Plumbing Exam
Questions and Complete
Solutions Graded A+
When Plumbing code conflicts with mechanical code, which shall prevail? - Answer: Plumbing code
It is the duty of whom to notify the AHJ of work ready for inspection? - Answer: The person doing the
work
What is AHJ? - Answer: Authority Having Jurisdiction
How much notice must you give the AHJ prior to inspection? - Answer: 24 Hours
hot water for public use lavatories shall be limited to what temp:
A) 105
B) 120
C)115
D)110 - Answer: 120 F
Is the plumbing code minimum or maximum standards? - Answer: Minimum requirements and
standards
What is considered a bathroom? - Answer: A room with a shower or bathtub
,that part of the lowest horizontal piping of a drainage system which receives the discharge from soil,
waste and other drainage pipes inside the walls of the building and conveys it to the building sewer
A) Building subdrain
B)soil stack
C)Building Sewer
D)Building drain - Answer: Building drain
A vertical vent that is a continuation of the drain to which it connects
A) Continuous vent
B) Yoke Vent
C) Up Vent
D) Standard Vent - Answer: Continuous vent
a specially designed system of waste piping embodying the horizontal wet venting of one or more sinks
or floor drains by means of a common waste and vent pipe adequately sized to provide free movement
of air above the flow line of the drain
A) Combination Waste and Vent system
B) Drain air system
C) Oversized drain
D) Flat Drain - Answer: Combination Waste and vent system
Where parallel vertical stacks are installed, the connection for the soil stacks shall be via:
A) Backflow tee
B) Typical Wye
C) Drain Tee
D) Yoke Vent - Answer: Yoke vent
You are looking at a 16 foot long cylinder that is 4 feet wide. If it is entirely full, how much water is in the
cylinder?
A) 200.96
, B)256
C) 300 - Answer: 200.96
Volume is (Pie X R^2)xHeight
(3.14x2^2) X 16 =200.96
The Volume of the cylinder is 200.96 cubic feet, many gallons of water is that?
A) 1503
B) 1600
C) 1000
D) 1263.72 - Answer: 7.48 gallons per cubic foot
(200.96 X 7.48) = 1503.2 gallons
Developed Length - Answer: The length along the center of the pipe and fitting
Vertical pipe - Answer: any pipe or fitting installed in a vertical position or which forms an angle of not
more than 45 degrees with the vertical line
potable water - Answer: water that is safe to drink, use in culinary and domestic purposes
a stack is - Answer: a vertical pipe
branch - Answer: Horizontal pipe
parts of a trap - Answer:
Yoke vent - Answer: A pipe connecting upward from a soil or waste stack to a vent stack for the purpose
of preventing pressure changes in the stack
PEX Pipe - Answer: Polyethylene cross link