"Lobster" wrote in message
om...
"Kalico" wrote in message news:Myu%b.13283$Y%

I bought a roll of 25mm MDPE blue pipe from my local merchants, dug up
the
front garden and drilled a big hole through the front of the house to
get
the pipe through to the sub-floor space. Be sure to sleeve the 25 mm in
28mm or 32mm plastic waste where it passes through the brick.

As it happens I need to do this myself soon; and have been scratching
my head over the specs diagram I've just received from the water co.
It shows the MDPE pipe coming through the wall, minimum 750mm below
ground, sheathed in another pipe as you describe. However, it
stipulates that the min radius of the sheathed pipe is 750 mm! ie, as
drawn, it must come up through the kitchen floor at least 750mm from
the outside wall! This bears no resemblance to any installation I've
ever seen, and makes no sense to me at all. Can anyone shed some
light on this???

The 750mm is only enforceable if you don't insulate the pipe. Put some
insulation around it and you are allowed to go up to the surface provided
you guard it against breakage.