Chapter 2

Question 1

Basic Building Classifications (5)

Answer 1

Type 1 Fire resistive

Type 2 Noncombustible or protected noncombustible

Type 3 Exterior Protected (Masonry)

Type 4 Heavy timber

Type 5 Wood Frame

Question 2

NFPA 220 is

Answer 2

Each classification is designated by three digit number code

First digit= fire resistance rating in hours of exterior bearing walls

Second digit= Fire resistance rating of structural frames or columns and girders that support loads of more then one floor

Third Digit= Fire resistance rating of the floor construction

Question 3

Type 1 Construction how is it classified

Answer 3

Is classified by the presence of non combustible structural components that have fire resistance rating within a specified range

Question 4

5 Examples of the Variation in fire resistance by application include

Answer 4

Bearing walls, columns and beams- Two to four hours as specified by the local code and the construction classification

Floor Construction- Two or three hours

Roof Deck and construction supporting the roof- One to two hours

Interior partitions enclosing stairwells and corridors- as specified by the local code usually one or two hours

Partitions separating occupancies or tenants - as specified by the local code

Question 5

Type 2 may omit the fire resistive rating for a roof construction when

Answer 5

The roof is more than 20 feet above the floor

Question 6

Type 2-A requires that

Answer 6

Structural components have one- hour fire resistance

Question 7

Type 2-B Unprotested allows

Answer 7

Structural components to remain unprotected

Question 8

Type 3- Interior structural components that are permitted to be partially or wholly combustible include (5)

Answer 8

Walls

Columns

Beams

Floors

Roofs

Question 9

Fire Concern with type 3 are

Answer 9

Concealed space

Question 10

Concealed spaced in type 3 Construction must have

Answer 10

Appropriate Fire stops

Question 11

Two Important distinctions between type 3 and type 4

Answer 11

In type 4 construction the beams columns floors and roofs are made of solid or laminated wood with dimensions greater than in type 3 construction

Concealed spaced are not permitted between structural components in type 4 construction

Question 12

Type 4 Heavy timber construction requires minimum nominal dimensions of

Answer 12

6x10 inch for floor construction

Question 13

Fire Hazards of Type 4 (2)

Answer 13

Relatively large amount of fuel present in structural supports

May have traces of oils and residues from previous industrial use

Question 14

Many Type 5 Structures are required to have

Answer 14

1 hour fire resistance for structural components

Question 15

The fundamental problem with type 5 construction is

Answer 15

Presence of extensive concealed voids

Question 16

Fuel Load is

Answer 16

The total quantity of combustible material in a compartment

Question 17

Fire Load is

Answer 17

The Product of the weight of the combustibles multiplied by their heat of combustion expressed in pounds per square foot (kg/m2)

Question 18

Fire load may not directly translate

Answer 18

Into equivalent structural load

Question 19

5 Properties of materials for fire resistance

Answer 19

Combustibility

Thermal conductivity

Chemical composition

Density

Dimensions

Question 20

4 Primary points of failure for the test are

Answer 20

Failure to support an applied load

Temperature increase on the unexposed side of wall floor and roof assemblies of 250 degrees above ambient temperatures

Passage of heat or flame through the assembly sufficient to ignite cotton waste

Excess temperature on steel members

Question 21

E-119 test is

Answer 21

The only Standardized test method currently universally accepted by building codes

Question 22

UL standard 2079 is

Answer 22

Standard for fire test of joint systems.