Plumbers install plumbing systems in individual buildings, requiring knowledge of specialized tools, materials, and techniques. Their work involves planning pipe layout, cutting and joining pipes, and installing fixtures. Apprenticeships provide several years of classroom and hands-on training in plumbing codes, drafting, math, safety procedures, and basic tasks, before apprentices take on more complex skills and responsibilities. Prospects for plumbers are excellent due to the physically demanding nature of the work and projected high demand for plumbers.