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Flashcards in 2 Structural Fire Resistance Building Classifications Deck (86)
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1

Fire resistance

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

2

Combustibility

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

3

Fire resistance rating

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

4

In addition to classifying buildings by construction type building codes by

Their occupancy

5

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

The ability to act as a barrier to fire

6

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

True

7

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

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

8

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

Three hours

9

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

One or two hours to protect the stairwell

10

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

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

11

The most commonly used method of determining fire resistance is

Laboratory test

12

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

1884 to 1886

13

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

Denver Colorado 1890 with subsequent test in New York City 1896

14

NFPA 251

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

15

NFPA 251 is also designated as

ASTM E-119

16

What is the temperature curve in a fire resistance test furnace

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

17

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

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

18

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

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

19

Structural fire systems test conducted they continue until

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

20

Primary points of failure for fire resistance test are

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

21

Underwriters laboratory

Independent fire research testing lab that certifies equipment and materials

22

Failure point temperature on steel will depend on

How the steel is being used

23

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

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

24

Rated assemblies may perform differently in actual situations because

In the real world workmanship and materials encountered may vary

25

Fire stop

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

26

Fire rating test does not provide information on

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

27

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

UL standard 2079 Standard for fire test of joint systems

28

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

It may not be properly fire stopped

29

Fire resistance directory

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

30

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

ASCE/SFPE 29 Standard calculation methods for structural fire protection