Journeyman's Exam 258 complete Solutions 100% correct.

Journeyman's Exam 258 complete
Solutions 100% correct.
Journeyman's Exam 258 complete
Solutions 100% correct.
1/4" - ANSWER-Threads of drainage fittings shall be tapped as to allow _____ pitch per
foot

4 lbs - ANSWER-Lead used for safe pans shall not be less than ________ per square
foot

Copper Tube, Cast Iron, Stainless steel, ABS, PVC DWV - ANSWER-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 - ANSWER-What are the fixture unit values for the following traps

Double fixture fitting - ANSWER-What type of fitting is used for continuous waste and
venting of lavatories back to back?

1" - ANSWER-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 - ANSWER-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 - ANSWER-Cleanout locations required by code

100' - ANSWER-Maximum distance a cleanup can be spaced apart

12"
18" - ANSWER-Minimum clearance in front of a cleanup for 2" or less
Minimum clearance in front of a cleanup for 2" or more

20' - ANSWER-Underfloor cleanup shall not be located more than _____ from an
access door, trap door, or crawl hole

,Journeyman's Exam 258 complete
Solutions 100% correct.
Back Water Valve - ANSWER-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 - ANSWER-Sewage ejectors receiving the discharge of water closets or ruinals shall
have a discharge capacity not less than ___ gallons per minute

2" - ANSWER-What is the minimum size discharge pipe for an ejector installed in a
single dwelling?

2" - ANSWER-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 - ANSWER-Can macerating toilet systems be
installed instead of a sewage pump system

3/4" - ANSWER-What is the minimum size discharge pipe for a macerating toilet system

1/4" per foot - ANSWER-What is the minimum pitch required fora 2" horizontal drain?

Swing check valve - ANSWER-The discharge line from an ejector pump shall be
provided with an accessible ___________ and gate or ball valve.

Downstream of the backwater valve - ANSWER-Where shall the gate valve be located
on the discharge line on an ejector pump

8' - ANSWER-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 - ANSWER-What are the requirements when testing the DWV
system Water and Air?

When the dwelling is more than 200' away from the sewer. - ANSWER-When is the
public sewer considered not being available?

2' away from the building - ANSWER-At what point does the building sewer begin?

DFU's - ANSWER-How is the size of the building sewer determined?

300' - ANSWER-What is the maximum distance allowed between approved manholes?

, Journeyman's Exam 258 complete
Solutions 100% correct.
12" - ANSWER-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" - ANSWER-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 - ANSWER-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. - ANSWER-Purpose of plumbing code.

Capped - ANSWER-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 - ANSWER-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. - ANSWER-What is meant by the term "existing work"?

Blockages or leaks - ANSWER-What type of work is exempt from a plumbing permit?

180 Days - ANSWER-If work is not started, how many days is a permit valid?

After it has been tested, inspected, and approved - ANSWER-When can plumbing work
be covered and concealed?

Person with the permit, doing the work - ANSWER-Who notifies the authority have
jurisdiction when plumbing work is ready for inspections?

Prevent siphonage - ANSWER-What is the purpose of a vacuum relief valve

To slow corrosion of the inside of the tank - ANSWER-What is the purpose of the anode
rod?

To send cold water to the bottom of the tank - ANSWER-What is the purpose of the dip
tube?

To prevent siphonage and back pressure on the dip tube. - ANSWER-What is the
purpose of the anti-siphon hole?