Bath waste

[Graham Taylor]

Hi all, at the moment we have a shower/wet room. We want to install a bath but I'm having a problem as to where the waste from the bath can go, as by doing a bit of research the shower waste will not be able to take the bath wath water away quickly enough.
Landlord will not permit us to drill through the outside wall so my question is- can I connect the waste from the bath into the waste from the toilet (see photo) or can this cause problems I am maybe unaware of.
There is approx 100mm from floor to where the bend meets the downpipe to enable me to use a boss to connect bath waste pipe.
cheers Graham

 

[Ben-gee]

Yes you can boss it into that vertical brown pipe.

1) You must use a 76mm water seal trap on the bath, not a shallow trap - even though that would be easier.

2) you may find that the brown pipe won’t solvent weld very well. So I would a) get a strap boss that has a nut/bolt connection, b) connect flange of boss to the pipe with CT1 instead of solvent weld.

3) make sure you don’t insert pipe from bath waste too far- if it goes inside the 4” pipe it will catch paper etc from the lavatory, which will give you grief.

 

[Graham Taylor]

Cheers for that Ben-gee, much appreciated

 

[Graham Taylor]

Yes you can boss it into that vertical brown pipe.

1) You must use a 76mm water seal trap on the bath, not a shallow trap - even though that would be easier.

2) you may find that the brown pipe won’t solvent weld very well. So I would a) get a strap boss that has a nut/bolt connection, b) connect flange of boss to the pipe with CT1 instead of solvent weld.

3) make sure you don’t insert pipe from bath waste too far- if it goes inside the 4” pipe it will catch paper etc from the lavatory, which will give you grief

 

[ShaunCorbs]

Can you tell me what CT1 is please, cant get a plumber until well after xmas so I'm a sparky doing a diy job, cheers

it’s a type of silicon

or mcalpine make compression boss

eg

Two Piece Cast Iron Soil Pipe Boss Connector | McAlpine Plumbing

Upgrade your soil pipe connections with the Two Piece Cast Iron Soil Pipe Boss Connector, ensuring durability and efficient water flow.

mcalpineplumbing.com

 

[Graham Taylor]

it’s a type of silicon

or mcalpine make compression boss

eg

Two Piece Cast Iron Soil Pipe Boss Connector | McAlpine Plumbing

Upgrade your soil pipe connections with the Two Piece Cast Iron Soil Pipe Boss Connector, ensuring durability and efficient water flow.

mcalpineplumbing.com

Cheers for that info ShaunCorbs, much appreciated