Bob Minchin wrote:

The Natural Philosopher wrote:


grimmy wrote:


Hi group...

My Dad currently has an en-suite bathroom powered by a macerator.
However he wishes to convert this to a normal flush only, but is
concerned about the required fall for the waste pipe. Does anybody
know what the required angle of elevation is for the waste pipe of a
flush toilet?


1:100 minuimum 1:60 ideal from memory.

There's other issues as well- best consult an architect or decent
builder, or look up the building regs...you need biogger pipes than the
macerator as well, and where they join the downpipe is subject to issues
to avoid blowback into the bath etc :-)


thanks to anyone who takes the trouble to respond.

regards


paul



Standard fittings, (branches, bends etc) all have 92.5 or 87.5 degree angles
so I assume the fall should be 2.5 degrees.

Bob


which is 1:22

That is way more than is required.