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
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
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
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?
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