Test 1

Question 1

The one statement that best describes a “battery of fixtures” is :

A. All fixtures from one compartment discharging into a common branch

B. Back-to-Back water closets discharging into a common branch

C. Any group of two or more similar adjacent fixtures that discharge into a common horizontal waste or soil branch

D. A two compartment sink discharging into a common branch

Answer 1

C. Any group of two or more similar adjacent fixtures that discharge into a common horizontal waste or soil branch

Question 2

The distance that a building house drain shall be considered to extend outside a building wall:

A. 1’ (25.4mm)
B. 2’ (51mm)
C. 3’ (76mm)
D. 5’ (1524mm)

Answer 2

D. 5’ (1524mm)

Question 3

The Caliber of hard temper ‘L’ copper tube shall mean:

A. Nominal inside diameter
B. Nominal outside diameter
C. Actual inside diameter (I.D.)
D. Actual outside diameter (O.D.)

Answer 3

C. Actual inside diameter (I.D.)

Question 4

In a complete plumbing installation, in order to prevent back-siphonage at lavatory, it is common to make use of:

A. A system of cross-connection
B. A system of continuous venting if a lavatory is of one group
C. A system of common venting if the lavatory is one of two set back-to-back
D. An air gap between a faucet sprout and the flood level rim of the fixture

Answer 4

D. An air gap between a faucet sprout and the flood level rim of the fixture

Question 5

5. The “dezincification” of brass pipe occurs most often in:

A. Yellow brass.
B. silver brass.
C. Red brass.
D. Brass pipe buried in cinders.

Answer 5

A. Yellow brass

Question 6

6. In order that a branch may be correctly termed dead end it shall be terminated by a fitting at a developed length of ____ or more:

A. 5’.
B. 4’.
C. 3’.
D. 2’.

Answer 6

D. 2’

Question 7

7. “Zeolite” is a term associated most nearly with:

A. Acid waste.
B. Water softening.
C. Hot water piping.
D. Septic tanks.

Answer 7

B. Water softening

Question 8

8. One reason for preferring the use of water rather than compressed air for testing is most nearly:

A. Less danger of an explosion if the line breaks.
B. use of water better simulates actual operating conditions.
C. Easier to discover leaks.
D. Water being in-compressible, there is little danger getting high pressures into the pipe.

Answer 8

A. Less danger of an explosion if the line breaks

Question 9

9. In the event of a stoppage in a natural gas pipe line the recommended gas to use to remove the stoppage is most nearly:

A. Argon.
B. Oxygen.
C. Nitrogen.
D. Hydrogen.

Answer 9

C. Nitrogen

Question 10

10. Before inspection starts of a water test on the rough plumbing the portion tested shall be watertight for at least :

A. 15 min.
B. 10 min.
C. 30 min.
D. 60 min.

Answer 10

A. 15 min

Question 11

11. A gas pipe installation operating at one pound per square inch must be subjected to a test pressure of most nearly:

A. 50 psi a minimum of 30 minutes.
B. 6 lbs. per sq. in. of air pressure .
C. 10 psi of air pressure.
D. 22 inch column of mercury.

Answer 11

A. 50 psi a minimum of 30 minutes

Question 12

12. Of the following wrenches, the one which is best suited for use on screwed valves and fittings having hexagonal shape connections is the:

A. Pipe wrench.
B. Monkey wrench.
C. Open-end wrench.
D. Strap wrench.

Answer 12

B. Monkey wrench

Question 13

13. The definition “the lowest portion of the inside top surface of the channel through the trap”, best describes which one of the following:

A. Dip.
B. Crown weir.
C. Crown.
D. Seal.

Answer 13

A. Dip

Question 14

14. A side vent shall be installed most nearly:

A. Every dry vent connecting to a horizontal drain shall connect above the centerline of the horizontal drain pipe.
B. a vent connecting to the drain pipe through a fitting at an angle not greater then 45 degrees to the vertical.
C. In lieu of a common vent.
D. When the fixture is located against a wall.

Answer 14

A. Every dry vent connecting to a horizontal drain shall connect above the centerline of the horizontal drain pipe.

Question 15

15. A vent that is installed to permit additional circulation of air between a so stack and a vent stack is most nearly:

A. Circuit bent.
B. common vent.
C. Loop vent.
D. Relief vent.

Answer 15

D. Relief vent.

Question 16

16. The one type trap not prohibited for use in a plumbing system is most nearly:

A. Building trap, a device or fitting, without joints within the water seal, installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.
B. bell trap.
C. Crown-vented trap.
D. Traps that depend on moving parts to maintain the seal?

Answer 16

A. Building trap, a device or fitting, without joints within the water seal, installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.

Question 17

17. The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim and the of the receptacle is:

A. Air break (drainage system).
B. air hap (drainage system).
C. Air gap (water distribution system).
D. Air inlet valve (water system)?

Answer 17

C. Air gap (water distribution system).

Question 18

18. A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in a stack defines most nearly:

A. Yoke vent.
B. Side vent.
C. Stack vent..
D. Branch vent.

Answer 18

A. Yoke vent.

Question 19

19. A vent connecting one or more individual vents with a bent stack or stack bent is defined as most nearly:

A. Common vent.
B. Branch vent.
C. Continuous vent.
D. Yoke vent.

Answer 19

B. Branch vent.

Question 20

20. The undesirable reversal of flow of water or mixtures of water and other liquids, gases or other substances into the distribution pipes of the potable supply of water from any source or sources:

A. Back-flow.
B. Cross-connection.
C. Back-pressure.
D. Self-siphonage.

Answer 20

A. Back-flow.

Question 21

21. A covered pit with open jointed or perforated lining into which the septic tank effluent is discharged. The liquid portion of the sewage seeps into the surrounding porous soil. The remaining solids or sludge is retained in the pit is defined most nearly:

A. A sump pit.
B. Leaching pit.
C. Dry well.
D. Seepage pit

Answer 21

D. Seepage pit

Question 22

22. A vertical pipe to which connections are made from the fixture side of traps and through which vapor or foul air is removed from the fixture or device utilized on bedpan washers is commonly known as:

A. Circuit vent pipe.
B. Local vent stack.
C. Indirect wast pipe.
D. Re-vent.

Answer 22

B. Local vent stack.

Question 23

23. The length of a pipeline measured along the center-line of the pipe and fittings:

A. Dead end.
B. Drainage fittings.
C. Drain.
D. Developed length.

Answer 23

D. Developed length.

Question 24

24. The trap seal:

A. The vertical distance between the weir and the top of the dip of the trap.
B. The horizontal distance between the weir and the top of the dip of the trap.
C. The vertical distance between the inlet and the outlet of the trap.
D. The vertical distance between the crown and the top of the dip of the trap.

Answer 24

A. The vertical distance between the weir and the top of the dip of the trap.

Question 25

25. A pipe that conveys sewage containing fecal matter to the building drain or building sewer:

A. Soil pipe.
B. Waste pipe.
C. Sewer pipe.
D. Street pipe.

Answer 25

A. Soil pipe