Arizona plumbing exam C-37 (set 3) Questions and Answers Graded A+
Vertical cast iron drain pipes must be supported at each floor not to
exceed ____ feet. - Answers 15
A seepage pit shall be over-excavated into native soil a minimum of: - Answers 5 feet
A schedule 40 metallic pipe gas supply line supplies natural gas to a
100,000 BTU furnace, a 50,000 BTU water heater, a 60,000 BTU range
and a 80,000 BTU fireplace. The most remote appliance is 72 feet from
point of delivery. Assume the gas has a specific gravity of .60, BTU per
CF is 1000 BTU per hr., inlet pressure is 6-8 inches w/c and pressure
drop is .5 inch w/c. What is the required diameter of the supply pipe that is connected to the meter? -
Answers 1 1/4 inch
You are getting ready to turn on a 12 inch water main, this has to be done in 12 hours. What is the
amount of chlorine needed for this? - Answers 200 ppm
When abandoning a septic tank, who should be notified? - Answers The department of environmental
quality
Drinking fountains shall not be required for occupant load of ____ or fewer. - Answers 15
In a vertical piping system which of the following serves as a vent and a drain? - Answers Wet Vent
Which of the following tests are required when a potable water storage tank is placed in service? -
Answers All of the above
What size of hose thread is commonly used for a Siamese hose connection? - Answers 2 1/2 inch
What is the minimum distance a gas line must be from the edge of a wood stud if the pipe is not cast
iron or schedule 40 metallic pipe? - Answers 1 1/2 inch
Underground utilities are assigned color codes for identification. what color identifies reclaimed water? -
Answers purple
given: a low hazard boiler system does not require chemical addictives, but has the potential to cause
back pressure. what minimum backflow protection is required for the water make up supply? - Answers
Double check valve with intermediate vent
Blue state uses green to mark which of the following? - Answers sewers, drains
Vertical gas piping, 2 inches in diameter shall be supported at what
, maximum intervals? - Answers At every floor
What is the maximum height that a drain line from a water heater pan can terminate above ground
level? - Answers 24 inches
Shutoff valves are required to be installed at which of the following locations for multiple hot water
boiler installations? - Answers In the water supply and return for each boiler
Condensate from all cooling coils and evaporators shall be conveyed from the drain pan outlet to all of
the following except? - Answers a street or alley
What is the minimum number of spare fire sprinkler heads required to be keep in the building where
there are 313 sprinkler heads installed? - Answers 12
Which of the following backflow prevention device is protects against back pressure? - Answers Double
check-valve assembly
What is the minimum slope of a roof drain gutter? - Answers 1/16 inch
What is the minimum earth cover required for a gas line buried outside a residence? - Answers 12 inches
Hydronic piping passing through concrete from floor to floor, the holes should be _____. - Answers
Sleeved
The code defines the point at which a water softener backwash drain discharges above the flood level
rim of a floor drain as? - Answers Air gap
What minimum feet of head is required to test a rough drainage and
venting system? - Answers 10 feet
According to code, the size of any pump or discharge pipe from a sump (ejector) having a water closet
connected there to shall not be less than? - Answers 2 inches
What is the minimum distance from the front edge of a recessed fireplace to a standard temperature
fire sprinkler? - Answers 60 inches
Can gas piping be installed in solid floors that is exposed to excessive moisture? - Answers yes when
protected in an approved manner
What is the purpose of an expansion tank? - Answers it allows for expanded water volume after heating
What is the maximum distance that a fixture requiring hot water may be from the source? - Answers 50
feet
When using the longest length method for sizing, how do you determine the length of pipe? - Answers
Point of delivery to most remote outlet
Vertical cast iron drain pipes must be supported at each floor not to
exceed ____ feet. - Answers 15
A seepage pit shall be over-excavated into native soil a minimum of: - Answers 5 feet
A schedule 40 metallic pipe gas supply line supplies natural gas to a
100,000 BTU furnace, a 50,000 BTU water heater, a 60,000 BTU range
and a 80,000 BTU fireplace. The most remote appliance is 72 feet from
point of delivery. Assume the gas has a specific gravity of .60, BTU per
CF is 1000 BTU per hr., inlet pressure is 6-8 inches w/c and pressure
drop is .5 inch w/c. What is the required diameter of the supply pipe that is connected to the meter? -
Answers 1 1/4 inch
You are getting ready to turn on a 12 inch water main, this has to be done in 12 hours. What is the
amount of chlorine needed for this? - Answers 200 ppm
When abandoning a septic tank, who should be notified? - Answers The department of environmental
quality
Drinking fountains shall not be required for occupant load of ____ or fewer. - Answers 15
In a vertical piping system which of the following serves as a vent and a drain? - Answers Wet Vent
Which of the following tests are required when a potable water storage tank is placed in service? -
Answers All of the above
What size of hose thread is commonly used for a Siamese hose connection? - Answers 2 1/2 inch
What is the minimum distance a gas line must be from the edge of a wood stud if the pipe is not cast
iron or schedule 40 metallic pipe? - Answers 1 1/2 inch
Underground utilities are assigned color codes for identification. what color identifies reclaimed water? -
Answers purple
given: a low hazard boiler system does not require chemical addictives, but has the potential to cause
back pressure. what minimum backflow protection is required for the water make up supply? - Answers
Double check valve with intermediate vent
Blue state uses green to mark which of the following? - Answers sewers, drains
Vertical gas piping, 2 inches in diameter shall be supported at what
, maximum intervals? - Answers At every floor
What is the maximum height that a drain line from a water heater pan can terminate above ground
level? - Answers 24 inches
Shutoff valves are required to be installed at which of the following locations for multiple hot water
boiler installations? - Answers In the water supply and return for each boiler
Condensate from all cooling coils and evaporators shall be conveyed from the drain pan outlet to all of
the following except? - Answers a street or alley
What is the minimum number of spare fire sprinkler heads required to be keep in the building where
there are 313 sprinkler heads installed? - Answers 12
Which of the following backflow prevention device is protects against back pressure? - Answers Double
check-valve assembly
What is the minimum slope of a roof drain gutter? - Answers 1/16 inch
What is the minimum earth cover required for a gas line buried outside a residence? - Answers 12 inches
Hydronic piping passing through concrete from floor to floor, the holes should be _____. - Answers
Sleeved
The code defines the point at which a water softener backwash drain discharges above the flood level
rim of a floor drain as? - Answers Air gap
What minimum feet of head is required to test a rough drainage and
venting system? - Answers 10 feet
According to code, the size of any pump or discharge pipe from a sump (ejector) having a water closet
connected there to shall not be less than? - Answers 2 inches
What is the minimum distance from the front edge of a recessed fireplace to a standard temperature
fire sprinkler? - Answers 60 inches
Can gas piping be installed in solid floors that is exposed to excessive moisture? - Answers yes when
protected in an approved manner
What is the purpose of an expansion tank? - Answers it allows for expanded water volume after heating
What is the maximum distance that a fixture requiring hot water may be from the source? - Answers 50
feet
When using the longest length method for sizing, how do you determine the length of pipe? - Answers
Point of delivery to most remote outlet
