Chapter 9: Noncombustible Construction

Question 1

1:  What is the prevalent material of choice for noncombustible buildings? 
 A: Reinforced concrete 
 B: Steel 
 C: Concrete 
 D: Masonry

Answer 1

B: Steel

Question 2

2: Which of the following would be the most important “heat” to be removed from a building?
A: Heat leaving the structure
B: Heat being evolved from contents that are burning
C: Heat being absorbed by contents or structural elements that will be ignited or caused to fail
D: Radiant heat

Answer 2

C: Heat being absorbed by contents or structural elements that will be ignited or caused to fail

Question 3

3:  What is the fire departments heat removal medium? 
 A: Prefire planning 
 B: Fire detection systems 
 C: Sprinkler system 
 D: Water

Answer 3

D: Water

Question 4

4:  Bars can be made in which of the following shapes? 
 A: Plates 
 B: Square 
 C: Round 
 D: All of the above

Answer 4

D: All of the above

Question 5

5:  Which of the following is not a common wall material found in steel-framed buildings? 
 A: Matched lumber 
 B: Cement-asbestos board 
 C: Aluminum 
 D: Masonry walls

Answer 5

A: Matched lumber

Question 6

6:  Which of the following materials is noncombustible, but has a low melting point and little mass per unit of area?  
 A: Matched lumber 
 B: Cement-asbestos board 
 C: Aluminum 
 D: Masonry

Answer 6

C: Aluminum

Question 7

7:  The lighter the steel, the less\_\_\_\_\_\_\_\_\_\_\_\_\_\_. 
 A: combustibility 
 B: fire resistance 
 C: durability 
 D: resilience

Answer 7

B: fire resistance

Question 8

8:  What is a principal variable in terms of how fast the fire temperature is achieved in steel? 
 A: The weight of the steel unit 
 B: The mass of the steel unit 
 C: The conductivity of the steel unit 
 D: Both A and B

Answer 8

D: Both A and B

Question 9

9:  A bar joist will generally fail within how many minutes if exposed to fire? 
 A: 4 
 B: 5 
 C: 7 
 D: 9

Answer 9

C: 7

Question 10

10:  In what year did the McCormick Place fire occur? 
 A: 1947 
 B: 1956 
 C: 1967 
 D: 1976

Answer 10

C: 1967

Question 11

MATCHING
Beams set at right angles to trusses or roof rafters to provide support
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 11

6. Purlins

Question 12

MATCHING
Embedded into the surface
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 12

5. peened

Question 13

MATCHING
Void space made by utilizing deep parallel-chord trusses
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 13

4. Interstitial space

Question 14

MATCHING
Members with a Z-shaped cross section
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 14

10. Zee

Question 15

MATCHING
A tee where the end of a cutoff is thickened
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 15

2. Bulb

Question 16

MATCHING
Upright partition that divides a ship into compartments
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 16

3. Bulkhead

Question 17

MATCHING
A horizontal beam that ties rows of soldier beams together
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 17

9. Waler

Question 18

MATCHING
Diagonal columns that brace an entire structure
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 18

7. Rakers

Question 19

MATCHING
Steel structural member rolled in cylindrical shapes
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 19

8. Tube

Question 20

MATCHING
Forms a long-span system used as floor supports
1. Bar Joist
2. Bulb
3. Bulkhead
4. Interstitial space
5. peened
6. Purlins
7. Rakers
8. Tube
9. Waler
10. Zee

Answer 20

1. Bar Joist

Question 21

MULTIPLE CHOICE
Steel's compressive strength is \_\_\_\_\_\_\_ its tensile strength.
A. greater than
B. less than
C. equal to
D. not related to

Answer 21

C. equal to

Question 22

MULTIPLE CHOICE
Steel tendons used for tensioned concrete can fail at what temperature?
A. 500 degrees F
B. 700 degrees F
C. 800 degrees F
D. 900 degrees F

Answer 22

C. 800 degrees F

Question 23

MULTIPLE CHOICE
Atria roofs above \_\_\_\_\_\_\_\_\_ fet may be given an exemptionfrom protection of the steel.
A. 40
B. 55
C. 75
D. 90

Answer 23

B. 55

Question 24

MULTIPLE CHOICE
Water supplies for spray systems designed to protect steel supports for flammable liquid fires are calculated on a requirement of \_\_\_\_\_\_\_\_\_\_\_\_\_\_ gallon(s) per minute.
A. 0.25
B. 0.5
C. 0.75
D. 1

Answer 24

A. 0.25

Question 25

``` MULTIPLE CHOICE Rigid frames can provide clear spans of about _______ feet. A. 100 B. 125 C.150 D. 175 ```

Answer 25

A. 100

Question 26

``` MULTIPLE CHOICE Which material is noncombustible but disintegrates rapidly in a fire? A. Aluminum B. Glass-fiber reinforced plastics C. Cement asbestos board D. Steel ```

Answer 26

A. Aluminum

Question 27

MULTIPLE CHOICE All of the following are characteristics of steel, EXCEPT: A. consistency of its structural characteristics B. strength C. inability to elongate D. ability to be connected to other structural elements

Answer 27

C. inability to elongate

Question 28

``` MULTIPLE CHOICE All of the following are types of girders, EXCEPT: A. box girder B. lattice girder C. spandrel girder D. plate girder ```

Answer 28

B. lattice girder

Question 29

``` MULTIPLE CHOICE Buildings in which the roof holds the tilt-up concrete wall panels in place are an example of which type of construction? A. High-rise framing construction B. Ordinary construction C. Prefabricated construction D. Tilt-slab construction ```

Answer 29

D. Tilt-slab construction

Question 30

``` MULTIPLE CHOICE Steel expands from 0.06 to 0.07 percent in length for each ________ rise in temperature. A. 1 degree F B. 10 degrees F C. 100 degrees F D. 1000 degrees F ```

Answer 30

C. 100 degrees F

Question 31

FILL-IN-THE-BLANK | Elongating steel exerts a/an ______ force against the structurethat restrains it.

Answer 31

lateral

Question 32

FILL-IN-THE-BLANK The better a building is tied together to resist wind load, the more likely it is to suffer ________collapse due to fire distortion.

Answer 32

progressive

Question 33

FILL-IN-THE-BLANK | Interstitial space comes from a/an _______ term.

Answer 33

medical

Question 34

FILL-IN-THE-BLANK | Cement-asbestos board is typically used for ______ construction.

Answer 34

friable

Question 35

FILL-IN-THE-BLANK | Aluminum has a/an ________melting point.

Answer 35

low

Question 36

FILL-IN-THE-BLANK | During a fire, the steel structure in a building should be kept _______.

Answer 36

cool

Question 37

FILL-IN-THE-BLANK | The weight of steel sections is usually given per running _________.

Answer 37

foot

Question 38

FILL-IN-THE-BLANK | Very deep parallel-chord trusses have been used as ________ beams in hospitals.

Answer 38

floor

Question 39

FILL-IN-THE-BLANK | To achieve a/an ________ roof, the framing may consists of columns and beams with triangular trusses.

Answer 39

peaked

Question 40

FILL-IN-THE-BLANK Because of the requirement for underground parking, building excavations are being made much ________ than in previous years.

Answer 40

deeper

Question 41

TRUE/FALSE | Non-combustible construction has moderate to heavy fire resistance.

Answer 41

False

Question 42

TRUE/FALSE | The modulus of elasticity is high on steel.

Answer 42

True

Question 43

TRUE/FALSE | Steel is a bad thermal conductor.

Answer 43

False

Question 44

TRUE/FALSE | Today's high-rise construction commomly uses glass and metal panels.

Answer 44

True

Question 45

TRUE/FALSE | Grease fires in ducts often extend to the structure by conduction

Answer 45

True

Question 46

TRUE/FALSE | Unprotected steel structures do not have a potential for early collapse.

Answer 46

False

Question 47

TRUE/FALSE | A metal-deck roof fire can sometimes be fought from the underside.

Answer 47

True

Question 48

TRUE/FALSE Buildings with steel units tied together may undergo torsional or eccentric loads during a fire that exceed their capacity.

Answer 48

True

Question 49

TRUE/FALSE | A small mass of steel can carry heavy loads.

Answer 49

True

Question 50

TRUE/FALSE | The method of wind bracing in a building is a serious concern to fire fighters after the building is completed.

Answer 50

False

Question 51

SHORT ANSWER | What are the three classes of calculated risks outlined in the text?

Answer 51

All of the following . Financial or economic . Engineering . Forget it

Question 52

SHORT ANSWER | Steel buildings can be broken down into four types of protection; what are they?

Answer 52

``` All of the following: . Unprotected . Dynamically protected . Passively protected . Passive/dynamic combination protection ```

Question 53

SHORT ANSWER | What methods can be used to protect steel?

Answer 53

Membrane protection and sprayed-on fireproofing

Question 54

SHORT ANSWER | What is the main difference between nonconbustible and fire-resistive construction?

Answer 54

The level of fire resistance (fire rating) assigned to the structural frame. walls, floors, and roof

Question 55

SHORT ANSWER | What are the benefits of using steel in building construction?

Answer 55

Any of the following: . Strength . Wide availability . Inexpensive cost

Question 56

WORD FUN | A standard I-beam cut lengthwise through the web

Answer 56

tee

Question 57

WORD FUN | A piece of steel that has two legs at right angles

Answer 57

Angles

Question 58

WORD FUN | A steel structural component that has a square U-shaped cross section

Answer 58

Channel

Question 59

WORD FUN | Plates less than 6 inches in width

Answer 59

Bars

Question 60

WORD FUN | A column made of vertical units connected with diagonal pieces

Answer 60

Lattice

Question 61

WORD FUN | Flat pieces of steel

Answer 61

Plates

Question 62

WORD FUN | A type of beam used to laterally relocate the vertical load of columns to clear an opening area

Answer 62

Transfer

Question 63

WORD FUN | Type of girder that will tie wall columns together in a framed building

Answer 63

Spandrel

Question 64

WORD FUN | A lightweight material that is both malleable and nonmagnetic

Answer 64

Aluminum

Question 65

WORD FUN | To evaluate and categorize

Answer 65

Triage

Question 66

READ EACH SCENARIO, THEN ANSWER EACH QUESTION IN DETAIL A building has been built of steel bar joists, metal roof deck, and masonry walls. A local businessperson is purposing to put a furniture store into the building. What concerns should be noted in the prefire plan related to the steel in this building?

Answer 66

The contents of the building can dramatically affect the structure. It should be noted how the underside of the roof could be reached with hose streams to minimize heat damage to the joists. Special attention should be directed at the building content height as well as the general height of the building. These factors could influence the amount of time it takes for the building to collapse or become heavily involved in a fire that prevents the steel from being cooled by heavy streams.

Question 67

READ EACH SCENARIO, THEN ANSWER EACH QUESTION IN DETAIL A steel building is under construction when it catches fire on a windy day. What special considerations does this situation pose?

Answer 67

The temporary bracing should be examined closely. It is impossible to make all of the connections as soon as steel is placed. Temporay bolts are placed in rivet holes; thereafter, rivets are driven in the remaining holes, then the bolts are replaced with rivets, or permanent bolts. This practice is known as"field bolting", and it is good to give a wide berth to field-bolted structures during high winds.