Liam Wrote:
Redoing ground floor bathroom. At present I have three seperate waste
pipes for water softener, basin and bath all going to a gully outside.
Would it be possible to run just one waste pipe with two branches
joining it to the gully, or would it cause problems with syphoning?
Each waste would have its own trap. Water softener has a washing
macine type waste with trap. Total run is about 2 metres and it is a
single stack waste system.
Thanks everyone.

Combining the wastes is fine but you should increase the size of the
main waste pipe to 2" to allow for the additional branches.


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Nick H