ᐅ Void space beneath basement floor / how to fill it

Created on: 8 Mar 2023 21:33
A
Altmark1980
Good evening,

House built in 1980.

Basement with driveway and parking space. Basement is below street level.

A camera inspection of the wastewater pipe (ceramic pipe running diagonally under the house) showed that it has settled. One pipe section was sloping slightly upwards in the direction of flow.
Today, I dug from the outside down to the strip foundation and saw that there is a large cavity between the pipe and the basement floor (15cm thick (6 inches), no foundation).

At some point, the pipes outside were replaced, but the connection to the pipe under the house was not done professionally. (The pipes were just laid end to end without a sealing ring.)
This leak has further contributed to the ground settling.

What do you suggest? Should the cavity be compacted and sealed?
If yes, how?

Have a nice evening
Work boots standing at the edge of an earth pit; orange-brown wooden beam lies in the pit.

Close-up of a dirty sand-colored ring next to rusty metal part.

Close-up of a copper-colored pipe in a narrow, dusty wall opening with concrete residues.

Small dark shaft in a stone wall, floor covered with soil and gravel, looking inside
Nida35a14 Mar 2023 12:42
Altmark1980 schrieb:

If you mean the stoneware pipes, then a lot of homeowners would now have to start digging up their front yards and their slab foundations.
here, just using informal language 😉 ,
the joints and connections have the tightness of infiltration pipes,
and yes, they will need to be leak-proof in the future