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Plumbing 4th Year > Plumbing Final > Flashcards

Plumbing Final Flashcards

1
Q

The waste for the most common tank type W.C. is roughed in at _______.

A

305 mm (12”) from finished wall

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2
Q

What is the minimum size building sewer clean out to an 8 inch building sewer?

A

Must be a manhole

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3
Q

The two main ways to identify a siphon jet wall hung bowl from a blow out wall hung bowl are?

A
  • Height of rough in
  • Number of supporting bolts
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4
Q

What is the size of the branch on the food display sink?

A

1 1/4”

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5
Q

When wet venting a bath tub through a lavatory with a 1 ¼“ trap, the diameter of the vertical wet vented portion according to the code book shall be _______.

A

1 1/2”

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6
Q

All 2 1/2” and smaller waste pipes should have cleanouts spaced not more than _______.

A

50 feet (15m)

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7
Q

A floor drain can be protected from back flow by _______.

A
  • a gate valve
  • a screw cap
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8
Q

The minimum distance between two shower heads is _______.

A

750 mm (30”)

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9
Q

To be wet vented, fixtures must be _______.

A

on the same floor or separate floors

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10
Q

A relief vent is most closely related to a _______.

A

vent stack

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11
Q

Relief vents are commonly used in connection with waste branches that are _______.

A

circuit vented

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12
Q

What are the heat sources for a Combi Oven?

A

Steam and electric

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13
Q

A maximum of how many F.U.’s may waste into a vent stack?

A

8

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14
Q

Not more than how many showers can be served by one drain?

A

6

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15
Q

Where a soil or waste stack receives the discharge from fixtures located on 11 stories or less, _______.

A

A yoke vent is not required, a vent stack is

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16
Q

A yoke vent is required when the soil or waste stack extends through a number of stories. An additional circuit vent is also required when _______.

A

more than 8 fixtures are installed in the circuit vented branch between the relief vent and circuit vent

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17
Q

One fixture that can be directly or indirectly connected is _______.

A

Drinking fountain

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18
Q

Minimum size of an air break for an indirect waste is _______.

A

1”

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19
Q

The washing machine standpipe is required to be installed to _______.

A

prevent the machine from Gravity draining

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20
Q

Which does not require a vent?
A) lavatory trap
B) trap forming part of an indirect drainage system
C) trap on a subsoil drainage system
D) either b or c

A

D) either b or c

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21
Q

On a flat roof, the vents should extend above the roof flashing ring by at least _______.

A

150 mm (6”)

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22
Q

A trap on a building sewer serving a mobile home would mean that this is _______.

A

or was an uncertified mobile home with few or no traps

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23
Q

The washdown ventilation hood is discharging warm grease into this grease trap at a rate of 0.36 L/S, what is that in fixture units?

A

11.4

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24
Q

The water supply used to flush holding tanks at a trailer dumping station would have a _______.
A) portable water sign
B) Non-Potable water sign
C) backflow preventer
D) both b and c

A

C) both b and c

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25
Q

A water jacketed grease trap is prohibited because of _______.

A

CCC possibility

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26
Q

A storm drain connected to a combined sewer requires a trap if _______.

A

The roof is used for a sun deck

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27
Q

Combined drains or sewers are always sized by _______.

A

converting f.u.’s to liters and using the proper table

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28
Q

A trap is required for a sub-soil drainage pipe if _______.

A

it drains into a sanitary sewer

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29
Q

The waste extension on a chair carrier is adjustable by _______.

A

Adjust for different wall thickness measurements

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30
Q

A drum trap may be permitted to be installed in a drainage system if the trap is used as _______.

A

an interceptor

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31
Q

The minimum developed length of a trap arm, not including an unvented floor drain is _______.

A

2 pipe diameters

32
Q

The minimum size wet vent serving only a water closet and a basin is _______.

A

2”

33
Q

What is the minimum size building sewer (in inches) that connects to a public sewer?

A

4

34
Q

The flow from a pump or semi-continuous appliance into a storm drainage system is taken as _______.

A

1 L/S - 900 L

35
Q

On a combined sewer, the fixture unit rating is expressed in equivalent (liters) on roof area, therefore a total hydraulic load of 239 F.U. equals _______.

A

2360 L

36
Q

If a flat roof was 11m in length and 20m wide, with an adjacent wall of 14m in length and 9m high what size R.W.L. (in inches) is required? (20mm in 15minutes)

A

4

37
Q

On a wall hung water closet, the distance from the face of the wall to the bowl is set by _______.

A

Back up nuts and washers

38
Q

A roof drain that is connected to a vertical leader must be provided with what type of fitting a max of 5 foot between the hopper and leader?

A

An expansion joint

39
Q

The food prep sink used to have a bi-transit waste, now they are illegal, what is its replacement name?

A

non concealed standing waste

40
Q

Every grease interceptor that serves as a trap must have a water seal of at least _______.

A

1 1/2” (40mm)

41
Q

The vent on a sun deck must terminate how high above the sun deck?

A

2.0 m

42
Q

Nominal pipe sizes refer to pipe sizes _______.

A

⅛” to 12”

43
Q

What is the rough-in height of this handicapped lavatory drain?

A

521 mm

44
Q

The minimum allowable pressure test on a water distribution system is _______.

A

700 kPa (100 psi)

45
Q

What is the minimum dimensions of a current universal room?

A

2700 mm x 1700 mm

46
Q

Wall hung W.C. used with carriers are normally _______.

A

syphon jet and blowout

47
Q

A maximum of 8 F.U. may waste into which of the following vents?

A

lowest portion of the vent stack

48
Q

The minimum CCC protection used with a combi oven would be _______.

A

DCVA

49
Q

Every support for piping that’s installed should be capable of _______.
A) supporting the pipe
B) supporting the contents
C) keeping the pipe in proper alignment
D) all of the above

A

all of the above

50
Q

The minimum size standpipe and trap for a domestic clothes washer in Canada is not less than _______.

A

50 mm

51
Q

Every oil interceptor shall be provided with vents that _______.
A) extended independently to open air
B) connected to the interceptor at opposite ends
C) terminate at elevations differing by not less than 300mm (12”)
D) all of the above

A

D) all of the above

52
Q

Where is the Island vent located in the code book?

A

appendix 2.4

53
Q

When a pump installed in a sewage sump does not operate automatically, what is the required size to hold?

A

24 hours accumulation of sewage

54
Q

What is the maximum distance between supports for 25 mm (1”) copper pipe?

A

2.5 m

55
Q

What is the minimum allowable size of branch when the hydraulic load is 28 F.U.?

A

4”

56
Q

What is the minimum size of metal rods used on pipe sizes over 4” in diameter?

A

1/2”

57
Q

What is the cause of most kitchen fires?

A

Washdown ventilation Hood

58
Q

To determine the height of a fixture and the rough measurement for water and waste, what must be consulted?

A

Rough-In book or Google

59
Q

Where is a cleanout for a trap, which serves a leader or a sub soil drain, installed?

A

Over the trap upstream of trap

60
Q

A continuous vent is?

A

A vent pipe that is an extension of a vertical fixture drain or branch

61
Q

How often is it required to change your hard hat harness?

A

Annually

62
Q

One trap may serve a group of floor drains, showers, or laboratory sinks provided:

A

All fixtures are in the same room

63
Q

True or False: One water closet connected to a horizontal branch, is wet vented through a basin, and 15 fixture units discharge past the horizontal branch from above, a relief is required?

A

False

64
Q

The developed length of a trap arm from the vent to the crown weir is:

A
  • not less than twice the size of the trap arm
  • The total fall is not greater than the size of the trap arm
65
Q

An indirectly connected drain must have:

A

An air break

66
Q

A sanitary tee fitting, when installed on the horizontal plane may be used to connect:

A

A dry vent

67
Q

The maximum number of flushometer water closets that can discharge into an 80mm (3”) stack is:

A

6

68
Q

Which of the following fixtures may discharge into the storm drainage system (RWL) according to the Canadian Plumbing Code?

A

A bubbler with check valve

69
Q

What are the minimum size trap arms that can be in the CVB?

A

2” and 3”

70
Q

Trap arms connected to a multi-storey wet vent shall be no larger than:

A

2”

71
Q

What is the minimum size pipe wrench recommended for a 1 1/2’ pipe?

A

14” pipe wrench

72
Q

Water hammer is recommended to be decreased with:

A

Water hammer arrestors

73
Q

Water closet seats in public washrooms must be of the:

A

Open front elongated

74
Q

What is the fixture unit load of a 3 compartment sink?

A

2

75
Q

What size is the wet vent portion of the acting relief vent (2 lavs tied in symmetrically) for a circuit vented branch?
The CVB has 3 (2” trapped showers), an emergency floor drain, two water closet symmetrically tied in

A

2”

76
Q

Where is an elevator sump located?

A

Outside the elevator pit

77
Q

When sizing a stack vent or vent stack on the same soil stack, which is likely to be bigger?

A

The vent stack

Plumbing 4th Year (4 decks)

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