View Full Version : toilet drainage

03-22-2008, 08:58 AM
I am fitting a toilet into an En Suite bathroom and need to put in 3inch drainage pipe over a distance of about 20feet in the concrete floor what height do I need to drop the pipe in order to ensure the best drainage for the toilet into the sewer outside

03-22-2008, 09:11 AM
A 2% grade, or 1/4" per foot.

20 feet = 5" drop

03-22-2008, 09:27 AM
Thanks for the quick reply

03-22-2008, 09:31 AM
I have been told that its best to use the traditional type flushing toilet rather than a mascerator as these tend to get blocked and jam up regularly is this true

03-22-2008, 10:49 AM
Anytime you can drain your waste by gravity, it's better than pumping it.