JOURNEYMAN'S EXAM QUESTIONS
AND ANSWERS
Double fixture fitting ✅✅correct answ-What type of fitting is used for continuous waste and
venting of lavatories back to back?
1" ✅✅correct answ-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 ✅✅correct answ-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 ✅✅correct answ-Cleanout locations required by code
100' ✅✅correct answ-Maximum distance a cleanup can be spaced apart
12"
18" ✅✅correct answ-Minimum clearance in front of a cleanup for 2" or less
Minimum clearance in front of a cleanup for 2" or more
20' ✅✅correct answ-Underfloor cleanup shall not be located more than _____ from an access
door, trap door, or crawl hole
Back Water Valve ✅✅correct answ-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 ____________
1/4" ✅✅correct answ-Threads of drainage fittings shall be tapped as to allow _____ pitch per foot
4 lbs ✅✅correct answ-Lead used for safe pans shall not be less than ________ per square foot
,Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV ✅✅correct answ-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 ✅✅correct answ-What are the fixture unit values for the following traps
20 ✅✅correct answ-Sewage ejectors receiving the discharge of water closets or ruinals shall have
a discharge capacity not less than ___ gallons per minute
2" ✅✅correct answ-What is the minimum size discharge pipe for an ejector installed in a single
dwelling?
2" ✅✅correct answ-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 ✅✅correct answ-Can macerating toilet systems be installed
instead of a sewage pump system
3/4" ✅✅correct answ-What is the minimum size discharge pipe for a macerating toilet system
1/4" per foot ✅✅correct answ-What is the minimum pitch required fora 2" horizontal drain?
Swing check valve ✅✅correct answ-The discharge line from an ejector pump shall be provided
with an accessible ___________ and gate or ball valve.
Downstream of the backwater valve ✅✅correct answ-Where shall the gate valve be located on
the discharge line on an ejector pump
, 8' ✅✅correct answ-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 ✅✅correct answ-What are the requirements when testing the DWV system
Water and Air?
When the dwelling is more than 200' away from the sewer. ✅✅correct answ-When is the public
sewer considered not being available?
2' away from the building ✅✅correct answ-At what point does the building sewer begin?
DFU's ✅✅correct answ-How is the size of the building sewer determined?
300' ✅✅correct answ-What is the maximum distance allowed between approved manholes?
12" ✅✅correct answ-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" ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-Purpose of plumbing code.
Capped ✅✅correct answ-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.
AND ANSWERS
Double fixture fitting ✅✅correct answ-What type of fitting is used for continuous waste and
venting of lavatories back to back?
1" ✅✅correct answ-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 ✅✅correct answ-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 ✅✅correct answ-Cleanout locations required by code
100' ✅✅correct answ-Maximum distance a cleanup can be spaced apart
12"
18" ✅✅correct answ-Minimum clearance in front of a cleanup for 2" or less
Minimum clearance in front of a cleanup for 2" or more
20' ✅✅correct answ-Underfloor cleanup shall not be located more than _____ from an access
door, trap door, or crawl hole
Back Water Valve ✅✅correct answ-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 ____________
1/4" ✅✅correct answ-Threads of drainage fittings shall be tapped as to allow _____ pitch per foot
4 lbs ✅✅correct answ-Lead used for safe pans shall not be less than ________ per square foot
,Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV ✅✅correct answ-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 ✅✅correct answ-What are the fixture unit values for the following traps
20 ✅✅correct answ-Sewage ejectors receiving the discharge of water closets or ruinals shall have
a discharge capacity not less than ___ gallons per minute
2" ✅✅correct answ-What is the minimum size discharge pipe for an ejector installed in a single
dwelling?
2" ✅✅correct answ-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 ✅✅correct answ-Can macerating toilet systems be installed
instead of a sewage pump system
3/4" ✅✅correct answ-What is the minimum size discharge pipe for a macerating toilet system
1/4" per foot ✅✅correct answ-What is the minimum pitch required fora 2" horizontal drain?
Swing check valve ✅✅correct answ-The discharge line from an ejector pump shall be provided
with an accessible ___________ and gate or ball valve.
Downstream of the backwater valve ✅✅correct answ-Where shall the gate valve be located on
the discharge line on an ejector pump
, 8' ✅✅correct answ-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 ✅✅correct answ-What are the requirements when testing the DWV system
Water and Air?
When the dwelling is more than 200' away from the sewer. ✅✅correct answ-When is the public
sewer considered not being available?
2' away from the building ✅✅correct answ-At what point does the building sewer begin?
DFU's ✅✅correct answ-How is the size of the building sewer determined?
300' ✅✅correct answ-What is the maximum distance allowed between approved manholes?
12" ✅✅correct answ-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" ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-Purpose of plumbing code.
Capped ✅✅correct answ-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.
