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Groundwork & Foundations

How to fix sunken drain inspection chamber?

I am buying a house and my surveyor has pointed out silting in one foul drain inspection chamber, probably due to slight subsidence of the ground around the chamber. I can see some waste has acumulated in the chamber's open gulley as it is the lowest point. It is there because of a 90 deg change of direction in the drain line.
I assume the only way to fix this is to completely re-build the chamber?
What sort of cost is likely to be involved in this? (the chamber is easily accessible at the top of a garden).
Chamber (manhole) is approx 0.6m deep and built of brick, with concrete render on the face.

1 Answer from a MyBuilder Groundworker

Best Answer

Hi, your most cost effective repair for this problem would to dig around the existing chamber and expose the existing pipe. Them demolish the defective brickwork chamber and replace with a plastic inspection chamber and back fill. All this work should be able to be carried out in 1 day so cost should not be to horrific £300 to £400.


Answered 3rd Jan 2013

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