Bathroom refit order

[markyyyyyy]

My mind is a boggle with everything I've got on the go at once.

Currently my floor is up and joists exposed as I am levelling it. I am installing a new bathroom comprising of a 1200. X 700 shower tray/enclosure, a wall hung semi pedestal (going on stud wall) and a new toilet remaining in same place as it is now.

Can I just confirm the order of everything?

As my floor is exposed joists, I plan on first fix water supply and bringing the pipework up through the floor alongside stud wall as I will be boxing in the water pipes and shower waste pipe.

I assume I install noggins for semi pedestal before boarding up?

I want to bring my basin waste down into my shower waste. Should my basin waste be 32mm pipe? And shower waste 40mm? Is there a t connector you can get to connect my vertical 32mm pipe into a horizontal 40mm pipe run?

On a semi pedastal i believe the waste pipe will run down through stud wall - then do I bring the waste out of the wall and connect into horizontal shower run at floor level so it will be boxed in?

 

[foxhole]

Reducer is available so you can run smaller waste to larger in T joint .For wall mounting on stud work I would fit 18mm ply between uprights to increase strength and ensure you have good fixing anywhere on the wall .
Will the shower waste not run under floor? So sink waste will connect under floor as well .

 

[markyyyyyy]

Reducer is available so you can run smaller waste to larger in T joint .For wall mounting on stud work I would fit 18mm ply between uprights to increase strength and ensure you have good fixing anywhere on the wall .
Will the shower waste not run under floor? So sink waste will connect under floor as well .

Thanks for your help. So do I fit the ply to the studs as if installing plasterboard? Or do I have to recess it back a bit to make flush with p/board?

I posted a separate on the waste - there is adequate room in the joists to run the waste pipe but it will be very awkward to move the exit from the house lower, as it goes into a hopper and the angle will be horizontal if I drop the exit lower.... Could I run it under the floor and make an s bend or use Flexi hose bringing it out from the floor into the waste pipe outside?. If that makes sense?

 

[foxhole]

Ideally keep ply flush so recess it, much stronger and easier than hoping you get stud in the right place.Cant comment on pipe run , don’t know your layout.