new stack and underground waste

[gates1979]

I am having a extension done and i am going to be making the bathroom into an en suite and putting a new family bathroom into a room at the front of the house. Who is responsible for putting in underground waste and inspection chamber is that a plumbers job or is it best to leave it for the builders to fit also does it have to be checked and passed off by bco

 

[moony]

ground workers should do it - i go from the ground up. but i could do it if asked but for the life of me you wouldnt get me digging the holes haha.