plumbing help needed

moneyspender1981

Hi,
I am trying to plumb in my new bath suite. after a set back money wise means I cant afford a plumber to fit it.


advice required....
The sink waste pipe was originally running on top of the floor, but I decided it would look nicer underneath the floor boards out of the way. The only problem is when it gets to the soil pipenm i have to put a 90 degree bend on to go up approx 3 inches to get to the original soil pipe exit... hope this makes sense, basicly I have to raise the pipe back above the floor when it gets to the soil pipe.
Only prob is will I always have stading water? How can I solve this ?
Any advice much appreciated.

Sailor_Sam

I don't think you could run your outlet upwards, as you say that would mean, a sort of second trap, does'nt sound like a good idea. Only alternative seems to be cut into the soil pipe a bit lower down. I think if it were me, i'd be asking at the plumbers for a plug to block off, where the origional outlet went into the soil pipe, and then do they have a sort of ' Y ' section of soilpipe, for the new outlet to fit into. This could go anywhere further down the pipe, wherever is convenient. This is presuming you have plastic pipes, if you have old cast iron ones, it will still be feasible, but more difficult. Good luck.

andrew-b

This article should be very useful to you: http://www.diydata.com/plumbing/waste_connecting/waste_connecting.php

In particular note: "All the pipe runs must have a downhill slope to avoid water collecting in the run, allow for at least a 18mm fall in for every metre of pipe run".

Our existing shower waste goes very slightly uphill for a short distance (but nowhere near the same uphill distance that you would have) and is almost level for a large part of it's route. Mine is ground floor bathroom with concrete floors though with the waste going into a gully outside rather than a soil pipe so access to unblock if needed would be far simpler. When i open up a rodding eye in the pipework there's standing water in there and smells quite bad. In the two years we've lived here we haven't had a blockage yet but the water does drain quite slowly from the shower tray (i doubt it would cope if we had a power shower!). I'm intending to reroute the waste pipe to remove the uphill section as part of a bathroom refit but i'm still unlikely to get the 18mm per metre fall but it should be better than it currently is.

If i were you i'd revert to the way it was previously done (particularly if the soil pipe is cast iron) and then maybe box the waste pipe in to make it look a bit nicer. Messing about with soil pipe is just going to complicate things and it's easier working in the bathroom than hanging to a ladder outside!

Saniflow (and similar) have suitable pumping solutions but it seems OTT for your case (or mine) with potential for more to go wrong plus you need electricity supply for it.

Andy

adaze

As has already been said, join onto the soil pipe lower down, or even outside if there is anything to connect to?