MASTER PLUMBER PAST BOARD EXAM QUESTIONS SET 2

When supporting horizontal piping 5-inches in diameter with hangers, a __ inch diameter rod shall be used.

A. 1

B. 1/2

C. 5/8

D. 3/8

B

The diameter of waste and overflow for a bathtub shall not be less than ___

A. 1-1/4 inches OD

B. 1-3/8 inches OD

C. 1-1/2 inches OD

D. 1-1/4 inches OD

C

The diameter of waste and overflow for a bathtub shall not be less than ___

A. 1-1/4 inches OD

B. 1-3/8 inches OD

C. 1-1/2 inches OD

D. 1-1/4 inches OD

C

An unconfined space is a room or space having a volume equal to at least ___ of the aggregate input rating of all the fuel-burning appliances in the space.

A. 10 cu. ft per Btu/hr

B. 25 cu. ft per 1,000 Btu/hr

C. 50 cu. ft per 1,000 Btu/hr

D. 100 cu. ft per Btu/hr

C

With two noted exceptions, all shower compartments and receptors shall be

capable of encompassing a ___ diameter circle.

A. 24-inch

B. 33-inch

C. 30-inch

D. 36-inch

C

The curb or threshold of a shower compartment may be eliminated ___.

A. to comply with accessibility standards

B. for gang showers

C. in hospitals only

D. not permitted

C

Copper tubing installed vertically shall be supported at each storey or at

maximum intervals of ___.

A. 4 ft

B. 10 ft

C. 8 ft

D. 6 ft

B

No plumbing system, drainage system, building sewer, private sewage disposal system, or parts thereof, shall be located in ___

A. any lot other than the lot that is the site of the building served by such

facilities

B. the walls, floors, or underground in any building

C. pipe access spaces where accessible for repair

D. any garage, or equipment or locker room

A

Solder and fluxes used in piping system conveying potable water are prohibited when the lead content exceeds..

A. 0.2 of 1 percent

B. 1 percent

C. 0.5 of 1 percent

D. less than 10 percent

A

Trough urinals shall be ___.

A. permissible if constructed of concrete

B. prohibited

C. allowed in bus stations

D. required in large associations

B

Wiped joints are permitted with ___.

A. lead

B. steel

C. plastic

D. cast iron

A

Wall-mounted water closets shall be securely bolted to ___.

A. the wall

B. double two by six studs

C. a carrier fitting

D. a closet bend

C

Joints in copper shower pan liners shall be ___.

A. burned

B. swaged

C. sealed with epoxy cement

D. soldered or brazed

D

A joint obtained by joining of metal parts with metallic mixtures of alloys that

melt at a temperature up to and including 840 degree F is a ___

A. brazed joint

B. soldered joint

C. metallic joint

D. flared joint

B

Horizontal hubless pipe shall be braced at not more than 40-foot intervals to

prevent ___.

A. noise

B. leaking

C. vertical movement

D. horizontal movement

D

All materials, fixtures, or devices used or entering into the construction of

plumbing and drainage systems shall ___.

A. conform to approved applicable standards

B. conform to the job specifications

C. conform to price job

D. conform to materials availability

A

Shower pan linings may be constructed with ___

A. 26 B&S gauge copper

B. zinc-coated steel

C. 15 pounds asphalt felt

D. 3 pounds per square foot lead

C

Joints at the roof, around pipes, shall be made watertight by the use of ___.

A. a sealing compound

B. flashing material

C. 15 pound felt

D. oakum

C

The provisions of the code allow an alternate material or method of construction provided it is ___.

A. approved by the architect as an alternate

B. accepted by the owner as analternate

C. approved by the Authority Having Jurisdiction as alternate

D. manufactured by a reputable organization

C

Piping in the ground shall be laid on __

A. a firm bed

B. concrete blocks

C. redwood stakes

D. common bricks

C

Piping, fixtures, or equipment that are installed so that they interfere with

normal operation and use of windows or doors shall be ___

A. identified for restricted use

B. protected from damage

C. approved if acceptable by the owner

D. relocated to avoid interference

D

The combination of fittings that may be used to make an offset and is considered a vertical pipe are:

A. 1-45 degree and 1-45 degree

B. 1-60 degree and 1-45 degree

C. 1-90 degree and 1-45 degree

D. 2-90 degree and 1-45 degree

A

I.P.S. is the abbreviation for ___

A. iron pipe standard

B. iron pipe size

C. inside pipe standard

D. inside pipe size

B

Burred ends of all pipe and tubing shall be ___.

A. painted to reduce friction

B. reamed to the full bore of the pipe of tube

C. avoided by use of special cutting tools

D. confined to exposed and readily accesible locations

B

To provide watertight joint in the floor, shower drains and floor drains are

required to be ___

A. extra-heavy cast iron

B. suitably flanged

C. coated with asphalt

D. set in waterproof cement

B

A mixing valve that senses outlet temperature and compensates for fluctuations in incoming hot or cold water temperature is a ___

A. combination thermostatic/pressure-balancing valve

B. thermostatic (temperature control) valve

C. pressure-balancing valve

D. none of the above

B

Mechanical devices may be used to complete backfilling where covering above any piping is at least ___ inches

A. 6

B. 12

C. 30

D. 36

B

Screws or bolts for securing floor mounted fixtures shall be ___.

A. brass

B. aluminum

C. galvanized steel

D. die-cast zinc

A

The organization, office, or individual responsible for enforcing the

requirements of a code or standard is the ___

A. Authority Having Jurisdiction

B. plumbing inspector or department

C. building department

D. administrative authority

A

All piping fixtures, and equipment shall be adequately supported in accordance with the ___.

A. contractor

B. code

C. owner

D. engineer

B

That portion of a drainage system that does not drain by gravity into the

building sewer is known as a__

A. storm sewer

B. building subdrain

C. sewer ejector

D. building supply

B

The type of acceptable joints for PEX shall be ___

A. metal insert or metal compression

B. solvent cemented

C. sheilded coupling

D. mechanical

A

The distance between the wall to the center of water closet shall not be less than __

A. 12"

B. 15"

C. 24"

D. 30"

B

Manually controlled flushometer valves shall be used to flush more than

A. one urinal

B. two urinals

C. three urinals

D. four urinals

A

An outlet on a boiler to permit emptying or discharging of sediment is called

a(an) ___

A. boiler blowoff

B. aspirator

C. relief valve

D. atmospheric check valve

C

A permanently installed mechanical device, other than an ejector, for removing sewage or liquid waste from a sump is called a sewage pump.

A. true

B. false

C. maybe

A

Pipe joint material shall be insoluble inwater, nontoxic, and applied ____.

A. on male threads only

B. on pipe threads and inside fittings

C. on inside fitting threads only

D. in warm weather only

A

gutters in public shower rooms shall be sloped not less than ___

A. 5%

B. 10%

C. 2%

D. 3%

C

The vertical depth of a trap seal is measured from __

A. the outlet of the trap to the bottom of the trap

B. the inlet of the trap to the outlet of the trap

C. the crown weir to the top of the dip of the trap

D. the inlet of the trap to the bottom of the trap

C

Static pressure is pressure existing without any flow.

A. true

B. false

C. maybe

A

Roofs, inner courts, vents shafts, light wells, or similar areas having rainwater

drains shall discharge to a ___

A. outside of the building or to the gutter

B. sanitary sewage system

C. private sewage disposal system

D. sump with pump discharge into the house drain

A

Automatically controlled flushometer valves may be substituted for ___

A. flush tanks

B. flow control

C. gate valves

D. lever valves

A

A horizontal drain that is sized to provide free movement of air above the flow

line of the drain is called a __

A. solvent waste and vent system

B. combination waste and vent system

C. continuous waste system

D. durham waste and vent system

B

Q.44) A drinking fountain installed outside shall be connected to an approved

drainage system.

A. true

B. false

C. maybe

A

The discharge from clinical sinks and conveyed to the building drain is defined

as a waste pipe.

A. true

B. false

C. maybe

B

When brazing, the alloys shall have a melting temperature of at least __ degrees F.

A. 800

B. 840

C. 1000

D. 1200

C

It is permitted to drill and tap a vent pipe to connect an indirect waste pipe.

A. true

B. false

C. maybe

B

By code definition, a stack is always __

A. straight

B. vertical

C. horizontal

D. exposed

B

A device installed in a drainage system to prevent reverse flow is a ___

A. sewage ejector

B. check valve

C. backflow preventor

D. backflow valve

D

A connection to the public sewer, or private sewage disposal system, is required for ___

A. buildings with plumbing fixtures

B. buildings with emergency drain systems

C. buildings with storm drain systems

D. buildings with or without plumbing fixtures

A

The building drain from the front building may be extended to the rear building when both buildings are located ___.

A. on an ineterior (when driveway cannot be used)

B. 300 ft from the public sewer

C. 200 ft from the public sewer

D. on a corner lot

A

Water closet set side by side shall be no closer than ___

A. 15 inches center to center

B. 30 inches center to center

C. 24 inches center to center

D. 18 inches center to center

B

Surfaces to be joined by soldering or brazed shall be cleaned bright by ___.

A. mechanical or manual means

B. a self-cleaning flux

C. a corrossive flux

D. sulfuric acid

A

Water that is safe for people to drink is referred to by this code as ___

A. industrial water

B. potable water

C. soft water

D. hard water

B

Drinking fountains shall not be installed in ___.

A. public toilet rooms

B. schoolyards

C. bars

D. restaurants

A

Threaded pipe (I.P.S.) 3/4 inch, except for gas piping, installed horizontally shall be supported at approximately ___.

A. 5-foot intervals

B. 10-foot intervals

C. 12-foot intervals

D. 15-foot intervals

B

A standard that is an extensive compilation of provision covering broad subject matter is the definition for ___

A. listed

B. legal document

C. code

D. standards

C

The restroom facilities in a private day care center are classified as public use.

A. true

B. false

C. maybe

A

A pipe inside a building that conveys storm water from the roof to a strom drain is called a(an) ___

A. conductor

B. building storm drain

C. rain leader

D. adductor

A

In seismic zone 1 and 2, hubless cast iron piping 5 inches or larger suspended in exposed locations over high traffic areas, and over four feet in length, shall be provided with support on both sides of the coupling

A. true

B. false

C. maybe

B

All design, construction, and workmanship shall be in conformity with ___

A. practices of the contractor

B. accepted engineering practices

C. standard shop procedures

D. job plan and specifications

B

The minimum distance from a side wall or partition to the center of a urinal

shall be ___ inches

A. 6

B. 12

C. 18

D. 24

B

Galvanized sheet steel of not less than 16 U.S. gauge may be used to make

dishwashing sinks for ___

A. restaurants

B. lunch counters

C. commercial buildings

D. residential buildings

A

The principal artery of the venting system to which branches may be connected is called the ___

A. branch vent

B. vertical vent

C. vent

D. main vent

D

Tub waste openings in framed construction shall be protected by ___.

A. completely covering the opening with plywood collars

B. metal collars or screens

C. filling the annular space with approved fiber material

D. flasings

B

A pressure surge-absorbing device operating through the compressibility of air is called a(an) ___

A. flushometer valve

B. hammer arrestor

C. air chamber

D. backflow preventor

C

Test gauges shall not have a pressure range more than __ the test pressure.

A. equal

B. twice

C. 15 psi

D. 60 psi

B

The overflow pipe from a fixture shall be connected on the ___-

A. house or inlet side of the fixture trap

B. operation side of the fixture trap

C. sewer or outlet side of the fixture trap

A

Fixture connections between drainage pipes and water closets shall be made

with__-

A. expansion joints

B. unions

C. flanges

D. hot poured compound

C

Two-inch horizontal copper tubing drain pipe shall be supported at ___

A. 4 foot intervals

B. 6 foot intervals

C. 10 foot intervals

D. 12-foot intervals

C

PEX piping may be coupled together with shielded couplings.

A. true

B. false

C. maybe

B

PEX is the definition for ___

A. polyethylene

B. polybutylene X

C. cross-linked polyethylene

D. none of the above

C

Sleeves shall be provided to protect all piping through ___ and ___ walls.

A. floors, concrete

B. wood, concrete

C. concrete, masonry

D. none of the above

C

Disposal of sewage, or other liquid waste, shall be by means of __

A. the drainage system of the building or premises

B. sewage retaining tanks

C. subsurface leaching pits

D. chemical toilets

A

The distance between the center of urinal shall not be less than ___

A. 12"

B. 15"

C. 24"

D. 30"

C

A document, the main text of which contains only mandatory provisions using

the word "shall" to indicate requirements, is best described as a __

A. code

B. standard

C. law

D. legal document

B

gutters in public shower rooms shall be sloped not less than ___

A. 2%

B. 3%

C. 5%

D. 10%

A

All trenches deeper than the footing of any building or structure and paralleling the same shall be at least ___.

A. 5-foot intervals

B. every other story

C. each floor not to exceed 15 ft

D. 10-foot intervals

C

A device and system of piping that maintains a water seal in a remote trap is

called a trap primer.

A. true

B. false

C. maybe

A

When installing ___, the Authority Having Jurisdiction shall require evidence of

the competency of the installers.

A. potable water piping

B. fuel-gas piping

C. medical gas piping

D. plumbing appurtenance

C

All pipe, pipe fittings, tyraps, fixtures, materials, and devices used in plumbing

system shall be ___

A. listed or labaled by a listing agency

B. approved by the Authority Having Jurisdiction

C. free from defects

D. all of the above

D

No dry or chemical closet (toilet) shall be installed in any building used for

human habitation unless first approved by the ___

A. owner

B. plumbing inspector )

C. city clerk

D. health officer CHO, MHO

D

A pipe that makes an angle of not more than 45 degree with the vertical is

considered ___

A. vertical

B. horizontal

C. crooked pipe

D. diagonal pipe

A

The minimum wall thickness for threaded plastic pipe shall be ___

A. Schedule 40

B. Schedule 80

C. 1/8 inch

D. 1/16 inch

B

Unsanitary and insanitary share the same meaning

A. true

B. false

C. maybe

A

A device integrated within an ai accumulator vessel that is designed to discharge a predetermined quantity of water to fixtures for flushing purposes is a (an) __

A. surge tank

B. day tank

C. expansion tank

D. flushometer tank

D

Fixtures having concealed slip-joint connections shall be provided with _--

A. a utility space or access panel

B. a ladder and a light fixture

C. red brass fittings

D. rubber gasket

A

The joint of a wall-hung lavatory, where it is in contact with the wall, shall be

___

A. smooth

B. painted

C. concealed

D. watertight

D

Every water supply to a urinal shall be protected by an approved __-

A. relief valve

B. vacuum breaker

C. metering valve

D. automatic switch

B

Tanks flushing more than one urinal shall be ___

A. automatic in operation

B. acid-resistant

C. enamel

D. manual in operation

A

Closet bends or stubs shall be cut off so as to present a smooth surface, even

with the ___.

A. top of the rough floor

B. top of the closet ring

C. top of the finish floor

D. bottom of the closet ring

B

The length along the centerline of the pipe and fittings is the ___

A. diameter length

B. circumferential length

C. developed length

D. diagonal length

C

A combination building sewer is (a)___

A. combination of all sewer and drainage piping from inside and outside of the building

B. building sewer that conveys industrial waste and domestic sewage

C. building drains that convey waste and storm water

D. building sewer that conveys both sewage and storm water

D

When a backflow prevention device does not bear a critical level marking, the

part of the device that shall constitute the critical level is the ___

A. top

B. center

C. bottom

D. outlet invert

C

Voids around piping passing through concrete floors on the ground shall be ___

A. flanged

B. protected

C. sealed

D. packed

C

The lowest portion of the inside of a horizontal pipe is called the ___

A. invert mass

B. invert

C. flat vent

D. bottom

B

Drain pipes subject to condensation over food storage in food-handling

establishment shall be ___.

A. installed with a spill pan

B. thermally insulated

C. remouled out of the area

D. tested with 5 psi of air

B