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Building Construction > Ch 12 > Flashcards

Ch 12 Flashcards

1
Q

What is the building code definition of a high rise

A

75ft or more

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2
Q

What is the fire department definition of a high rise

A

Beyond affective reach of fire equipment at street level

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3
Q

What are the 2 developments that made high rise buildings possible

A

Steel construction

Elevators

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4
Q

What is the most obvious feature of a high rise

A

Building height

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5
Q

Buildings exceeding how many stories are common place

A

60

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6
Q

The earliest high ride buildings had how many stories

A

10-12

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7
Q

What did the first building codes require to be enclosed

A

Stairs

Elevators

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8
Q

What are modern buildings constructed without

A

Operable windows

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9
Q

What type of construction do high ride buildings use

A

Fire resistant

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10
Q

How long is the fire rating for the structural frame

A

2 or 3

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11
Q

How long is the fire rating for floors

A

2 hrs

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12
Q

Reinforced concrete uses what type of floors

A

Concrete slab

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13
Q

What type of floors do steel frame buildings use

A

Structural concrete over corrugated steel

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14
Q

What type of construction provides a high degree of structural strength

A

Fire resistant

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15
Q

How was fire protection provided in early high rises

A

Standpipe

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16
Q

What is a crutial aspect of fire protection in a high rise

A

Standpipes

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17
Q

Where are standpipe risers and hose valves located

A

Stairwells

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18
Q

What is one unavoidable problem with sprinkler systems

A

Variation of pressure

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19
Q

What NFPA mandates the use of pressure reducing valves

A

14

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20
Q

Sprinklers and stand pipes are supplied by

A

Fire pumps

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21
Q

Where are fire pumps located

A

Basement

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22
Q

What is required in seismic zones

A

On site water supply

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23
Q

What is usually the onsite water water supply

A

Tank

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24
Q

How are voice alarm systems activated

A

Automatically

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25
Q

How are voice evacuation systems zoned

A

But floor

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26
Q

What is a unique alarm feature in a high rise

A

2 way communication

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27
Q

What system is required by state or local code

A

Mechanical smoke removal

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28
Q

Where do code not require smoke to be removed from

A

Floor of origin

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29
Q

Above how many feet do codes require smoke proof exit enclosures

A

75

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30
Q

What approach vents the fire floor and pressurizes the floors above and below the fire

A

Pressure sandwich

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31
Q

Where is the fire command center typically located

A

1st floor

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32
Q

What is the fire rating for the command center

A

1 hr

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33
Q

What floor plans are hotels and office building designed with

A

Central core

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34
Q

What shafts are required to be enclosed

A

Vertical

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35
Q

What are HVAC systems in high rise designed to manage

A

Products of combustion

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36
Q

What is required when hoistway and elevator rooms are protected by sprinklers

A

Shunt trip

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37
Q

Only consider using elevators if the fire is above what floor

A

5

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38
Q

Above how many vertical feet is recall mandatory in all passenger elevators

A

Above 25

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39
Q

What type of elevators are not required to have recall

A

Freight

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40
Q

What is phase 1 designed to do

A

Protect the life of civilians

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41
Q

What elevators are required to have phase 2 operation

A

New

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42
Q

What prevents the door from closing if a person or smoke is in the doorway

A

Electric eye

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43
Q

What phase is the electric eye disabled

A

Phase 2

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44
Q

Where are the car controls only operable from

A

The car

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45
Q

How many emergency exits should there be in upper floors

A

2 per side

46
Q

What direction is the primary access for underground buildings

A

Horizontal

47
Q

What is the greatest single challenge of controlling underground fires

A

Smoke and heat ventilation

48
Q

What type of sprinklers are required for underground buildings

A

Automatic

49
Q

What is the most significant advantage of membrane structures

A

Large interior space

50
Q

How many types of structures use membranes to form the shape

A

2

51
Q

What are air inflated structures used for

A

Shops

Weather protection

52
Q

Air inflated structures are limited to how many stories

A

1

53
Q

What structures are used more commonly that air inflated structures

A

Membrane

54
Q

Where are FD hose outlets required in malls

A

Stairs
Entrance
Passageways

55
Q

Shopping malls are typically how many stories

A

1-3

56
Q

What is an advantage of covered malls

A

Exercise or shop in comfortable environment

57
Q

Shopping malls are mainly what type of construction

A

Type 2 or 5

58
Q

Current codes do not allow malls to be made out of

A

Wood

59
Q

Current codes require malls to have what amount of sprinklers

A

Full

60
Q

How long is the fire resistant separation between stores

A

1 hr

61
Q

What malls are not required to have smoke control systems

A

1 story

62
Q

Above how many stories are smoke control systems required in malls

A

3

63
Q

What type of sprinkler system do newer correctional facilities have

A

Automatic

64
Q

What do fire protection and life safety vary depending on in detention centers and correctional facilities

A

Level of restraint

65
Q

Automatic sprinkler system address what concept

A

Shelter in place

66
Q

What is the design of institutional sprinklers

A

Low profile

Tamper resistant

67
Q

How many compartments are located on each floor with shelter in place

A

1 or more

68
Q

How many floors do atriums extend through

A

2 or more

69
Q

What are atriums popular design features

A

Ventilation

Light

70
Q

What type of sprinklers do atriums have

A

Automatic

71
Q

Atriums have fire rated construction for how many hrs

A

1

72
Q

Codes eliminate fire ratings for atriums with how many stories or more

A

3

73
Q

Where is the exhaust capacity calibrated

A

Height Above the highest walking level

74
Q

Above how many feet are sprinkler systems waived for atriums

A

55

75
Q

What type of pressure is created by an explosion

A

Outward

76
Q

What is the outward pressure referred to as

A

Blast wave

77
Q

What occupancies are structural designs made to reduce the damage from an explosion

A

Flammible liquids

Combustible dusts

78
Q

How can structural damage from an explosion be mitigated

A

Containment

Venting

79
Q

What is the max pressure from and explosion

A

10xs the atmospheric

80
Q

What is used to quickly relieve the pressure from an explosion

A

Explosion vents

81
Q

How are vent closures designed to operate

A

Low internal pressure as possible

82
Q

Explosion vents should not weigh more than how many lbs

A

3

83
Q

What material is used for explosion vents

A

Corrugated steel

84
Q

When is the path of pressure determined

A

Preincident walk through

85
Q

What is the area of refuge designed to accommodate

A

1 or 2 wheelchairs

86
Q

What type of sprinklers and standpipe risers do area of refuge use

A

Automatic

87
Q

What are logical areas for areas of refuge

A

Elevator lobbies

Exit stair landings

88
Q

What communication system is required for areas of refuge

A

2 way

89
Q

What is the smoke barrier rating for areas of refuge

A

1 hr

90
Q

How are racks usually arranged

A

Back to back

91
Q

What type of rows are back to back racks

A

Double

92
Q

Racks are usually wider than how many feet

A

12

93
Q

Isles are usually narrower than how many ft

A

3.5

94
Q

What is the height range for storage racks

A

12 to over 100ft

95
Q

What are the 2 modes new ceiling sprinklers operate in

A

Control

Suppression

96
Q

What phase is the emergency stop button active

A

2

97
Q

What does horizontal fire extension depend on

A

Partitions that subdivide the floor

98
Q

Limited access buildings have what kind of sprinklers

A

Full

99
Q

How wide are mall walkways

A

Min of 20

100
Q

What NFPA is for valves

A

14

101
Q

What phase is the emergency stop button inoperable

A

1

102
Q

What does the membrane weigh that is used on air supported buildings

A

Only a few oz per sq ft

103
Q

What explosion produces no chemical reaction

A

Boiler

104
Q

What does the damage to a building from an explosion depend on

A

Pressure
Rise
Duration

105
Q

Who long is the fire rating between a day care and restuarant

A

2 hrs

106
Q

What phase is the electric eye disabled

A

2

107
Q

What is a large well known perimeter store

A

Anchor store

108
Q

What roof has a degree of slope similar to a Gable roof

A

Hip

109
Q

What are elevator cables made out of

A

Flat Polyethylene coated steel belts

110
Q

What hoistways are not required to be enclosed

A

Atrium

Building Construction (6 decks)

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