Toilet waste pipe incline

[klg638191]

By what incline should a waste pipe be (taking in a 90 degree bend around a corner also) from the back of the toilet to the main waste outlet?

 

[amtodd]

Depends on how long it is. See page 4 of the building regulations part F (drainage) for this.

http://www.safety.dtlr.gov.uk/bregs/pdf/adh/adh02.pdf