Adding WC and Basin to Soil Stack - Will This Comply With Regulations?
Drainage and wastage systems and plumbing help, advice and answers

3 posts   •   Page 1 of 1
Mark_c
Labourer
Labourer
Posts: 2
Joined: Fri Apr 03, 2015 10:25 pm

Adding WC and Basin to Soil Stack - Will This Comply With Regulations?

by Mark_c » Sat Apr 04, 2015 9:42 am

Hi, I have a shower room next to my bedroom and would like to add a WC and basin. The shower waste is connected by approximately 2.5 metres of 40mm pipe which goes through the wall to a boss connection at the top of the soil stack in the eaves of the roof with an AAV as shown in the photo. To add the WC and basin I understand that I will need to increase the height of the stack vent so that it is higher than the basin overflow but unfortunately there is no space above the AAV. Therefore I was planning to replace the boss connection with a 92.5 degree bend which will then run approximately 2 metres to the WC (in the same direction as the current shower waste). At 1 metre I was going to add a soil branch which will provide a vertical vent pipe around 1 metre long with the AAV at the top. The basin and shower waste will be teed together and fed in at the soil branch.

Does this approach comply with regulations? Is it sensible? Any advice/suggestions would be much appreciated!
Attachments
Picture11.jpg

plumbbob
Project Manager
Project Manager
Posts: 1892
Joined: Wed May 07, 2008 10:59 pm

Re: Adding WC and Basin to Soil Stack - Will This Comply With Regulations?

by plumbbob » Mon Apr 06, 2015 10:23 am

Certainly, as long as the stack remains vented, and the vent is above the height of the basin then that will be satisfactory. What you suggest will be fine.

Mark_c
Labourer
Labourer
Posts: 2
Joined: Fri Apr 03, 2015 10:25 pm

Re: Adding WC and Basin to Soil Stack - Will This Comply With Regulations?

by Mark_c » Fri Apr 10, 2015 6:54 pm

Thanks plumbbob!!

3 posts   •   Page 1 of 1
It is currently Tue Feb 27, 2024 8:01 am