I am extending my shed and adding an outside Bathroom, with a toilet, shower and basin. The flooe will be poured concrete. My questions are
1. Do I need to cover the Pipe before I pour the concrete
2. What drop / sloop needs to be in the waste pipe
3. How far should the waste pipes be below the concrete slab?

Drain pipes that carry poopies have a minimum of 1/8 inch per foot slope [fall]. Drain pipes that do not carry poopies must have a minimum of 1/4 inch per foot fall. You need 4 inches of fill dirt on top of the pipes. You need a minimum of 3 1/2" of concrete thickness. i personally do no cover drain pipes that penetrate vertically through concrete. the toilet must be a minimum of 3" through out.

Doug238,
Thank you for your help.
I had intended pushing the outlet pie up against the Footing boards with the Female end pointing out so that I can fit the next set of pipes in.

Is that how you would recommend or should I try to have the waste pipes running through the waste pipes running through to footing extending beyond the edge.

Quote:

---

Originally Posted by Robin Stinson

Doug238,
Thank you for your help.
I had intended pushing the outlet pie up against the Footing boards with the Female end pointing out so that I can fit the next set of pipes in.

Is that how you would recommend or should I try to have the waste pipes running through the waste pipes running through to footing extending beyond the edge.

---

When we run bell and spigot pipe the spigot end goes with the flow. In other words it goes like this. Hub**spigot**hub**spigot and so on.
You're proposing to install it backwards. Good luck, Tom

A pipe installed horizontally through a footer must be sleeved with something at least 2 pipe sixes larger than your pipe in case of the footer settling.