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Identify this manhole/inspection chamber

Hi,

I have 3 manhole covers in my driveway and on lifting each of them looks like this.

2 have surface water pipes going in. These 2 were full of mud/silt which I have cleared.

My question is what are they? The bolted covers confused me.

I was thinking maybe they are catchpits for surface water designed to collect debris and before it drains into a soakaway.

Could these be some sort of sewer. There was no foul smell.

Would value thoughts.

Cheers

 


Comments

  • How old is the house?

    Surface and sewage have been kept separate for quite a while now, so I suspect you are correct in your assumption. 

    I'm sure others will know for sure. 
  • twopenny
    twopenny Posts: 8,837 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Not for sure. I have 7 around the house, 5 in the garden. Took me 18mts to figure out what each was for.
    2 are large concrete oblongs that can't be opened.
    One was for electric in some way. Street light to my electric box. Only found out when I tried to dig it up as a flower bed and found concrete leading between each.
    Another is a mystery and lays across the waste water pipes. I think it could be to do with the gas which is that side on my and my neighbours house.
    The ones for water are all circular.

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