Drainage Piping and Fittings
Understand the types of pipes used underground, within a building, above grade, and in agreement with code; Install cast iron, steel, plastic or other approved drainage piping; Pitch pipes for proper drainage; Use recessed drainage fittings and determine number of hangers required by certain size waste lines; Know the types of pipe and fittings and proper use for DWV; Know the workings of septic tanks and systems; Know the methods for testing pipes for leaks