OWP will be closed from 4:00 pm on Friday, December 20, 2024, until 8:00 am on Thursday, January 2, 2025, for Winter Break.
(All times are PST.)

If exams are submitted:	Course certificates will be mailed:
By December 13th	By December 20th
After December 20th	Early January

Please note: Postmark dates will not be honored.

Water and Wastewater Terms Beginning B

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

bedding grade

(1) In a gravity-flow wastewater collection system, pipe bedding is constructed and compacted to the design grade of the pipe. This is usually expressed as a percentage. A 0.5 percent grade would be a drop of 0.5 feet per 100 hundred feet of pipe. (2) Bedding grade for a gravity-flow wastewater collection pipe can also be specified as elevation above mean sea level at specific points.