1. Metals that oxidize when exposed to air. 2. Any metal whose hydroxide is soluble in water forming a solution of a base. 3. the chief constituent of an alloy. 4. the metal to which a coating of plating is applied.
A device for the measurement of pressure in pipes, or conduits, consisting of a vertical transparent tube which is connected at its lower end to a piezometer orifice in the wall of the pipe, or conduit, and is open to atmosphere at its upper end. The height to which fluid rises in the tube is […]
A thread on a pipe or nipple which is out of alignment. Sometimes this is done purposely to connect pipes which are out of alignment. Also called drunken thread.
A septic tank effluent soil absorption system such as a seepage bed or seepage trench.
1. The backflow of possible contaminated water into the potable water supply system or the potable water distribution systems as a result of the pressure in the potable water system becoming unintentionally less than the atmospheric pressure in the plumbing fixtures, pools, tanks or vats that may be connected to the potable water distribution system […]
A branch vent that serves two or more traps, or fixtures with integral traps, that are battery wasted. Said vent extends from the top of the horizontal soil and/or waste branch in front of the last fixture waste to a vent stack adjacent to the upstream end of the horizonal branch
A vent pipe connected to a horizontal drainage pipe receiving the discharges from one, or more, unvented fixtures. The vent pipe rises above the overflow level or flood rim of the highest fixture connected to the vented drainage pipe, and the vent pipe is connected to a vent stack.