ABSTRACT
Plumbing involves three general tasks: bringing water and gas to a building, supplying and installing fixtures, and conveying the discharged water and waste from the building. Plumbing materials, fixtures, and associated equipment are usually defined in the specifications. The materials include various types and sizes of pipes, fittings, valves, fixtures, and accessories, which are more fully described later. Water usually is obtained from a water main, whereas the waste is collected from a building and discharged into a sanitary sewer line. Plumbing can be classified as piping for potable water purposes, and plumbing for waste
disposal purposes. Piping can refer to any carrier of potable water including fixtures and accessories from the water treatment, filtration, and purification plants. Plumbing can refer to any pipe or fixtures installed for the express purpose of waste disposal. In this text, however, plumbing refers to rough and finish plumbing.
