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Building Construction > Ch 3 > Flashcards

Ch 3 Flashcards

1
Q

What roles do stairs provide

A

Access to upper level

Egress

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2
Q

What stairs do not provide a means of egress

A

Convenience

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3
Q

How many levels to convenience stairs connect

A

2

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4
Q

What are the tread and riser commonly referred to as

A

Rise and Run

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5
Q

Stairs with open sides must include

A

Hand rails

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6
Q

What are pre fab stairs held together by

A

Gussets

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7
Q

How many common types of stairs are there

A

6

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8
Q

What are the common types of stairs

A 
S R
R
S
C
F
S
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9
Q

What stairs extend in a full run, 1 direction

A

Straight run

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10
Q

What type of stair is common in modern construction

A

Return

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11
Q

What stairs have a landing between floors

A

Return

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12
Q

What stairs have separate sets of stairs

A

Scissor

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13
Q

What stairs are cheaper and space efficient

A

Scissor

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14
Q

What stairs use return stairs for the safety of occupants

A

Scissor

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15
Q

What stairs need more hose to connect to the standpipe

A

Scissor

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16
Q

How many levels to circular stairs serve

A

2

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17
Q

What is the minimum width of return for circular stairs

A

10 in

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18
Q

What stairs are tapered and connect to the column

A

Spriral

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19
Q

What stairs are used primarily in residential

A

Spiral

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20
Q

Where are spiral stairs allowed to be part of egress

A

Residential

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21
Q

What stairs provide access to attic space

A

Folding

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22
Q

What stairs are commonly found in hotels and multi story buildings

A

Exit

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23
Q

What stairs are naturally ventilated on 1 or more sides

A

Exterior

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24
Q

What consists of a swinging stair to limit access

A

Fire escape

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25
Q

When are smoke proof stair enclosures required

A

5 stories or higher

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26
Q

What types of smoke control do smoke proof stairs use

A

Active

Passive

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27
Q

Where are smoke proof stair enclosures accessed from

A

Vestibule

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28
Q

Where are smoke proof stair enclosures typically located

A

Exterior perimeter

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29
Q

Which type of conveyors are in enclosed compartments

A

Screw

Pneumatic

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30
Q

How are conveyor systems protected

A

Fire doors
Shutters
Water system

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31
Q

What is the standard escalator speed

A

100ft per min

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32
Q

What speed do older escalator operate at

A

90

120 ft per min

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33
Q

What is the common protection for vertical openings

A

Sprinklers

Draft Stops

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34
Q

Where are moving walkways found

A

Airports

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35
Q

How many levels do elevators serve

A

2 or more

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36
Q

What are elevator regulations based on

A

ANSI 17.1

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37
Q

What are the classifications of elevators

A

Passenger
Freight
Service

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38
Q

What type of elevators do not have brakes

A

Hydraulic

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39
Q

What are the 2 common types of power used in elevators

A

Electric

Hydraulic

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40
Q

What is the practical floor limit of hydraulic elevators

A

6 stories

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41
Q

What are the 4 types of elevators

A

Drum
Traction
MRL
Dumbwaiter

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42
Q

What are dumb waiters intended for

A

Cargo

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43
Q

What are MRL elevators intended for

A

Passengers

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44
Q

Which elevator is most common in buildings over 6 stories

A

Traction

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45
Q

Where is the drive equipment located for a traction elevator

A

Machine room over hoistway

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46
Q

What do traction elevators use to reduce energy to raise the elevator

A

Counterweights

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47
Q

Operating heights may require the use of how many volts

A

500

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48
Q

What motors directly aide in stopping the car

A

AC

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49
Q

What elevator motor do brakes not stop the car

A

DC

50
Q

What are the most common types of power used for elevators

A

Electric

Hydraulic

51
Q

Which elevators have controls that are remotely located

A

MRL

52
Q

In low rise buildings, what do hoistways consist of

A

Gypsum

53
Q

In tall buildings, what are hoistways poured with

A

Concrete

54
Q

How long are hoistways fire rated for

A

1-2 hrs

55
Q

What walls do elevator shafts and stair shifts use

A

Shear walls

56
Q

What acts as a vertical chimney to spread fire

A

Hoistways

57
Q

How many hoistways do 4 or more elevators require

A

2

58
Q

How many floors does a zone include

A

15-20

59
Q

What hoistways are used for elevators that serve upper zones

A

Blind

60
Q

Where are access floors placed

A

Every 3 floors

61
Q

What will not allow the car to move if the doors are open

A

Electric interlocks

62
Q

Electric interlocks are not required on what elevators

A

Freight

63
Q

Electric interlocks are required on what exit

A

Side

64
Q

Where are elevator keys secure

A

Lock box

65
Q

Which openings do not include horizontal fire boundaries

A

Vertical

66
Q

Refuse chute is required to be made of

A

Noncombustable material

67
Q

Where are sprinklers required for a chute

A

Top

Termination room

68
Q

What is the primary purpose of HVAC

A

Create a comfortable environment

69
Q

What allows airflow through a building for ventilation

A

Cupolas

70
Q

Duct detectors are provided when exceeding how many square feet

A

2000

71
Q

What fuels are used in heating

A

Natural Gas

Oil

72
Q

What hazards are associated with cooling equipment

A

Refrigerate

Electricity

73
Q

What is the distribution component of HVAC

A

Ducts

74
Q

What NFPA provides requirements of ducts

A

90A

75
Q

What are the 2 fire ratings for HVAC duct

A

1 hr for less than 4 stories

2 hr for more than 4 stories

76
Q

What 2 ways are smoke control mode activated

A

Automatic

Manual

77
Q

What is the primary advantage of automatic smoke control system

A

Fast activation

78
Q

What mode is used to prevent the recirculation of smoke

A

Smoke control

79
Q

What is the primary disadvantage of an automatic smoke control system

A

Number of elements to coordinate

80
Q

What operating mode takes priority over automatic

A

Manual

81
Q

What is the disadvantage of manual operation

A

Slow activation

82
Q

What is the minimum feet smoke and heat vents open

A

4

83
Q

What increases smoke vent effectiveness

A

Draft curtains

84
Q

What is the depth size of smoke curtains

A

20% of ceiling height

85
Q

What NFPA determines the required vent area

A

204

86
Q

What is of maximum value for removing products of combustion in sprinklered buildings

A

Roof vents

87
Q

What protects stairways from products of combustion

A

Pressurized stairwell

88
Q

What system provides a more uniform flow into the stairwell

A

Multi injection

89
Q

What system allows for airflow adjustment into stairwell

A

Compensated

90
Q

What is high voltage defined as

A

600 volts or higher

91
Q

What are the 2 most common methods for cooling transformers

A

Air

Oil

92
Q

Air cooled transformers are known as

A

Dry

93
Q

Where are dry transformers designed for use in

A

Sprinklered rooms

94
Q

What is the fire rating for transformers protected by sprinklers

A

1 hr

95
Q

How many gallons is the day tank limited to

A

60

96
Q

What is the fire rating for transformers not protected by sprinklers

A

3 hr

97
Q

How far are draft curtains placed apart

A

Not more than 8 times the ceiling height

98
Q

What type of elevator is the top exit optional

A

Hydraulic

99
Q

When is a top exit provided on a hydraulic elevator

A

If the system has a manual lowering valve

100
Q

Top panels are not required on what elevators

A

Freight

101
Q

What is a special requirement for circular stairs

A

Small radius is equal to or greater than twice the widest part of the stair tread

102
Q

What is the primary safety hazard at conveyor penetration

A

Incomplete door or shutter closure

103
Q

How deep is the draft stop

A

18 in

104
Q

How are hydraulic elevators controlled

A

Hydraulic fluid

105
Q

What is the most common elevator in buildings over 6 stories

A

Traction

106
Q

What are elevator safeties designed to do

A

Stop a free falling car

107
Q

What elevators do not have car door locks

A

Passenger elevator

108
Q

How are metal lid vents opened

A

Manually
Fusible link
Detectors

109
Q

Where are smoke towers located

A

Periphery of the floor plan

110
Q

What is a limitation of a single injection system

A

All of the air pressure can flow out of the stairwell

111
Q

What system negates the primary limitation of the single injection system

A

Multipoint system

112
Q

What does low voltage equipment operate at

A

Less than 600 volts

113
Q

What do dry transformers step the voltage down to

A

120

114
Q

What is required for transformers containing PCB

A

A label

115
Q

Where are scissor stairs found

A

Airports
Malls
Convention
Cinema

116
Q

Where is the electric motor for passenger elevators located

A

On top of the car

117
Q

How are metal vents operated

A

By spring

118
Q

What stairs have a landing between floors

A

Return

119
Q

What are folding stairs held in place by

A

Coil/gas spring

Counter weights

120
Q

What is provided at the top of the escalator to provide vertical opening protection

A

Rolling shutter

Building Construction (6 decks)

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