```Duties```. As an Apprentice Plumber, you will be responsible for assisting in the installation, repair, and maintenance of plumbing systems. Your duties will include. Assisting journeyman/journeywoman plumbers in installing and repairing plumbing systems. Learning to read blueprints and specifications to determine layout of plumbing systems. Assembling and installing pipes, valves, fittings, and fixtures. Cutting and threading pipes. Testing p...