PlumbingTier1Exam1Questions&Answers.
Refining iron-ore requires extreme heat and a reducing agent to draw oxygen out of the
iron-ore. This reducing agent, called coke, is a grayish-black substance composed mostly
of carbon. - Correct Answer TrueT
Lead-and-oakum joints are strong. Plumbers make ...
Plumbing Tier 1 Exam 1 Questions & Answers.
Refining iron-ore requires extreme heat and a reducing agent to draw oxygen out of the
iron-ore. This reducing agent, called coke, is a grayish-black substance composed mostly
of carbon. - Correct Answer TrueT
Lead-and-oakum joints are strong. Plumbers make these joints by pouring molten lead
over oakum fiber to form a watertight seal. This fiber is a caulking material of old hemp
rope or jute fibers that have been treated with tar or a tar-like derivative.
Two types of oakum that are used by plumbers are __________. - Correct Answer White
and brown
GIVEN: There are numerous types of fittings and accessories that are used in a
commercial or industrial rough plumbing sanitary drainage systems. The items presented
in -[FIGURE-T1-Q4-1A: CAST IRON FITTING KNOWLEDGE] are No-hub, S.V. and XH
cast iron fittings.
What fitting(s) are/is known as "test tee(s)" ________ - Correct Answer D) II and V
GIVEN: There are numerous types of fittings and accessories that are used in a
commercial or industrial rough plumbing sanitary drainage systems. The items presented
in -[FIGURE-T1-Q4-1B: CAST IRON FITTING KNOWLEDGE] are No-hub, S.V. and XH
cast iron fittings.
What fitting(s) are/is known as a "(running traps/house traps)" ________. - Correct
Answer I and IV
GIVEN: A journeyman plumber and apprentice are installing cast iron piping in a
commercial building. They are connecting two branch lines entering the system from
opposite directions. This fitting is designed to allow them to place the horizontal runs and
vertical runs centrally.
It is a ________ fitting that allows you to place the horizontal runs and vertical runs
centrally. - Correct Answer Double sanitary tee
GIVEN: The trap is a simple, design solution to the plumbing problem of separating a
living space from a sewage system. The water seal in a trap prevents harmful gas and
overpowering odors from entering the building through the fixtures. Nonetheless, fixtures
or receptors without traps are still found in some parts of the U.S. and in many other world
countries.
Fixture traps also ____________. - Correct Answer Obstruct vermin, i.e. mice, snakes
and rats that attempt to enter a building through the DWV-system.
,: The yellow-dot identified by the letter- [A] shown in-[FIGURE-T1-Q4-1C: DRAINAGE
FITTING KNOWLEDGE] represents the ___________ of the sanitary tee, ⅛-bend and ¼-
bend. - Correct Answer Center of Fitting
A piece of black steel pipe with a diameter ⅛" to 2" that is threaded at both ends and 7-
inches long would be referred to as a _______. - Correct Answer Nipple
GIVEN: A plumber/gasfitter is installing the potable water connections and gas piping
connection associated with a replacement water heater in a residential dwelling.
The potable water connection at the water heater may require the plumber to use a non-
conducting fitting that is designed to isolate dissimilar materials by using a combination of
brass, plastic, or rubber termed a _____. - Correct Answer Dielectric union.
) GIVEN: A journeyman and apprentice plumber/gas-fitter are completing the rough gas-
fitting connections in a new multiresidential condominium building. They are installing
schedule-40 black steel with threaded joint connections in sizes from ½" to 1-¼".
Shutoff valves that are known as ______-valves should be used to control the flow of
gases and liquids. - Correct Answer Ball
GIVEN: Male and female threaded fittings are available in several sizes. If both the male
and female ends are the same size, the fitting is referred to as regular or standard. If
female or male end sizes differ the fitting is called a "reducing fitting".
: Assume that the fitting [A] shown in-[FIGURE-T1-Q4-1D: STEEL FITTING
KNOWLEDGE] is 1-inch. At the counter of the plumbing wholesaler you would order the
fitting as a __________. - Correct Answer 1"-Black malleable street-(45)
Frequent operation and precise control of flow can be achieved using a _________ valve.
- Correct Answer Globe
GIVEN: A plumber/gasfitter is completing the final gas connections in a new multi-
residential condominium building. The gas system is schedule 40 black steel with
threaded joint connections. The piping being used ranges in sizes from ½" to 1".
A fitting that cannot be used as a gas piping connection is a ______. - Correct Answer
Bushing
GIVEN: Plumbers must acquire the knowledge skills to recognize tools, parts and fittings.
There are a vast variety of parts, tools and fittings that are used in the DWV, Water
Distribution, Storm Drainage and Gas piping systems.
Which of the images shown below in-[FIGURE-T1-Q4-1E: STEEL FITTING
KNOWLEDGE] represent "concentric" couplings ____________. - Correct Answer I, III
and VI
, GIVEN: A plumber is installing the finish plumbing in public accessible men and ladies'
toilet facilities that are in a movie theatre complex. Several types of fixtures and faucets
are being used to complete the final connections. Some commercial fixtures are even
designed to be vandal-proof.
A __________ installed in a public toilet facility is typically made vandal resistant. -
Correct Answer Wall hydrant/sillcock
Prior to January 1, 1994, residential tank type water closets/toilets used at least ______ of
water per flush cycle. - Correct Answer 3.5-gallons
GIVEN: A fixture is a receptacle or device that receives water from a water supply line and
discharges water, waste, or sewage into a connected drainage system. The items
presented in-[FIGURE-T1-Q4-1F: FIXTURE CARRIER KNOWLEDGE] are plumbing
fixture components.
What device(s) are/is known as "Handicap lavatory carriers" ________. - Correct Answer
II and V
GIVEN: A plumber is installing the finish plumbing connections in a duplex residential
dwelling. Both single family residences include (2)-full baths, a ½-bath, kitchen and
laundry. A garbage disposal, dishwasher and water connection for an ice maker are
include in the kitchen fixture install.
When in use by the occupants, a garbage disposal/food waste grinder should only be
operated while __________ water is running through it. - Correct Answer Cold
FACT: Plumbers and the general public often confuse the terms sink and lavatory. The
failure to pass-on proper information, work procedures and terms in the trade is a
progression known as "Replicative Fading"-(the absence of fundamental repetitive
knowledge, or the mutation of that knowledge being passed down from one-generation to
the next and causing or promoting failure and/or harm).
A sink is a basin designed for the primary purpose of washing hands and face - Correct
Answer False
GIVEN: A plumbing/gas-fitting apprentice who has served the country in the Army, Navy,
Air Force, Marines or Coast Guard and is now a veteran may apply for examination and be
granted exclusive credits for their service
Qualified applicants for examination who are Veterans when making application for
examination shall file a copy of their ______ Discharge Papers/Separation Papers. -
Correct Answer DD-214
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