plastic underground question

[wildcard]

Started a job today,converting an external garage into a bedroom with en suite.Customer has run the new drain for me to connect my stub stack to.My question is can i run 4 22mm plastic pipes in the same trench?
It will be f&r & h&c supplies,lagged of course.I know fittings will be a no no. Thanks.

 

[oldplumber]

what ever you run should be in a conduit and insulated, as you shouldnt run barrier type pipe direct into the soil, and the cold can be run in mdpe, preferably in a conduit to allow for repacement should the need occur

 

[Bernie2]

I also assume the ground has not been contaminated by oil?

The guide to the Water Regs should tell you, just Google it.

 

[tamz]

Ohhhhhhh, a bit of the coated table Y...............dear stuff you know...............mmmmmmmmmmmm.............. it will not be a cheap job this😀😀😀