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Flashcards in Plumbing Theory Period 1 (CND) Deck (127)
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1

If you can't vent, conduct a air quality test & wear a SCBA?

Do not entre!

2

The ration of apprentices to journeymen?

2 apprentices for the 1st journeymen & then a 1:1 ratio after

3

L.A.C?

local apprenticeship committee

4

P.A.C?

Provincial apprenticeship committee

5

A vertical piping arrangement for drainage & venting in which small diameter trap arms are placed above larger diameter trap arms?

A Stack vented group

6

Any liquid waste other than clear-water or storm water?

Sewage

7

A vent pipe that connects the top of a soil or waste stack to a vent header or open air?

Stack vent

8

Minimum size of a main stack for a single family dwelling?

3" Stack

9

Maximum size of a trap arm that may drain into a wet vent?

2" (50mm) with the exception of a emergency floor drain

10

maximum size of a wet vent that serves a water closet?

2" (50mm)

11

Minimum size of a building cleanout fitting that maybe installed is?

4"

12

Minimum pipe size for a building sewer that is to be connected to a public sewer?

4"

13

piping places underground must be covered with a minimum of?

300mm of granular material, carefully placed & tamped over the pipe

14

Minimum slope to which a trap arm must be installed?

2% grade

15

A properly piped wet vented group of fixtures that includes a water closet. Where is the water closet placed?

the water closet must be piped as the lowest vented fixture.

16

Trap arm size is based on?

Fixture outlet pipe size

17

Excavation for building sewers must be?

Preceded by utility locator services

18

No water closet maybe installed in a room that is not?

Properly lighted or vented

19

maximum direction of change a trap arm have before a vent fitting must be place is?

Dependant on the type of discharge the fixture will have

20

Gravity drainage in a horizontal piping should move at a speed of?

Approx. 2ft per second or 600mm per second

21

ideally flow rates should keep a drainage pipe at least?

1/3 to 1/2 full

22

The term for any vertical soil & waste piping that passes through a minimum of one story of a building is ?

is called a Stack

23

Trap arms of fixtures that do not use siphonic action may change direction in the horizontal plane a max of?

135 degrees

24

the max allowable vertical distance between the fixture & the trap must not exceed ______ inches or _____mm.

36" or 900mm

25

The min. distance between the vent & the trap must not be?

less than twice the size of the fixture drain.

26

The min. for the trap seal is?

38mm or 1-1/2" with exception to acid waste trap seals being 2" or 50mm

27

Flat vent is a trade name for a vent that needs a ?

Cleanout

28

2 or more dry vents connecting together?

A branch vent

29

An individual vent becomes a stack vent when?

a fixture drain extends through at least one complete story.

30

The min drainage pipe size required for a lavatory is?

1-1/4"

31

What is the primary function of a trap?

to keep sewer gas from entering into a building.

32

Which trap is prohibited from use in the plumbing system?

Bell trap

33

The size of a trap that serves 2 lavatories?

1-1/2"

34

What would happen if the fall on a trap arm was more than one pipe diameter?

the trap ma self-syphon

35

A trap too far below a fixture will?

Self- Syphon

36

what kind of syphonage occurs when a fixture outlet pipe is too long?

momentum syphonage

37

The developed length of the fixture outlet pipe from the farthest fixture shall not exceed?

900mm (3ft)

38

Clean out size and spacing must follow which table?

Table 2.4.7.2 in the code book

39

Min size of a building sewer cleanout fitting maybe installed?

3"

40

Kitchen sink fixture drain requires a cleanout for all change of directions that total?

90 degrees of change between cleanouts

41

A 4" building sewer requires a?

4" building cleanout

42

A building sewer 8" or over in size requires ?

a manhole as the cleanout

43

3" floor drain is considered as being vented through the building drain when the?

Fixture drain is no longer than 12ft

44

Line cleanouts on a stack or straight run of piping & fitting cleanouts placed in the branch of a Y fitting count as a?

45 degree change of direction for the cleaning tool.

45

A cleaning tool should pass through changes of direction in a drain adding up to no more than?

135 degrees

46

A manhole located inside a building must have an?

Air tight seal & be vented

47

A trap cleanout maybe used for?

Cleaning the trap

48

Tests allowed to be conducted for DWV rough-in piping are?

water test, air test, & ball test

49

Where does the building sewer begin?

1m outside the foundation wall

50

Plunger works best when the blockage is?

Upstream of the fixture vent fitting.

51

A top snake is ?

A hand operated drain cleaner

52

Is only useful to clear a blockage located in a water closest trap way?

Water closet auger

53

Drainage tapes maybe?

hand operated only

54

If a drain cleaning cable breaks in the drain it maybe caught & removed with a?

retrieval head

55

Sewer rodding machines are used to ?

Large straight runs of pipe

56

Chemical drain cleaners are capable of aggressive reactions resulting in ?

Harmful or offensive gases

57

Acid drain cleaners react with H2O in the drain to produce?

Hydrochloric Acid

58

the electrically operated drain gun is an adaption of the?

Top snake

59

The drain gun should only be used on?

Small drains

60

All running traps must have a ?

Cleanout over top of them

61

what is the min. length for a 3" non-vented floor drain trap arm?

18"

62

max distance between the vent & the trap is measured from?

the trap weir to the vent pipe fitting

63

what is the max distance between the vent pipe & a 4" trap?

32ft (9.8m)

64

A properly installed pedestal basin should be mainly supported by only?

Brackets places on the wall where the fixture is to sit.

65

The PH level of natural precipitation is commonly closed to?

5.6

66

Vent pipe roof terminal assemblies need to be?

Carefully located & appropriately constructed

67

a sewer that is installed to convey storm water is a?

Storm Sewer

68

Measure a long centre line of the pipe?

Developed length

69

Min diameter of a fixture outlet pipe?

1-1/2" 38mm

70

An important difference between manholes & catch basins are?

Applications

71

Min distance for a trap arm on a lav.?

3" or 2x the pipe diameter

72

max distance for a trap arm on a lav.?

1.8m or 6ft

73

max. distance between the vent pipe & a 1-1/4" trap?

1.5m or 5ft

74

Max distance between the vent pipe & 1-1/2" trap?

1.8m or 6ft

75

max distance between the vent pipe & a 2" trap?

2.4m or 8ft

76

max distance between the vent pipe & a 3" trap?

3.6m or 12ft

77

max distance between the vent pipe & a 4" trap?

9.8m or 32ft

78

The max distance between the vent & the trap is measured from & to?

Centre line of the vent to the weir of the trap

79

The max drop on a horizontal drain & the vent pipe connection must not exceed?

The diameter of the pipe

80

Min. distance between the vent & the trap must not be less than?

twice the size of the fixture drain

81

The best arrangement for venting because waste water does not entre the vent pipe?

the continuous waste & vent principle connection

82

May allow fixture to self syphon?

trap to low below the fixture

83

Vent pipe roof flashing must be compatible with the vent pipe material to avoid ?

Electro-chemical corrosion

84

A vent connection fitting paced on a trap arm must have the?

The vent opening arranged above the horizontal centre line of the trap arm

85

True or False: All ball cocks will be of the anti-siphon type?

True

86

Is operated by the tank flush lever flush lever and holds water in the tank until the toilet is flushed?

A flapper or flush actuator

87

Fixtures considered as a bathroom group in a residence are?

The tub or shower, the toilet and the basin

88

A close coupled water closet differs from a low or high tank closet by?

The way the tank is mounted.

89

A properly installed pedestal basin should be mainly supported by only?

Brackets placed on the wall where the fixture is to sit

90

True or False: All ball cocks will be of the anti-siphon type?

True

91

Is operated by the tank flush lever & holds water in the tank until the toilet is flushed?

A flapper or flush actuator

92

Fixtures considered as a bathroom room?

The tub and/or shower, toilet & basin

93

A close-couple water closet differs from a low or high tank water closet by?

The way the tank is mounted

94

Is installed before drywall or plaster is placed on the wall?

A recessed tub

95

A properly installed pedestal basin should be mainly supported by only?

Brackets placed on the wall where the fixture is to sit.

96

What shows rough dimensions of fixtures & supplies piping locations?

Fixture rough in manuals

97

The residential fixture that requires a shut off valve on its water supply piping?

The water closet

98

Kitchen sinks do not have concealed over flow arrangements because?

Food & grease can collect in the overflow creating an unsanitary condition.

99

The plumbing fixture that requires the most maintenance is?

The water closet

100

When cutting a hole for a fixture in a counter top you should?

Use a reciprocating saw with a sharp fine toothed blade

101

Where would you find the space required for a water closet?

Manufactures rough in books

102

The quantity of drinking water per day required by humans ?

2 liters

103

Cloud formation is the atmosphere is caused by?

Cool air condensation of water vapor

104

Ground water that naturally re appears on the earth surface may show up as?

Swamps, sloughs or springs

105

PH level of natural precipitation is commonly close to?

5.6 PH

106

PH level of 4 indicates that a substance is?

Acidic

107

Water is considered to be a universal solvent because?

More things dissolve in water that in any other solvent.

108

A gooseneck on a water service is installed to provide for?

Flexibility of the pipe as ground settling after backfill or moves from frost.

109

The corporation curb cock is placed on or near the property line for?

The utility employee does not have to trespass

110

What is the minimum size of water distribution piping to a service water heater serving more than two fixtures?

3/4"

111

What is the maximum length of connector used with a 3/8" supply pipe?

750mm

112

A water test for water distribution system may be done with?

Potable water only

113

The shut off valve placed at the entry point of a 3/4" or 1" water service is allowed to be ?

A stop & drain valve

114

Minimum pay rates for apprentices are laid out by law in?

Plumber trade regulations

115

A pipe that collects both human waste and other types of waste is known as a?

Soil pipe

116

True or False: A stack-vented group is also known as a single story wet vent?

False

117

The discharge from an air conditioner would be known as?

Clear water waste

118

The pipe that connects a fixture trap to another part of the drainage system is known as?

Fixture Drain

119

True or False:A device used for the storage of food must have its drain directly connected to the drainage system?

False

120

True or False: A vent pipe that is an extension of a soil stack is known as an individual vent?

False

121

True or False: Nominally vertical means an angle of not more than 45 degrees with the vertical?

True

122

Minimum standards for plumbing systems installed in the province of Alberta are found in the?

National plumbing code of Canada

123

A water closet trap will be tied into the stack by the use of a?

Sanitary tee

124

The unobstructed vertical distance thru air between a soil or waste pipe and the flood level rim of the fixture into which it discharges?

Air break

125

The minimum size of a Laundry Tub Trap arm?

1-1/2"

126

Minimum size of a water closed trap arm?

3"

127

Changes of direction or elevation in water distribution networks are protected fro disconnection of fittings by?

Thrust blocks & anchors