Breaking in to existing underground pipe - Rainwater

[PatB]

Hi, new to this like lots of the posts I've read! I'm building an extension and want to cut in to the existing underground rainwater pipe to take the water from the new extension roof. Can I do this? The existing pipe goes in to a large soak away. Many thanks Pat

[lutonlagerlout]

you need to cut the existing pipe in 2 places ideally around 600mm apart and then using 2 slip collars insert a *Y* or an oblique to connect your new rainwater pipe

if it is clay you need to use a clay to plastic adaptor

bread and butter stuff for builders

LLL

[seanandruby]

.....An oblique junction is s Y branch :;):
You can use a Y or square ( T ) junction.

[PatB]

.....An oblique junction is s Y branch :;):
You can use a Y or square ( T ) junction.

Thanks for the advice. One final check. Is increasing the flow of water from a new roof in to the existing pipe work permitted practice by the council building inspectors?

[seanandruby]

Is the soak away accessable, or an old hard core filled jobby?
Might be worth putting a shallow inspection chamber in.

[PatB]

Existing soak away around 5mts from house and given the ok from council. Whilst I could install a new pipe I would rather connect to the existing. Don't want to ask the council if I don't need too. Was hoping could just use existing by connecting to it. I can't find any rules on what is permitted by local authorities

[seanandruby]

Fitting a shallow inspection chamber will be in compliance with part H1 of the building reg's. The chamber will provide the system with a surcharge in heavy storm conditions and make the pipes rodable, as i am assuming the soak away Will not be accessible safely. Will the chamber ( if used ) be subject to heavy loading, or in a garden area? What part of Sussex are you in?

[ajmoore1]

If you use a rodable gully and it is a straight length shouldn't need an inspection chamber.

[seanandruby]

If you use a rodable gully and it is a straight length shouldn't need an inspection chamber.

Fine but is the existing pipe roddable ???
And reason i asked the posters location is because i have a spare shallow IC going chip cheap :;):