"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"?

Is there any sign of subsidence to the property? Is there a gully taking
surface water to the main sewer? They are prone to breaking ( or the pipe
close by) if there is movement of the building. Any cracks in the relevant
wall? How about the garage? Any cracks which might lead you to think that
the drain is being collapsed?
Both would cause water to leak and run under the garage floor.
Thinking like this might give you a starting point rather than digging up
the whole lot!
Hugh