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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
Which of the following is considered a disadvantage to the annual operation of the smoke control system
It is slower than automatic operation
26
What is the breaking point between high and low voltage equipment?
600 volts
27
what direction do all top panels open in elevator cars
outward
28
What depth should the draft stop be when protection an escalator that services more than two floors
18 inch
29
What is generally provided for fans with capacities exceeding 2000 cubic feet per minute
Duct detectors
30
What should be done if a moving escalator is encountered during emergency operations
turn it off
31
Where is the car door motor located on passenger elevators
Top of the car
32
Who is responsible for controlling and monitoring elevator design construction and operation?
Government
33
Which type of stairs extend in a straight line for their entire length?
straight-run
34
Where must elevator hoist ways be vented today to prevent mushrooming
Top
35
What fire rating are elevator hoist ways usually required to have
1- to-2 hour
36
What does the traction elevator use to reduce the amount of energy needed to raise the elevator
Counterweight
37
What is the minimum number of sides of the exterior stairway that will be open to provide natural ventilation?
One
38
Which type of stairway should firefighters use with extreme caution due to their inherent instability
Fire escapes
39
What was the maximum number of stories that a hydraulic elevator could service in the past
six
40
Where is the drive equipment for the traction elevator generally located
Machine room in the hoistway
41
What are used to convert high voltage electricity to an appropriate voltage for use in the building?
Transformers
42
Which type of battery is most often used for emergency power supplies that require batteries
Lead-acid
43
Which is the most common engine type used in a generator
diesel
44
What was used in the early forced-air systems to cool and ventilate a building
Openable windows
45
What is the standard speed of escalators today
100 fpm (30.4 m/min)
46
How is the air supply shaft oriented in relations to the pressurized stairwell;; when a multiple injection system is being used
parallel
47
Which type of stair design allows stairs to be placed in a very small space?
Spiral
48
What means is used to access a passive smoke proof enclosure
exterior balcony
49
How many levels are convenience stairs usually restricted to connecting under building code
two
50
What is the most common type of elevator found in buildings over six stories in height?
Traction
51
What is used to inhibit smoke movement in the smile control system
mechanical fans
52
Which term is used to describe an elevator that has been designed to carry passengers and freight
Service
53
Which is a concealed vertical channel in which utility conduits are housed
Pipe chase
54
Where are sprinklers required to be located in a refuse or laundry chute
At the top and in the termination room
55
What is the minimum width of the run allowed on a circular stairway
10 inches
56
Which type of system adjusts the airflow into the pressurized stairwell depending on the number of doors that have been opened
compensated
57
What is the minimum pressure difference that NFPA 92A requires in the pressurized stairwell
0.0018 pounds per square inch(12.5 Pa)
58
Where must elevator hoist ways be vented today to prevent mushrooming
Top
59
Which NFPA standard contains requirements for protection when HVAc ducts penetrate a fire rated assembly
90A
60
What lowers an elevator that is hydraulically powered
Gravity
61
At what interval are access doors usually placed in a blind hoist way below the lowest level served
Every three floors
62
What is used for overpressure relief in a stairwell
Dampers
63
What can be used to automatically switch the HVAC system to fire operation
Smoke detectors
64
What is the most common type of elevator found in buildings over six stories in height
Traction
65
Which should not be used to activate the smoke control system
Manual pull stations on building fire alarm system
66
When do the brakes on a traction elevator with AC motors function during normal operations
aid directly in stopping the car
67
What is used to keep smoke out of the stairway with an active smoke proof enclosure
pressure
68
What is the minimum percentage of the ceiling height that should be used for the depth of the curtain board
20 percent
69
What is typically the maximum amount of diesel fuel allowed to be stored in the day tank
60 gallons
70
What direction does the ductwork of a grease duct most often travel
Vertical
71
Which type of system adjusts the airflow into the pressurized stairwell depending on the number of doors that have been opened
compensated
72
What is activated if the speed reducing switch fails to slow the car sufficiently
Overspeed switch

BC 4th (14 decks)

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