One guesses - yes it will need rectifying as it will eventually clog / silt up. Interesting video though - I kept waiting for the screen to fill with contents of a flush coming at the camera.

[Spike47]

Just to say, this pipework is under a concrete path 

 

 

[Spike47]

25 minutes ago, MikeSharp01 said:

One guesses - yes it will need rectifying as it will eventually clog / silt up. Interesting video though - I kept waiting for the screen to fill with contents of a flush coming at the camera.

Ha,Ha, more interesting would be a pic of my home made camera !

Edited Friday at 18:22 by Spike47

[Spike47]

31 minutes ago, MikeSharp01 said:

One guesses - yes it will need rectifying as it will eventually clog / silt up. Interesting video though - I kept waiting for the screen to fill with contents of a flush coming at the camera.

Most of that run is only water etc from the kitchen, only the last 500mm, where the toilet flush enters the pipework 

[Nickfromwales]

27 minutes ago, Spike47 said:

Most of that run is only water etc from the kitchen, only the last 500mm, where the toilet flush enters the pipework 

How long has it been like this?

[Spike47]

2 hours ago, Nickfromwales said:

How long has it been like this?

The path has been sinking from the kitchen end over the years and the soil pipe has sunk along with it, so it has taken a long time to get to where it is, but it is very slowly still sinking, the house is ok, that is built on a concrete slab.

[Nickfromwales]

9 hours ago, Spike47 said:

The path has been sinking from the kitchen end over the years and the soil pipe has sunk along with it, so it has taken a long time to get to where it is, but it is very slowly still sinking, the house is ok, that is built on a concrete slab.

Ok, and has it blocked yet, eg you’ve had to rod or jet it?

 

At nearly 50% stagnant water you’re not yet In need of replacement drainage, as this can be lifted and reset to remove the depression, but you’ll likely need to take up the concrete at the width of the gate to allow you to excavate (by hand) the soft crap our and backfill with new, MOT sub base, and then replace the path.
 

If it’s still useable then you can put this job off for a while but obvs not forever, but as the survey stopped short of the connection my fear is this may now be weighing on the connection to the sewer  / manhole and that will eventually just shear off.

 

If you act sooner than later the pipework could possibly be saved. Not megabucks saving to be had but pointless wasting more money by delaying further, if you have the spare beer tokens to fix it now. Plus, the last of the weather is with you vs having to do this in the worst of it, if it then fails completely. That day is coming, btw. 
 

The concrete can be disc cut to minimise damage to the surroundings, but are you sure the rest of the concrete hard standing is not on the move too?

 

Disconnecting the path from the surrounding concrete may relieve some of the burden on the pathway, so that could be a long term insurance against the surrounding continuing to settle and the path not (possibly) following suite again.