Can a Toilet Drain Pipe Go Straight Down?
Seeking clarity on Can a Toilet Drain Pipe Go Straight Down? We break down the key details in simple terms.
The most important bit of obvious advice ever: soil and waste pipes need to be on a downhill gradient! The "fall" or "drop" should be between 1/40 (1cm down for every 40cm across) and 1/110. Too steep (1/10) then the water runs quicker than the solids so doesn't wash them away (ugh!).