DWV

A_____ is a measure of the probable discharge of wastewater and waterborne waste into the drainage system by various plumbing fixtures.

• drainage fixture unit

• change in direction

• trap seal loss

• branch interval.

Discharge capacities for diffrent sizes of horizontal drainage pipes are typically found in_____.

• plumbing codes

• water tables

• fixture trap to vent distances tables

• common vent tables

A building drain should not be less than____" in diameter if it receives the discharge of three or more water closets.

• 2

• 3

• 4

• 8

In general, one branch interval equals____ floor(s) of plumbing fixture drains.

• one

• two

• three

• four

A_____ vent is the principal artery of the vent system to which branches may be connected.

• wet

• back

• main

• relief

A_____" cleanout is typically the largest size cleanout installed in a sanitary drainage system.

• 3

• 4

• 5

• 6

A properly installed vent system provides air circulation within sanitary drainage piping and ensures that trap seals will not be subject to a pressure.

• 1

• 2

• 3

• 4

The most common individual vent is a ____ vent.

• roof

• continuous

• relief

• stack

______ pipes convey discharge containing fecal matter from water closets or similar fixtures to the building drain or building sewer.

• Vent

• Waste

• Storm

• Soil

Changes in _____ affect the discharge capacities of drainage pipes and were considered in the design of sizing tables.

• Direction

• material

• grade

• all of the above