Glossary of Water and Wastewater Terms

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5 random terms from our glossary

impregnate

To saturate or fill. For example, as part of the cured-in-place pipe (CIPP) process, felt is saturated or impregnated with a resin.

grade

(1) The elevation of the invert (or bottom) of a pipeline, canal, culvert, or similar conduit. (2) The inclination or slope of a pipeline, conduit, stream channel, or natural ground surface; usually expressed in terms of the ratio or percentage of number of units of vertical rise or fall per unit of horizontal distance. A 0.5 percent grade would be a drop of 0.5 feet per 100 hundred feet (0.5 meters per 100 hundred meters) of pipe.

vertical offset

A pipe joint in which one section is connected to another at a different elevation, such as a drop joint.

cation exchange capacity (KAT-EYE-en)

The ability of a soil or other solid to exchange cations (positive ions such as calcium, Ca2+) with a liquid.

rotor

The rotating part of a machine. The rotor is surrounded by the stationary (nonmoving) parts (stator) of the machine.