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Plumbing in sink waste into soil pipe
I am renovating our bathroom and have moved positions of toilet and sink. The sink waste was plumbed into the soil pipe downstream of the toilet and entered at the top of the soil pipe. To reposition the toilet I have shortened the 110 mm soil pipe but left the section where the sink waste entered in downstream of the of the toilet. I have rotated this section through 90 degrees so that the 32mm connector is on the side of the soil pipe. Then I have run the sink waste (32mm) pipe under the floor and into the side connection of the soil pipe. I want to know if the method is acceptable? I am aware from what I have read that siphoning may be a problem and that the water am be sucked from the sink trap? Would the fitting of an anti siphoning trap to the sink solve this problem? Once connected the floor will be tiled over so I want it to be bomb proof.
The soil pipe I am talking about is in a upstairs bathroom, in a modern house (13 years old) it is vented from the top of the pipe and the run from the toilet to the vertical drop is only about 3 foot. Thanks in advance for any advice given. I have photos if it helps? Cheers steve |
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