UPC Chapter 9

Vent pipes protect fixture traps against ______.

• Evaporation
• Siphonage
• Clogging
• Cross-connection

In the above sketch, the primary settling tank ______.

• Requires a backwater valve
• Requires a vent pipe
• Is correct as shown
• Does not require a cleanout

Under certain conditions, traps serving sinks that are part of the equipment of bars, soda fountains, and counters ______.

• Need not to be vented
• Shall be vented
• May be wet-vented
• Need relief vents

One factor for determining the size of a vent pipe is ______.

• It's accessibility
• It's length
• The type of building
• The price of material

The combination of vent pipes that will provide sufficient aggregate cross-sectional vent area for required a 4 inch house sewer is _______.

• 1- 2 inch and 4- 1 1/2 inch
• 2- 2 inch and 1- 2 1/2 inch
• 3- 2 inch and 1- 1 1/2 inch
• 4- 2 inch

The maximum horizontal length permitted for a required 2 inch vent pipe is ______ feet.

• 20
• 40
• 60
• 120

The diameter of an individual vent shall not be less than ______ inches.

• 1 1/4
• 1 1/2
• 2
• 3

The distance "X" in the sketch above shall be at least _____ inch(es).

• 1
• 2
• 6
• 12

The acceptable method for connecting a vent pipe to a horizontal drain pipe is shown above by sketch(es)  ______.

• A
• A and B
• B
• B and C

The vent pipe opening is above the weir of the trap in _______ sketch(es).

• A
• B
• C
• A and B