Help me understand the potential impacts to structural integrity if a tunnel is dug to repair sewer line. The break is 12' from the nearest outside wall, so the tunnel will be at least that long, and however deep and wide is usual for access.
This same spot was accessed via holes jack-hammered through the floor about 7 years ago (rant about bad remodels and shifty plumbers saved for another post). I am being told that they don't like to access below-the-slab plumbing that way anymore, and want to tunnel under.
While the interior access mess was considerable, I have to wonder what removing all of that base material beneath my slab will do, if I allow the tunnel. How do they compact the soil back when they are finished?
This same spot was accessed via holes jack-hammered through the floor about 7 years ago (rant about bad remodels and shifty plumbers saved for another post). I am being told that they don't like to access below-the-slab plumbing that way anymore, and want to tunnel under.
While the interior access mess was considerable, I have to wonder what removing all of that base material beneath my slab will do, if I allow the tunnel. How do they compact the soil back when they are finished?