"Sue Zooki" wrote in message
...
I have a leak from the main drain from the house, which unfortunately
runs under my garage base. I have a pit, 5'6" deep, in the garage, and
the water is seeping into the pit. Getting the job done is no problem,
but I want, if possible, to find exactly where the break or fracture is
to cut down on guesswork, and the amount of digging of course.

I toyed with the idea of using a webcam on the end of drain rods to take
a look for the break, but as it's at least 20 feet from the manhole, and
the maximum length for a USB 1.1 cable is only around 10 feet, that idea
was kicked into touch. Getting someone in with specialist camera gear is
out of the question due to cost.

Anyone have any other suggestions other than, "Get digging matey"?

Sounds like you've found the problem.
As I said - the gully or drain that is near the pit - break up the concrete
above it, and dig down and you will possibly find the soil is washed away,
and the gully/pipe broken - replace with a new plastic type, job done!
If the soil is washed away from under the foundations of the house , you
need to shove in a concrete mix (ballast)
Is it a victorian property by any chance? With foundations about 10'' to 1
foot?

Hugh