Horizontal soil pipe run between joists
- Thread starter dextur
- Start date
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Discharge into a Tee is OK. I have refitted a fairly new house bathroom that was plumbed in that way and there were no old or new problems
But if you have enough space I think the 135 tee with a 45 bend is better
http://www.ebay.co.uk/itm/uPVC-Soil-Pipe-110mm-Y-Branch-White-/110392247034
Even better if the 135 Tee can be laid flat with the bath joining on the branch and the WC via a 90 degree into the main line.
Can the bath be run parallel to the Soil pipe to join the stack separately and so avoid the junction?
The only other comment I would make is that I try to use solvent weld fittings in such concealed spaces as they are more fit and forget with no ring seal issues to worry about in the future. If you must use ring seal then adequate support should be made to ensure the more flexible jointed system cannot "settle" and create a problem later.
But if you have enough space I think the 135 tee with a 45 bend is better
http://www.ebay.co.uk/itm/uPVC-Soil-Pipe-110mm-Y-Branch-White-/110392247034
Even better if the 135 Tee can be laid flat with the bath joining on the branch and the WC via a 90 degree into the main line.
Can the bath be run parallel to the Soil pipe to join the stack separately and so avoid the junction?
The only other comment I would make is that I try to use solvent weld fittings in such concealed spaces as they are more fit and forget with no ring seal issues to worry about in the future. If you must use ring seal then adequate support should be made to ensure the more flexible jointed system cannot "settle" and create a problem later.
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there is a possibility of laying the tee flat and putting a singled ended elbow in to the tee. It's just a standard tee branch I have in, not a 135 degree tee. Is discharging straight in to a standard tee branch laid horizontally as shown in the picture ok?
its fine, dont over think it, and forget the 135 ideas... fitted literally 100's of stacks like that (new builds so NHBC inspected and drain tested)
Think about it the water isnt going to run up hill then jump 40mm so and to get into the bath waste (that will enter center of the 110mm socket) then run uphill again when the other option is to run down a 110mm tube....
Think about it the water isnt going to run up hill then jump 40mm so and to get into the bath waste (that will enter center of the 110mm socket) then run uphill again when the other option is to run down a 110mm tube....
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newgasinstaller Good to hear it is common practice will no problems.
Like the OP I had reservations about dropping soil waste on a vertical junction where it seemed there could be a risk of it not flowing away and you might then rely on the flow from the bath to flush away any potential deposits. It certainly was working OK in the small House I refitted where it was the only bathroom and so the bath /shower was in regular use.
Like the OP I had reservations about dropping soil waste on a vertical junction where it seemed there could be a risk of it not flowing away and you might then rely on the flow from the bath to flush away any potential deposits. It certainly was working OK in the small House I refitted where it was the only bathroom and so the bath /shower was in regular use.
Thanks for the reply, I was worried about it settling in the tee and not flowing away.
if you dropped a turd dry in the tee it wouldnt go anywhere, add a cistern full of water to it and away it goes 
and the tees are swept like a elbow (just with a branch on the end)
if you dropped a turd dry in the tee it wouldnt go anywhere, add a cistern full of water to it and away it goes
I understand the BRE are now going to ask for volunteers to donate samples to test this theory as soon as they have a transparent sample of the fittings available Even if its laid horizontally? The toilet waste will be entering in to the branch of the horizontal laid tee.
http://www.drainageonline.co.uk/110mm-Push-fit-Soil/110mm-Soil-Branch-92.5dg.htm
The branch is swept to the same extent as a elbow.
Water follows gravity so if the soil is laid with the correct fall it will run away fine.
What happens if you had multiple toilets in a row? run each its own 110mm soil or branch off one?
The branch is swept to the same extent as a elbow.
Water follows gravity so if the soil is laid with the correct fall it will run away fine.
What happens if you had multiple toilets in a row? run each its own 110mm soil or branch off one?
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