Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Arranging and venting a waste pipe branch

View the thread, titled "Arranging and venting a waste pipe branch" which is posted in UK Plumbers Forums on UK Plumbers Forums.

I recently got ground floor piping extended to have drain, hot and cold in a first floor room. Only the pipes are there, but I'd like to install a sink and a washing machine as from the diagram.

https://i.stack.*********/Zngwd.png

Note that the washing machine will be at a higher level, because it will be placed on a riser about 1m higher than the floor level.
The drain pipe distance between the new sink and the lower floor sink is about 7-8 metres, while that between the new washing machine and the new sink would be about one metre.

Questions:

1) How do I arrange traps? I plan to place one under the new sink, but should it also serve the washing machine or the latter would need a separate one? And would it be wiser to buy resealing ones?

2) Should I add an aav valve, given that the branch is now pretty long (around 10 metres)? If yes, where to place it?

3) Do you see any foreseeable problem with this setup, either practical or regulation-wise? (I'm in Scotland)

Thanks!
 
The way I’d look at it would be that the wm will have lots of cr@p going down the pipe and it has the longest distance to go. Hence I’d be upsizing to prevent blockage
 
Riley is giving you good advice based on experience, if this exceeds any regs you may have read- don’t worry about it - the small extra cost is worth it for trouble free usage. You don’t want waste pipework on the limits of its capabilities, it will always give trouble in time.
 

Official Sponsors of Plumbers Talk

Reply to the thread, titled "Arranging and venting a waste pipe branch" which is posted in UK Plumbers Forums on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Thread statistics

Created
phloaw,
Last reply from
Harvest Fields,
Replies
11
Views
2,069
Back
Top