QUESTIONS AND CORRECT ANSWERS
Which construction technique builds one floor at a time with a firestop between each floor?
a. ordinary
b. balloon
c. flitch plate
d. platform frame - CORRECT ANSWER d. platform frame
A problem with using doorways as ventilation openings is that ______.
a. this technique compromises personnel entry & exit
b. it is more difficult to control the ventilation process
c. the large opening can admit too much air
d. this technique tends to produce churning - CORRECT ANSWER a. this technique
compromises personnel entry & exit
Which form of ventilation is best for potential backdraft conditions?
a. negative pressure
b. positive pressure
c. horizontal
d. vertical - CORRECT ANSWER d. vertical
Within a room space, where are the hottest gases found?
a. at the lowest level
b. it varies depending on the composition of the gases
c. distributed uniformly throughout the volume
d. at the highest level - CORRECT ANSWER d. at the highest level
, What is the sudden, explosive ignition of fire gases that occurs when oxygen is introduced
into a superheated space?
a. mushrooming
b. rollover
c. backdraft
d. flashover - CORRECT ANSWER c. backdraft
When ventilating the basement, where is the preferred location to ventilate?
a. the point farthest away from the entrance used by the fire attack crew
b. any preexisting opening
c. the most accessible location
d. the stairway from the upper level - CORRECT ANSWER a. the point farthest away
from the entrance used by the fire attack crew
What is correct procedure when cutting a ventilation opening in a roof?
a. use preexisting openings only when there is no alternative
b. rock the saw over, rather than through, structural supports
c. several small holes distributed over the fire are better than one large hole
d. return the saw to idle before withdrawing it from a cut - CORRECT ANSWER b.
rock the saw, rather than through, structural supports
What is the minimum measurement for a ventilation opening cut in a roof?
a. 5 ft by 5 ft
b. 6 ft by 6 ft
c. 6ft by 8 ft
d. 4ft by 4 ft - CORRECT ANSWER d. 4ft by 4 ft
Which statement summarizes the overall effect of negative-pressure ventilation?
a. it releases the contaminated atmosphere
b. it pulls smoke out