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Test 1979. Flashcards

0
Q
  1. The term “indirect waste” is most closely associated with the
  2. prevention of food contamination.
  3. installation of ejectors.
  4. discharge of a sink into a dry well.
  5. integral trap.
A
  1. prevention of food contamination.
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1
Q
  1. Traps may lose their seal in several ways. One term that has no effect on the loss of the seal is:
  2. Siphonage.
  3. Capillary action.
  4. Condensation.
  5. Momentum.
A
  1. Condensation.
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2
Q
  1. A type of vent pipe that is used to vent back to back fixtures is known as a
  2. relief vent.
  3. unit vent.
  4. branch vent.
  5. reverse vent.
A
  1. unit vent.
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3
Q
  1. The fixture unit value given to a water closet with a flush tank is
  2. 2
  3. 3
  4. 4
  5. 6.
A
  1. 4.
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4
Q
  1. The term “battery of fixtures” is most closely associated with
  2. two water closets and a urinal on one wall
  3. one water closet and one urinal on opposite walls
  4. four water closets installed back to back
  5. six adjacent water closets on a common wall.
A
  1. six adjacent water closets on a common wall.
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5
Q
  1. The term “ fixture unit” is most closely associated with the
  2. bath tub
  3. kitchen sink
  4. lavatory basin
  5. water closet.
A
  1. lavatory basin
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6
Q
  1. The type of trap prohibited under the NYC plumbing code is a
  2. stack vented trap
  3. running trap
  4. crown vented trap
  5. back vented trap.
A
  1. crown vented trap.
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7
Q
  1. The seal of a trap is identified as the vertical distance between the
  2. inlet and the cleanout
  3. dip and cleanout
  4. dip and the weir
  5. crown and the invert.
A
  1. dip and the weir
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8
Q
  1. The smallest size soil branch is
  2. 1-1/2 inch
  3. 2 inch
  4. 3 inch
  5. 4 inch.
A
  1. 3 inch
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9
Q
  1. The plumbing code permits slip joints
  2. on the outlet side of the fixture trap
  3. on the inlet side of the fixture trap
  4. only with expansion joints
  5. only on roof terminals over 5’.
A
  1. on the outlet side of the fixture trap

2. on the inlet side of the fixture trap.

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10
Q
  1. Of the following traps. the type that is not permitted to be installed is
  2. 1/2-S
  3. P
  4. 3/4-S
  5. running.
A
  1. 3/4-S.
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11
Q
  1. The maximum distance between cleanouts in horizontal drainage lines shall be
  2. 25 feet
  3. 35 feet.
  4. 100 feet.
  5. 75 feet.
A
  1. 100 feet.
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12
Q
  1. When referring to a building drainage system, the term “waste pipe” should normally be applied to
  2. piping which drains water closets
  3. piping which does not receive human waste
  4. any pipe which carries water-borne wastes
  5. any pi[e which connects to the building drain.
A
  1. piping which does not receive human waste.
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13
Q
  1. A trap should be vented so that the seal at no time is subjected to a pressure differential of more than
  2. 1 inch of water
  3. 2 inches of water.
  4. .1 pounds per square inch
  5. .2 pounds per square inch.
A
  1. 1 inch of water
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14
Q
  1. The minimum required diameter of any soil stack extension which passes through the roof is
  2. 3 inches
  3. 4 inches
  4. 5 inches
  5. 6 inches.
A
  1. 4 inches
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15
Q
  1. A device used to prevent back flow by siphonic action is called a
  2. relief valve
  3. sewage ejector
  4. foot valve
  5. vacuum breaker.
A
  1. vacuum breaker.
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16
Q
  1. The minimum pressure available at the faucet or water outlet with the water outlet wide open shall be
  2. 2 psi
  3. 4 psi
  4. 6 psi
  5. 8 psi.
A
  1. 8 psi.
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17
Q
  1. Air chambers installed at individual fixtures
  2. need not be accessible
  3. shall be accessible
  4. are required for loads of less than 5 fixture units
  5. are required for loads of more than5 fixture units.
A
  1. shall be accessible.
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18
Q
  1. Each fixture trap shall have a liquid seal of at least
  2. 2”
  3. 2-1/2”
  4. 3”
  5. 4”.
A
  1. 2”,
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19
Q
  1. Each fixture trap shall have a protecting vent so located that the developed length of the fixture drain from the trap weir to the vent fitting is not more than
  2. 6 inches
  3. 12 inches
  4. 18 inches
  5. 48 inches.
A
  1. 48 inches.
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20
Q
  1. The area of a circle having a diameter of one inch is .7854 square inches. The area of a circle with a two inch diameter would be
  2. 1.5708 square inches
  3. 2.3562 square inches
  4. 3.1416 square inches
  5. 15.708 square inches.
A
  1. 3.1416 square inches.
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21
Q
  1. The constant used to determine the offset piece using two sixty degree fitting is
  2. 0.414
  3. 0.7854
  4. 1.15
  5. 2.00.
A
  1. 1.15.
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22
Q
  1. If a plumber, using 2 45 degree elbow, determined that the “travel peace” was 17 inches, the offset was most nearly
  2. 10 inches
  3. 12 inches
  4. 14 inches
  5. 17 inches.
A
  1. 12 inches.

.707x17=12.019”.

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23
Q
  1. If a pipe with an outside diameter of 7” is to be fastened against the celling with a U-strep. the distance from the celling around the pipe and back to the ceiling should be approximately
  2. 14 inches
  3. 16 inches
  4. 18 inches
  5. 20 inches.
A
  1. 18 inches.

C/2+2xD/2=3.14xD/2+D=3.14x7/2+D=18”.

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24
Q
  1. If a rectangular tank contains water to a height of 4’-0”, the pressure in pounds per square inch on the base of the tank is
  2. 0.82
  3. 1.50
  4. 1.73
  5. 2.15.
A
  1. 1.73.
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25
Q
  1. If a hot water heater is purchased for S177.80 and the eight percent sales tax is computed, the total cost will be
  2. S177.88
  3. S192.02
  4. S193.08
  5. S195.58.
A
  1. S192.02.

177. 80x1.08=192.02.

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26
Q
  1. If a water meter indicates a total consumption of 684 cubic feet, its equivalent in US gallons would most nearly be
  2. 4,000 gallons
  3. 4,500 gallons
  4. 5,000 gallons
  5. 5,500 gallons.
A
  1. 5,000 gallons.

648x7. 48=5.116.

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27
Q
  1. If a tank contains 8 cubic feet of water at a temperature of approximately 70*F, the weight of water in pounds is
  2. 300
  3. 500
  4. 600
  5. 700,
A
  1. 500.

62. 5x8=500*F.

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28
Q
  1. A sump pit measures 10 feet long by 10 feet wide and 8 feet deep. Assuming that each cubic foot of water is equal to 7.5 gallons, this sump, when half full, will hold most nearly
  2. 750 gallons.
  3. 1500 gallons
  4. 3000 gallons
  5. 6000 gallons.
A
  1. 3000 gallons.

10x10x8x7. 5x5=3000.

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29
Q
  1. A piece of pipe that is 37.875”E-E is equal to
  2. 3’-0 5/8”
  3. 3’-0 7/8”
  4. 3”-1 5/8”
  5. 3’-1 7/8”.
A
  1. 3’-1 7/8”.

37. 875”=36”+1”+.875x8/8”=3x12”+1-7/8”=3’-1 7/8”.

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30
Q 
31. Refer to figure 1 from photos
The center of 1/8 bend 'A' from inside the west wall is
1. 18"
2. 3'-6"
3. 4'-0"
4. 24'-1".
A
  1. 4’-0”.
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31
Q
  1. Question refer to figure 1 from photos.
    Assuming the north-south and east-west walls are parallel, the width of the building from outside and the west wall too outside the east wall is
  2. 29’-1”
  3. 29’-5”
  4. 30’-5”
  5. 31’-3”.
A
  1. 29’-5”.

4’+22’+2’-1”+2x8”=29’-5”.

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32
Q
  1. Question refer to figure 1 from photos.
    If the line between the center of the long turn tee wye and the center of fitting “A” is installed at the rate of a 1/4” per foot pitch, the total pitch would be
  2. 5.2”
  3. 5-1/2”
  4. 5-3/4”
  5. 6-1/4”.
A
  1. 5-1/2”.
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33
Q
  1. Question refer to figure 1 from photos.
    The center line of sweep “B” from outside the east wall is
  2. 23’-0”
  3. 24’-1”
  4. 27’-1”
  5. 27’-9”.
A
  1. 27’-9”.

3’+22”+2’-1”+8”=27’-9”.

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34
Q
  1. Question refer to figure 1 from photos.
    The center to center measurement between the 1/8 bend and the sweep in the south-west corner of the building is
  2. 30”
  3. 48”
  4. 4.935’
  5. 4’-2 3/4”.
A
  1. 4’-2 3/4”.

1. 414x3’=4.242’=4’-2 3/4”.

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35
Q
  1. Question refer to figure 1 from photos.
    The center of eight bend “C” from outside the north wall is
  2. 43”
  3. 48”
  4. 55”
  5. 56”.
A
  1. 56”.

64”-25”+9”+8”=56”.

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36
Q
  1. Question refer to figure 1 from photos.
    The center of sweep “D” form inside the north wall is
  2. 6”
  3. 8”
  4. 9”
  5. 17”.
A
  1. 9”.
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37
Q
  1. Question refer to figure 1 from photos.
    The center to center measurement between the 1/8th bend and sweep in the north east corner of the building is
  2. 3’-3”
  3. 3’-6”
  4. 4’-7”
  5. 5’-4”.,
A
  1. 4’-7”.

1. 414x39”=55”=4’-7”.

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38
Q
  1. The head pressure at the base of a 4” standpipe, 93 feet high, filled with water is
  2. 40 pound PSI
  3. 60 pound PSI
  4. 90 pound PSI
  5. 93 pound PSI.
A
  1. 40 pound PSI.

.433x93=40.269.

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39
Q
  1. The lead pan for a shower will be 3’-0”x3’-0” in size and has a 6” high upstand. Using minimum weight lead at 25c a pound, the cost of this pan will be
  2. S4.00
  3. S16.00
  4. S32.00
  5. S64.00.
A
  1. S16.00.

4x44x4x25=16.00S.

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40
Q 
41. Use photo 2.
If the cylindrical container is partially filled with oil to the height shown,the container is
1. two-fifths full
2. tree-fifths full
3. two-thirds full
4. three-quarters full.
A
  1. tree-fifths full.

6/10=3/5.

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41
Q 
42. Use photo 3.   
The maximum number of gaskets which can be cut from the gasket material as illustrated is
1. 19
2. 60
3. 135
4. 270.
A
  1. 60.

18/4=4, 5x12=60, 60/4=15, 15x4=60.

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42
Q
  1. If a trench is escavated 3’-0” wide by 5’-6” deep and 50 feet long, the total number of cubic yards of earth removed is most nearly
  2. 30
  3. 90
  4. 150
  5. 825.
A
  1. 30.

3’x5,5’x50’/27=30,56 cu yads.

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43
Q
  1. If a plumber scaled a blueprint drawing 1/4”=1’-0” and found that the line measured 9 3/4”. the length of the line represented is
  2. 31 1/2 feet
  3. 36 feet
  4. 39 feet
  5. 42 1/2 feet.
A
  1. 39 feet.

9 3/4x4=39 feet.

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44
Q
  1. A fitting having a 1/16th bend has an angle of most nearly
  2. 5 5/8*
  3. 11 1/4*
  4. 22 1/2*
  5. 30*.
A
  1. 22 1/2*.

360x1/16=22 1/2*.

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45
Q
  1. When tinning a soldering iron (copper) the solder selected should be a good grade of
  2. 40-60
  3. 50-50
  4. 60-40
  5. 95-5.
A
  1. 50-50.
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46
Q
  1. A set of bobbins would be useful to a plumber working on
  2. lead pipe
  3. glass pipe
  4. plastic pipe.
  5. asbestos cement pipe.
A
  1. lead pipe.
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47
Q
  1. The layout or “fold lines” for a lead pan should be made with
  2. an awl
  3. a scribe
  4. a caulk line
  5. a shave hook.
A
  1. a scribe
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48
Q
  1. Four pound sheet lead would have a thickness of
  2. one-thirty secondth
  3. one-sixteenth
  4. one-eighth
  5. three-sixtenths.
A
  1. one-sixteenth (1/16”).
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49
Q
  1. The tool used to flare out openings into which branches are to be wiped is a
  2. bending pin
  3. shave hook
  4. beveled mallet
  5. dummy.
A
  1. bending pin.
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50
Q
  1. A plumber tests a solder pot piece for correct temperature by using
  2. a candle
  3. charcoal
  4. paper
  5. a spit stick.
A
  1. paper -it will turn brown at 640*F.
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51
Q
  1. A flat dresser could be used to advantage when
  2. joining gas service pipe
  3. re-facing a faucet seat
  4. installing chrome plated pipe
  5. constructing a lead pipe.
A
  1. constructing a lead pipe.
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52
Q
  1. The total wight of a piece of 4 pound sheet lead measuring 3’
    - 6” by 3’-0” is
  2. 19 1/2 pounds
  3. 26.4 pounds
  4. 42 pounds
  5. 43.2 pounds.
A
  1. 42 pounds.
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53
Q
  1. A plumber would associate “ticking” with
  2. oil burner controls
  3. solenoid valves
  4. wiping
  5. a thermo coupling.
A
  1. wiping.
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54
Q
  1. When preparing a 4” brass ferrule for wiping, the minimum distance that the ferrule may be tinned is
  2. 1/2”
  3. 5/8”
  4. 3/4”
  5. 1”.
A
  1. 3/4”.
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55
Q
  1. To “clean” wiping solder in a pot the plumber would use
  2. zinc
  3. alcohol
  4. sulphur
  5. a wire brush.
A
  1. sulphur.
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56
Q
  1. Candle is applied to the shaved area of lead to
  2. eliminate tinning
  3. prevent oxidation
  4. prevent corrosion
  5. raise its melting point.
A
  1. prevent oxidation.
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57
Q
  1. Solder may be prevented from adhering to lead by the use of
  2. beeswax.
  3. soil.
  4. sperm candle
  5. resin.
A
  1. soil.
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58
Q
  1. A wiped joint have a minimum thickness of solder at the thickest part of the joint of
  2. 3/8”
  3. 1/2”
  4. 3/4”
  5. 1”.
A
  1. 3/8”.
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59
Q
  1. A brass caulking ferrule is joined to lead pipe by means of a
  2. slip joint
  3. caulked joint
  4. wiped joint
  5. cup joint.
A
  1. wiped joint.
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60
Q
  1. A brass caulking ferrule is used join
  2. screw pipe cast iron pipe
  3. cast iron pipe with lead pipe
  4. lead pipe with screw pipe
  5. screw pipe with copper pipe.
A
  1. cast iron pipe with lead pipe.
61
Q
  1. The thickness of walls of lead bends and traps shall be at least
  2. 1/16”
  3. 1/8”
  4. 3/16”
  5. 1/4”.
62
Q
  1. The maximum developed length of lead pipe (within a structure) that may be used in connection with any one fixture
  2. 3 feet
  3. 4 feet
  4. 5 feet
  5. 6 feet.
63
Q
  1. The basic metals and proportions thereof, of a 63-37 solder that may be used for wiped joints in lead pipe are
  2. 63% lead and 37% tin
  3. 63% tin and 37% antimony
  4. 63% tin and 37% lead
  5. 63% antimony and 37% tin.
A
  1. 63% lead and 37% tin.
64
Q
  1. One of the following is not a lead working tool
  2. turn pin
  3. lead dresser
  4. lead bend
  5. shave hook.
A
  1. lead bend.
65
Q
  1. A screwed drainage fitting should have
  2. excess threads
  3. shallow threads
  4. deep threads
  5. recessed threads.
A
  1. recessed threads.
66
Q
  1. The point located on the 45* elbow (illustrated in photo) in the center of the circle is called the
  2. contour
  3. intersection
  4. vertex
  5. isometric axis.
A
  1. intersection.
67
Q
  1. A tee reads 3”x3”x5” is called a/an
  2. reducing tee
  3. increasing tee
  4. large run tee
  5. bull head tee.
A
  1. bull head tee.
68
Q
  1. The tee (illustrated in figure 4) is read
  2. 3/4”x1/2:x1”
  3. 1”x1/2”x3/4”
  4. 1”x3/4”x1/2”
  5. 1/2”x3/4”x1”.
A
  1. 1”x3/4”x1/2”
69
Q
  1. A system of piping referred to as the Durham system would not be acceptable for
  2. venting
  3. underground use
  4. leader lines
  5. soil stacks.
A
  1. underground use (for galvanize pipe).
70
Q
  1. The fitting (illustrated in photo 5) is
  2. a venting fitting
  3. an eccentric coupling
  4. a concentric coupling
  5. left and right coupling.
A
  1. an eccentric coupling.
71
Q
  1. Pipe joint cement should be applied on
  2. the threads of female fittings only
  3. the threads of male fittings only
  4. the threads of both male and female fittings
  5. either male or female threads , depending on the type of fitting.
A
  1. the threads of male fittings only.
72
Q
  1. Galvanized steel pipe may not serve as a
  2. house drain
  3. soil stack
  4. house sewer
  5. vent pipe.
A
  1. house sewer.
73
Q
  1. Good practice requires that the end of a pipe to be installed in a plumbing system be reamed to remove the inside burr after it has been cut to length. the purpose of this reaming is to
  2. restore the original inside diameter of the pipe at the end
  3. remove loose rust
  4. make threading of the pipe easier
  5. finish the pipe accurately to length.
A
  1. restore the original inside diameter of the pipe at the end.
74
Q
  1. A three standard weight pipe, and a three inch extra strong pipe, have the same
  2. outside diameter
    2, inside diameter
  3. weight per foot of pipe
  4. frictional loss per hundred feet of pipe for equal water flow.
A
  1. outside diameter.
75
Q
  1. The tool that hold the dies when threading pipe, is generally called a
  2. yoke
  3. vise
  4. stock
  5. swedge.
76
Q
  1. In addition to acting as a filler between threads, pipe joint compound also acts as a
  2. permanent bond
  3. hardener
  4. coolant
  5. lubricant.
A
  1. lubricant.
77
Q
  1. A return bend in a pipe line changes the direction of flow by
  2. 45*
  3. 90*
  4. 135*
  5. 180*.
78
Q
  1. A pipe reducing coupling normally has
  2. two female threads
  3. two male threads
  4. one continuous female thread
  5. one male and one female thread.
A
  1. two female threads.
79
Q
  1. A close nipple
  2. has a short section with no threads
  3. is always less than 3/4 long
  4. has ends of different diameters
  5. has threads over its entire length.
A
  1. has threads over its entire length.
80
Q
  1. A Kennedy or Tucker fitting is generally installed on
  2. water lines
  3. gas lines
  4. vent lines
  5. circulating lines.
A
  1. vent lines.
81
Q
  1. Fitting that is galvanized are coated with a layer of
  2. tin
  3. lead
  4. zinc
  5. copper.
82
Q
  1. A device designed to absorb shock caused by the quick closing of valves under high pressure in the water supply system is a/an
  2. cushion
  3. air chamber
  4. high pressure reducing fitting
  5. expansion tank.
A
  1. air chamber (shock absorber).
83
Q
  1. The house control valve located on the water service shall be the type designated as a
  2. globe valve
  3. gate valve
  4. check valve
  5. needle valve.
A
  1. gate valve.
84
Q
  1. Of the following piping systems, the one that is not considered a “stack” when run as a vertical main is the
  2. soil piping
  3. waste piping
  4. vent piping
  5. water piping.
A
  1. water piping.
85
Q
  1. In the sketch (illustrated in figure 6) the trap seal will not be protected because
  2. the trap exceeds the distance permitted from vent line
  3. the vent is below the trap weir
  4. a wet vent is illustrated
  5. water seeks its own level.
A
  1. the vent is below the trap weir.
86
Q
  1. It is important to made certain a ladle does not contain water before using it to scoop up molten solder since the water may
  2. dilute the solder
  3. cool the solder
  4. cause dangerous spattering
  5. prevent the solder from sticking.
A
  1. cause dangerous spattering.
87
Q
  1. The piping of a newly installed drainage system shall be tested upon completion of the rough plumbing with a head of water of not less than
  2. 10 feet
  3. 15 feet
  4. 20 feet
  5. 25 feet.
88
Q
  1. Bacteria that are present in a septic tank and perform a useful function are called
  2. nitrification
  3. scavengers
  4. anaerobic
  5. effluent microbes.
A
  1. anaerobic.
89
Q
  1. The size of a septic tank is determined by the number of
  2. bathrooms
  3. bedrooms
  4. water closets
  5. rooms in the house.
90
Q
  1. In a septic tank the fluid should enter the tank at an elevation
  2. 12 inches above the surface of the liquid
  3. at the surface of the liquid
  4. 12 inches below the surface of the liquid.
  5. half way between the top and bottom of the tank.
A
  1. 12 inches below the surface of the liquid.
91
Q
  1. The term “percolation test” is associated with
  2. restaurant equipment
  3. coffee urns
  4. septic systems
  5. potable water analysis.
A
  1. septic systems
92
Q
  1. The trade term “F & W” is usually associated with
  2. cast iron work
  3. packing
  4. street elbows
  5. brass fittings.
A
  1. cast iron work.
93
Q
  1. The fitting prohibited for use on drainage piping are
  2. double hubs
  3. short sweeps
  4. street elbows
  5. 4”x2” tapped tee wyes.
A
  1. double hubs.
94
Q
  1. A 4” return bend with its unprotected open end a minimum of 6” above grade level would most likely be used as a
  2. siamese connection
  3. fresh air inlet
  4. vent pipe for gasoline storage
  5. gas dryer exhaust.
A
  1. fresh air inlet.
95
Q
  1. The lead in caulked joints for bells and spigot soil pipe shall be
  2. run in one pouring
  3. tested on a brick for purity
  4. designated as 95-5
  5. heated to cherry red.
A
  1. run in one pouring.
96
Q
  1. The accumulation of impurities on the surface overheated lead in the pot is called
  2. dross
  3. scrum
  4. crust
  5. electrolysis.
97
Q
  1. Floor drains shall be of a size to efficiently serve the purpose for which they are intended, but the nominal diameter of the outlet pipe shall not be less than
  2. 1 1/2”
  3. 2”
  4. 3”
  5. 4”.
98
Q
  1. Where a roof is to be used for any purpose other than weather protection, the vent extensions shall be run above the roof surface to a height of at least
  2. 1 foot
  3. 2 feet
  4. 5 feet
  5. 7 feet.
99
Q
  1. For drainage pipes larger than 4” in diameter, the clean out should not be less than
  2. 4”
  3. 6”
  4. 8”
  5. 10”.
100
Q
  1. The discharge from an ejector shall be through a connection located
  2. on the house side of the building house trap
  3. ten pipe diameters up stream from the trap
  4. in a properly vented air tight pit
  5. on the street side of the building house trap.
A
  1. on the street side of the building house trap.
101
Q
  1. Caulking ferrules are generally used as a connection between
  2. lead and cast iron pipe
  3. cast iron and brass pipe
  4. brass and wrought iron pipe
  5. steel and wrought iron pipe.
A
  1. lead and cast iron pipe .
102
Q
  1. The main reason cast iron pipe is particularly suitable for underground service
  2. resists corrosion very well
    2 has a low initial cost
  3. is easy to handle and join
  4. can withstand high pressure.
A
  1. resists corrosion very well.
103
Q
  1. The minimum diameter of the fresh air inlet pipe for a 4” cast iron house drain trap is
  2. 2”.
  3. 2 1/2”
  4. 3”
  5. 4”.
104
Q
  1. If a fresh air tee is properly connected to an 8” house drain, the minimum size for this F.A.I. should be
  2. 3”
  3. 4”
  4. 5”
  5. 8”.
105
Q
  1. A hubless cast iron sanitary system may be installed by using
  2. white oakum
  3. epoxy
  4. rubber/neoprene gaskets
  5. dresser couplings.
A
  1. rubber/neoprene gaskets.
106
Q
  1. When a plumber “sounds” as piece of cast iron soil pipe he is testing for
  2. sand holes
  3. cracks
  4. metal fatigue
  5. water leaks.
107
Q
  1. The invert of a house drain is located
  2. top outside
  3. bottom inside
  4. true center
    4j. bottom outside.
A
  1. bottom inside.
108
Q
  1. A 4”x2” cast iron tapped tee is approved for use on
  2. wast lines
  3. vent lines
  4. gas lines
  5. house drains.
A
  1. vent lines.
109
Q
  1. The minimum allowable fall or grade per foot of house drain is
  2. 1/8”
  3. 1/4”
  4. 3/8”
  5. 1/2”.
110
Q
  1. Caulked joints for cast iron bell and spigot soil pipe shall be firmly packed with oakum or hemp and filled with molten lead to a depth of at least
  2. 1/2”
  3. 3/4”
  4. 1”
  5. 1 1/4”.
111
Q
  1. Oakum is a material used in
  2. lead work
  3. cast iron work
  4. screw pipe work
  5. copper tube work.
A
  1. cast iron work.
112
Q
  1. Tinning the inside edge of a 4” brass ferrule will make a stronger joint when the lead passes through it and is then wiped. This is due to
  2. expansion
  3. bonding
  4. extrusion
  5. capillary action.
A
  1. capillary action.
113
Q
  1. The minimum diameter of water service pipe shall be
  2. 5/8”
  3. 3/4”
  4. 1”
  5. 1 1/4”.
114
Q
  1. A corporation stop is usually found on a
  2. service pipe installation
  3. two pipe jet pump
  4. bourdon gauge line
  5. hydraulic ejector line.
A
  1. service pipe installation.
115
Q
  1. The gooseneck on a copper water service that is connected to the city water main shall be
  2. laid to the left when facing the tap
  3. increased in diameter and reamed
  4. bend with the aid of warm sand
  5. laid to the right when facing the tap.
A
  1. laid to the right when facing the tap.
116
Q
  1. A hacksaw blade having 32 teeth to the inch is the best blade to use when cutting
  2. cold rolled steel shafting
  3. wrought iron pipe
  4. copper tubing
  5. stainless steel pipe.
A
  1. copper tubing.
117
Q
  1. Brass is an alloy of
  2. lead and copper
  3. lead and tin
  4. tin and copper
  5. zinc and copper.
A
  1. zinc and copper.
118
Q
  1. Type “L” copper tubing is color coded
  2. red
  3. blue
  4. yellow
  5. green.
119
Q
  1. Type “K” water service pipe is made of
  2. cast iron
  3. lead
  4. copper
  5. galvanized steel.
120
Q
  1. The type of copper tubing approved for use as water service piping is
  2. DWV
  3. K
  4. L
  5. M.
121
Q
  1. Capillary action takes place in the joining of
  2. screw pipe joints.
  3. bell and spigot joints
  4. compression fittings
  5. copper tube sweat joints.
A
  1. copper tube sweat joints.
122
Q
  1. The term 40/60 solder refers to
  2. 40% lead. 60% tin
  3. 40% tin, 60% lead
  4. 40% tin, 60% antimony
  5. 40% antimony, 69% lead.
A
  1. 40% lead. 60% tin

2. 40% tin, 60% lead.

123
Q
  1. When brazing standard brass pipe fittings to copper or brass pipe, the silver brazing alloy used should have a melting point of
  2. less than 400*F
  3. less than 600*F
  4. less than 800*F
  5. more than 1,000*F.
A
  1. more than 1,000*F.
124
Q
  1. If lead and copper tubing service pipe is to be formed into a goose neck at the connection to a tap, the goose neck shall have an excess of at least
  2. 1 foot
  3. 2 feet
  4. 3 feet
  5. 4 feet.
125
Q
  1. The purpose of the refill tub on a toilet tank is to
  2. refill the tank
  3. restore the seal of the water closet
  4. act as relief if the float ball hangs up
  5. prevent overflow.
A
  1. restore the seal of the water closet.
126
Q
  1. If the flood level rim of a basin is 31 1/2” above the floor, the minimum height the branch vent nay be above the floor is
  2. 30 1/2”
  3. 32 1/2”
  4. 37 1/2”
  5. 39 1/2”.
A
  1. 37 1/2”.
127
Q
  1. Entire or partial loss of the trap seal may result from disuse of the fixture over an extended length of tine. This loss would be due to
  2. evaporation
  3. absorption
  4. osmosis
  5. momentum.
A
  1. evaporation.
128
Q
  1. A plumber would come across a left hand thread when repairing or replacing a
  2. Douglas valve
  3. ball cock assembly
  4. toilet tank lever handle
  5. closet spud and flush elbow.
A
  1. toilet tank lever handle.
129
Q
  1. When a’trip lever waste and overflow is installed on a bath tub, the shoe piece is connected to the
  2. trap
  3. tee
  4. overflow.
  5. tail piece.
130
Q
  1. The type of plumbing work where one would use an escutcheon would be
  2. roughing
  3. finishing
  4. testing
  5. estimating.
A
  1. finishing .
131
Q
  1. A P.O, plug is associated with
  2. bath tubs
  3. water closets
  4. basins
  5. wall hung urinals.
132
Q
  1. Connecting to a rear inlet spud is associated with a
  2. close coupled bowl and tank
  3. steam heating system
  4. wall mounted flush tank
  5. anchored with extra strong bolts.
A
  1. wall mounted flush tank.
133
Q
  1. Water closet bowls for public use shall be
  2. supplied with potable water
  3. disinfected weekly
  4. of the elongated type
  5. anchored with extra strong bolts.
A
  1. of the elongated type.
134
Q
  1. The minimum number of fixture units allowed for a bathroom group containing one lavatory, one bathtub and one water closet (flush tank) is
  2. 4
  3. 5
  4. 8
  5. 10.
135
Q
  1. One of the following which has the smallest “fixture unit” rating is a
  2. wash basin
  3. slop sink
  4. shower head
  5. drinking fountain.
A
  1. drinking fountain.
136
Q
  1. Floor flanges for water closets or similar fixtures shall be of cast brass and at least
  2. 1/16” thick
  3. 1/8” thick
  4. 3/16” thick
  5. 1/4” thick.
A
  1. 1/8” thick.
137
Q
  1. Lavatories shall have waste outlets at least
  2. 1” diameter
  3. 1 1/4” diameter
  4. 1 1/2” diameter
  5. 2” diameter
A

2.1 1/4” diameter.

138
Q
  1. Bath tubs shall have waste outlet and overflows at least
  2. 1” diameter
  3. 1 1/4” diameter
  4. 1 1/2’’ diameter
  5. 2” diameter.
A
  1. 1 1/2’’ diameter.
139
Q
  1. Wast outlets serving single showers, other than those in bath tubs, shall be at least
  2. 1” in diameter
  3. 1 1/4” in diameter
  4. 1 1/2” in diameter.
  5. 2” in diameter.
A
  1. 2” in diameter.
140
Q
  1. Sink shall be provided with waste outlets at least
  2. 1” in diameter
  3. 1 1/4” in diameter
  4. 1 1/2” in diameter
  5. 2” in diameter.
A
  1. 1 1/2” in diameter.
141
Q
  1. The type of water closet that may not be installed as a replacement is a
  2. wash down
  3. washout
  4. syphon jet
  5. blow out.
142
Q
  1. A 12” roughing-in measurement for a water closet means
  2. from the center of the outlet of the water closet to the wall
  3. from the front of the water closet to the wall
  4. from the back of water closet to the wall
  5. from the center of the outlet of the water closet to the center of the toilet tank.
A
  1. from the center of the outlet of the water closet to the wall.
143
Q
  1. A type of hospital equipment which does not require an air gap on the water supply is a/an
  2. operating table
  3. aspirator
  4. toilet
  5. sterilizer.
A
  1. sterilizer.
144
Q
  1. With the exception of commercial dishwashers or laundries, hot water may not be discharged into any parts of a drainage system at a temperature above
  2. 150*
  3. 160*
  4. 170*
  5. 180*.
145
Q
  1. A fitting not permitted on gas piping installations is the
  2. left and right coupling
  3. ground joint union.
  4. malleable iron elbow
  5. gasket type union.
A
  1. gasket type union.
146
Q
  1. When applying a test to gas piping, after all piping is installed and all outlets capped, the plumber shall apply an air pressure test equal to a column of
  2. water at least 6” in height
  3. mercury at least 6” in height
  4. water at least 12” in height
  5. mercury at least 12” in height.
A
  1. mercury at least 6” in height.
147
Q
  1. Individual outlets to gas ranges shall not be less than
  2. 3/8”
  3. 1/2”
  4. 5/8”
  5. 3/4”.
148
Q
  1. When installing gas lines in the building, it is permissible to
  2. re-use gas pipe which has been removed from an existing installation
  3. use gas piping for an electrical ground
  4. use malleable iron fittings
  5. use gasket unions.
A
  1. use malleable iron fittings.
149
Q
  1. Gas piping should be tested under a pressure of no less than
  2. 3 PSIG
  3. 5 PSIG
  4. 7 PSOG
  5. 9 PSIG.

Plumbing (23 decks)

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