RaceDiagnostics
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I'm planning to add something like this for my new WC waste but it looks a bit cluttered, any other suggestions.
Don’t bother with the 2nd stack , run the waste accros from existing stack , tee up to kitchen , then along to bathroom , use 4 x 45 degrees bends to sweep around the rain water .. with a tee and rodding point at the top of the run
I drew it horizontals , as easier that including the correct run . But you get the idea
I’d be suprised if the main line , below ground was less that 110 , if you have a careful dig around you’ll probably find the existing cast down pipe just stuck into the 110 and flaunched over .I could also relocate the rainwater pipe to the other side of the window over to the righ to overcome the problem of it being in the way. There will be another issue that the existing sink stack is only about 60mm or so, so will not be big enough for the WC pipe. I expect that the under ground run to the main sewer will also be small bore so would not be suitable.
I could of course dig it all up and change it to 110mm as I need to dig a trench to the sewer anyway.
At the moment the entire back yard is paved over with no sign of a manhole cover or where the sewer run is.
I'm planning to add something like this for my new WC waste but it looks a bit cluttered, any other suggestions.
dig and find your pipes before you start planning anything
You can do this but they do wear and sometimes they not only admit air but also emit smells until you help them seal againair admittance valve inside the building beside the WC
It would still need an air admittance valve as the horizontal length is enough the suck the trap out of the sink when flushing the toilet. Also the toilet would probably "glug"
4.2 System types
The systems may be divided into four system types, although there are variations in detail within
each system type [hence the need to refer to the national and local regulations and practice listed in
annex A (informative)].
System I Single discharge stack system with partly filled branch discharge pipes
Sanitary appliances are connected to partly filled branch discharge pipes. The partly
filled branch discharge pipes are designed with a filling degree of 0.5 (50 %) and are
connected to a single discharge stack.
System II Single discharge stack system with small bore discharge branch pipes
Sanitary appliances are connected to small bore branch discharge pipes. The small
bore branch discharge pipes are designed with a filling degree of 0.7 (70 %) and are
connected to a single discharge stack.
System III Single discharge stack system with full bore branch discharge pipes
Sanitary appliances are connected to full bore branch discharge pipes. The full bore
branch discharge pipes are designed with a filling degree of 1.0 (100 %) and each
branch discharge pipe is separately connected to a single discharge stack.
System IV Separate discharge stack system
Drainage systems type I, II and III may also be divided into a black water stack serving
WC’s and urinals and a grey water stack serving all other appliances.