NCCER 02111 DWV 4.0 Quiz

The height above an established reference point, such as a grade reference point on a construction drawing.

• grade
• plane
• elevation
• offset

When referring to DWV and especially sewer systems, the slope of a run of pipe is ____.

• slope
• grade
• incline
• tilt

Semi-liquid matter that settles out in a holding tank during the waste treatment process.

• sliquid
• scum
• flurry
• sludge

Technically, the speed and direction of a moving object. Commonly used in place of speed for describing the motion of fluids in pipes.

• velocity
• speed
• friction
• resistance

Minimum velocity required to keep solids suspended and from settling in pipe is ____.

• 4 feet per second
• 8 feet per second
• 2 feet per second
• 5 feet per second

The _______ is the main horizontal pipe inside a building. It carries all sewage and other liquid wastes to the building sewer.

• public sewer
• building waste
• building sewer
• building drain
• smile waste

A ______ is the part of a drain pipe that extends laterally (sideways) from a soil or waste stack and receives the discharge from one or more fixture drains.

• fixture branch
• drain branch
• horizontal branch
• vertical branch

building sewers start ___ feet from building and tie into public sewer.

• 2 - 3
• 1 - 2
• 2 - 5
• 2 - 4

Manholes must be provided for underground piping that is ___ or larger in diameter.

• 4 inches
• 6 inches
• 8 inches
• 10 inches

Municipalities or towns usually install a 6" sewer laterally from the _______to the edge of each building lot.

• public sewer
• sewer main
• building sewer
• building drain