QUESTIONS AND CORRECT ANSWERS
BUNDLED RESOURCE
●● 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
●● 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.