I’m in the planning phase for some house alterations and would appreciate any advice concerning the plumbing installation for an additional 1st floor bathroom.
The images attached show the existing layout and new layout proposed. In summary, I want to build a second (first floor) ensuite bathroom next to the existing main bathroom. The building work will require the removal of the existing 110mm soil pipe, which receives the water waste flow from both the hand basin and shower via separate 40mm pipes. The building work means that the waste outlets from the existing bathroom need to be extended by approx. 4m to the closest new location for the 100m vertical soil pipe.
View attachment Existing bathroom.JPG
View attachment New bathroom.JPG
My main questions are;
1. Joining the new wastes..Is it acceptable for me to just join the new ensuite waste outlets to the extended existing outlets