Making and Lining a 6 foot deep manhole pit
Making and Lining a 6 foot deep manhole pit:
There are tree roots in the main drain from the house,
the drain engineer suggested inserting a new access point
to clear the roots, and maybe insert a plastic liner.
I guess the hole needs to be about 6 feet deep,
and have a possible loan of a digger and driver.
But how big to make the hole,
and how to line it?
Blocks or concrete how thick?
or newfangled plastic ?
george
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