Journeyman's Exam 2023 with complete solution
1/4"
Threads of drainage fittings shall be tapped as to allow _____ pitch per foot
4 lbs
Lead used for safe pans shall not be less than ________ per square foot
Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV
Name 3 allowable materials for...
journeymans exam 2023 with complete solution 14 threads of drainage fittings shall be tapped as to allow pitch per foot 4 lbs lead used for safe pans shall not be less than pe
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Journeyman's Exam 2023 with complete solution
1/4"
Threads of drainage fittings shall be tapped as to allow _____ pitch per foot
4 lbs
Lead used for safe pans shall not be less than ________ per square foot
Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV
Name 3 allowable materials for the DWV system "underground"
1-1/4" - 1 dfu's
1-1/2" - 3 dfu's
2" - 4 dfu's
3" 6 dfu's
4" - dfu's
What are the fixture unit values for the following traps
Double fixture fitting
What type of fitting is used for continuous waste and venting of lavatories back to back?
1"
Caulk joints for cast iron bell and spigot shall be filled with molten lead to a depth of not
less than ________?
Wye, Combination Wye w/ 1/8 bend, Long sweep
What type of fitting or fittings can be used to connect horizontal drainage to another
horizontal drainage line?
- Each horizontal drainage pipe shall be provided with a cleat at its upper terminal
- Horizontal run more than 100'
- Each horizontal change of direction exceeding 135°
- Front Main Cleanout
Cleanout locations required by code
100'
Maximum distance a cleanup can be spaced apart
12"
18"
Minimum clearance in front of a cleanup for 2" or less
Minimum clearance in front of a cleanup for 2" or more
20'
Underfloor cleanup shall not be located more than _____ from an access door, trap
door, or crawl hole
Back Water Valve
When plumbing fixtures are installed on a floor level lower than the next upstream
manhole cover of the sewer, such drainage piping shall be protected from backflow of
sewage by a ____________
20
Sewage ejectors receiving the discharge of water closets or ruinals shall have a
discharge capacity not less than ___ gallons per minute
2"
What is the minimum size discharge pipe for an ejector installed in a single dwelling?
2"
,The lowest inlet connected to the ejector pump shall have a clearance of not less than
____ from the high water or starting level of the sump.
Yes, with prior approval of the AHJ
Can macerating toilet systems be installed instead of a sewage pump system
3/4"
What is the minimum size discharge pipe for a macerating toilet system
1/4" per foot
What is the minimum pitch required fora 2" horizontal drain?
Swing check valve
The discharge line from an ejector pump shall be provided with an accessible
___________ and gate or ball valve.
Downstream of the backwater valve
Where shall the gate valve be located on the discharge line on an ejector pump
8'
Drainage connections shall not be made into a drainage piping system within ________
of an vertical or horizontal change in direction of a stack containing suds producing
fixtures.
10' Head of water for 15 minutes
5 psi for and air test
What are the requirements when testing the DWV system Water and Air?
When the dwelling is more than 200' away from the sewer.
When is the public sewer considered not being available?
2' away from the building
At what point does the building sewer begin?
DFU's
How is the size of the building sewer determined?
300'
What is the maximum distance allowed between approved manholes?
12"
When a water pipe and sewer pipe are placed in a common trench what is the minimum
distance above the top of the sewer line to the bottom of the water pipe?
12"
When a water pipe and sewer pipe are placed in a common trench what is the minimum
clear horizontal distance the water pipe shall be from the sewer pipe?
By taking 80% of the total DFU's = 173 DFU's
A 4' drainage line has to be run at a pitch of 1/8" per foot. How is the maximum fixture
unit low now determined?
Provide minimum requirements and standards for the protection of the public health,
safety, and welfare.
Purpose of plumbing code.
Capped
Openings into drainage or vent system excepting those opening to which plumbing
fixtures are properly connected or which constitute vent terminals shall be permanently
plugged or _________ in an approved manner.
Owner or owners agent
Who is responsible for maintaining the plumbing and drainage system in a building?
, Work or systems that have already been installed prior to the effective date of the
existing code.
What is meant by the term "existing work"?
Blockages or leaks
What type of work is exempt from a plumbing permit?
180 Days
If work is not started, how many days is a permit valid?
After it has been tested, inspected, and approved
When can plumbing work be covered and concealed?
Person with the permit, doing the work
Who notifies the authority have jurisdiction when plumbing work is ready for
inspections?
Prevent siphonage
What is the purpose of a vacuum relief valve
To slow corrosion of the inside of the tank
What is the purpose of the anode rod?
To send cold water to the bottom of the tank
What is the purpose of the dip tube?
To prevent siphonage and back pressure on the dip tube.
What is the purpose of the anti-siphon hole?
When the water temperature drops below a set temperature the immersion element
turns on to reheat the water.
Explain how the electric immersion elements work on an electric water heater.
Ohms on a multimeter to check for continuity
How does a plumber check to see if an immersion element is good or bad
6" above the water heater on the cold water supply
Where shall the vacuum relief valve be located
fullway valve
What type of valve is required on the cold water supply to a water heater
18"
Pex tubing shall not be installed within the first ______ of the pitting connected to a
water heater
24"
What is the maximum length flexible water heater connector allowed
12"
Unions shall be installed not more than 12" from a water heater tank
150
Pressure relief valves shall be set at a pressure not more than ________ psi
6"-24"
How far above the ground or floor level shall a relief valve drain terminate?
Galvanized Steel, Copper, CPVC
Name two allowable materials for relief valve drains
Drain pan w/ 3/4" drain
What is required when a water heater is located in an attic and damage would result in
a leaking water heater?
Prohibited
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