Vents Flashcards
Review venting systems and configurations in plumbing installations. (30 cards)
True or False:
Traps serving sinks for bars and soda fountains are not required to be vented where it is impossible to do so.
True
True or False:
Copper or copper alloy tubing for drainage vent systems shall not be permitted for use below ground level.
False
What color is assigned to mark Type M copper tubing?
Red
What color is assigned to mark Type DWV copper tubing?
Yellow
True or False:
Changes in direction for a drainage vent pipe shall be made by bending the pipe to the appropriate angle.
False
Which information is not used to determine the size of a drainage vent pipe?
a. length of the pipe
b. the type of material used
c. fixture units connected to the pipe
d. none of these
b. the type of material used
Fill in the blank:
The diameter of an individual vent shall be not less than ______ the diameter of the drain to which it is connected.
one-half
Which of the following is not an acceptable condition for a drainage vent pipe?
a. sloped back to a drain
b. horizontally level
c. having drops or sags
d. none of these
c. having drops or sag
Fill in the blank:
Each drainage vent shall rise vertically to a point not less than ______ inches above the flood level rim of the fixture served before connecting to any other vent piping.
6
True or False:
A drainage vent shall be permitted to reduce in size above the roof termination.
False
Which of the following is not one of the required conditions for a common vertical vent pipe?
a. fixtures connect to an approved double fitting
b. inlet openings must be at the same level
c. each fixture wastes separately into the vertical drain
d. three fixtures may connect to the common vent
d. three fixtures may connect to the common vent
True or False:
ABS or PVC drainage vent piping exposed to sunlight is required to be protected by being painted.
True
Fill in the blank:
A drainage vent shall terminate not less than ______ feet from an openable window.
10
Fill in the blank:
Drainage vents for outdoor installation shall extend not less than ______ feet above the surrounding ground.
10
Fill in the blank:
An increase in diameter to avoid frost or snow closure for a vent pipe shall be made inside the building not less than ______ foot below the roof in insulated space.
1
Fill in the blank:
Each vent stack shall be connected to the drainage stack at each ______ floor, counting down from the uppermost fixture drain.
5th
Which of the following statements is not true for vertical wet venting?
a. Shall not serve more than 4 fixtures
b. No wet vent shall exceed 4 feet in developed length.
c. Wet-vented fixtures shall be within the same story.
d. Fixtures connected shall have a fixture unit value of
one or two.
b. No wet vent shall exceed 4 feet in developed length.
Fill in the blank:
If a horizontal wet vent is serving 5 DFU or more, the diameter of the pipe shall not be less than ______ inches.
3
Fill in the blank:
The water closet fixture drain shall be connected to a horizontal wet vent ______ the fixture drain serving as a vent.
downstream from
Fill in the blank:
A combination drain and vent system with a branch exceeding ______ feet in length shall be separately vented in an approved manner.
15
Fill in the blank:
When installing a combination drain and vent system, the vent pipe shall be not less than ______ times the pipe size of the fixture tailpiece or connection.
2
What is the maximum length of a vertical fixture tailpiece that is connected to a combination waste and vent system?
2
What is the maximum number of fixtures on a circuit vent?
8
True or False:
The vertical circuit vent pipe shall receive the discharge of soil or waste.
False
