WC Question to you DIY`ers or proffessional plumbing executi

[closetotheedge]

Want to add some extra toilets in new house.

The current one is in up stairs bathroom, as is normal.

Want to add two extra in en-suites upstairs and another one in downstairs in a new cloakroom.

Downstairs is straight forward as will go right next to soil pipe. However, the two new ones upstairs in the new en suites will be near soil stack but on same level as the original one in the bathroom. I have read that there should be 8" between vertical connections to soil stack from WC's, I cannot achieve this with 3 WC's at the same level. Can I use one connection to the soil stack to feed all 3 wc's??? i.e run a 4" pipe around the rooms at a slight incline from the soil stack to the last WC with a Tee to the first and second ones? How do HOTELS do it with so many WC's on one level???

 

[TexMex]

I have read that there should be 8" between vertical connections to soil stack from WC's, I cannot achieve this with 3 WC's at the same level.

Yes you can, Since they are at different distances from the soil pipe, if you use an angled branch down to the soil pipe, they will each meet at different heights ie.[code:1] ||
* * || *
\\ \\ || //
\\ \|| //
\\ || //
\\ ||/
\\ ||
\||
||
||[/code:1]

 

[closetotheedge]

Thanks Texmex, what a result!