Bathroom waste run?

[Super_Paulie]

im looking at potential layouts for my small, 2.2m x 2.xm bathroom. Before i offer up any designs to the missus, would a run of the 110mm waste like this be ok? im not 100% on this, but if i can move the bog to under the window then i will. It just means i guess 3x bends to get to the stack, which is all internal and the horizontal is around 2m. No access to any outside wall or underneath. 

 

Any thoughts guys?

 

Edited 10 hours ago by Super_Paulie

[Nickfromwales]

1 hour ago, Super_Paulie said:

im looking at potential layouts for my small, 2.2m x 2.xm bathroom. Before i offer up any designs to the missus, would a run of the 110mm waste like this be ok? im not 100% on this, but if i can move the bog to under the window then i will. It just means i guess 3x bends to get to the stack, which is all internal and the horizontal is around 2m. No access to any outside wall or underneath. 

 

Any thoughts guys?

 

Perfectly acceptable. Carry on.

 

Run 50mm waste for the shower for that distance, and 40mm for the basin; reduce that to 32mm on the outlet of the last 40mm bend. Discharge will be much better than using 32mm to the basin from the stack 👌

[Super_Paulie]

33 minutes ago, Nickfromwales said:

Perfectly acceptable. Carry on.

 

Run 50mm waste for the shower for that distance, and 40mm for the basin; reduce that to 32mm on the outlet of the last 40mm bend. Discharge will be much better than using 32mm to the basin from the stack 👌

good man and good news.

One issue ive got, the stack. To be able to add in the addition lower connection for the shower id have to cut off the socket. The rest of the soil past joist level is already in-situ and i simply cant get to it without major surgery, i can only see the very top before the branch. If i cut off the female socket, remove 4 inches of pipe, whats my best option to add in the first branch to the stack? Solvent weld-to-socket? Female-to-female branch? Anything "on the outside" of the pipe seems a risk.

 

This is the current setup, socket on soil then the branch.
Second image is what i need to achieve. 

 

Edited 8 hours ago by Super_Paulie

[kandgmitchell]

How deep are those joists - just thinking about you cutting a 50mm waste with a fall across them

[Super_Paulie]

4 minutes ago, kandgmitchell said:

How deep are those joists - just thinking about you cutting a 50mm waste with a fall across them

An option is a raised tray and once i get to the left hand wall there is maybe 80mm gap between the brick and the first joist so im good once im there.

The joists are 170mm. Ive levelled them as the house sunk onto the beam when the house became open plan, with 20mm timber down at that end fading to 0 at the opposite end. Plus 22mm chipboard and 6mm ply. I was planning on notching all of the above which will give me roughly 70mm to play with if i run the waste close to the outside wall i dont need the subfloor covering as that wall will be studded out anyways. A raised tray is not out the question for me though, havent looked into it yet. Just at rough planning here.

[Nickfromwales]

6 hours ago, Super_Paulie said:

good man and good news.

One issue ive got, the stack. To be able to add in the addition lower connection for the shower id have to cut off the socket. The rest of the soil past joist level is already in-situ and i simply cant get to it without major surgery, i can only see the very top before the branch. If i cut off the female socket, remove 4 inches of pipe, whats my best option to add in the first branch to the stack? Solvent weld-to-socket? Female-to-female branch? Anything "on the outside" of the pipe seems a risk.

 

This is the current setup, socket on soil then the branch.
Second image is what i need to achieve. 

 

Something like this?

 

https://www.screwfix.com/p/floplast-push-fit-3-boss-single-socket-pipe-grey-110mm/18246?msclkid=842481fd35ec11702792ebfa4ba05dd8&utm_source=bing&utm_medium=cpc&utm_campaign=Bing_UK_Shopping_PMax_Heating %26 Plumbing&utm_term=2331720565763883&utm_content=Heating %26 Plumbing&gclid=842481fd35ec11702792ebfa4ba05dd8&gclsrc=3p.ds&gad_source=7&gad_campaignid=22478593832

[Nickfromwales]

Or this...

 

https://www.screwfix.com/p/floplast-solvent-weld-3-boss-double-socket-short-pipe-grey-110mm/17138

 

....if you need to glue it and push it down from above.

[Super_Paulie]

33 minutes ago, Nickfromwales said:

Or this...

 

https://www.screwfix.com/p/floplast-solvent-weld-3-boss-double-socket-short-pipe-grey-110mm/17138

 

....if you need to glue it and push it down from above.

 

It's more the cutting off the socket on the stack and then how to convert that "back into" a socket really, not sure if trust myself with a branch welded on incase I need to adjust the direction slightly. Would you recommend a solvent weld-to-socket? 

 

https://www.screwfix.com/p/floplast-push-fit-solvent-weld-single-socket-pipe-coupler-grey-110mm/13738

[Nickfromwales]

28 minutes ago, Super_Paulie said:

 

It's more the cutting off the socket on the stack and then how to convert that "back into" a socket really, not sure if trust myself with a branch welded on incase I need to adjust the direction slightly. Would you recommend a solvent weld-to-socket? 

 

https://www.screwfix.com/p/floplast-push-fit-solvent-weld-single-socket-pipe-coupler-grey-110mm/13738

Yup. Or just a regular double socket connector needing zero glue? 

[Super_Paulie]

13 minutes ago, Nickfromwales said:

Yup. Or just a regular double socket connector needing zero glue? 

 

Do you trust them? Seemed like not having the socket around the outside of the bottom of the branch is asking for leaks.