RI JOURNEYMAN REFRIGERATION LICENSE
EXAM COMPREHENSIVE QUESTIONS AND
ANSWERS GRADED A+
◉ What is a secondary roof drain called?
Answer: Scupper
◉ Can you connect a primary and secondary roof drain together?
Answer: No
◉ How many roof drains are needed on a roof 10,000 sq/ft or less?
Answer: Minimum of 2
◉ How many roof drains are needed on a roof 10,000 sq/ft or more?
Answer: Minimum of 4
◉ What is a roof drain that directs rain water inside a building?
Answer: Conductor
◉ What is the pipe that carries roof rain water outside?
Answer: Leader
,◉ Which of the two types of drains requires insulation?
Answer: Conductor
◉ When sizing roof drains & storm drains, how much rainfall per
hour is used to make the calculation?
Answer: 2.6 inches per hour
◉ When calculating roof drains, how much of the vertical parapet
wall do you add?
Answer: 50%
◉ How much fill do you put between compacting?
Answer: 6 inches
◉ How high do you fill/compact before dumping fill into a trench?
Answer: 12 inches above crown of pipe
◉ How do you support underground piping?
Answer: Continuously
◉ At what depth do you need a trench safety device?
, Answer: 5 feet
◉ How much water does a urinal use per flush?
Answer: 1 gallon
◉ How much water does a toilet use per flush?
Answer: 1.6 gallons
◉ What is the minimum size for a shower strainer cover?
Answer: 3 inch
◉ What is the boiling point of water?
Answer: 212 degrees Fahrenheit
◉ What is atmospheric pressure?
Answer: 14.7 psi
◉ What is Pi?
Answer: 3.14
◉ What is an aspirator?
Answer: A suction device
EXAM COMPREHENSIVE QUESTIONS AND
ANSWERS GRADED A+
◉ What is a secondary roof drain called?
Answer: Scupper
◉ Can you connect a primary and secondary roof drain together?
Answer: No
◉ How many roof drains are needed on a roof 10,000 sq/ft or less?
Answer: Minimum of 2
◉ How many roof drains are needed on a roof 10,000 sq/ft or more?
Answer: Minimum of 4
◉ What is a roof drain that directs rain water inside a building?
Answer: Conductor
◉ What is the pipe that carries roof rain water outside?
Answer: Leader
,◉ Which of the two types of drains requires insulation?
Answer: Conductor
◉ When sizing roof drains & storm drains, how much rainfall per
hour is used to make the calculation?
Answer: 2.6 inches per hour
◉ When calculating roof drains, how much of the vertical parapet
wall do you add?
Answer: 50%
◉ How much fill do you put between compacting?
Answer: 6 inches
◉ How high do you fill/compact before dumping fill into a trench?
Answer: 12 inches above crown of pipe
◉ How do you support underground piping?
Answer: Continuously
◉ At what depth do you need a trench safety device?
, Answer: 5 feet
◉ How much water does a urinal use per flush?
Answer: 1 gallon
◉ How much water does a toilet use per flush?
Answer: 1.6 gallons
◉ What is the minimum size for a shower strainer cover?
Answer: 3 inch
◉ What is the boiling point of water?
Answer: 212 degrees Fahrenheit
◉ What is atmospheric pressure?
Answer: 14.7 psi
◉ What is Pi?
Answer: 3.14
◉ What is an aspirator?
Answer: A suction device
