Plumbing Red Seal Questions

Trap arms and fixture drains are to be installed with roughly _____ of an inch downward slope for every foot of trap arm length

1/4" per foot less than 3" - 1/8" per foot 4" and higher

What can put a great deal of stress on your neck, shoulders, back, and legs when lifting heavy objects?

not bending at your knees and keeping your back straight

The Propane Storage and Handling Code is ______________.

B149.2-00

The wires of a thermostat are wired to terminals

R,W,G

The ideal location for a circulator pump installed in a hot water heating system is

on the supply after the expansion tank

A toilet seat used in a public washroom must be

elongated open front type

The most common physical characteristics used to measure the quality of water are: temperature, taste, colour, _________ and odour

turbidity

When using grooved pipe from one manufacturer, the fittings from another manufacturer may be used.

False

A settlement loop is installed in water distribution lines that are ______ inches or less

2

Which of the following must the base of every soil or waste stack contain

cleanout and expansion joint

An oil interceptor would most likely be found in a/an:

dry cleaning plant.

A water purveyor has the primary responsibility of:

providing the public with a safe and potable water supply.

A one inch water service to a building may have a _____ valve as the shut-off valve for the building.

stop-and-drain

An air conditioner that discharges 0.05 L/s of condensate into a floor drain, would equate to how many fixture units?

2

After the inspection of a hot water heating system shows that the system pressure is in excess of the designed operating pressure. Which device will cause this problem?

Water-feed valve.

The state in which matter exists can be influence by these two factors:

temperature and pressure

If the zone valve drive motor fails to operate the plumber must:

replace the defective motor.

A 120 Volt hot surface igniter can reach temperatures up to ____F

2600

Which of the following best describes an electric water heater?

one with an immersion type element

A trap arm that does not use siphonic action may change direction in a horizontal plane by up to ____ degrees between the fixture and the vent fitting

135

The suction pipe from the well to the house should be installed at a/an _______ slope

upward

The maximum filling density of any propane container must never exceed ____% of the water capacity stamped on the container

42

1. When installing a private water supply system, a qualified __________ should complete all wiring terminations

electrician

If a wood range is to be converted to a gas range certain adjustments must be made. One major adjustment is the:

replacement of manual dampers with barometric dampers

When an eye is properly formed in a wire rope with the use of a thimble, the eye will have approximately ______ percent

80

A fixture drain of the individual fixture that is not piped through one complete storey is referred to as a:

fixture drain.

Fixtures that are not part of a wet vent group may connect to the wet vent branch and the hydraulic load going into the vent does not have to be included in the wet vent

False

When calculating the fixture unit load of a residence a two inch main floor drain is considered to be ____ fixture units.

2

The common name for sodium carbonate is _________.

soda ash

When a series of water treatment devices are required for a water treatment system the water softener is always located _________ in the series.

Last

Which of the following will have the lowest supply pressure

manufactured gas

Which table should be consulted to determine cleanout size and spacing

4.7.2

Which water systemmay not provide adequate pressure for upper floors of a building

forced system

Over sizing a boiler could result in

the boiler cycling on and offmore frequently

A _________ is a device that replaces the pressure tank and pressure switch on a private water supply system.

Mascontrol

If 1/2 inch PEX tubing is used in a radiant heating system the manufacture recommends a maximum length of _____ feet.

300

A cast iron boiler will have its heat exchanger constructed of

cast iron

Over tightening the bolts on a water closet during installation could result in

the bowl or tank breaking from stress

Which of the following best describes a dual check valve backflow preventer.

used when a hazard is minor in a residential application

The safety device built into an acetylene cylinder is

a fusible link

Gas room heaters installed in hallways in homes for the elderly should?

must be vented type

A double tee wye can be used for connection of two back outlet water closets in a back to back installation.

False ( this allows both branches to drain into each other, need double wye )

How many main categories of check valves are there

3

The Rule Of Thumb (ROT) vent sizing may only be used to determine the vent sizing f

all of the above.

Thermally operated dampers are constructed so that the damper falls closed if the bimetal fail

False

Which of the following best describes a relay coil?

When energized it activates contacts to either open or close.

Nominally vertical means an angle not more than _______degrees of the vertical?

45

If a pipe wrench fails to operate with normal ratchet like action, it is likely the spring is worn out

True

One inch medical gas piping that is run vertically must be supported at least every ___ m.

2.4

What device is used to measure flue gas temperature

pyrometer

What is the problem with a thermostat if the heating system cycles too often?

the thermostat is exposed to direct sunlight or a heat source

A double compartment kitchen sink is being replaced with a triple compartment kitchen sink. What drainage changes are necessary to complete the installation?

The fixture trap and fixture drain is to be one pipe size larger than largest sink outlet.

Which of the following is the minimum size of a clean-out needed on a 6" sanitary building drainage main clean out?

4in

What is required to activate an electronically controlled water on/off device for a sink?

a beam of light is interrupted

If a backwater valve is installed in a building drain it must be:

normally open

Water heaters, hose bibs and sill cocks are normally protected from backflow with

A vacuum breaker

An aquastat on a hot water system will open when:

high maximum temperature is reached

Due to water pressure and sudden changes in water velocity it is imperative that _______ be installed at every point where the water distribution pipe changes direction or elevation

thrust blocks

Which of the following best describes a fuse?

A device that interrupts current at a certain set value

When the floor area is sprinklered, which of the following is not an acceptable way of venting smoke?

fixed glass windows

What minimum depth in mm should drainage pipe be buried?

300mm (12")

. What is required when installing a deep well jet pump?

Foot valve is required on the jet suction line.

What piping arrangement would ensure that domestic hot water is readily available to a plumbing fixture?

Recirculation line on the water system

If you found that you have a standing pressure of 7 inches w.c. and an operating pressure of 5.9 inches w.c. then

the gas line is undersized

The 120 Volt power supply for a humidifier can be supplied by connecting to _______ contacts on the electronic control board.

HTG ACC and COM

. How high may scaffolding be before you need a safety rail?

7-1/2 '

If a kitchen sink in a single family dwelling unit is individually vented it requires a vent pipe that is ____ inches.

1 1/4"

The heat exchanger in a mid efficiency furnace is intended to transfer heat from the

combustion chamber to the circulating air

When using a U-tube meniscus the pressure is measured by

calculating the difference between the levels on either side

When sizing water lines it should be considered that

all fixtures will be on

When performing a hot tapping operation, it is recommended to be prepared to shut down the pressurized piping system, in case an unsafe situation occurs.

True

An appliance has a high altitude rating for 4500 feet above sea level. For every additional thousand feet above the 4500 feet above sea level the input rating of the appliance must be de

4%

When installing automatic air vents on a hot water heating system you must make sure that it is?

located on the highest point in the system.

When installing gang showers, the showerheads must be ______inches apart

30

A roof where people can go and do such things as sun-tanning must have its vent terminal at least _____ metre(s) above the roof

2.0

An underground water-bearing strata that is capable of yielding a supply of water is the definition of a/an ________.

aquifer

Where would a floor mounted hydronic cooling convector be located in a room?

On the wall with the highest heat gain

The pressure system of a private water supply system should provide a volume of flow at least equal to

the peak demand

Which of the following does streptococci cause?

strep throat and blood poisoning

What type of plastic pipe is used for distilled water and de-ionized water systems?

unpigmented polypropylene

Which of the following describes reduced pressure fall-off?

the change in the reduced flow pressure below the no-flow pressure required to open the valve

At what angle is the point on a centre punch ground?

90 degrees

Which of the following is not a type of pressure tank used on private water supply systems?

Spinning disc

Which of the following best describes the term "rainwater leaders"

a vertical rainwater pipe often connected to a downspout

On propane 2-psi residential system the system regulator must be installed within ____metres of the exterior wall if it is installed outdoors.

1

What is the minimum trap size of a bidet?

11/4"

Washbasins in a female public washroom should?

provided with shut-off valves installed on the water supply to the fixture

Which garbage grinder has an internal switch that is activated when the sink stopper combination actuator is put in place?

batch feed

What are written by both federal and state legislatures that determine the scope of practice?

laws

Copper pipe has a ____% greater carrying capacity than steel or iron pipe

20

A/an _________ is a positively charged ion in solution.

cation

The minimum working pressure for propane cylinders is _____ psig.

240

Electrolysis is a damaging force that can occur when these two metals come into contact?

ferrous metals and non ferrous metals

The septic chamber contains ______ bacteria that assist in the breakdown of the sewage

anaerobic

The main types of interceptors are designed to collect:

Grease, Oil, Solids

Thermal pipe movement can be accommodated by

slip type expansion, mechanical expansion joint, offsets and loops

Where is a non slam check valve used or placed?

bolted between two flanges

What device controls the intervals at which effluent is discharged to a gravity fed distribution field?

Bell and siphon

Trapping is required if the rainwater pipe is connected to a separate storm drain.

False

An outside fresh air supply must be installed at least _____ inches above finished grade level

12