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Reveiw Study Package #4 > All Multiple Choice Questions > Flashcards

All Multiple Choice Questions Flashcards

1
Q

How would a tagline be attached to a pipe?

A

By a clove hitch with 2 —- 1/2 hitches

Devon

Sheet bend ( ties two ropes together of different lengths) “oh sheet these ropes are two different lengths” use sheet not

Reef knot is for two ropes if the same length

Timber hitch — fuck —

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2
Q

When a well pumped in a low yield well cannot meet the demands of the house. What is a possible solution?

A

Install a cistern

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3
Q

How would you pipe a gravity septic field on sloped ground in order to ensure even flow distribution of effluent?

A

Install laterals across the slope at similar depths (perpendicular)

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4
Q

If workers are required to enter a trench, that is over 4 feet in depth, a safety point of entry and exit must be provided with how many feet of the work

A

25 feet

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5
Q

What’s the maximum length of a lanyard?

A

3 m

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6
Q

A water heater with a working pressure rating of 150 psi must have a TMP relief valve set at what

A

Max 150 psi

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7
Q

What is the purpose of a TY at the outlet of a septic tank?

A

To help vent the discharge of influence

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8
Q

What is the main advantage of a two line pipe drawing over a single line pipe drawing?

A

More representative as it’s drawn to scale

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9
Q

How can a crack in cast-iron be found before pipe is installed?

A

“Sound it” ( they’re talking about the sound. It makes when you bang it on shit.)

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10
Q

When checking locations for canning sleeves in slabbed, what should be used for reference measurements?

A

Grid lines

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11
Q

On a wall that is 5.4 m long what is the maximum number of evenly spaced showerheads

A

Seven

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12
Q

From the following, which is not a method of controlling a DHW recirculating pump.

A. Pressure switch
B. Aquastat
C. Normally closed switch (content flow)
D. A timer.

A

A- Pressure switch

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13
Q

What is another term for “T drilling?”
_____ Tees”

A

Extracted tees

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14
Q

The tool used for packing Oakham is a what

A

Yarning iron
Memory
Yarning = packing
Looks like scrapper for drywall missing

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15
Q

The tool used for packing the lead tightly against the INSIDE of the hub is called

A

Outside iron
Memory
Outside iron = inside hub

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16
Q

The tool used for packing the lead tight AGAINST the pipe in the hub is a

A

Inside iron
Memory
Inside = against

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17
Q

What is the volume of a cylinder that has a diameter of 1 m and a height of 800 m

A

0.628 m³

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18
Q

Where is the vacuum breaker located on a mop sink?

A

On the spout

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19
Q

What is the purpose of the threaded tapping on a well head cap

A

To attach a vent

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20
Q

Where is the lowest point of pressure on a two pipe deep well jet pump installation

A

The impeller eye

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21
Q

What would be a reasonable remedy for water hammering in an old house

A

Add extra fasteners to the water pipe

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22
Q

What is the minimum amount of free board in a septic tank?

A

12 inches

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23
Q

What is the purpose of free board in a septic tank?

A

To allow the accumulation of scum

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24
Q

What is the minimum size supply pipe to a urinal flush valve?

A

Three-quarter

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25
Q

What is the advantage of a compound leverage wrench over a straight pipe wrench?

A

It takes less effort to turn the pipe

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26
Q

How is the water added to a cooling tower?

A

Through a RPBA and an air gap

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27
Q

A jet pump does not produce enough pressure. The simplest solution would be what.

A

Increase the cut and cut out setting at the pressure tank pressure switch

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28
Q

An unfed gas supply to a unit heater requires

A

A shut off and a union

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29
Q

What is the direction of unit heater should face when installed in the garage with overhead doors?

A

Down towards the door from above and beside the door ( what in the fuck)

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30
Q

When installing an irrigation system, one of the most important layout criteria is what

A

Sunlight

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31
Q

What is installed with a water metre to prevent settling?

A

Meter shoe

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32
Q

What is annular spacing?

A

The airspace around the pipe

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33
Q

A flush valve activates when a person walks past a urinal what is the solution of this?

A

Adjust the auto flush valve sensor

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34
Q

A gas fired heating unit is installed on a roof. How is the pipe supported?

A

Pressure treated wood blocks

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35
Q

An RO system works better with What kind of water ( think of water treatment shit)

A

Neutral water on the pH scale

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36
Q

How would you change the fill level on a flush tank for water closet?

A

Adjust the metering screw

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37
Q

Where is the cleanout located on a recessed grease interceptor

A

Immediately downstream of the interceptor

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38
Q

The five psi differential pressure test on a medical gas system is

A

A cross connection test

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39
Q

When should a manhole be provided with vent?

A

If located within a building

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40
Q

A man hole shall have a minimum base dimension of what (in meters)

A

1 m, except at the top 1.5 m may be tapered from 1 m down to a minimum of 600 mm at the top

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41
Q

When installing a chiller, spring isolators would be used for

A

Vibration dampening

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42
Q

Flow control roof drains may be installed provided

A

There is at least one drain for every 900 m²

2.4.10.4 sentance (e)

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43
Q

When a centrifugal pump is added in series with another of the same size and model, what will happen?

A

The pressure output will theoretically double

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44
Q

When a centrifugal pump is added in parallel with another of the same size and model, what will happen to the flow?

A

The flow rate will theoretically double

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45
Q

What is the specific weight/gravity of natural gas?

A

0.6

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46
Q

The chemical symbol for natural gas is

A

CH4

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47
Q

A barrier free water closet insulation would require centreline of the water closet bowl to be how many millimetres from the side wall

A

450 mm (18”)

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48
Q

A sewage treatment plant would require which minimum backflow prevention for the water service

A

RPBA and air gap

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49
Q

A radioactive nuclear plant would require what minimum of backflow prevention

A

RPBA and air gap

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50
Q

What backflow preventer could be installed in an area subjected to flooding provided their test costs were plugged

A

DCVA

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51
Q

A circulator for a hydronic heating system would be installed where on the system

A

Pumping away from the expansion tank

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52
Q

The drainage hydraulic load on a 2 inch floor drain in a washroom would be what

A

There is no load

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53
Q

The cushion tank in a hydronic heating system must be sized to allow for approximately what percent of expansion of water

A

4%

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54
Q

Salty tasting water is drawn from the tap of a fixture in a rural water system with a water softener. What is the probable cause?

A

The rinse cycle is too short

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55
Q

A t&p relief valve sensing element must be located so that the sensing element is where

A

Located within the top 150 mm of the tank

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56
Q

A flow switch use in fire protection system serves what purpose

A

To detect water flow and activate an alarm

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57
Q

The minimum air brake for a three-quarter relief valve drain from a T&P relief valve is

A

1 inch

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58
Q

To complete burning one cubic foot of natural gas require how many cubic feet of air

A

15 ft.³ of air

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59
Q

A zeolite is found in what device

A

A water softener

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60
Q

What is the maximum length of a fixture supply tube?

A

750 mm

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61
Q

When approved, the best location to connect a fire sprinklers supply main to a water main in a building is

A

Upstream of the water meter

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62
Q

What is the maximum distance between cleanout on a 4 inch building drain

A

30 m

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63
Q

The flood level rim of a barrier free water closet is what

A

450 millimetres
18”

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64
Q

What is the maximum number of showerheads on a wall 6000 mm long if the spacing between them is equal and there is only one drain in the room

A

Six
2.2.2.3 sentence (2)

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65
Q

This type of pump would require a vent to remove air from the pump casing before running the pump. What type of pump is it?

A

Centrifugal

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66
Q

When is a pipe saddle used

A

Stop roller hangers from damaging pipe installation

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67
Q

The minimum natural gas pressure supplied to a domestic gas fired hot water heater is

A

4 inches of water column

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68
Q

When reading a Philadelphia rod in imperial measurements and the rod reads 5.6 the number six stands for what

A

7.2 inches

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69
Q

What colour is used in the label for medical gas oxygen lines?

A

White background with green lettering

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70
Q

What colour is used for labelling on a medical air line?

A

Either black background with white lettering or a white background with black lettering either or is correct

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71
Q

What colour is used for the label on a medical vacuum line?

A

Yellow background with black or silver lettering

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72
Q

The minimum distance between a side sidewall and a centre line of a barrier free water closet is

A

18 inches

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73
Q

What colour is used for the label on medical gas nitrous oxide line

A

Metallic silver or white lettering with blue background

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74
Q

The approximate distance between the non-grab bar wall or partition in the centre line of the barrier free water closet is what distance

A

42 inches, 1050 mm

Remember- the minimum size of a handicap stall is 1500mm and the toilet has to be installed 450mm from the other sides finished wall

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75
Q

What is the most often used hot water heating system in apartments?

A

Baseboard Wallfin system

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76
Q

If an air vent is required in a location that is hard to access a hot water heating system. What type would you use?

A

Automatic vent

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77
Q

When there is a low pH level in a boiler, what would you add?

A

Caustic soda

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78
Q

Which one insulated on a commercial hot water system the supply or the return?

A

Both! big surprise

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79
Q

What regulates the volume of a flow on flush valve

A

Wall stop

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80
Q

What is the minimum temperature that a dishwasher has to be to kill bacteria

A

180°F

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81
Q

What type of backflow preventer is on a service sink?

A

AVB ( atmospheric vaccume breaker)

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82
Q

At the bypass on a flush valve is totally plugged, what would be the outcome?

A

The valve will flush continuously

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83
Q

Where are the backup nuts located on a wall hung toilet

A

Between the wall and the bowl

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84
Q

How are wall hung carriers adjusted to compensate for varying wall thicknesses

A

By the use of an adjustable nipple

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85
Q

What type of toilet bowl is not allowed to be installed?

A

Wash down toilet bowl

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86
Q

If a flush valve urinal was noisy and splash water over the rim when flushed what would you do?

A

Adjust the control stop to decrease the flow

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87
Q

If a grease interceptor is used as a trap what is the maximum length of the trap arm?

A

Based on the outlet diameter at 1 to 50 ratio of grade

88
Q

What provides the closing forces of a solenoid valve used in a water system?

A

Inlet pressure plus spring pressure

89
Q

What type of plastic are both ABS and PVC categorized as

A

Thermoplastic piping

90
Q

What type of copper can be obtained in hard temper only?

A

DWV copper

91
Q

What is the valve called on a city Waterman?

A

Corporation stop

92
Q

What is the weakest type of weld can be welded pipe

A

Continuous welded

93
Q

What is the maximum working pressure of sch. 40 pipe?

A

150 psi

94
Q

How is copper tubing annealed?

A

By heating to annealing temperature

95
Q

Which of the following is a non-makeup joint
a. Hub spigot
B. Socket welded
C.Hubless cast-iron
D. Copper sweat.

A

Hubless cast iron (C)

96
Q

What is used to join copper to galvanized pipe?

A

A dielectric fitting

97
Q

A toilet is to be reset in a newly renovated bathroom that is recently had a new subfloor and ceramic tile installed. What would The Plumber do?

A

Use a sponge foam gasket

98
Q

When soldering a copper joint which steps shall be taken?

A

Clean the surfaces,ream, use flux as required, wipe the surface of all residuaes

99
Q

When joining concrete pipe what surfaces require lubrication

A

Pipe end and gasket

100
Q

Calculate the total length of a hydronic baseboard required for the following installation. The room is 20’ x 30’ heat loss equals 15 BTUs per hour per foot squared the baseboard rating is at 500 BTUs per foot.

A

18 feet

101
Q

What high temperature heating unit would be utilized in a kitchen with no available wall space

A

Kick space fan coils
High temperature boil operate at 250f•
With no wall space kick space fan coils are the only thing capable of handling 250f•
( with the options givin in question )

102
Q

When a water service is installed in corrosive soil, what type of piping should be used?

A

Piping suitable for the application

103
Q

The best location for an air scoop on a cooling system is the area of

A

The lowest pressure and highest temperature

104
Q

Now, how should a septic header be installed?

A

Installed flat without grade

105
Q

If a water service is installed in the same trench as a sanitary service, how should the waterline be placed?

A

Beside and above the sanitary service

106
Q

What does UV water treatment remove

A

Bacteria

107
Q

Water backups into a building discharge system during a heavy rainfall. What should a plumber check first

A

The back water valve

108
Q

A jet pump has too much clearance between the impeller and the volute. What would this cause?

A

The pump to not shut off
The excess room in the pump will have the water be able to have some water remain in the pump and pressure and flow will be decreased and not able to meet demand and the pump will not shut off.

109
Q

When bending a pipe to 90° using a hydraulic bender when should the operation stop?

A

Just after the 90° mark

110
Q

When do you remove the restraint banding of an expansion joint?

A

After testing
When testing stack with an expansion joint the pressure during the testing , banding will be strapped around the expansion so it will not fully expanded

111
Q

What fixture could indirectly act as a trap primer?

A

A drinking fountain

112
Q

What pressure should a domestic water pressure tank be charged to

A

2 to 3 psi below the cut in setting

113
Q

What is the purpose of a receiver tank on a compressed air system?

A

Reducing cycling of the compressor

114
Q

If a deep well, jet assembly must be lowered in a well what other consideration is required

A

Adjust the control valve
Adjusting the control valve is nessasary to control how much water comes through the drive line. The drive line sprays water through the Venturi creating a negative pressure with in the system. The control valve controls the amount of water in the drive line.

115
Q

An RO unit is experiencing a low outlet pressure what would be the cause?

A

The membrane is plugged

116
Q

What type of water do RO units work best with

A

Warm water

117
Q

What is used to regenerate an iron filter that is used for domestic water systems

A

Potassium permanganate

Potassium permanganate is for a green sand manganese filter. The Potassium permanganate REGENERATES the sand manganese filter.

118
Q

What must be done to the downstream piping of a RO unit after installation?

A

Disinfected and flushed with product water

119
Q

Aside from hardness what does a water softener remove?

A

Iron

120
Q

If two pipes connected to a deep well jet assembly and one of them is 1-1/4” suction line what would the driveline be in size?

A

A 1 inch driveline
Your drive line is always one NPS

The drive line is the line bring water down to the Venturi and the suction line brings water to the pump.

121
Q

How is the flush affected? If the bypass orifice screwed on a water closet flush valve is partially blocked

A

The flesh length will be longer

The bypass is the small orifice that lets water get in and above upper chamber that shuts of flow to toilet. (Within The flush valve) the flush will be longer because it takes longer to shut the valve off.

122
Q

How many urinals may be flushed by a direct flush valve?

A

One …

123
Q

What would be required to braze a 2 inch brass MIP adaptor onto a copper pipe

A

Brazing high temperature flux
When brazing BRASS on to COPPER
“ when brazing dissimilar metals (brazing is at 1100-1400f• ) that’s when you would a high temperature flux”

124
Q

How do you adjust the temperature of a water delivered by a pressure balancing valve

A

Adjust the limit stop

125
Q

What is the best way to increase the volume of water flow through a distribution system?

A

Increase the pipe size

126
Q

If a new section of copper is being added to a medical gas system, how are the ends of the copper cleaned?

A

With open mesh abrasive of cloth

127
Q

What part would need replacement if a pump was leaking between the motor shaft and the pump body?

A

The mechanical seal

128
Q

A bottle used to collect a water sample from a private water system should be

A

Sterilized and sealed

129
Q

The pressure at the discharge of a submersible pump is directly related to

A

The number of impellers within the submersible pump

130
Q

What would be an indication that an area isolation valve for a medical gas system has been closed

A

There will be alarm sounding, the valve handle will be 90° to the piping, the plexiglass cover for the valve will be off and cannot be replaced

131
Q

The area shut off for a medical gas system would be what type of valve

A

A full port ball valve

132
Q

Where is the best location for hydronic heating baseboard wallfin

A

On outside wall underneath a window

133
Q

How much pipe would be saved on a 6 m offset of 45 elbows were used rather than 90° elbows

A

3.52 m

134
Q

What would be the minimum size for a sleeve through a concrete wall if it is to allow for a 3 inch inside diameter pipe that has a W.T.of 5/16, with 1 inch insulation and a half inch annular spacing

A

6 5/8”

135
Q

What is the primary substance found in hard water?

A

Calcium bicarbonates, and magnesium sulphate

136
Q

How far away should the tool rest be from the face of the wheel on a bench grinder?

A

1/8 of an inch

Bench grinder is the table mounted 2 wheel grinder seen usually in a work shop. The tool rest is the place you rest the material that is being grinned down. The gap between the tool rest and the grinder wheel is 1/8th of an inch maximum.

137
Q

What method of joining copper waterlines underground is unacceptable/prohibited

A

Soldering

138
Q

What is the proper height that a urinal should be set at

A

At the average height of the people using it

139
Q

What type of gauge is used on backflow assemblies for testing?

A

A differential pressure gauge

140
Q

Which tool would be used to cut 2 inch and smaller steel pipe on a tri stand

A

Single wheel pipe cutter

141
Q

How can hard temper copper tubing, be bent?

A

It can’t…

142
Q

What is the term given to the practice of suspending multiple pipelines together

A

Trapeze hangers
Trapeze hangers is just unistrut.

143
Q

Which code covers the requirements for fire stopping within a building

A

National building code

144
Q

Which situation would require the installation of a pump rather than a syphon in a dozing chamber of a septic tank

A

If the disposal field is at a higher elevation

145
Q

What is the purpose of a baffle or tea on the outlet of the septic tank?

A

To retain scum in the tank

146
Q

How can underground pressure piping be protected from separating other than the use of thrust blockers?

A

Continuous rodding

Continuous rodding is when the fittings of the underground piping and fittings are bolted together from rods exceeding through each fitting connecting to the one adjacent to it. It is than bolted together so there so that that they are protected from blowing apart

147
Q

What is typically required on a water distribution piping supply for supplying each floor of a high-rise building?

A

A pressure reducing valve

148
Q

What piece of piping equipment is also required when booster pumps are used in a water distribution piping of a high-rise

A

An expansion tank

149
Q

How much expansion would take place in 300 feet of copper tubing if it’s heated from 70°F to 180°F and the C.O.E.for copper is 0.0000095?

A

0.3135 feet

150
Q

Which of the following items would be required to be installed for a dowfed heat transfer unit

A. isolation valves and a drain

B. Unions and a manual air vent

C.isolation valves in an automatic air vent

D manual air vent and drain.

A

A. Isolation valves and drain

151
Q

What is the characteristics of water that a reverse osmosis system won’t affect

A

Bacteria

152
Q

In the direction of flow, what would be the installation sequence for a water softener, sand filter, and carbon filter

A

In direction of flow sand filter, then carbon filter and lastly, a water softener

153
Q

How should a float switch be wired to a pump supplying water to a cooling tower?

A

In series with an upstream of the pump

154
Q

Which of the following would be of most importance as a consideration when determining the location of the boiler
A.the piping route
B.the venting route
C.the wiring route
D.the gas piping route

A

The venting route B.

155
Q

On a day-to-day basis, what simple task would prevent cross connection when installing medical gas piping

A

Labelling the piping as it is installed

156
Q

What safety device is installed in an electrical circuit to prevent access amperage draw from a pump

A

A circuit breaker or fuse

157
Q

If a pump has a total head of 235 feet and a suction head of 18.25 feet. What would be the discharge head?

A

216.75 feet of head

158
Q

What is the most likely cause of low production flow from an extending jet pump?

A

A leak in the suction piping

159
Q

What would be the result of a leaky foot valve on a jet pump installation?

A

The pump comes on occasionally without a demand on the system

160
Q

What would be the first indication that the thermostat on an otherwise properly operating electrical hot water heater was faulty

A

The TNP relief valve would trip

161
Q

What is used to join “duriron” pipe together?

A

Mechanical joints or clamps

162
Q

Which of the following types of discharge may be used to prime a trap
A. a laundry tray
B.a sterilizer
C.a deli display case
D.a drinking fountain

A

D. A drinking fountain.

163
Q

Which of the following may not be used to prime a trap?
A. a T into the outlet of a direct flush valve to a toilet
B. a T into the vertical line feeding a showerhead
C. the drain from the ice bin of an ice machine
D. a T into the fixture outlet pipe from a laboratory

A

D.
A tee into the fixture outlet pipe from a laboratory

164
Q

The discharge from a clothes washer would be termed into what kind of waste ( sewage, clear water, grey water. ECT.)

A

Sewage

165
Q

What is the maximum length of a fixture outlet pipe into a grease interceptor?

A

1200 mm

166
Q

What is the term given to a second area of a floor drain body that can be drilled and tapped

A

A boss

167
Q

Flow from which one of the following could be used to prime a trap
A. A TNP relief valve
B. A shower drain
C.a shower showerhead
D.a basin

A

C.a showerhead

168
Q

If sewage contained discharge that may impair the sanitary drainage system what must be done

A

It must be properly treated before entering the drainage system

169
Q

How must vent from a stump be terminated?

A

As you would any other vent

170
Q

Where is the discharge from a sewage sump supposed to terminate?

A

Into the building, drain downstream of the building trap
2.4.6.4 sentence (6)

171
Q

If a copper tube was supported by a steel hanger, what would be the result?

A

The steel hanger would be damaged only in the presence of electrolyte

172
Q

How is water stored that has passed through an RO unit in a residence

A

It is stored in small quantities for limited use

173
Q

What is the underlying reason for the 24 hour clock used on a water softener

A

It has to regenerate soft water every three days, a.m. and p.m. Settings are prone to being mixed up when setting the clock, so that there is consistency between softener manufacturers

174
Q

How is the steam main installed in a steam system?

A

Graded down and away from the boiler at 1 inch/20 feet

175
Q

On what principle does a float trap in a steam system work?

A

The differences in density between the condensate and the steam

176
Q

How does a mechanical steam trap operate?

A

It senses the difference in tempature between water and steam

177
Q

A low pressure steam boiler has an operating pressure that is set at 5 psiG below the maximum allowed by the A.S.M.E code the pressure troll has a differential of 4 psiG what is the cut in pressure?

A

Six psiG

178
Q

What is a spool drawing?

A

An isometric drawing of a part of a pre-fabricated piping system

179
Q

What is a wraparound used for?

A

To make a square straight, cut around pipe

180
Q

What is a “thread o let”?

A

A threaded branch welded into a steel pipe

Similar to a saddle BUT the hold is drilled and than the threadolet ( looks like a Victoria saddle with out the bolts or clamps, “the threaded portion”) is put in place and than WELDED

181
Q

What type of cutter Wheel is used for cutting ABS pipe?

A

A large diameter wheel for a large pipe and a small diameter wheel for small pipe

182
Q

What is the smallest size drain pan outlet for a three-quarter T&P relief valve

A

Inch and a quarter

2.6.1.7 sentence (10)
Also 1-1/4 is the smallest drain allowable for drainage

183
Q

When attaching wire rope clips to create a loop, which clip is installed first

A

First, the farthest from the thimble, then the nearest one then the middle one

184
Q

What type of coupling would be used when attaching a cut glass pipe to a glass fitting

A

a plain to bead coupling

185
Q

What do you do to a coupling for glass piping to prepare for installation

A

Wet it with water

186
Q

Where is a buffer tank used?

A

In a ground service heating system

The geothermal manifold is underneath the ground taking heart from the earth and transferring the heat through the refrigeration cycle to heat the water. The water is than stored in a buffer tank to reduce cycling of the pump.

187
Q

What is the minimum size blow down for a steam boiler?

A

Three-quarter inch

188
Q

How many US gallons per minute is 3.5 L a second

A

55.4 US gallons per minute

189
Q

What would this formula apply to: “ G.P.G x G.P.P x 3 days

A

When sizing a water softener

190
Q

How many PPM is 2 G.P.U.S.G

A

34.2

191
Q

How would a vacuum pump for medical gas systems be used

A

On an intertia base with flexible, piping connections

192
Q

What is the maximum allowable temperature to a bathtub?

A

49°C

193
Q

A domestic hot water tank filled with water is at a temperature of 50°F. If the target temperature is 60°C how many degrees Celsius must be added.

A

50°C

194
Q

The elevation of a reference benchmark is 110.366 m a backside reading of 1.936 m is taken and the foresight reading on the floor drain is 2.442 m. What is the elevation of the floor drain?

A

109.860 m

195
Q

A water softener system is installed along with an iron filter what would be the probable cause of iron occurring in the house water along with a reduction of flow

A

A malfunctioning iron filter and a plugged resin bed

196
Q

If a shallow well pump requires 20 feet of lift and 40 psi is needed at a pressure tank what is the minimum total lift required?

A

112 foot minimum lift

197
Q

What would be the cause sugaring on the inside of a stainless steel weld?

A

Not enough purged gas flow

198
Q

If a submersible pump was set at 400 feet below ground and discharging through a poly drop pipe. How would it be supported?

A

By a cable

199
Q

How should asbestos pipe be cut out when using a power rotary cutter?

A

At low speed and wet pipe

200
Q

How should concrete pipe be cut when using a powered rotary cutter?

A

At high-speed and wet pipe

201
Q

What is the proper order of steps taken to replace the spring coupler in a three-piece circulator?

A

Turn off the power disconnect motor loosen set screws replace coupler

202
Q

A hydronic heating system contains 200 L of solution which is 70/30 water/glycol how much of the solution must be drained in order for enough 100% glycol to be added to bring the system to a 50-50 ratio

A

57 L
200 X 20% (glycol added) /70 H20

203
Q

What type of drain assembly is installed on a barrier free wall hung basin

A

Offset P.O.

204
Q

What is the differential pressure setting on a one post pressure switch for a pump?

A

20 psi

205
Q

A class a fire extinguisher is used on _______ and contains _________

A

Combustible materials and contains water

206
Q

When using a low velocity power actuated tool the device fails to fire when the trigger is pulled what should you do first

A

Keep the tool in position and wait 30 seconds

207
Q

How many 2 inch pipes does it take to equal the volume capacity of one#
6inch pipe

A

9#—- 2inch pipes needed

208
Q

When using oxy fuel, welding and cutting equipment, what does a flashback arrest your protect the operator from?

A

Flames travelling back into the hose

209
Q

How often must a horizontal piece of 3/4inch type M copper be supported

A

Every 2.5 m

210
Q

What would water with a PH of 5.5 be considered

A

Mildly acidic

211
Q

Which of the following would be allowable for underground water distribution?
A.type M soft
B.type L hard
C.type K soft
D.type DWV

A

C. Type K soft

212
Q

Which of the following is not approved method of joining cast-iron waste pipe
A. a compression joint
B. Welded joint.
C.a mechanical joint
D.a chaulked joint

A

B. A welded joint

213
Q

What is the purpose of a dielectric union?

A

To prevent corrosion

214
Q

If one end of gas pipe needs to be cut out what type of coupling should be used?

A

Bead-to-plain

215
Q

How is a bell and spigot pipe installed?

A

With the bell upstream

216
Q

What seals a lead and Ockham joint

A

The Ockham

217
Q

What is a running rope

A

Is it a way of supporting/helping lead and Olkhum joint during the installation of a horizontal joint. The rope wraps around the pipe, attach to the rope there is a clip that can attach to the END of the rope to keep rope tight around the pipe. Those keeps the lead from leaking out of the joint.

Reveiw Study Package #4 (1 decks)

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