SQLit wrote:
"orangetrader" wrote in message
news
I need to have someone come dig a tunnel to access a "Y" connection
in the
sewer line that needed to be replaced. Access from above is too
problematic
and messy.

The quote I got is $187 per foot of digging. They will need to dig
down
several feet beyond the footing, then dig a horizontal tunnel six
feet
over
to the location of the pipe. Because we are in Miami and near the
beach,
the soil is all sandy, I guess when they tunnel, the compacted sand
above
the tunnel will fall? This means more dirt will be removed from
the
tunnel.
Now when they finished repairing or replacing the drain line, they
told me
they can just throw the dirt back into the tunnel and all will be
ok.

I wonder how you will throw the dirt back into the tunnel to fill
the
space
below the slab and above the footing? Can this really be done?
Does it
not
require some sort of a sand/dirt pump? Even if this is doable it
will not
be compacted right?

Will this cause the line to be "suspended" and not resting on dirt
and
will
that cause future failure - possibly the weight of water going
through may
create a back pitch? Will the foundation settle as a result of
this dig?

Thanks for any comments,

O



Cutting the floor is problematic compared with a void under the floor
after
the repair...

I would not even consider tunneling.

Are you saying cutting the floor is worst or tunneling is worst?

O