1|Page
AZ C-37 (CR-37) PLUMBING CONTRACTOR
EXAMINATION COMPLETE VERIFIED QUESTIONS
AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
What minimum pressure is required to test a drainage
system with air? - Answer-5 psi
What maximum fixture unit load is allowed on 2 inch trap?
- Answer-3 fu
Refer to the illustration. Given: This one inch pipe offset
uses 45 degree
elbows and an offset distance of 8 inches at "B". What is
the center to
center length of the diagonal "A"? - Answer-11-5/16 inches
Which of the following is NOT required to calculate water
pipe sizes? - Answer-Maximum street pressure
Which of the following backflow prevention devices
protects against
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back pressure? - Answer-Double check-valve assembly
What is the name of the device in a hot water heating
system that allows
trapped air to escape from the system? - Answer-air vent
Given: A low hazard boiler system does not require
chemical additives,
but has the potential to cause back pressure. What
minimum back flow
protection is required for the water make up supply? -
Answer-double check valve with intermediate vent
What is required for materials that are used in medical gas
pipin
systems? - Answer-delivered to job site cleaned and
capped
What is the purpose of an expansion tank? - Answer-it
allows for expanded water volume after heating
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What minimum separation is required between a
residential septic tank
disposal field and a domestic service water line? - Answer-
5 feet
Given: A water service pipe is to be installed in a trench
with a sewer
pipe. What minimum vertical distance is required between
the bottom
the water service pipe and the top of the sewer pipe? -
Answer-12 inches
What is the name for the exterior drainage pipe that
carries storm water
from roof drain systems? - Answer-leader
What maximum percent of lead content is permitted in
solder used for a
copper water pipe system? Please check Math Help. -
Answer-0.002 (.2%)
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Which of the following testing mediums shall not be used
to pressure
test a fuel gas piping system? - Answer-oxygen
Which of the following affects the size of vent piping? -
Answer-total developed length of vent
What is the maximum drainage fixture unit capacity of a 4
inch drai
pipe with 1/4 inch per foot slope? - Answer-216 DFU
According to OSHA ladders steps are required in all
trenches ditches at feet or more in depth for an adequate
means of exit - Answer-4
Question 527 According to OSHA employees shall be
protected from cave ins by an adequate protective
systems in excavations that equal or exceed a depth of -
Answer-5 feet
Question ID 560 What minimum height should a gas water
heaters pilot light be above the garage floor ? - Answer-18
inches
AZ C-37 (CR-37) PLUMBING CONTRACTOR
EXAMINATION COMPLETE VERIFIED QUESTIONS
AND DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
What minimum pressure is required to test a drainage
system with air? - Answer-5 psi
What maximum fixture unit load is allowed on 2 inch trap?
- Answer-3 fu
Refer to the illustration. Given: This one inch pipe offset
uses 45 degree
elbows and an offset distance of 8 inches at "B". What is
the center to
center length of the diagonal "A"? - Answer-11-5/16 inches
Which of the following is NOT required to calculate water
pipe sizes? - Answer-Maximum street pressure
Which of the following backflow prevention devices
protects against
,2|Page
back pressure? - Answer-Double check-valve assembly
What is the name of the device in a hot water heating
system that allows
trapped air to escape from the system? - Answer-air vent
Given: A low hazard boiler system does not require
chemical additives,
but has the potential to cause back pressure. What
minimum back flow
protection is required for the water make up supply? -
Answer-double check valve with intermediate vent
What is required for materials that are used in medical gas
pipin
systems? - Answer-delivered to job site cleaned and
capped
What is the purpose of an expansion tank? - Answer-it
allows for expanded water volume after heating
,3|Page
What minimum separation is required between a
residential septic tank
disposal field and a domestic service water line? - Answer-
5 feet
Given: A water service pipe is to be installed in a trench
with a sewer
pipe. What minimum vertical distance is required between
the bottom
the water service pipe and the top of the sewer pipe? -
Answer-12 inches
What is the name for the exterior drainage pipe that
carries storm water
from roof drain systems? - Answer-leader
What maximum percent of lead content is permitted in
solder used for a
copper water pipe system? Please check Math Help. -
Answer-0.002 (.2%)
, 4|Page
Which of the following testing mediums shall not be used
to pressure
test a fuel gas piping system? - Answer-oxygen
Which of the following affects the size of vent piping? -
Answer-total developed length of vent
What is the maximum drainage fixture unit capacity of a 4
inch drai
pipe with 1/4 inch per foot slope? - Answer-216 DFU
According to OSHA ladders steps are required in all
trenches ditches at feet or more in depth for an adequate
means of exit - Answer-4
Question 527 According to OSHA employees shall be
protected from cave ins by an adequate protective
systems in excavations that equal or exceed a depth of -
Answer-5 feet
Question ID 560 What minimum height should a gas water
heaters pilot light be above the garage floor ? - Answer-18
inches
