On Fri, 20 May 2011 12:10:53 +0100, Rob Morley wrote:

Or like here find a bit of "waste pipe" beneath a sink heading
into
the floor heading in the direction of drain that is in the way.
Cut
through it only to find that some bozzo had used it to sleeve the
rising main...

Classic. How's your pressure and flow?

About 5 bar and 22mm. The sudden hissing and appearance of water
around hacksaw blade was a bit of give away so it was not much more
than a large knick in the rising main. Only a few pints had escaped
before I'd managed to turn off the external stopcock. Thinking about
it I expect most of the leak would have stayed inside the "waste
pipe" and run down inside it somewhere.

--
Cheers
Dave.