Waste pipes

[scottygio]

I am getting my bathroom made bigger. My bathroom has a suspended floor which is approx 1 metre above ground level. The builder is installing a 110mm upvc pipe with a gradient of 1:80 horizontally below the floor. I have to connect my Wc suite into this horizontal soil stack.
The 110mm pipe has a boss connector which will allow me to hook up my bath and shower waste using 40mm plastic the compression pipe.
The sink is also to be connected into this stack but not at the boss connector. What size of pipe should this be?
The toilet is also to be connected into this stack? What size of pipe should this be?
A durgo air admittance valve is also to be installed so what size of pipe is to be connected to this.
My main worries are the angles and runs to the stack.
In the case of the toilet can you drop vertically right down through the floor and then make a slight decline down to the stack?
I have about a metre to drop before i can connect up to the stack and i'm just worrying how to get all the waste pipes into the stack without too steep an angle.
Any advice on this subject will be much appreciated

thanks

scott

 

[Softus]

The sink is also to be connected into this stack but not at the boss connector. What size of pipe should this be?

Assuming that you mean 'basin', rather than sink, then the answer is 32mm.

The toilet is also to be connected into this stack? What size of pipe should this be?

110mm.

My main worries are the angles and runs to the stack.
In the case of the toilet can you drop vertically right down through the floor and then make a slight decline down to the stack?

I have about a metre to drop before i can connect up to the stack and i'm just worrying how to get all the waste pipes into the stack without too steep an angle.

There's nothing to stop you dropping soil pipe (or a pan connector) vertically through a floor and then turning a bend either to connect to another branch or to create a branch that runs to a stack.

However, please clarify your question, bearing in mind that "stack" is an informal word for a vertical section of soil pipe, not a horizontal branch.

 

[scottygio]

thanks softus for your advice. Much appreciated

scott