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Master Plumbing > Ventilation System > Flashcards

Ventilation System Flashcards

1
Q

pipes installed to provide flow of air to or from a drainage system

A

VENT SYSTEM

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2
Q

a pipe or opening used for ensuring the circulation of air in a plumbing system

A

VENT PIPE

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3
Q

principal artery of the venting system

A

MAIN VENT

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4
Q

the horizontal wet venting of one or more sinks or floor drains by means of a common horizontal waste and vent pipe, adequately sized to provide free movement of air above the flow line of the drain.

A

COMBINATION WASTE AND VENT SYSTEM

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5
Q

that a portion of a vent pipe there wastewater also flows through

A

WET VENT

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6
Q

A pipe that does not carry liquids or water-borne wastes

A

DRY VENT

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7
Q

a horizontal vent connecting one or more individual vertical back vents with the vent stack or stack vent

A

BRANCH VENT

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8
Q

a branch vent for 2 or more traps

A

GROUP VENT

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9
Q

unit vent or dual vent

A

COMMON VENT

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10
Q

one vent pipe will serve 2 traps

A

UNIT VENT/DUAL VENT/COMMON VENT

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11
Q

a group vent pipe that connects to the vent stack

A

CIRCUIT VENT

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12
Q

vertical vent connection on a horizontal soil or waste pipe branch at a point downstream of the last fixture

A

LOOP OR CIRCUIT VENT

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13
Q

vertical vent connection on a horizontal soil or waste pipe branch at a point downstream of the last fixture that connects to stack vent

A

LOOP VENT

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14
Q

vertical vent connection on a horizontal soil or waste pipe branch at a point downstream of the last fixture that connects to vent stack

A

CIRCUIT VENT

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15
Q

a vertical vent that is a continuation of the drain to which the vent connects

A

CONTINUOUS VENT

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16
Q

Provides additional circulation of air between the drainage and vent systems

A

RELIEF VENT

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17
Q

a pipe connecting upward from a soil or waste stack below the floor and below horizontal connection to an adjacent vent stack

A

YOKE VENT

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18
Q

Backvent pipe

A

REVENT PIPE

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19
Q

the extension of a soil or waste stack above the highest horizontal drain

A

STACK VENT

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20
Q

the vertical vent pipe installed primarily for providing circulation of air

A

VENT STACK

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21
Q

vents a fixture trap and connects above the fixture served or terminates to open air

A

INDIVIDUAL VENT

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22
Q

connects directly with an individual trap underneath or behind the fixture

A

BACKVENT PIPE

23
Q

a pipe or shaft to convey foul air from a plumbing fixture or a room to the outer air

A

LOCAL VENT

24
Q

What is the minimum height of galvanized wrought iron or galvanized steel above ground?

A

15 cm

25
Q

What are the two of of determinants of vent pipe size?

A

length
total number of fixture units

26
Q

what is the minimum size of vent?

A

32 mm or 1/2 diameter of drain being served

27
Q

what is the allowable increase in the length of horizontal portion of vent as long as the pipe is increased one pipe size larger?

A

1/3

28
Q

What is the minimum rise of each vent above the highest flood level rim before offsetting horizontally to join the sent stack or stack vent

A

152 mm

29
Q

How many fixtures may be served by a common vertical vent pipe when they discharge into an approved double branch fitting with inlet openings at the same level?

A

2 fixtures

30
Q

How much is the extension of vent pipe above the roof?

A

0.15 m

31
Q

What is the clearance of vent pipe through roof away from any vertical surface nearby?

A

0.30m

32
Q

What is the horizontal distance of vent opening from any openable window, door opening, air intake or vent shaft?

A

3 m

33
Q

What is the vertical distance above vent opening from any openable window, door opening, air intake or vent shaft?

A

0.9 m

34
Q

What is the horizontal distance of vent opening away from lot line, alley, and street boundary lines?

A

0.9 m

35
Q

what is the height extension of vent pipe above roof or fire wall?

A

0.15 m

36
Q

what is the horizontal distance of vertical vent pipes for outdoor installations to any part of roof that is used for other purposes?

A

3 m

37
Q

what is the vertical distance of vertical vent pipes for outdoor installations to any part of roof that is used for other purposes?

A

2.1 m

38
Q

__________ is prohibited except where roof is used for purposes other than weather protection (for vents)

A

Flagpoling of vents

39
Q

How many stories above the bldg drain shall be served by a parallel vent stack?

A

10 or more

40
Q

Where should we provide yoke vents?

A

Every 5th flr levels

41
Q

What is the size of yoke vent?

A

equal to soil stack on vent stack (whichever is smaller

42
Q

What is the distance of yoke vent connection with the vent stack above floor level?

A

1 m

43
Q

What fitting/branch is used to connect a yoke went with drainage stack?

A

wye branch

44
Q

Wet venting is limited to vertical drainage piping receiving the discharge from tap arm of _____ fixture unit

A

1-2 FU

45
Q

What is the maximum number of fixture that a fixture serving as a vent can carry?

A

4 fixtures

46
Q

Wet-vented fixtures shall be located on ______

A

Same floor level

47
Q

The vertical piping between two consecutive inlet levels shall be considered a _____

A

Wet-vented section

48
Q

What is the minimum wet vent pipe size?

A

51 mm

49
Q

What type of fitting is used for venting system of island sinks?

A

Return bend

50
Q

The return bend for venting system of island sinks shall be a one piece fitting or an assembly of _____

A

45° elbows

51
Q

What is the minimum size for waste pipe and trap of CW&VS??

A

2 pipe sizes larger than fixture tailpiece

52
Q

No vertical waste pipe shall be used in any ______

A

CW & VS

53
Q

What are approved vent pipe materials?

A

Cast iron
Ductile cast iron
Galvanized wrought iron
Galvanized steel
Lead
Copper
Brass
Schedule 40 ABS DWV
Series 1000 PVC DWV

54
Q

What are approved vent fitting materials?

A

Cast iron
Galvanized malleable iron or steel
Lead
Copper
Brass
ABS
PVC

Master Plumbing (13 decks)

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