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Plumbing Level 1 > Foundations Study Package Two > Flashcards

Foundations Study Package Two Flashcards

1
Q

What does ULF stand for?

A

Ultra Low Flush

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2
Q

What does the schedule number on a pipe indicate?

A

The wall thickness

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3
Q

What abbreviation indicates the thinnest wall section for black iron pipe?

A

Std.

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4
Q

Which of the following is a non-ferrous metal?

stainless steel, duriron, wrought iron or tin

A

tin

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5
Q

If a sewer is installed at a 1% grade, the grade would be approx. ___ if expressed as a fraction of an inch /foot.

A

1/8”

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6
Q

The radius of a circular tank is 21 inches. What would its circumference be?

P=2(pie)r

A

11’-0”

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7
Q

What is the effect when a water line is reduced in size while the rate of flow is maintained?

A

There will be an increase in velocity and a reduction in pressure

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8
Q

A hot water tank, under pressure of 75 psig has a faulty thermostat and continues to heat. If the T & P relief valve was also stuck in the closed position, what would the result?

A

The pressure would increase while the temp. rises to more than 212F

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9
Q

What is the class designation of a fire in a combustible material such as paper or wood?

A

Class A

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10
Q

What is considered a Class B fire?

A

flammable liquid

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11
Q

When opening a faucet, a chattering noise is heard. What is the most likely problem?

A

The washer is loose

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12
Q

The operation of diaphragm and piston type flush valves is governed by what?

A

Total force

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13
Q

question 13 math problem

A
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14
Q

How many BTU’s are required to raise 6 pounds of ice from 14F to water at 70F?

(latent heat and specific heat calculations)

A

1146 BTU’s

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15
Q

When 1 cubic foot of water turns into steam, what would be the new volume steam would occupy?

A

1728 cubic feet

12x12x12

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16
Q

question 16 math problem

A
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17
Q

If a reservoir is located 240 feet above the mains in a town, how much pressure would exist in the mains?

A

104 psi

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18
Q

A plumber requires (24) - 6” diameter sheet metal sleeves for running pipes through masonry walls. If each sleeve is 18” long and 1” is required for joint overlap, how many square feet of sheet metal are needed?

A

60 ft2

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19
Q

A nominally horizontal pipe is any pipe graded to what?

A

less than 45 degrees with the horizontal

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20
Q

What is the pressure in a gravity domestic water system provided by?

A

The height of the water storage tank

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21
Q

If granite has a specific gravity of 2.7, what is its density?

A

168 lbs/ft3

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22
Q

What is the weight of a steel bar 6’ - 6” long and 1” square if steel weight 449.28 lbs/ft3?

A

20 lbs 4 ½ oz

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23
Q

Complete the following statement: “The fire department connection for a sprinkler system…”

A

Is used to supply water to the sprinkler system inside a building

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24
Q

What would be done in order to increase the pressure downstream of a PRV?

A

Turn the adjusting screw clockwise

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25
Q

Question 25: math

A
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26
Q

Question 26: math

A
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27
Q

What is the purpose of the hole in the reamer blade of a No. 10 Ridgid pipe cutter?

A

To open or close a “B” tank

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28
Q

Complete the following sentence, “ A body or object immersed in a fluid is buoyed up by a force equal to the… ”

A

Weight of the liquid displaced

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29
Q

What is 10 ft head of water equal to?

A

4.33 psi

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30
Q

What would be the pressure in kilopascals at the bottom of a storage tank 4 meters high?

A

39 kPa

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31
Q

At what temp. is water at its max density?

A

39 F

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32
Q

What does a cubic foot of water weigh?

A

62.4 pounds

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33
Q

A pipe is 84 feet long / graded at 1” in 20 feet. What is the total fall?

A

4.2 “

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34
Q

A pipe drops 16 inches over its length of 225 ft. What is its grade as a percent

A

.59%

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35
Q

What is the total fall of a sewer installed at 1% grade?

A

12 inches / 100 feet

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36
Q

A pipe is 145 ft long and is graded at rate of 2 ½ %. What is the total fall?

A

3.625 ft

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37
Q

What is the standard measurement from the finished floor to the centreline of the waste outlet for a lavatory?

A

18”

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38
Q

What is the standard measurement from the centreline of a tank type toilet to the centre of the water supply?

A

6”

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39
Q

2 sleeves must be set in concrete slab for 2 - 12” rough in toilet bowls installed back-to-back. If the partition wall is 5” hollow tile and the wall finished is ¾” plaster, what is the C-C distance between the sleeves?

A

30 ½”

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40
Q

How many BTU’s are required to raise the temp of 40 Imperial gallons of water from 60F -→ 160F?

A

40,000

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41
Q

What is a pipe that is installed at an angle of 45 degrees with the horizontal?

A

nominally vertical

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42
Q

Compared with a grade of 1/8 “/ft, what is a grade of 1%?

(is it more or less)

A

Slightly less

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43
Q

What is the effect of high temp (165F and over), soft water on copper water lines?

A

The rate of corrosion is increased

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44
Q

What does a pH test of water determine?

A

the acidity

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45
Q

What is the max length of a water closet arm?

A

4m

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46
Q

How much expansion would occur on a 450 ft steel pipe installed at 45F and operating at 200F (C.O.E = 0.0000067)

A

.4673ft

5.6076”

5 5/8”

All of the above is right

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47
Q

What would be the weight of liquid in a tank 1741 mm long by 1432 mm wide by 211 mm deep, if the liquids specific weight is 0.94?

A

494 kg

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48
Q

Calculate the number of litres in a water storage heater that is ¾ full of water. The tank is 1.32m high and has a circumference of 1.24m.

A

121 litres

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49
Q

What is the metric unit that is used to represent mass?

A

gram

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50
Q

The area of one side of a square tank is 20 ¼ sq. ft. What are the lineal dimensions of one of the sides?

A

4’6” x 4’6”

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51
Q

Which wrench should be used if you are working with finished stainless of chromed pipe?

A

Strap wrench

52
Q

Complete the following statement: “A straight tee shall only be used in a drainage system to …”

A

Connect a vent

53
Q

Complete the following statement: “ A single sanitary tee may be used to …”

A

Individually vent a fixture above the centreline of the fixture drain

Continuously vent a fixture

Connect a branch vent to a stack vent

All of the above are correct

54
Q

Complete the following statement: “ A single sanitary tee cannot be used to…”

A

Change the direction of flow in a horizontal waste

55
Q

What is the common centreline rough - in dimension for the water supply to a standard floor-outlet residential water closet?

A

6”

56
Q

What type of tubing should not be used to supply water to a carbonated drink dispenser?

A

Copper

57
Q

What is a standard height A.F.F to the drain for a pedestal basin?

A

18 ½”

58
Q

What does “barrier free” mean?

A

accessible to the physically challenged

59
Q

Which gas listed below is heaviest?

A

Butane

60
Q

What would a fire in a combustible material such as paper or wood be identified as?

A

Class A fire

61
Q

What is the correct name given to the plumbing drain installed in conjunction with an enameled steel tub?

A

waste and overflow

62
Q

The crimp ring used to complete a joint in PeX pipe should be crimped at what length?

A

1/8” - ¼” from the end of the tube

63
Q

What type of valve is most likely to be found directly inside a residential building at the end of a water service?

A

Compression stop and waste

64
Q

What type of valve is most commonly used directly inside a commercial building?

A

gate valve

65
Q

1 ¼” copper pipe shall be supported horizontally by hangers spaced no further apart than what?

A

10 ft

66
Q

At what angle is the shield on a drinking fountain?

A

45 degrees

67
Q

What is the name given to a pipe drawing submitted after the job is completed, that shows locations of piping on the job?

A

As-built drawings

68
Q

Water or industrial waste may not enter the drainage system if the discharge temp. is higher than what temp?

A

75C

69
Q

Question 69 (hehe) is a math question

A
70
Q

If hangers are required every 10 ft on a horizontal pipe that is 90 ft long, how many hangers are required (excluding those at each end of the pipe)

A

8

71
Q

How can the effects of water hammer be lessened?

A

By the use of shock stops

72
Q

How is vertical pipe normally supported?

A

by riser clamps

73
Q

What is the purpose of the hex nut on a check valve?

A

Allow access to the pin and disc

74
Q

What is the type of hanger best suited for supporting a run of 6” soil pipe?

A

adjustable clevis hanger

75
Q

Determine the total length of pipe necessary in order to cut the following pieces:

2 x 3’ - 4½” e-e

1 x 63 ½” e-e

3 x 27 ¼” e-e

2 x 2’ 4 3/8” e-e

A

23’ 7”

76
Q

question 76 is a picture question

A
77
Q

Which of the following hangers would be suitable for use on a 6” galvanized cold water line?

A

6” clevis hanger

78
Q

Question 78 = picture question

A
79
Q

A crimp ring is used to join which pipes?

A

PeX

80
Q

How do the wheels on a snap cutter cut the pipe?

A

They apply pressure to break the pipe

81
Q

Question 81: picture question

A
82
Q

Complete the following statement: “ The clamp on an MJ cast iron drainage pipe is …”

A

Stainless steel

83
Q

Complete the following statement: “ A pipe saddle is …”

A

Used to prevent pipe insulation from crushing

84
Q

What would the water supply to a domestic dishwasher be?

A

hot only

85
Q

Complete the following statement: “ According to manufactures’ installation instructions, the WC bolts …”

A

Are cut to length after the bowl is installed

86
Q

A horizontal pipe is 50 ft long with a hanger at each end. How many additional hangers will be required if the spacing between hangers is to be 3 ft?

A

16

87
Q

Which type of valve can be described as a compression type valve?

A

A globe valve

88
Q

What can be classified as clear - water waste?

A

Drinking fountain

relief valve outlet

air conditioner drainage

all of the above

89
Q

Question 89 is a knotty question

A
90
Q

question 90: also knotty

A
91
Q

question 91: still knotty

A
92
Q

Question 92: the knottiest

A
93
Q

The relief valve piping from a hot water tank shouldn’t be pipe directly into a floor drain because?

A

contamination of the potable water system may occur

94
Q

Fluxes used for brazing have a temp range of:

A

1100 - 1500F

95
Q

When required, guardrails shall be placed at:

A

42” above the platform

96
Q

An extension ladder is placed against a roof overhang which is 20 ft above the ground and projects 2 ft out from the building wall. The proper distance from the wall to the base of the ladder is:

A

7 feet

97
Q

The purpose of a septic tank is to:

A

break down solids

98
Q

A roll groover for pipe:

A

Will not remove the burr

99
Q

Galvanized pipe is steel pipe with a coating of:

A

zinc

100
Q

Why is it necessary to ream a pipe before cutting the thread?

A

If reaming follows threading, the pipe end may split or flare

101
Q

When required, guardrails shall be placed at:

A

42” above the plateform

102
Q

Indirect (momentum) siphonage of a trap:

A

Is due to the operation of other fixtures in the system

103
Q

The upper portion of a ladder should extend past the point of contact with the roof by:

A

36”

104
Q

What is the function of a “ball drip” used on a fire department connection?

A

to drain the siamese connection

105
Q

The pressure at the base of a column of water 45ft high would be:

A

19.49 psi

106
Q

The dip tube in a HWT is located:

A

on the cold inlet

107
Q

Low Temp. Boilers operate at a temp below:

A

250F

108
Q

What type of knot is used to tie together 2 rope of unequal diameter?

A

sheet bend

109
Q

Question 109: math

A
110
Q

A ditch that is 5’ - 6” deep requires:

A

Either: shoring or sloping of the sides

111
Q

After tightening a malleable iron fitting by hand, it is turned by a wrench:

A

approx. 2 ½ - 3 ½ turns

112
Q

A water closer auger:

A

is only useful for clearing a blockage inside the toiler bowl’s trapway

113
Q

Heat transfer from molecule to molecule is known as:

A

conduction

114
Q

Question 114: math

A
115
Q

What type of valve is considered as a quarter turn?

A

plug

116
Q

Question 116: picture

A
117
Q

A plug valve would be very similar in its design to a:

A

ball valve

118
Q

An 8” x 6” x 4” standard butt weld tee would have a branch outlet size of:

A

4”

119
Q

The valve recommended for service conditions that are fully open or fully closed:

A

gate

120
Q

Check valves are acceptable for:

A

use in vertical piping systems

121
Q

The spacing of hangers / supports are specified in the:

A

NPC 2015

122
Q

ACR and GP Soft Copper tubing is measured by it’s:

A

OD and wall thickness

123
Q

Copper tubing suitable for water service lines:

A

K & L soft temper

124
Q

Gaskets stored for long periods shall be kept:

A

flat

125
Q

The material that is used commonly today to repair lead and oakum joints is:

A

Oakum and PC - 4

Plumbing Level 1 (14 decks)

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