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Building Construction > Ch.12 > Flashcards

Ch.12 Flashcards

1
Q

Model building codes define a high rise building as being more than ___ feet in height ?

A

75 feet

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2
Q

The fire protection definition of a high rise building is more practical , any building with occupied stories beyond the ________ reach of fire equipment located at the street level?

A

Effective

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3
Q

A high rise building may be defined as exceeding __ or __ feet in height at the roof?

A

80-100 feet

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4
Q

Other jurisdictions may define a high rise building as exceeding ___ feet or __ stories in height because of limitations in fire fighting resources?

A

50 feet or 5 stories

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5
Q

Two developments that made high rise buildings possible and practical at the end of the 19th century?

A

Elevators and the use of steel frame construction

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6
Q

Buildings exceeding ___ stories have become commonplace ?

A

60 stories

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7
Q

The earliest high rise buildings were rarely more than __ or __ stories ?

A

10 to 12 stories

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8
Q

The first model building codes introduced in the _____ and _____ required stairs and elevators to be enclosed ?

A

1920s and 1930s

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9
Q

Typically model building codes require __or __ hour fire resistance for the structural Frame of a high rise building ?

A

2 or 3 hours

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10
Q

A valve installed at standpipe connection that is designed to reduce the amount of water pressure at that discharge to a specific pressure, usually 100psi?

A

Pressure reducing valve

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11
Q

In buildings up to __ or __ stories , it might be possible to advance hose lines manually up stairwells?

A

9 or 10 stories

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12
Q

Sprinkler and standpipe systems are typically supplied from the same _____________ ?

A

Vertical riser

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13
Q

Building codes have routinely required that high rise buildings be equipped with automatic sprinkler systems as well as standpipe systems since the mid ______?

A

1970s

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14
Q

All model building codes require smoke proof exit enclosure in stairs serving floors ___ feet or higher?

A

75 feet

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15
Q

Many high rise buildings , especially office buildings and hotels are designed with a __________ floor plan?

A

Central core

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16
Q

A circuit breaker used as a safety device in an elevator system, when electrical current surges the device disconnects the power source?

A

Shunt trip

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17
Q

The elevator code requires a shunt trip where the elevator hoistwsy or elevator room is protected by _____________?

A

Automatic sprinklers

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18
Q

Only consider using an elevator if the fire is above the ____ floor?

A

5th floor

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19
Q

Emergency operations mode for elevators , recalls the car to the terminal floor lobby or another floor as specified and opens the doors?

A

Phase 1 operation

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20
Q

Codes contain mandatory provisions for the recall phase 1 operation of all passenger elevators with vertical travel greater than ____ feet in the event of a fire ?

A

25 feet

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21
Q

Phase 1 operation is designed to ________ the deaths of civilians who may find themselves in an elevator that is called to the fire floor as happened in high rise fires in the 1970s?

A

Prevent

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22
Q

The requirement for recall does not apply to ______ elevators?

A

Freight

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23
Q

Emergency operating mode for elevators , allows emergency use of the elevator with certain safeguards and special functions?

A

Phase II operation

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24
Q

The _____________ which prevents the doors from closing if there is a person or smoke in the doorway , is disabled during phase II operations?

A

Electric eye safety

25
Q

Limited access buildings constrict firefighter ability to quickly and efficiently ventilate the building , as a result building codes generally require that these buildings be fully ________ ?

A

Sprinklered

26
Q

Underground buildings may have occupancy areas ___ feet or more lower than their primary exit?

A

30 feet

27
Q

Probably the greatest single challenge in controlling fires in underground buildings comes from the difficulty in venting _______and ______?

A

heat and smoke

28
Q

Smoke proof enclosures are now required for buildings with levels more than ___ feet below the level of exit discharge?

A

30 feet

29
Q

In underground buildings the maximum available fire resistance protection is typically ___ hours , therefor fires exceeding that are a serious threat?

A

4 hours

30
Q

Underground buildings may be grouped with __________ buildings when it comes to building codes?

A

Windowless buildings

31
Q

Where buildings have floor levels more than___ feet  below the level of exit discharge, separation of each level into two approximately equal size compartments may be required?

A

60 feet

32
Q

A _______ structure has an exterior skin of thin, waterproof fabric , often vinyl coated polyester material ?

A

Membrane structure

33
Q

What are the 2 types of membrane structures?

A

Air supported
Air inflated

34
Q

The amount of ___________ required to maintain these types of structures is a small fraction above the ambient atmosphere pressure?

A

Air pressure

35
Q

______________ feature a covered space with a fully open floor plan , maybe used for seasonal pop up shops or as temporary structures for weather protection while constructing a building inside?

A

Air inflated structures

36
Q

Membrane structure that is fully or partially held up by interior air pressure , may be maintained in place over a long duration?

A

Air supported structure

37
Q

Freestanding structure that uses suspension cables for support?

A

Cable membrane structure

38
Q

Structure supported primarily by a frame or skeleton rather than by load bearing walls?

A

Frame membrane structure

39
Q

_________________ are supported by external cables fastened to masts , the structural supports of this type of construction resemble the organization found in a suspension bridge?

A

Cable membrane structure

40
Q

_______________ feature a rigid frame with a tensioned membrane covering , usually with internal columns?

A

Frame membrane structure

41
Q

Many states use ______ to store road salt near highways ?

A

Frame structures

42
Q

Building codes require that mall walkways be a minimum of ___ feet wide ?

A

20 feet

43
Q

Malls are usually designed with one or more large , well known perimeter stores that are known as _________?

A

Anchor stores

44
Q

Codes require individual stores within a shopping mall to have __ hour fire resistive separations from each other ?

A

1 hour

45
Q

Smoke control systems may be required in covered mall buildings with ___ or more stories?

A

3

46
Q

Open area in the center of a building , extending through two or more stories , similar to a courtyard but usually covered by a sky light to allow natural light and ventilation to interior rooms?

A

Atrium

47
Q

The building codes have a basic requirement that an atrium be enclosed with __ hour rated construction or a combination of glass and automatic sprinklers?

A

1 hour

48
Q

Current codes calibrate the exhaust capacity to maintain the smoke layer at a specified height above the _____ walking level serving the exit system?

A

Highest

49
Q

Some codes now waive the requirements for sprinklers where ceilings of atriums are more than ____ feet above the floor?

A

55 feet

50
Q

An ____________ can be defined as an event that produces a rapid release of energy ?

A

Explosion

51
Q

The maximum pressure reached during an explosion may exceed ____ times the atmospheric pressure ?

A

10 times

52
Q

Ideally explosion vent panels should not weigh more than ___ pounds per sq foot ?

A

3 lbs

53
Q

Several different types of materials are used for explosion vents , such as _________ or __________?

A

Lightweight corrugated steel or aluminum sheets

54
Q

A _____ and _____ free environment is essential to protect occupants while they are awaiting rescue?

A

Smoke and heat

55
Q

The typical smoke barrier consists of a minimum __ hour rated enclosure?

A

1 hr

56
Q

Areas of refuge must be provided with some type of ____________________ connected to a constantly attended location ?

A

Two way communication system

57
Q

Warehouses may have multiple rows of racks wider than ___ feet or with aisles narrower than ____ feet?

A

12 feet
3.5 feet

58
Q

Storage racks can range from a total height of __ feet to an excess of ___ feet ?

A

12 feet
100 feet

Building Construction (14 decks)

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