Exam Review Questions and 100%
Verified Answers |2026/ 2027 Updated
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A vent which extrudes out the side of a building should be at least _______ and ______ away
from doors and windows. - CORRECT ANSWER -10' and 2'
In RI hot water is _________ degrees. - CORRECT ANSWER -110 Degrees
There should be a clearance of _________ inches in front of a water closet. - CORRECT ANSWER
-21"
A vent size should be determined by its ________________? - CORRECT ANSWER -Length
A vent from a bed-pan washer is __________ from being connected to a local vent. - CORRECT
ANSWER -Prohibited
A backwater valve can be buried? - CORRECT ANSWER -False
,A water hammer arrestor should be used when? - CORRECT ANSWER -In the vicinity of quick-
closing valves
The slip joints on a tub waste should be _____________ during a test. - CORRECT ANSWER -
Accessible
Copper tubing 1 1/4" in diameter and above should be supported every ______ feet. - CORRECT
ANSWER -5 Feet
A vent, which connects several individual vents to a vent stack is called a _________________. -
CORRECT ANSWER -A branch vent
At what pressure does RI require a PRV? - CORRECT ANSWER -80 psi
It is required by the general contractor to have a clean restroom facilities on the job? - CORRECT
ANSWER -True
What are the requirements for an air test on a drainage system? - CORRECT ANSWER -Must hold
5 psi for 5 minutes
How many gallons does a urinal use during a flush cycle? - CORRECT ANSWER -1 gallon
, A commercial food waste grinder should be trapped ___________________. - CORRECT
ANSWER -Individually
A commercial food waste grinder should have a minimum outlet of _____________. - CORRECT
ANSWER -2"
What is required to be utilized in the waste of a clothes washer waste? - CORRECT ANSWER -Air
Break
Unobstructed vertical distance through the free atmosphere between the outlet of the waste
pipe and the flood level rim of the receptacle into which the waste pipe is discharging. -
CORRECT ANSWER -Air Gap
Bored, Dug and Driven are examples of what? - CORRECT ANSWER -Well
The vertical distance from the fixture outlet to the trap weir shall not exceed
________________ and the horizontal distance shall not exceed _______________ measured
from the centerline of the fixture outlet to the centerline of the inlet of the trap. - CORRECT
ANSWER -24" and 30"