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2012 IPC > Chapter 9 Vents > Flashcards

Chapter 9 Vents Flashcards

1
Q

The main purpose of venting is for _____.

A

trap seal protection

901.2

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2
Q

The vent system is necessary to prevent pneumatic pressure differentials of more than _______ against the trap seal of any fixture.

A

1” of water column

901.2

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3
Q

The vent system of a chemical or acid waste system must be____________.

A

independent of the sanitary vent system

901.3

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4
Q

Field fabricated lead flashings shall weigh not less than _____ pounds per square foot.

A

3 Pounds per square foot

902.3

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5
Q

What is the minimum number of vent terminals that are required to extend to the atmosphere?

A

One

904.1

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6
Q

A vent stack connection to the base of a stack is required to connect________.

A

At or below the lowest horizontal branch

904.4

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7
Q

Where required to be protected against frost closure, the vent extension through the roof shall be not less than ___inches in diameter beginning not less than___ inches below the roof.

A

3 inches & 12 inches

903.2

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8
Q

What is the minimum required height of a vent terminal located on a roof that is used for purposes besides weather protection.

A

7 feet

903.1

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9
Q

A vent shall terminate a minimum of ___feet horizontally from or at least __feet above a window opening.

A

10 feet & 3 feet

903.5

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10
Q

What is the minimum required height above grade for a vent terminating through the side wall of a building.

A

10 feet

903.6

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11
Q

A dry vent is prohibited from offsetting horizontally until the vertical rise of the vent is _____.

A

6 inches above the flood level rim of the highest fixture being vented. 905.4

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12
Q

A kitchen sink with a 1 1/2-inch fixture drain must be vented within a developed length of __ feet from the trap weir to the vent fitting.

A

6 feet

Table 909.1

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13
Q

Which fixture is allowed to have a vent connection to the fixture drain below the trap weir?

A

water closet

909.2

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14
Q

In no case shall the diameter of a stack vent and vent stack be less than one-half the diameter of the drain served or less than ___ inches.

A

1 1/4 inch

906.1

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15
Q

Vents exceeding ___ feet in developed length shall be increased by one nominal size for the entire developed length of the vent pipe.

A

40 feet

906.2

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16
Q

Every building in which plumbing is installed shall have at least one dry vent that extends to the____.

A

Outdoors

904.01

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17
Q

The minimum height a sanitary sewer vent shall terminate above a roof is ____.

A

6 inches

903.1 GA Amendment

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18
Q

Vent stacks shall connected at or below the lowest horizontal branch and where the vent stack connects shall be located downstream of the drainage stack and _______________.

A

within a distance of ten times the diameter of the building drain.
904.4

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19
Q

The maximum distance a 3” trap shall be located from its vent is______.

A

12 feet

Table 909.1

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20
Q

When two fixtures are common vent and connected at different levels, the upper fixture cannot be a _____.

A

Water Closet

911.3

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21
Q

Sheet copper used for flashing material must be a minimum weight of______.

A

8 ounces per square feet

902.2

22
Q

All vent piping must be sloped such that all moisture will be drained to the drainage system by _________.

A

Gravity

905.2

23
Q

When a dry vent is connected to a drain line it shall be connected ________.

A

Above the center line of the horizontal drain pipe

905.3

24
Q

A connection between a vent and a vent stack or stack vent must be made a minimum of ___ inches above the flood level rim of the highest fixture served by the vent

A

6 inches

905.5

25
Q

A 4-inch trap can be located a maximum of ______ from a vent.

A 
16 feet (48 x 4" = 192")
Table 909.1
26
Q

The maximum distance a 3” trap shall be located from its vent is_____.

A 
12 feet( 48 x 3" = 144")
Table 909.1
27
Q

A vent installed within less than two pipe diameters of its trap would be a code violation and would be referred to as a___.

A

Crown vent

909.3

28
Q

A common vent can serve ___ fixture(s) located on the same floor level.

A

Two

911.1

29
Q

A wet vent may serve _________.

A

Any combination of fixture within two bathroom groups located on the same floor level
912.1

30
Q

The dry vent for a horizontal wet vent system cannot be connected to the _____.

A

Emergency floor drain

912.2.1

31
Q

Each wet-vented fixture drain shall connect _______ to the horizontal wet vent.

A

Independently

912.1

32
Q

A waste stack that is part of a waste stack vent system shall be installed vertically with every fixture drain connected _______.

A

Separately

913.2

33
Q

Which fixtures can connected to a waste stack vent system?

A

Floor drains , mop sinks , drinking fountains & lavatories
913.2

34
Q

The stack vent for a waste stack vent system shall not be less than_____.

A

The size of the stack it is connected to

913.3

35
Q

A circuit vent may protect a maximum of__ fixture traps with their fixture drains connected to a horizontal branch drain.

A

Eight

914.1

36
Q

Where is the circuit connected to the horizontal branch?

A

Between the two most upstream fixture drains connected to the horizontal drain
914.2

37
Q

A horizontal combination waste & vent is to be installed in the kitchen of a restaurant.The horizontal main waste pipe is 6”. The minimum size of the downstream vent must be no less than ____”.

A

3”

915.2.4

38
Q

What is the minimum size required for a stack vent serving a 2 1/2” waste stack?

A

2 1/2”

913.3

39
Q

A relief vent is required when a circuit vented branch receives the discharge of how many water closets & it connects to a stack receiving discharge from above?

A

4 or more

914.4

40
Q

A circuit vent is prohibited from receiving any discharge, but a relief vent is permitted to be a fixture drain when the discharge is not more than _________.

A

4 DFU’s

914.4.2

41
Q

The maximum slope of a horizontal combo waste & vent pipe ?

A

1/2” per foot

915.2.1

42
Q

Where does the vent of an individually vented fixture connect to ?

A

fixture drain of the trapped fixture

910.1

43
Q

Where two fixtures connect at different levels of a vertical drain pipe, the common vent is sized based on what?

A

max discharge of the upper fixture drain

911.3 & Table 911.3

44
Q

Where do you connect fixture not in a bathroom group to the horizontal wet vent that serves the bathroom group?

A

downstream of the horizontal wet vent

912.1

45
Q

In a horizontal wet vent system, how many wet vented fixture drains are allowed to discharge upstream of the dry vent connection?

A

1

912.2.1

46
Q

What is the maximum number of branch intervals that an air admittance may serve as the vent stack terminal?

A

6

918.3.2

47
Q

The minimum number of inch an air admittance valve most be above insulation materials?

A

6”

918.4

48
Q

If a waste stack has more than 10 branch intervals,the relief vent will be sized in accordance with what?

A

the vent stack serving the waste stack

908.2

49
Q

Which of these systems would you use on the bathrooms for a multistory hotel, single stack vent or a waste stack vent?

A

Single stack vent

913.2 & 917.2

50
Q

Which vent system allows the vent to be offset below the fixture drain served by the system.

A

Island fixture vent

916.2

2012 IPC (6 decks)

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