NC Plumbing Practice Test 2 Exam Questions and Answers
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Course
Plumbing
Institution
Plumbing
When using copper for vent flashing material, the copper should weigh____ - Answer-8oz/sq. ft
The minimum depth of lead in a caulked joint is___ - Answer-1"
Air and water tests of drainage and vent systems require that the water or air pressure be maintained at a constant level for___ minutes...
NC Plumbing Practice Test 2 Exam
Questions and Answers
When using copper for vent flashing material, the copper should weigh____ - Answer-
8oz/sq. ft
The minimum depth of lead in a caulked joint is___ - Answer-1"
Air and water tests of drainage and vent systems require that the water or air pressure
be maintained at a constant level for___ minutes - Answer-15
1 1/2" PVC-DWV installed in a residential building must be supported ___in the vertical.
- Answer-Every 10'
The trap seal is the maximum vertical depth of liquid that a trap will retain, measured
between the ___and the top of the___ of the trap - Answer-Crown weir, dip
1 1/2" PVC installed in the horizontal must be supported every___ in a commercial
building. - Answer-4'
According to the code, a ___shall not be larger than the fixture drain to which it is
connected. - Answer-Trap
YOu are installing a horizontal branch of a residential building drain receiving the
discharge of 23 d.f.u.'s. What is the minimum size of the drain? - Answer-2 inch of
installed at 1/2"/ft. fall and receives no water closets
A 4 inch building sewer may carry a maximum of - Answer-180 d.f.u.'s if installed at 1/8"
/ft
That part of the lowest piping of a drainage system which receives the discharge from
soil, waste and other drainage pipes inside the walls of the building and conveys it to
the building sewer 10 feet outside the building wall can best be described as - Answer-
The building drain
The minimum size drain which can be installed under a slab or below a basement or
cellar is: - Answer-2"
A vent pipe which receives waste form a shower and a lavatory that vents a water closet
is: - Answer-A wet vent
Vent terminals located beneath windows must be a least: - Answer-10 feet away from
the window
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