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BC 4th > Chapter 4 > Flashcards

Chapter 4 Flashcards

1
Q

Which location of the HVAC mechanical room allows for

easier intake of makeup air?

A

On the top Floor

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2
Q

What is activated if the speed-reducing switch fails to

slow the car sufficiently?

A

Overspeed switch

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3
Q

Which can form pathways for fire and smoke in the walls of
one- and two-story residential buildings because they are
not required to be installed in a rated chase?

A

Plumbing pipes

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4
Q

Where is a moving walkway generally found?

A

Airports

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5
Q

Which are designed to stop a free-falling elevator car?

A

Car safeties

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6
Q

What material is usually used to construct folding stairs?

A

Wood

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7
Q

What is generally the maximum number of floors that
convenience stairs are allowed to connect above the
basement level?

A

Two

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8
Q

How many smoke proof stair enclosures have building codes
traditionally required as a minimum for stairs serving
buildings five stories or higher?

A

One

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9
Q

What does the hydronic system rely upon as a heat transfer

medium?

A

Water

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10
Q

What allows for HVAC system efficiency?

A

Re-circulating interior air

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11
Q

What is the required fire-rated construction for
transformer rooms inside a building when a sprinkler
system is in place?

A

1-hour

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12
Q

Which zones must be coordinated in order to maximize the benefits of a smoke control system

A

Fire alarm, automatic sprinkler and HVAC

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13
Q

How many stairways are required to extend to the roof in buildings of four or more stories in height

A

one

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14
Q

How many openings will there be along the refuse chute in a five story building with a basement landing

A

six

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15
Q

Which type of occupancy could be required to store 48 hours or more of fuel for a generator

A

hospital.

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16
Q

During which stage may roof vents in a sprinklered building be a maximum value in removing products of combustion?

A

Overhaul

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17
Q

Up to what number of elevators may be located in each hoist way when more than one hoist way is in place?

A

Four

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18
Q

Which is an electrical switch designed to stop the car by removing power before it reaches the upper or lower limits of the hoistway

A

Terminal device

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19
Q

Which of the following is commonly found in manufacturing or storage occupancies and is used to transport items and materials?

A

Conveyor system

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20
Q

What os the maximum number of elevators allowed before a second hoist way will be required

A

Three

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21
Q

Which NFPA standard contains requirements for protection when HVAC ducts penetrate a fire-rated assembly

A

90A

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22
Q

Which type of penetration is not allowed in a protected stairway

A

Interior plumbing

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23
Q

What is the vertical distance between the treads of a stairway or the height of the entire stairway

A

Rise

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24
Q

Which type of stairs uses two separate sets of stairs in one common shaft?

A

Scissor

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25
Q

Which of the following is considered a disadvantage to the annual operation of the smoke control system

A

It is slower than automatic operation

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26
Q

What is the breaking point between high and low voltage equipment?

A

600 volts

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27
Q

what direction do all top panels open in elevator cars

A

outward

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28
Q

What depth should the draft stop be when protection an escalator that services more than two floors

A

18 inch

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29
Q

What is generally provided for fans with capacities exceeding 2000 cubic feet per minute

A

Duct detectors

30
Q

What should be done if a moving escalator is encountered during emergency operations

A

turn it off

31
Q

Where is the car door motor located on passenger elevators

A

Top of the car

32
Q

Who is responsible for controlling and monitoring elevator design construction and operation?

A

Government

33
Q

Which type of stairs extend in a straight line for their entire length?

A

straight-run

34
Q

Where must elevator hoist ways be vented today to prevent mushrooming

A

Top

35
Q

What fire rating are elevator hoist ways usually required to have

A

1- to-2 hour

36
Q

What does the traction elevator use to reduce the amount of energy needed to raise the elevator

A

Counterweight

37
Q

What is the minimum number of sides of the exterior stairway that will be open to provide natural ventilation?

A

One

38
Q

Which type of stairway should firefighters use with extreme caution due to their inherent instability

A

Fire escapes

39
Q

What was the maximum number of stories that a hydraulic elevator could service in the past

A

six

40
Q

Where is the drive equipment for the traction elevator generally located

A

Machine room in the hoistway

41
Q

What are used to convert high voltage electricity to an appropriate voltage for use in the building?

A

Transformers

42
Q

Which type of battery is most often used for emergency power supplies that require batteries

A

Lead-acid

43
Q

Which is the most common engine type used in a generator

A

diesel

44
Q

What was used in the early forced-air systems to cool and ventilate a building

A

Openable windows

45
Q

What is the standard speed of escalators today

A

100 fpm (30.4 m/min)

46
Q

How is the air supply shaft oriented in relations to the pressurized stairwell;; when a multiple injection system is being used

A

parallel

47
Q

Which type of stair design allows stairs to be placed in a very small space?

A

Spiral

48
Q

What means is used to access a passive smoke proof enclosure

A

exterior balcony

49
Q

How many levels are convenience stairs usually restricted to connecting under building code

A

two

50
Q

What is the most common type of elevator found in buildings over six stories in height?

A

Traction

51
Q

What is used to inhibit smoke movement in the smile control system

A

mechanical fans

52
Q

Which term is used to describe an elevator that has been designed to carry passengers and freight

A

Service

53
Q

Which is a concealed vertical channel in which utility conduits are housed

A

Pipe chase

54
Q

Where are sprinklers required to be located in a refuse or laundry chute

A

At the top and in the termination room

55
Q

What is the minimum width of the run allowed on a circular stairway

A

10 inches

56
Q

Which type of system adjusts the airflow into the pressurized stairwell depending on the number of doors that have been opened

A

compensated

57
Q

What is the minimum pressure difference that NFPA 92A requires in the pressurized stairwell

A

0.0018 pounds per square inch(12.5 Pa)

58
Q

Where must elevator hoist ways be vented today to prevent mushrooming

A

Top

59
Q

Which NFPA standard contains requirements for protection when HVAc ducts penetrate a fire rated assembly

A

90A

60
Q

What lowers an elevator that is hydraulically powered

A

Gravity

61
Q

At what interval are access doors usually placed in a blind hoist way below the lowest level served

A

Every three floors

62
Q

What is used for overpressure relief in a stairwell

A

Dampers

63
Q

What can be used to automatically switch the HVAC system to fire operation

A

Smoke detectors

64
Q

What is the most common type of elevator found in buildings over six stories in height

A

Traction

65
Q

Which should not be used to activate the smoke control system

A

Manual pull stations on building fire alarm system

66
Q

When do the brakes on a traction elevator with AC motors function during normal operations

A

aid directly in stopping the car

67
Q

What is used to keep smoke out of the stairway with an active smoke proof enclosure

A

pressure

68
Q

What is the minimum percentage of the ceiling height that should be used for the depth of the curtain board

A

20 percent

69
Q

What is typically the maximum amount of diesel fuel allowed to be stored in the day tank

A

60 gallons

70
Q

What direction does the ductwork of a grease duct most often travel

A

Vertical

71
Q

Which type of system adjusts the airflow into the pressurized stairwell depending on the number of doors that have been opened

A

compensated

72
Q

What is activated if the speed reducing switch fails to slow the car sufficiently

A

Overspeed switch

BC 4th (14 decks)

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