toilet drainage

[martinrbrooks]

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

[Terry]

A 2% grade, or 1/4" per foot.

20 feet = 5" drop

[martinrbrooks]

Thanks for the quick reply

[martinrbrooks]

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

[Terry]

Anytime you can drain your waste by gravity, it's better than pumping it.