JOURNEYMAN PLUMBING
QUESTIONS AND ANSWERS
What are the three ways water is present? ✅✅correct answ-Solid - Ice
Liquid - Water
Gas - Steam
Pressure formula? ✅✅correct answ-Pressure= Head x .434
Head Formula? ✅✅correct answ-Head = Pressure x 2.3
Calculate the travel of 45 degree offset with a rise of 8" and a spread of 20" ✅✅correct answ-
Travel = 21.54 x 1.414 = 30.45
Answer = 30 1/2"
Pressure is 60 psi, you must run a water service to a house built on a 30 foot rise. What is going to be
the pressure at the house? ✅✅correct answ-Pressure = Head x .434
30 x .434 = 13.02 loss ( Uphill )
60 - 13 = 47
Answer = 47 psi
Travel ✅✅correct answ-The Distance from the initial offset to the second fitting
Advance ✅✅correct answ-Distance parallel to the pipes between the offset fittings
Offset ✅✅correct answ-Distance the pipe is offset from original position to new position
Rolling offsets formula ✅✅correct answ-Travel = Rise x 2 = Spread x 2
Volume of a pipe formula? ✅✅correct answ-.0408 x D^2 x L
,Calculate the volume of a tank ( pipe ) 20 feet in height, with a diameter of 48" ✅✅correct answ-
Answer = 434,294,78 cu inches
* when we have cubic inches, must multiply volume by 231
(1880.06 gallons x 231)
Calculate 1 1/2" pipe with an advance of 48" ✅✅correct answ-Answer = 64 7/8 "
Travel = 1.414 x advance
1.414 x 48 = 67 7/8 "
Minus 3 ( 1 1/2 for both fittings )
= 64 7/8"
Payment formula? ✅✅correct answ-Payment = Base x Rate
Rate formula? ✅✅correct answ-Rate = Payment divided by Base
You estimated a job at $2195, you need $900 upfront, what is the percent you collect upfront?
✅✅correct answ-Answer = 41%
Rate = 900 divided by 2195 = 41%
When calculating offsets, what must be given? ✅✅correct answ-Offset(Base) and
Advance(altitude)
When can you use PVC schedule 40 water pipe? ✅✅correct answ-Cold Water distribution systems
When can you use CPVC water pipe and fittings? ✅✅correct answ-Cold + Hot water distribution
water systems
What is the blue print symbol for cold water? ✅✅correct answ-Long line - long line - Long line -
Blue print symbol for hot water return line? ✅✅correct answ-Long line short line short line long
line
,Potable Water, Sanitary Drainage, Fuel Gas piping, Storm Water. Which one is not included in
Plumbing Systems in buildings? ✅✅correct answ-Fuel Gas Piping
What is Galvanic action? ✅✅correct answ-Electrolytic chemical reaction between dissimilar
metals such as copper and iron
What is the most common scales used in building drawings ✅✅correct answ-1/8" = 1' and 1/4" =
1'
Wall hung water closet bowls shall be? ✅✅correct answ-Rigidly supported by concealed metal
supports
On a gas water heater, what is a thermocouple? ✅✅correct answ-Small electric generator
Difference between a sink and a lavatory? ✅✅correct answ-Sinks = functional units Lavatory =
Washing fixture
How are drainage and venting in buildings larger than 5 buildings larger than 5 stories high tested?
✅✅correct answ-You test each 5 story section with a 10 ft head of water
What prevents a chemical sink from being damaged? ✅✅correct answ-Continually running water
and being manufactured out of chemical resistance materials
What is the purpose of a dip tube on a water heater? ✅✅correct answ-Transfers water from inlet
to bottom of tank and helps prevent backsiphonage by having small hole at the top of the dip tube
Air test on water supply lines? ✅✅correct answ-1 1/2 times the working pressure or 150 psi,
which ever is larger
What is the type of heating element used in electric water heaters? ✅✅correct answ-Resistance
heating elements
Primary purpose of vent line in a water closet is? ✅✅correct answ-Prevent loss from trap seal
, What are the 2 primary water sources for public potable drinking water? ✅✅correct answ-
Surface and ground water
What is a cross connection? ✅✅correct answ-When 2 separate piping systems one potable and
one undesirable flow into each other
Example: Garden hose attached to a silcock with the other end lying in a cesspool
What is the hydrologic cycle? ✅✅correct answ-A continuous exchange of water among
atmosphere, the earth, and water bodies
What device can be used to add a small amount of water to a floor drain trap to ensure an adequate
trap seal? ✅✅correct answ-Trap Primer
What temperature is necessary for brazing and then adding the filler? ✅✅correct answ-840
degrees Fahrenheit
Three dimensional drawing of a plumbing system is called? ✅✅correct answ-Isometric
Most common individual vent is called? ✅✅correct answ-A continuous vent
A vertical pipe installed to provide circulation of air to and from the drainage system is called?
✅✅correct answ-A Vent Stack
Drain fixture unit rating for a kitchen sink? ✅✅correct answ-2 DFU
Drain Fixture Unit
The fitting that mounts under the drain plug on a bathtub waste and overflow is called?
✅✅correct answ-Waste Shoe
What is the maximum volume of water to flush a water closet? ✅✅correct answ-1.6 gallons
Energy Policy Act of 1992
QUESTIONS AND ANSWERS
What are the three ways water is present? ✅✅correct answ-Solid - Ice
Liquid - Water
Gas - Steam
Pressure formula? ✅✅correct answ-Pressure= Head x .434
Head Formula? ✅✅correct answ-Head = Pressure x 2.3
Calculate the travel of 45 degree offset with a rise of 8" and a spread of 20" ✅✅correct answ-
Travel = 21.54 x 1.414 = 30.45
Answer = 30 1/2"
Pressure is 60 psi, you must run a water service to a house built on a 30 foot rise. What is going to be
the pressure at the house? ✅✅correct answ-Pressure = Head x .434
30 x .434 = 13.02 loss ( Uphill )
60 - 13 = 47
Answer = 47 psi
Travel ✅✅correct answ-The Distance from the initial offset to the second fitting
Advance ✅✅correct answ-Distance parallel to the pipes between the offset fittings
Offset ✅✅correct answ-Distance the pipe is offset from original position to new position
Rolling offsets formula ✅✅correct answ-Travel = Rise x 2 = Spread x 2
Volume of a pipe formula? ✅✅correct answ-.0408 x D^2 x L
,Calculate the volume of a tank ( pipe ) 20 feet in height, with a diameter of 48" ✅✅correct answ-
Answer = 434,294,78 cu inches
* when we have cubic inches, must multiply volume by 231
(1880.06 gallons x 231)
Calculate 1 1/2" pipe with an advance of 48" ✅✅correct answ-Answer = 64 7/8 "
Travel = 1.414 x advance
1.414 x 48 = 67 7/8 "
Minus 3 ( 1 1/2 for both fittings )
= 64 7/8"
Payment formula? ✅✅correct answ-Payment = Base x Rate
Rate formula? ✅✅correct answ-Rate = Payment divided by Base
You estimated a job at $2195, you need $900 upfront, what is the percent you collect upfront?
✅✅correct answ-Answer = 41%
Rate = 900 divided by 2195 = 41%
When calculating offsets, what must be given? ✅✅correct answ-Offset(Base) and
Advance(altitude)
When can you use PVC schedule 40 water pipe? ✅✅correct answ-Cold Water distribution systems
When can you use CPVC water pipe and fittings? ✅✅correct answ-Cold + Hot water distribution
water systems
What is the blue print symbol for cold water? ✅✅correct answ-Long line - long line - Long line -
Blue print symbol for hot water return line? ✅✅correct answ-Long line short line short line long
line
,Potable Water, Sanitary Drainage, Fuel Gas piping, Storm Water. Which one is not included in
Plumbing Systems in buildings? ✅✅correct answ-Fuel Gas Piping
What is Galvanic action? ✅✅correct answ-Electrolytic chemical reaction between dissimilar
metals such as copper and iron
What is the most common scales used in building drawings ✅✅correct answ-1/8" = 1' and 1/4" =
1'
Wall hung water closet bowls shall be? ✅✅correct answ-Rigidly supported by concealed metal
supports
On a gas water heater, what is a thermocouple? ✅✅correct answ-Small electric generator
Difference between a sink and a lavatory? ✅✅correct answ-Sinks = functional units Lavatory =
Washing fixture
How are drainage and venting in buildings larger than 5 buildings larger than 5 stories high tested?
✅✅correct answ-You test each 5 story section with a 10 ft head of water
What prevents a chemical sink from being damaged? ✅✅correct answ-Continually running water
and being manufactured out of chemical resistance materials
What is the purpose of a dip tube on a water heater? ✅✅correct answ-Transfers water from inlet
to bottom of tank and helps prevent backsiphonage by having small hole at the top of the dip tube
Air test on water supply lines? ✅✅correct answ-1 1/2 times the working pressure or 150 psi,
which ever is larger
What is the type of heating element used in electric water heaters? ✅✅correct answ-Resistance
heating elements
Primary purpose of vent line in a water closet is? ✅✅correct answ-Prevent loss from trap seal
, What are the 2 primary water sources for public potable drinking water? ✅✅correct answ-
Surface and ground water
What is a cross connection? ✅✅correct answ-When 2 separate piping systems one potable and
one undesirable flow into each other
Example: Garden hose attached to a silcock with the other end lying in a cesspool
What is the hydrologic cycle? ✅✅correct answ-A continuous exchange of water among
atmosphere, the earth, and water bodies
What device can be used to add a small amount of water to a floor drain trap to ensure an adequate
trap seal? ✅✅correct answ-Trap Primer
What temperature is necessary for brazing and then adding the filler? ✅✅correct answ-840
degrees Fahrenheit
Three dimensional drawing of a plumbing system is called? ✅✅correct answ-Isometric
Most common individual vent is called? ✅✅correct answ-A continuous vent
A vertical pipe installed to provide circulation of air to and from the drainage system is called?
✅✅correct answ-A Vent Stack
Drain fixture unit rating for a kitchen sink? ✅✅correct answ-2 DFU
Drain Fixture Unit
The fitting that mounts under the drain plug on a bathtub waste and overflow is called?
✅✅correct answ-Waste Shoe
What is the maximum volume of water to flush a water closet? ✅✅correct answ-1.6 gallons
Energy Policy Act of 1992
