Sunken/Uneven Manhole Backgarden

Abril9

Hey Guys,

I'm just wondering if anyone would have any advice or has someone input regarding this fallen/sunken manhole in our back garden. We live in an estate (30+ years old) and we're at the end of a line of semi-d houses on the corner. In our back garden we've a host of mature hedges/plants and trees and an uneven lawn that we would like to tidy-up a little.

We've some conifer hedging running alongside the boundary wall and right beside it, is this manhole that is not level with the rest of the garden. I assume its drain/sewage access and I've got a drain company coming out over the next few days to have a look inside/down the drain. I guess my question is why the manhole has fallen down like it has. Is this normal enough wear and tear of concrete after 30 years and some garden soil movement overtime? Would the tree roots be playing a role?

Any feedback/advice would be greatly appreciated

looksee

It could possibly be a sewer serving more than your house - a sewer for the estate - and if it is, it is the council's job to sort it. We had one that the cover had worn very thin, dangerously so, and they came and replaced it.

blackbox

The photo suggests that the lawn is on a slope and the manhole is level and in good condition.

Abril9

https://www.boards.ie/discussion/comment/121938543#Comment_121938543

You could be correct or I might be at fault for poor camera skills (I'm clueless with a camera), the lawngarden itself everywhere else is flat level with the house from what I can see but the areas (in and around that manhole) are definitely not level with the rest

If you get some tent pegs and some string. Pull lines across the area and use a sprit level to set the string level. Then you can see what is level or sloping/sunken

To me the man hole and concrete look proud of the lawn. You could add top soil around the area to level it up.

But hard to tell from photos

looksee

I don't think you can do anything with the manhole, its a unit fitted into the ground and really cannot go un-level unless it is badly broken, which it does not appear to be. I think you would have to build up the soil round it rather than try and alter the manhole.