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Building Construction Related To The Fire Service > 2 Structural Fire Resistance Building Classifications > Flashcards

2 Structural Fire Resistance Building Classifications Flashcards

1
Q

Fire resistance

A

The ability of structural assembly to maintain its load bank and structural integrity under fire conditions

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2
Q

Combustibility

A

Nature of the building structural system will impact the rate of fire growth

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3
Q

Fire resistance rating

A

Reading assigned to a material or an assembly after standardized testing by independent organization that identifies amount of time material or assembly of materials will resist a typical fire as measured on standard time temperature curve

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4
Q

In addition to classifying buildings by construction type building codes by

A

Their occupancy

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5
Q

In the case of walls petitions and ceilings fire resistance also means

A

The ability to act as a barrier to fire

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6
Q

True/false fire resistive construction is not prone to structural failure under fire conditions

A

True

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7
Q

Building codes will have requirements for fire resistance for these structural elements

A

Beams, columns, walls and partitions, floors and ceiling assemblies, roof and ceiling.

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8
Q

Building code will typically require the columns supporting floors and the fire was just a building the fire resistance rating of

A

Three hours

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9
Q

Walls enclosing a exit stairwell typically have a fire resistance rating of

A

One or two hours to protect the stairwell

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10
Q

There are three means by which the fire resistance of structural assemblies can be determined

A

Conducting standard fire resistance testing laboratory
Performing analytical calculations to determine the resistance to a standard fire test
Employing analytical structural fire engineering design methods based on exposure characteristics

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11
Q

The most commonly used method of determining fire resistance is

A

Laboratory test

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12
Q

The earliest known fire test on building materials were conducted in Germany

A

1884 to 1886

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13
Q

In the United States the first known fire test were conducted in

A

Denver Colorado 1890 with subsequent test in New York City 1896

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14
Q

NFPA 251

A

Standard method of tests for fire and durance building construction and materials

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15
Q

NFPA 251 is also designated as

A

ASTM E-119

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16
Q

What is the temperature curve in a fire resistance test furnace

A

1000° at five minutes, 1550° at 30 minutes 1700° at one hour, 1850° at two hours, 2000° at four hours, 2300° at eight hours

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17
Q

Because components are you there structural loadbearing or not the test results will be classified as

A

The bearing or non-non-bearing based on their intended use

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18
Q

The strengths and floor and ceiling assembly is affect the extent to which an assembly may

A

Rotate or expand exposed to temperatures affecting his ability to support a load

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19
Q

Structural fire systems test conducted they continue until

A

The specimen fails for the specified fire endurance for which the specimen being tested his reachEd

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20
Q

Primary points of failure for fire resistance test are

A

Failure to support and applied load, temperature increase on unexposed side of fall floor and roof of 250° above ambient temp
Passage of heat or flame through assembly enough to ignite cotton waste
Excessive temperature on steel numbers

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21
Q

Underwriters laboratory

A

Independent fire research testing lab that certifies equipment and materials

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22
Q

Failure point temperature on steel will depend on

A

How the steel is being used

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23
Q

Fire resistance rating for test specimen including fire doors and windows are in standard intervals of

A

15 minutes, 30 minutes, 45, one hour, 1.5 hour, two hours, three, four hour

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24
Q

Rated assemblies may perform differently in actual situations because

A

In the real world workmanship and materials encountered may vary

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25
Q

Fire stop

A

Solid materials used to prevent or limit vertical and horizontal spread of fire in hollow walls floors ceilings penetration of utility chases or fire rated assemblies

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26
Q

Fire rating test does not provide information on

A

Performance of object other than specified, evaluation to which assembly generates products of combustion, degree of limitation for the passage of smoke, fire behavior of joints between elements, measurement of flame spread over material surface, effect on fire endurance through openings in specified material

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27
Q

Joint systems for floor to wall and wall-to-wall connections are tested in accordance with

A

UL standard 2079 Standard for fire test of joint systems

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28
Q

Penetration of reading materials and building construction is a fire concerned because

A

It may not be properly fire stopped

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29
Q

Fire resistance directory

A

Directory that lists building assemblies that have been tested and given fire resistance rating’s published by UL

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30
Q

In 1997 American Society of civil engineers, and society of fire protection engineer’s, jointly developed standard calculation of fire resistance known as

A

ASCE/SFPE 29 Standard calculation methods for structural fire protection

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31
Q

Standard calculation methods for structural fire protection is limited to use wi

A

Structural steel, plain and reinforced concrete, timber and wood, concrete masonry, Clay masonry

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32
Q

The most commonly used method of satisfying building code requirements for structural fire resistance

A

NFPA 251 standard time temperature test

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33
Q

Noncombustible

A

In capable of supporting combustion under normal circumstances

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34
Q

Most commonly used test for determining combustibility

A

ASTM E 136 Standard test method for behavior of materials in a vertical tube furnace at 750°C

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35
Q

In the fields a fire protection in building code and code enforcement buildings are classified in what five groups

A 
Type I, fire resistive
Type ii, noncombustible for protected noncombustible
Type III, exterior protected (masonry)
Type iv, heavy timber
Type v, wood frame
36
Q

The classifications of building construction type are based on two attributes

A

Fire resistance and combustibility

37
Q

NFPA 220

A

Standard on types of building construction

38
Q

Further division of each type of building classification is done in which manner

A

Subclassification designated by three digit number code

39
Q

The first digit in building classification subclassification means what

A

First digit refers to the fire resistance rating and hours of exterior bearing walls

40
Q

What does the second did you mean for subclassifications of building type

A

Second digit refers to fire resistance rating of structural frames or columns and garters that support load more than one floor

41
Q

What does the third digit mean in the subclassification of building types

A

Third digit indicates the fire resistance rating of the floor construction

42
Q

What do building code to use to establish limits on the height an area of buildings

A

Use the type of construction and building occupancy in connection with sprinkler systems and separations

43
Q

Generally type I building’s, bearing walls, columns, and beams are required to have a fire resistance rating of

A

2 to 4 hours depending on the code and construction classification

44
Q

Type I floor construction is required to have fire resistance of

A

Two or three hours

45
Q

Type i roof deck and construction supporting roof must have fire resistance of

A

One or two hours

46
Q

Interior partitions and closing stairwells and hallways are required to be fire resistant in type I buildings for

A

Usually one or two hours

47
Q

Partitions that separate occupancies or tenants and type I buildings and also required to be fire resistant when

A

depending on firecode

48
Q

Some building codes contain a provision to omit the fire resistive rating for your roof construction and type one for some occupancies when the roof is

A

More than 20 feet above the floor

49
Q

Type I. The fire resistive compartments provided by partitions and floors tend to

A

Slow the spread of fire through a building

50
Q

Building code usually permit limited use of combustible materials type I construction typically permitted are

A

Roof covering, interior floor finish, interior wall finishing trim, doors and frames, window sashes and frames, platforms, nailing and furring, light transmitting plastics, restricted foam plastic

51
Q

Two most common methods of constructing type I buildings are

A

Using reinforced concrete or protected steelframe

52
Q

In a steel frame building, unprotected steel has no fire resistance. In order to be used in type I construction it must

A

Be protected by insulating material of varying thicknesses to achieve different ratings

53
Q

Type ii construction can either be

A

Protected or unprotected

54
Q

Type ii A structural components required to have what for the fire resistance rating

A

One hour

55
Q

In type II B rating structural components are

A

Unprotected

56
Q

Building code allows the use of combustible material in type II Similar to

A

Those and type I construction

57
Q

Unprotected noncombustible building and collapse under fire conditions point at which unprotected members will fail depends on

A

Ceiling height, size of unprotect steel members, intensity and duration of fire

58
Q

Protected noncombustible construction provides a degree of structural fire protection similar to

A

Type one depending on fire resistance provided

59
Q

Interior structural members of type III construction may be

A

Protected or unprotected

60
Q

Type III a construction is required to have a fire resistance rating for interior members of

A

One hour

61
Q

Type III b construction has what requirements for interior structural member fire resistance

A

No fire resistance requirement

62
Q

Type III construction is permitted to have with dimension smaller than type iv construction using typically what size beam joist

A

2 x 10”

63
Q

Type iv construction the minimum dimensions for floor joist construction

A

6 x 10”

64
Q

Primary fire concern and type III construction is

A

Void spaces between floor and ceiling joists and between studs and partition walls

65
Q

Type IV construction is similar to type III construction in that

A

Exterior walls are masonry and structural members are combustible

66
Q

Two important distinctions between type III and type IV construction

A

Type iv Structural beams are solid or laminated wood larger than type III
Concealed spaces are not permitted between structural members and type IV construction

67
Q

Primary fire hazard IN type IV construction

A

Fuel load because of structural members in addition to building contents, old oils and residues in floor

68
Q

Many type V structures are required to have what fire resistance for structural members

A

One hour usually five protecting structural members with gypsum

69
Q

Fundamental fire hazard in type V

A

Extensive combustible void spaces

70
Q

Light frame construction

A

Method for construction of wood frame buildings replace the use of heavy timber wood framing

71
Q

Type v May have what restrictions because of exposure thread to adjacent structures

A

Maximum height restrictions

72
Q

Light frame construction is really what

A

Stick built

73
Q

Fire load

A

Amount of fuel within compartment expressed in pounds per square foot obtained by dividing amount of fuel by the floor area indicating maximum heat release. also known as fuel load

74
Q

Ordinary combustible’s release how many BTUs per pound

A

7000 to 8000 BTU per pound

75
Q

Occupancy with fire load of 10 pounds per square foot of ordinary construction would produce how many BTU per square foot

A

70,000 to 80,000 BTU per square foot

76
Q

Structural load and fire load can be different because

A

Building contents would be fire load, and structural contents with the structural load

77
Q

The occupancy classification assigns building occupancies into

A

Groups broadly similar fire risks

78
Q

International building code, IBC, classifications of 10 major occupancies

A 
Assembly, Group a 
Business, group B
Educational, group E
Factories, group F
High hazard, group H
Institutional, group I
Mercantile, group M
Residential, group R
Storage, group S
Utility and miscellaneous, group U
79
Q

Occupancy types can be further divided into subgroups using

A

A single digit after the letter designation

80
Q

For subgroups of residential occupancies

A

R1 primarily transient occupancy including hotels and motels
R2 occupancy is primarily permanent occupants more than two dwelling units apartments dormitories
R3. Permanent occupants not more than two dwelling units, adult faculties accommodations for five or fewer persons less than 24 hours
R4. Occupancy’s assisted-living 5 to 16 occupant

81
Q

Five subgroups of assembly occupancies

A

A one, assembly occupancies fixed seating, theater concert
A two, assembly used for consuming food and drink, restaurant
A3. Used for worship recreation or amusement
A4 intended for viewing indoor sport events
A5. Outdoor activities such as bleachers grandstand stadium

82
Q

IBC, total amount of subgroups within 10 major occupancy classification’s

A

26

83
Q

NFPA 500

A

Building construction and safety code

84
Q

NFPA 101

A

Life safety code

85
Q

NFPA 5000, NFPA 101, 12 major occupancy classification’s

A

Assembly, educational, daycare, healthcare, ambulatory healthcare, detention center, residential, residential board and care, Mercantile, business, industrial, storage

86
Q

To illuminate conflicts of mixed occupancies what is required

A

Fire resistive separations between various occupancy varying one through three hours

Building Construction Related To The Fire Service (15 decks)

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