soil stack

Wondering if you drainage experts could advise me please. I changed a flat roof to pitched, and along with a reworked bathroom, the soil stack needs to move. Where the soil pipe comes through the bathroom wall, my idea was to use an air admittance valve and box the whole soil stack into the...

Sorry for the stupid question but could someone please tell me how to open this inspection cover. I can twist it about half an inch (anti-clockwise) and see that it has some kind of locking mechanism. But I cannot figure out how to unlock it. I see the "locking screw" text, but cannot figure...

Afternoon All, I have a detached garage which I wish to have a waste pipe installed in for a dog grooming bath. The new build house has an internal soil stack in the corner closest to the garage. Plan is to dig up the garden alongside the garage and run a 6m long soil pipe just under the house...

Building regs H 2015 says WC branch pipe can have a slope of 18-90mm/m (page 9) which works out as ~1 deg to ~5 deg. Floplast, for example, do stack connections at 87.5 deg (-2.5deg) and 67.5 deg (-22.5) and 45 (-45 deg). Only the first of those meets the regs H so what am I missing? Or can I...

hi there. I've just purchased a house. It has an internal soil stack which passes vertically through the house and emerges through the flat roof whereupon it vents. Currently, the bathroom is on the top floor and the waste connects directly into that soil stack (which is boxed in). I want...