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Flashcards in BC Quiz 4 Deck (20)
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1

01. Cooling steel members with water will cause steel beams to? (More than one correct)
Select one or more:
a. Regain their load carrying ability
b. Regain their strength
c. Possibly fail
d. Possibly crack
e. Contract to their original length

(TP 3.6.4)
The correct answers are: Regain their strength, Regain their load carrying ability, Contract to their original length

2

02. Cast-Iron columns are unpredictable and fail, on the average, in ____ minutes in fire endurance tests?
Select one:
a. 10
b. 15
c. 20
d. 30

(TP 3.7.1)
The correct answer is: 30

3

03. Failure of a _____ is generally the most serious failure?
Select one:
a. Column
b. Deck
c. Girder
d. Beam

(TP 3.7.1)
The correct answer is: Column

4

04. A fire in a cellar with a heavy terrazzo floor above may? (More than one correct)
Select one or more:
a. Have little evidence of heat on the first floor
b. Be difficult to ventilate the first floor
c. Have sudden first floor failure due to heavy weight

(TP 3.9.2)
The correct answers are: Have little evidence of heat on the first floor, Be difficult to ventilate the first floor, Have sudden first floor failure due to heavy weight

5

05. Which point below is incorrect regarding collapse concerns?
Select one:
a. Heavy body of fire burning out of control for 20 minutes is a warning sign
b. Springy or soft feeling as you walk on a roof is a warning sign
c. Impact loads have much greater effect than the same weight carried as a static load
d. One cubic foot of brickwork weighs about 100 pounds

(TP 4.2.4, 4.2.5) D—Spongy feeling
The correct answer is: Springy or soft feeling as you walk on a roof is a warning sign

6

06. Backdraft warning signs include? (More than one correct)
Select one or more:
a. Gray-yellow smoke
b. Dense black smoke
c. Glass windows pulsating
d. Air reversal—pulling smoke back into a smoke filled opening
e. Glass window stained with smoke condensation

(TP 4.4B)
The correct answers are: Air reversal—pulling smoke back into a smoke filled opening, Glass window stained with smoke condensation, Glass windows pulsating, Dense black smoke, Gray-yellow smoke

7

07. The severity of a backdraft can be influenced by? (More than one correct)
Select one or more:
a. The type of gases burning
b. Amount of turbulence in the building caused by wind velocity and direction
c. Amount of turbulence in the building caused by hose streams directed inside
d. Openings made by the FDNY
e. Proximity of openings in relation to the fire

(TP 4.4C)
The correct answers are: Openings made by the FDNY, Proximity of openings in relation to the fire, Amount of turbulence in the building caused by wind velocity and direction, Amount of turbulence in the building caused by hose streams directed inside

C. Factors that influence the severity of the backdraft are:
1. type of gases, their temperature, pressure and make up.
2. size and location of the areas involved.
3. type and size of openings made by the Fire Department
4. proximity of openings in relation to the fire.
5. amount of turbulence in the building caused by the direction and
velocity of the wind and hose streams directed in the building

8

08. A room or fire area requires only _______ per cent of its space to contain an explosive mixture for the entire area to possibly explode?
Select one:
a. 30
b. 25
c. 20
d. 40

(TP 4.4F)
The correct answer is: 25

9

09. When backdraft conditions exist, the preferred procedure is to?
Select one:
a. Operate a charged hose line immediately into the fire area from a flanking position
b. Vent the front windows and let the gases ignite
c. Operate a charged hose line immediately into the fire area using the reach of the stream
d. Open the roof or area directly over the fire

(TP 4.4 K, M)
The correct answer is: Open the roof or area directly over the fire

10

10. Regarding inverted roofs, it would be correct to state that the high portion of the cockloft is in most cases at the _______ of the building?
Select one:
a. Sides
b. Front and rear
c. Rear
d. Front

(TP 5.3.3 A)
The correct answer is: Front

11

11. Vertical openings on taxpayers at the roof level should first be made by?
Select one:
a. Opening scuttles and skylights over or near the main body of fire
b. Cutting a trench
c. Cutting the roof cut directly over the fire
d. Opening any scuttles and skylights showing smoke

(TP 5.4.5)
The correct answer is: Opening scuttles and skylights over or near the main body of fire

12

12. An insufficient roof cut opening will cause heat smoke and fire to back up and vent toward other available flow path openings, including the entrance opening used by the advancing hose line.
Select one:
a. Disagree
b. Agree

(TP 5.4.6)
The correct answer is: Agree

13

13. Regarding roof cutting at taxpayers, it is incorrect to state?
Select one:
a. A Roof Sector Supervisor must supervise roof operations when one or more power saws are working on the roof
b. A Roof Sector Supervisor should be assigned as early as possible
c. To cut an effective size vent hole, calls for 2 saws and 4 members
d. The Roof Sector Supervisor may be a Chief or Company officer

(TP 5.4.12, 5.4.14) (B—more than one power saw)
The correct answer is: A Roof Sector Supervisor must supervise roof operations when one or more power saws are working on the roof

14

14. Engines using a fog tip to ventilate should adjust the fog tip to?
Select one:
a. Half the width of the opening and stand back 4-5 feet while operating
b. The width of the opening and stand back 4-5 feet while operating
c. The width of the opening and stand back 6-8 feet while operating
d. Half the width of the opening and stand back 6-8 feet while operating

(TP 5.4.16)
The correct answer is: The width of the opening and stand back 4-5 feet while operating

15

15. When cutting taxpayer roofs, it is incorrect to state that?
Select one:
a. Rectangular cuts provide for maximum ventilation of bays
b. Cutting a hole 8’ x 8’ is recommended.
c. If the recommended hole is not possible, a minimum 3’ x 6’ opening shall be made
d. On the standard roof, rectangular cuts are preferable

(TP 5.5.16-5.5.18) (B—the largest opening possible shall be made)
The correct answer is: If the recommended hole is not possible, a minimum 3’ x 6’ opening shall be made

16

16. A Chief should be assigned as the Roof Sector Supervisor when roof cutting is?
Select one:
a. Ordered
b. Required
c. Being conducted
d. Critical

(TP 5.5.20)
The correct answer is: Critical

17

17. Examination holes may be cut for which of the following reasons? (More than one correct)
Select one or more:
a. Check for fire extension
b. Release pent up gases, smoke and heat in areas removed from the fire
c. Determine where additional vent cuts are needed
d. Use of right angle tips

(TP 5.5.21)
The correct answers are: Check for fire extension, Use of right angle tips, Determine where additional vent cuts are needed, Release pent up gases, smoke and heat in areas removed from the fire

18

18. At cellar fires, it is incorrect to state that cutting the first floor should be?
Select one:
a. Made near windows and doors
b. Made away from aisles
c. Covered by hose lines
d. Extended at right angles to the joists

(TP 5.5.22) (A--Away from doorways)
The correct answer is: Made near windows and doors

19

19. At taxpayer fires with bowstring truss construction, the IC may implement an interior attack after a risk assessment based on which factor(s)? (More than one correct)
Select one or more:
a. Verification of safe access to the fire
b. Size of the fire
c. Suspected life hazards
d. Current structural stability
e. Location of the fire

(TP 5.5.25 A) (B—KNOWN Life hazards)
The correct answers are: Current structural stability, Size of the fire, Location of the fire, Verification of safe access to the fire

20

20. In which building(s) below may members operate on the roof of a building with a bowstring truss roof?
Select one:
a. Medium contents fire in the building — Steel bowstring truss
b. Small contents fire in the building — Wooden bowstring truss
c. Small structural fire in the building — Steel bowstring truss
d. Medium contents fire in the building — Combination bowstring truss
e. Exposure Building--not involved in fire — Building occupied

(TP 5.5.25 A, F)
The correct answer is: Exposure Building--not involved in fire — Building occupied