Fourth Year - Plumbing Interprovincial Practice Exam 1 Flashcards
You are required to use a 20 foot ladder placed up against a building that is 40 feet high. At what horizontal distance from the base of the building must the ladder be?
A. 4’.
B. 5’.
C. 6’.
D. 7’.
B. 5’.
Confined spaces are hazardous environments because they usually have:
A. Explosive atmospheres.
B. Restricted access and egress.
C. Flood hazards[][][][][][][][][][][][][][][]
D. Limited room for maneuverability.
B. Restricted access and egress.
Scaffolding erected __ feet above the ground must have guard rails.
A. 4.
B. 6.
C. 8.
D. 10.
D. 10.
Class “A” fire extinguishers are used on and contain:
A. Flammable liquids. CO².
B. Metal. CO²[][][][][][][][][][][][]
C. Electrical components. Foam.
D. Combustable material. Water.
D. Combustable material. Water.
When using a Hilti powder actuated fastening tool, the device fails to fire when the trigger is pulled. The first thing you should do is?
A. Keep the tool in position and wait 30 seconds.
B. Remove the cartridge[][][][][][][][][][][][][][][][][][][][][][][]
C. Inspect the magazine[][][][][][][][][][][][][][][][][][][][][][][]
D. Depress the trigger again[][][][][][][][][][][][][][][][][][][]
A. Keep the tool in position and wait 30 seconds.
Referring to the figure below, determine how many 90° fittings would be required to construct the piping arrangement.
A. 4.
B. 5.
C. 6.
D. 7.
A. 4.
How many 2” pipes does it take to equal the volume capacity of a 6” pipe?
A. 2.
B. 5.
C. 7.
D. 9.
D. 9.
When using oxy-fuel cutting and welding equipment, a flashback arrestor protects the operator from?
A. Flame traveling into the hoses.
B. Bright flashes[][][][][][][][][][][][][][][]]
C. Electrical shock[][][][][][][][][][][][][]]
D. Material blowback[][][][][][][][][][][]
A. Flame traveling into the hoses.
Horizontally run 3/4” type M copper pipe must be supported every:
A. 1 meter.
B. 1.2 meters.
C. 2.5 meters.
D. 3 meters[][]
C. 2.5 meters.
Referring to the figure below, find the depth of the pipe invert at dimension X.
A. 1.85 m.
B. 1.90 m.
C. 1.95 m.
D. 2.00 m.
C. 1.95 m.
Water that is determined to have a pH of 5.5 would be considered:
A. Mildly alkaline.
B. Very alkaline[]]
C. Very acidic[][][]
D. Mildly acidic[]]
D. Mildly acidic.
Which type of copper tube is permitted for underground water distribution?
A. Type M soft.
B. Type L soft[]
C. Type K soft[]
D. DWV[][][][][][]
C. Type K soft.
Which is not an approved method for joining cast iron waste pipe?
A. Compression joint.
B. Welded joint[][][][][]]
C. Mechanical joint[][]
D. Caulked joint[][][][]]
B. Welded joint.
Dielectric unions are used to:
A. Ground metallic pipe.
B. Connect plastic to copper pipe.
C. To prevent shocks[][][][][][][][][][][][]]
D. Prevent corrosion[][][][][][][][][][][][]]
D. Prevent corrosion.
When installing glass piping, if one end needs to be field cut the ends should be joined?
A. Plane to plane.
B. Bead to bead[]
C. Bead to plane[]
D. Bead to hub[][]]
C. Bead to plane.
Bell and spigot cast iron is installed with the:
A. Bell upstream.
B. Spigot upstream.
C. Bell downstream.
D. Doesn’t matter[][]
A. Bell upstream.
What force would be exerted on the gate of a closed 6” gate valve if the water pressure acting on it measured 46 psig?
A. 867 pounds.
B. 1300 pounds.
C. 2604 pounds.
D. 5202 pounds.
B. 1300 pounds.
Asbestos cement pipe installed below a 60mm thick concrete floor must be at least how deep?
A. 150 mm.
B. 300 mm.
C. 600 mm.
D. 1200 mm.
C. 600 mm.
What is the maximum practical suction lift of a shallow well jet pump?
A. 22’.
B. 25’.
C. 29’.
D. 33.9’.
B. 25’.
A backwater valve may be installed in a building drain provided that it is:
A. Properly vented.
B. Normally open[]]
C. 3” or larger[][][][]]
D. Trapped upstream.
B. Normally open.
This discharge from a sump pump shall have the following fittings installed in order; in the direction of flow:
A. Check valve, union, shut-off valve.
B. Shut-off, coupling, check valve[][][]
C. Check valve, shut-off valve, union
D. Union, check valve, shut-off valve.
D. Union, check valve, shut-off valve.
When a well pump turns on as soon as a faucet is used the most likely problem is:
A. Water logged pressure tank.
B. Defective pressure switch[][]
C. Foot valve not holding[][][][][]]
D. Pump impellar is worn out[][]
A. Water logged pressure tank.
A 4” cast iron pipe with 1” insulation is to pass through a wall. How large a diameter hole is required to be cut? Allow for a 1/4” air gap.
A. 5”.
B. 5.5”.
C. 6”[][]
D. 6.5”.
D. 6.5”.
A gear pump is a positive displacement pump and must be installed with a:
A. Pressure tank.
B. Pressure switch.
C. Pressure relief valve.
D. Pressure reducing valve.
C. Pressure relief valve.
What type of trap is not permitted in a drainage system?
A. S trap standard.
B. Bell trap[][][][][][][]
C. P trap[][][][][][][][][]
D. Drum trap[][][][][]
B. Bell trap.
Where is the jet located in a deep well?
A. At the pump.
B. Below the foot valve.
C. Above the foot valve.
D. Top of the well[][][][][][]
C. Above the foot valve.
How would you increase the length of a flush on a flushometer?
A. Turn regulating screw clockwise.
B. Turn regulating screw counter clockwise.
C. Remove vacuum breaker[][][][][][][][][][][][][][]]
D. Throttle the stop valve[][][][][][][][][][][][][][][][]]
B. Turn regulating screw counter clockwise.
Six equally spaced lav’s are to be installed along a wall that is 530 cm long and will be vented with dual vents. Determine the center to center distance between vents if the fixtures are each 51 cm wide.
A. 133 cm.
B. 166 cm.
C. 177 cm.
D. 188 cm.
B. 166 cm.
A drainage pipe suspended from a ceiling inside a building at its most upstream end is 7.5” from the ceiling to the center of the pipe. What will the measurement be from the ceiling to the center of the pipe if it travels 26 feet horizontally, has an 8 foot horizontal offset then continues another 37.
A. 17.75”.
B. 20.5”.
C. 23.25”.
D. 25.25”.
D. 25.25”.
What is the minimum length of trap arm?
A. No minimum.
B. 2 pipe diameters.
C. 12”[][][][][][][][][][][][][]]
D. 18”[][][][][][][][][][][][][]
B. 2 pipe diameters.
A branch with 34 fixture units discharges into a sewage sump. What is the minimum size vent required for the sump.
A. 1 1/2”.
B. 2”[][][]
C. 3”[][][]
D. 4”[][][]
C. 3”.
What is the maximum vertical fall of a water closet trap arm?
A. 1 m.
B. 1200 mm.
C. 2 m[][][][][]]
D. 3 m[][][][][]
A. 1 m.
A building’s roof measuring 90m by 50m would require how many flow controlled roof drains?
A. 6.
B. 8[]
C. 10.
D. 12.
A. 6.
A flat roof measures 20m by 26m with a horizontal wall on one side extended up 6m by 20m. Size the circular leader if the local 15 minute rainfall intensity is 24mm.
A. 4”.
B. 5”.
C. 6”.
D. 7”.
B. 5”.
A laboratory sink that receives bio-hazardous waste must be installed with a:
A. Backwater valve.
B. Check valve[][][][]]
C. Interceptor for organic waste.
D. Cleanout above the flood level rim.
D. Cleanout above the flood level rim.
The absorption rate of a septic field is determined by:
A. Soil analysis.
B. Percolation test.
C. Water table[][][][]]
D. Linear feet of leech field.
B. Percolation test.
Medical gas piping is most often joined by:
A. Lead free solder.
B. Flared joints[][][][]
C. Brazing[][][][][][][][]]
D. Compression joints.
C. Brazing.
A circuit vented branch with a horizontal offset that uses two 45° fittings will require:
A. Two relief vents.
B. Increase one pipe size.
C. Additional circuit vent[]]
D. Not permitted[][][][][][][][]]
C. Additional circuit vent.
Determine the amount of expansion that will occur when a 15m ABS pipe has a temperature change of 40°C.
A. 25mm.
B. 36mm.
C. 47mm.
D. 54mm.
D. 54mm.
Which backflow preventer is not a testable device?
A. PVB.
B. DCAP.
C. RP[][][]
D. DCVA.
B. DCAP.
Referring to the figure below, find the length of “D” if: A = 50mm, R = 150mm, C = 1400mm and E = 30mm.
A. 1087.2mm
B. 1117.2mm[]
C. 1176.8mm
D. 1232.6mm
A. 1087.2mm
Referring to the figure below, the image shows a 45° degree rolling offset. Find the length of pipe “C”.
A. 43.58”.
B. 44.58”.
C. 45.58”.
D. 46.58”.
D. 46.58”.
A properly cut thread on black iron pipe should allow how many hand turns with a fitting?
A. 1 1/2.
B. 2 1/2.
C. 3 1/2.
D. 4 1/2.
C. 3 1/2.
A well with a water tight casing requires a minimum distance from a septic system of:
A. 50m.
B. 20m.
C. 15m.
D. 30m.
D. 30m.
An air conditioner that discharges 0.065 l/s of condensate into a floor drain would equate to how many fixture units?
A. 1.
B. 2.
C. 8.
D. 45.
B. 2.
An interceptor may act as a trap for a fixture provided that:
A. It has a 38mm water seal.
B. It is located within 8” of the fixture.
C. Vent is increased one size[][][][][][][]]
D. All of the above[][][][][][][][][][][][][][][][][]
A. It has a 38mm water seal.
Underground piping installed in a dug trench should be convered with appropriate backfill to a height of:
A. 100mm.
B. 150mm.
C. 300mm.
D. 600mm.
C. 300mm.
Which is not a hot water heating piping system?
A. Two pipe reverse return.
B. Series loop[][][][][][][][][][][][]
C. Two pipe direct return[][]
D. One pipe gravity return.
D. One pipe gravity return.
The ideal location for a circulator pump installed in a hot water heating system is:
A. On the return close to the boiler.
B. On the supply after the zone valve.
C. On the supply before the expansion tank.
D. On the supply after the expansion tank[][]]
D. On the supply after the expansion tank.
A pipe that connects at its downstream end to two or more vent pipes and at its upper end to a vent stack or stack vent is a:
A. Vent header.
B. Circuit vent[]
C. Branch vent.
D. Common vent.
C. Branch vent.
Referring to the figure below, size the pipe below at the location indicated.
A. 3”.
B. 1 1/2”.
C. 4”[][]]
D. 2”[][]
A. 3”.
Referring to the figure below, what elevation is shown on the right hand image?
A. North.
B. East[]]
C. South.
D. West.
B. East.
When determining the location to install a condensing boiler what must be considered?
A. Homeowners preference.
B. Existing vent location[][][][]
C. Central to heating units[][]
D. Near a floor drain[][][][][][][]
D. Near a floor drain.
The discharge piping from a service water heater’s temperature and pressure relief valve must discharge within _____ of a floor drain or suitable area.
A. 150mm.
B. 300mm.
C. 600mm.
D. Not specified.
B. 300mm.
Length is not a consideration when sizing this vent:
A. Relief vent.
B. Stack vent.
C. Vent header.
D. Circuit vent[]
A. Relief vent.
Referring to the figure below, if viewing the rod what elevation would you record?
A. 14.12’
B. 14.22’
C. 14.22cm.
D. 1.422m[]
D. 1.422m.
A cross fitting may not be used in a DWV system except to connect:
A. Back to back fixtures.
B. Branches that recieve clear water waste.
C. Four vents[][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
D. Fixture drains of three compartment sinks.
C. Four vents.
A 1/2” extracted tee may be formed from:
A. 3/4” Type M copper.
B. 1/2” Type K copper[]
C. 1/2” Type L copper[]
D. 3/4” Type K copper.
D. 3/4” Type K copper.
If four shower heads are installed along a wall what would the minimum measurement be between the two outermost showers?
A. 750mm.
B. 2.25m[]]
C. 1200mm.
D. 1.8m[][][][]
B. 2.25m.
The minimum size for vents serving an oil interceptor are:
A. 1 1/4”.
B. 1 1/2”.
C. 2”[][][]
D. 3”[][][]
A. 1 1/4”.
A four wire zone valve is wired to:
A. Thermostat, transformer, hi limit, motor.
B. Transformer, hi limit, motor, circulator[][]
C. Thermostat, transformer, end switches[]
D. Thermostat, end switches[][][][][][][][][][][][]]
C. Thermostat, transformer, end switches.
Which of the following fixtures may not be indirectly connected to a drainage system?
A. Commercial dishwasher.
B. Sterilizer[][][][][][][][][][][][][][]]
C. Drinking fountain[][][][][][][]
D. Water softener backwash.
A. Commercial dishwasher.
The minimum size for mobile home connections are:
A. 3” sewer, 1/2” water.
B. 3” sewer, 3/4” water.
C. 4” sewer, 1” water[][]]
D. 4” sewer, 3/4” water.
D. 4” sewer, 3/4” water.
A pressure reducing valve must be installed if the water service pressure is above:
A. 50 psi (344 kPa).
B. 80 psi (550 kPa).
C. 65 psi (450 kPa).
D. 100 psi (690 kPa).
B. 80 psi (550 kPa).
A twin tank water softener will house the brine in one tank and the other tank will house the:
A. Zeolite.
B. Soda ash.
C. Green sand.
D. Activated carbon.
A. Zeolite.
Where should you locate a fin tube radiator with a room?
A. Where space permits.
B. Homeowners preferences.
C. Under a window[][][][][][][][][][]
D. Doesn’t matter[][][][][][][][][][][]
C. Under a window.
Water that has a dissolved mineral content of >181 mg/t would be deemed:
A. Soft.
B. Moderately hard.
C. Hard[][][][][][][][][][][]]
D. Very hard[][][][][][]]
D. Very hard.
A private water supplied cistern is fitted with a 3/4” makeup water pipe supplied by a municipal system. What size air gap would be required?
A. 3/4”.
B. 1”[][]]
C. 1 1/2”.
D. 2”[][]]
C. 1 1/2”.
Referring to the image below, if the center to center measurement of pipe “A” is 8’6” (2590mm) dimension “B” would be:
A. 101” (257 cm).
B. 12’ 1/4” (3662 mm).
C. 13’ 4 1/8” (4064mm).
D. 14’ 7” (4445mm)[][][]]
B. 12’ 1/4” (3662 mm).
The abbreviation NPS refers to:
A. Pipe size.
B. Wall thickness.
C. Threads per inch.
D. Thread taper[][][][]
A. Pipe size.
What is the maximum horizontal offset permitted in a 3” soil or waste stack that is serving as a wet vent?
A. 1.2 m.
B. 1.8 m.
C. 2.5 m.
D. 3.5 m.
C. 2.5 m.
Which manufacturing method produces the strongest pipe?
A. Butt weld.
B. Extruded.
C. Spiral well.
D. Lap weld[]
B. Extruded.
A toilet seat used in a public washroom must be:
A. Cover-less type.
B. Plastic non-permeable type.
C. Round type[][][][][][][][][][][][][][][]]
D. Elongate open front type[][][]
D. Elongate open front type.
A ground source heat pump is installed (geothermal). What do you need in the boiler room?
A. Gas boiler.
B. HWT[][][][][]
C. Buffer tank.
D. Water softener.
C. Buffer tank.
What is it called when you poor concrete in stages?
A. Lifts.
B. Portions.
C. Partitions.
D. Regions[]
A. Lifts.
What is required when you install a downfeed hydronic fintube?
A. Check valves to prevent the backflow of water.
B. Flow swith to prove flow[][][][][][][][][][][][][][][][][][][][][]]
C. Vents on high points and drains on low points[]
D. Spring isolators[][][][][][][][][][][][][][][][][][][][][][][][][][][][][]
C. Vents on high points and drains on low points.
If you had to remove a toilet and then put it down again after you have raised the floor what would you use?
A. Kant leak.
B. Double wax ring.
C. Flange extension kit.
D. Nothing required[][][]
C. Flange extension kit.
Before an employee enters a confined space, what conditions must the internal atmosphere shall be tested with a calibrated direct-reading instrument?
A. Oxygen content.
B. Flammable gases and vapours.
C. Potential toxic air contaminants.
D. All of the above[][][][][][][][][][][][][][]]
D. All of the above.
When installing glass piping, if one end needs to be field cut how should the ends be joined?
A. Bead to plane.
B. Bead to hub[][]
C. Plane to plane.
D. Bead to bead[]
A. Bead to plane.
A pipe that connects at its downstream end to two or more vent pipes and at its upper end to a vent stack or stack vent is a?
A. Branch vent.
B. Common vent.
C. Vent header[][]
D. Circuit vent[][][]
A. Branch vent.
A twin tank water softener will house the brine in one tank and the other tank will house the:
A. Green sand.
B. Activated carbon.
C. Zeolite[][][][][][][][][][]
D. Soda ash[][][][][][][]]
C. Zeolite.
A gear pump is a positive displacement pump and must be installed with which of the following?
A. Pressure switch.
B. Pressure relief valve.
C. Pressure reducing valve.
D. Pressure tank[][][][][][][][][][]
B. Pressure relief valve.
Valves used on domestic hot water supply tanks and heaters include:
A. Gate valve, check valve and safety valve.
B. Globe valve, plug valve and pressure relief valve.
C. Pressure, temperature and vacuum relief valve[][]]
D. Swing check, butterfly, termperature relief[][][][][][]]
C. Pressure, temperature and vacuum relief valve.
