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Flashcards in General Plumbing By E. Troise. Deck (66):

1. What is auxiliary water supply?

Any water supply, on or availabl, to the premises other than the purveyor's approved public potanlenwaternsupply.


2. What is backflow?

The flow of water or other liquids, mixturesbor substances, under positive or reduced pressure in the distribution pipes of a potable water supply from any source other than its intended source.


3. What is backflow preventer?

A device or means designed to prevent backflow or back-siphonage. Most commonly categorized as air gap, reduced pressure principalndevice, double check balve assembly, pressure vacuum breaker, atmospheric vacuum breaker, hose bibb vacuum breaker, resodential dual check, dual check with intermediate atmospheric vent, and barometric loop.


4. What is air gap?

A physical separation sufficient to prevent backflow between the free-flowing discharge end of the potanle water system and any other system. Physically defined as a distance equal to twice the diameter of the supply side pipe diameter but never less than one inch.


5. What is atmospheric vacuum breaker?

A device which prevents back-siphonage by opening an atmospheric bent when there is either a negative pressure or sub- atmospheric pressure in a water system.


6. What is barometric loop?

A fabricatedbpiping arrangement rising atnleast thirty-five (35) feet at its topmost point above the highestbfixture it supplies. It is utilized in water supply systems to protect against back-siphonage.


7. Other name foe common vent?

A. Dual vent.
B. Unit vent.


8. What is aeeaway?

A space below grade, adjacent to a building, open to the outerbair and enclosed by walls.


9. What is atrium?

A verticalopening or series of openings within a building connecting three or more floors, which may be covered at the top, and which is used for purposes other than an enclosed stairway, elevator hoistway or utility shaft.


10. Balloon frame?

Light tinber construction in which the exterior wall consist of studs that are either continuous through floors or interrupted only by thickness of plates.


11. What is bearing?

As applied to a wall or partition, shall mean supporting any bertical load in addition to its own weight.


12. What is bulkhead?

An enclosed structure on or above the roof of any part of a building, enclosing a shaft, stairway, tank, or service equipment, or other space not designed or used for human occupancy.


13. Whar is cabaret?

The term cabaret shall mean any room, place or space in which any musical entertainment, singing, dancing or other similar amussement is permitted in connection with an eating and drinking establishment.


14. What is cableway?

A power operated system for moving loads in a generally horizontal direction in which the loads are conveyed on an overhead cable, track or carriage.


15. Car door or gate?

As applied to an elevator, shall mean the sliding portion of the car that closes the opening giving access to the car.


16. What is charging chute (incinerator)?

An enclosed vertical passage through which refuse is fed to an incinerator.


17. What is construction class (group)?

The category in which a building or space is classified by the provisions of subchapter three of this chapter, based on the fire-resistance rating s of its construction elements.


18. What is console lift?

A section of the floor area of a theater or auditorium that can be raised and lowered.


19. What is cross-connection (fire extinguishing system)?

Piping between risers and siamese connections in a standpipe or sprinkler system.


20. What is curb level?

The legally established level on the curb in front of a building, measured at the center of such front. When a building faces on more than one street, curb level shall mean the average of the legally established levels of the carbs at the center of each front.


21. What is dead load?

Materials, equipment, constructions, or other elements of weight supported in, on, or by the building (including its own weight) that are intended to remain permanently in place.


22. What is dumbwaiter?

A hoisting and lowering mechanism equipped with a car that moves in guides in a substantially bertical direction, the floor area of which does not exceed nine square feet, whose total inside height whether or not provided with fixed or movable shelves does not exceed four feet, the capacity of which does not exceed five hundred pounds, and that is used exclusively for carrying materials.


23. What is grade beam?

A beam, at, near, or below grade, spanning between footings, pile caps or foundation piers, and supporting walls or other elements of a building.


24. What is habitable room?

A residential room or space, having the minimum dimensions requiredbby section 27-751 of article six of subchapter twelve of this chapter in which the ordinary functions of domestic life are carried on, and which includes bedrooms, licing rooms, studies, recreation rooms, kitchens, dining rooms and other similar spaces, but does not include closets, halls, stairs, laundry rooms, or bathrooms.


25. What is high rise?

A structure seventy-five feet or more in height.


26. What is ponding?

The collection of rainwater.


27. What is sidewalk elevator?

A freightbelevator that operates between a sidewalk or other area outside of a building and floor levels inside the building below such area which has no landing opening into the building at its upper limit of travel, and which is not used to carry automobiles.


28. What is single pole scaffd?

A platform resting on putlogs or crossbeams, the outerbends of which are supported on ledgers secired to a single row of posts or uprights, and the inner ends of which are supported by a wall.


29. What is spandrel wall?

That portion of an exterior wall between the top of one opening and the bottom of another in the story directly above.


30. What is vent system (combustion)?

A gas vent or chimney, together with a vent connector that forms a continuous unobstructed passagevay from gas burning equipment to the outdoor air for the purpose of removingbventbgases.


31. What is dual check valve assembly?

An assembly of two (2) independently operating spring-loaded check valves with tightly closing shut-off valves on each side of the checknvalves, plus properly located testncocks for the testing of each check valve.


32. What is double check valve with intermediate atmospheric vent?

A device having two (2) spring-loaded check balves separated by an atmospheric vent chamber.


33. What is hose bibb vacuum breaker?

A device which is permanently attached to a hose bibb and which acts as an atmospheric vacuum breaker.


34. Potable water outlets subject of cross-connection?

1. Hose bibbs.
2. Slop sinks.
3. Wash roommfacilities.
4. Cafeteria and kitchens.
5. Fire protection and siamese outlets.
6. Irrigation outlets.
7. Boiler rooms.
8. Mechanical rooms.
9. Laundry faclities.
10. Production floor. Air-conditioning cooling towers.


35. What is pressure vacuum breaker.

A device containing one or two independently operated spring-loaded check valves and an independently operated spring loaded air inlet valve located on the discharge side of the check or checks. Device includes tightly closing shut-off valves on each side of the check valves and properly located test cocks for the testing of the check valve(s).


36. What is reduced pressure principle back-flow preventer?

An assembly consisting of two(2) independently operating approved check valves with an automatically operating differential relief valves located between the two (2) check valves, tightly closing shut-off valves on each side of the check valves plus properly located test cocks for the resting of the check valves and the relief valve.


37. What is residential dual check?

An assembly of two (2) spring-loaded, independently operating check valves without tightly closing shut-off valves and cocks. Generally employed immediately downstream of the water meter to act as a containment device.


38. Use of air gap?

Lavatory, sink or bathtub spouts. Residential dishwasher and clothes washer.


39. Use of pipe applied vacuum-breaker?

Gooseneck and appliances no subject to back pressure or continuous pressure.


40. Use of hose bibb vacuum breaker?

Hose bibbs, hydrants, sillcocks.


41. Use of dual check valve with atmospheric vent?

1. Residential boilers, spas, hot tubs and swimming pool feed-lines
2. Food processing equipment.
3. Photo lab equipment.
4. Hospital equipment.
5. Sterilizers.
6. Commercial dishwashers.
7. Water cooler HVAC.
8. Landscape hose bib.
9. Wash-down rocks.
10. Make up water to heat pumps.


42. Use of reduced pressure zone back-flow preventer?

1. Chemical tank.
2. Chilled water.
3. Cooling towers.
4. Commercial boilers, swimming pools, spas.
5. Heat exchangers.
6. Hospital equipment.
7. Lawn irrigation (type 2).
8. Solar system.
9. Submerged coils.
10. Treatment plans.
11. Fire sprinkler (high hazard as determined by commissioner.


43. What is double-check valve assembly?

1. Fire sprinkler systems (type 2 low hazard).
2. Wash-down rocks.
3. Large pressure cookers and steamers.


44. Use of pressure type Vacuum breaker?

1. Degreaser.
2. Laboratories.
3. Photo tanks.
4. Type 1 lawn sprinkler systems and swimming pools (must be located outdoors).


45. Use of dual check valve?

1. Fire sprinkler systems type 1 building.
2. Outside drinking fountains.
3. Automatic grease recovery device.


46. Use of atmospheric vacuum breaker?

1. Chemical faucet.
2. Soft drink, coffee and other beverage dispensers.
3. Ice makers.
4. Dental chairs.
5. Hose sprays on faucets not meeting standards.
6. Miscellaneous faucet applications.


47. Use of indoor vacuum breaker?

1. Degreasers.
2. Laboratories.
3. Photo tanks.
4. Type 1 lawn sprinkler systems and swimming pools (must be located outdoors).


48. What is used in heating system boilers to inhibit corrosion of the metal pipe?

Sodium dichromate.


49. What is spill level?

The horizontal plane to which water will rise to overflow through channels or connections which are not directly connected to any drainage system, when water is flowing into the fixture at the maximum rate.


50. How many fixtures can be connected to a horizontal branch drain to be circuit vented?

A maximum of 8 fixtures.


51. How shall each fixture drain connected to the horizontal branch being circuit vented?



52. How shall the circuit vent connection be located?

Between the two most upstream fixture drains.


53. What shall not the circuit vent pipe receive the discharge of?

Any soil or waste.


54. How shall the entire length of the circuit vent section and branch drain be sized?

Based on the total drainage fixture unit discharge to the branch drain.


55. How may more than 8 fixtures be circuit-vented on a horizontal branch drain.

1. Each group of 8 fixtures shall be considered a separate circuit vent.
2. Each separate circuit-vented horizontal branch that is interconnected shall be sized independently.
3. The down-stream circuit-vented horizontal branch shall be sized for the total discharge into the branch, including the upstream branches and the fixture within the branch.


56. When shall a relief vent be provided to a horizontal branch with circuit vent?

When line receives the discharge of 4 or more water closets, otherwise a relief vent is not required.


57. How shall the relief vent connected to horizontal branch with circuit vent?

It shall connect between the stack and the most downstream fixture drain. A stack vent may serve as a relief vent.


58. When is the relief vent permitted to be a fixture drain or fixture branch to the horizontal branch with circuit vent?

When it is located within the same branch interval and maximum discharge to a relief vent shall be 4 fixture units, not a water closet.


59. What fixtures are permitted to discharge into the circuit vented branch drain?

Fixtures not being circuit-vented that are either individually or common vented. (Ex. Urinals, lavs. Etc. draining vertically into the circuit vented branch drain.).


60. Name of the wrench that has tapered ends for removable faucet seats, radiator spud sweat, make of drop forged tool steel?

Utility wrench.


61. What is used for strength, durability and weatherproof marking on steel, iron, concrete, paperboard, wood?

Industrial marking crayons.


62. What saw use any length hack saw blade - even broken pieces, clamps blade in vise-like grip, extend blade to allow blade to flex, twist handle to tighten jaws?

Job saw.


63. What wrench is used on radiator valves and traps?

Radiator spud wrench.


64. Tools for caulking joints?

1. Propane plumbers' furnaces.
2. C. I. Lead or solder pots.
3. Plumbers' ladles.
4. Asbestos joint runners.
5. Wiping cloths.
6. Lead dressers.
7. Drift plugs.
8. Turn pins.
9. Lead pipe expanding pliers.
10. 5" chipping knife.
11. Bending pins.
12. Shave hooks.
13. Cld chisels.
14. Hammer head wood chisel.
15. Hammer head gouge.
16. Yarning iron.
17. Finishing iron.
18. Throat iron.
19. Offset iron.
20. Stub iron.
21. Long curve iron.


65. How shall you isolate hot water tank heater to do repair?

1. Shot steam valve.
2. Open by pass.
3. Close hot water outlet valve.
4. Close cold water inlet valve.
5. Close hot water return valve.
6. Open damp valve.
7. Open pop safety.


66. How shall you put tank hot water heater back in service?

1. Shot damp valve.
2. Open cold water inlet valve.
3. When water overflow from pop safety shot it.
4. Open steam valve.
5. When temperature rise up to 130F* and spans regulator shot up open hot water outlet valve.
6. Close by pass valve.
7. Open return valve.