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Flashcards in 5 Fire Behavior And Building Construction Deck (108)
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1

Exposed interior surfaces of buildings including but not limited to fix your movable walls and partitions columns and ceilings commonly refers to finish on walls and ceilings but not floor coverings

Interior finishes

2

Building code usually exclude surface treatment such as paint and wallpaper no thicker than

1/28 "

3

Degree to which fire can spread over the surface of a material is technically referred to as the

Surface burning characteristics of the material

4

Speed of flame spread over interior finishes influenced by factors such as

Composition of material
Ventilation
The shape and space in which the material is installed
Whether the finish material is applied to ceiling or wall

5

Within product, quarter inch or less, will propagate flame faster one attached to studs with airspace behind it then when attached directly to more solid material such as gypsum. Building codes therefore require

Those materials with faster burning rights to be installed over noncombustible surface

6

Three classes of interior finishes

A, B, C

7

Class a material interior finish

0 through 25 flame spread rating are required in vertical exits of most occupancies

8

Interior finish class B material

26-75 flame spread rating required and hallways that provide exit access

9

Class C interior finish material

76-200 flame spread rate

10

Class a B or C interior finish materials may be required in other rooms and spaces depending on occupancy rooms of healthcare in assemblies for example will require

Either class a or B interior finish

11

HHR heat release rate

Total amount of heat produced or released to the atmosphere from the convective lift fire phase of a fire per unit mass of fuel consumed per unit time

12

A greater heat release rate results in faster developing fire. The faster the available fuel burns the

Greater the heat released rate will be

13

Flame spread rating

Numerical rating assigned to a material based on the speed and extent to which a flame travels over its surface

14

Steiner. Tunnel test

Unofficial name for the test used to determine the flames spread ratings of various materials

15

Assembly

All components or manufactured parts necessary for and fitted together to form a complete machine structure or system

16

Most commonly used method for evaluating surface burning characteristics

Steiner tunnel test

17

Interior finishes are tested to derive several measures of a materials flammability:

Flame spread rating and smoke developed rating

18

Steiner tunnel test is also identified as

ASTM standard E84, UL 753, NFPA 225, standard method of test of surface burning characteristics of building material

19

Flame spread rate of gypsum wallboard

10-15

20

Flame spread rate of treated Douglas fir plywood

15-60

21

Flame spread rating of mineral acoustical tile

15-25

22

Walnut faced plywood flame spread rating

171-260

23

Flame spread rating veneered woods

Approximately 515

24

To derive the numerical flame spread rating what is used as a baseline

Asbestos cement board and red Oak flooring

25

True/false Flame spread rating test is a means of comparing service flammability to standard materials under control test. It is not an absolute measure for fire spread

True

26

The tunnel test is not apply to which type of coverings

Floor coverings

27

Toxicity

Ability of a substance to do harm within the body

28

Volatility

Ability of a substance to vaporize easily at a relatively low temperature

29

What test is used to determine smoke developed rating

Tunnel test

30

A measure of the relative visual obscurity, determined by photo electric light cell, created by smoke from tested material

Smoke developed rating