What should you ensure about the pitch of a drainage pipe?

The pitch of a drainage pipe is critical for proper drainage flow. Ensuring that it slopes towards the outlet allows gravity to effectively transport wastewater and prevent clogs. This sloping alignment facilitates smooth movement of water through the pipes. If the pitch is too level or sloping away from the outlet, it can lead to stagnation, where waste does not flow correctly and may accumulate, creating blockages and unpleasant odors. A correct pitch is vital for maintaining an efficient plumbing system that operates without issue over time.