Toilet discharge pipes

[crabbie]

Hi all.
I currently have a toilet in my bathroom and am building an en-suit next door to the bathroom. I want to put a second toilet in but want to know if I can plumb it in on the same discharge pipe as the bathroom toilet so effectively have 2 toilets on the same discharge pipe?

Also I am putting a shower and wash basin in the same room and want to know if I can plumb the shower and basin into the same waste pipe on 40mm or 50mm waste with an AAV on the basin waste trap.

Any pointers would be appreciated.

Thanks

 

[rocketmanbkk]

Do you have a builder doing the work? What about a plumber doing the hard stuff?

 

[Best]

Yes you can add a toilet to a 4" pipe no problem if you are carefull that one toilet won't flow into the other when flushed. That means keeping the level of connections different or lower than the pans usually.
The shower and basin will be no problem to add on. As you are rightly thinking, you have to be sure that the traps won't be sucked out when water is going down the waste and a Hep trap will prevent this. Keep basin waste and shower waste seperate pipes obviously

 

[Unregistered]

The toilet is already on a good drop, so was thinking of putting a T into it and running the new toilet pipework into it, this way it won't flow into the existing toilet, but past it. The shower and basin I'm thinking of running the shower waste past the basin and putting in a T to the basin and then running the single pipe out into the soil stack.

 

[rpm]

The toilet is already on a good drop, so was thinking of putting a T into it and running the new toilet pipework into it, this way it won't flow into the existing toilet, but past it. The shower and basin I'm thinking of running the shower waste past the basin and putting in a T to the basin and then running the single pipe out into the soil stack.

Is this crabbie or somebody else?

 

[crabbie]

Cabbie

 

[Best]

Best you don't join the basin and shower waste into one pipe, unless you are using a 4" pipe.

 

[Radioman]

If you are doing this new bathroom and are NOT registered as a competent person, eg with Benchmark or similar organisation, the installation of a NEW bathroom that either modifies existing plumbing work work or installs new plumbing including but not excluding connection to the sewage system is a notifiable job to Your local Building Control. The job must be reported to BC before commencement. For further information see https://www.gov.uk/government/uploa...604_Building_Work_Leaflet_amended_version.pdf

When you come to,sell the property, re mortgage or similar you will need to provide the certification from building control. Getting it signed off after the event is costly and sometimes not possible. We recently got to within 5 days of exchange of contracts on a purchase to find that a new wet room created as an en suite had not been signed off by BC. Long story short, plumbing and electrics where incorrect the room had to be re done losing the vendor £10,000.