IFSTA Chapter 16 & 17 Exam | Questions and Verified Answers| 100% Correct
IFSTA Chapter 16 & 17 Exam | Questions
and Verified Answers| 100% Correct
Q: How can HVAC systems affect tactical ventilation?
Select one:
a. Cool the air in the fire room to weaken the fire’s intensity
b. Help extinguish the fire by changing the pressure in the structure
c. Provide fresh air to ventilation crews
d. Move products of combustion to unaffected areas
Answer:
Move products of combustion to unaffected areas
Q: Why are buildings under construction more susceptible to fire spread?
Select one:
a. Structurally unsound construction
b. Presence of Type I construction materials
c. Sprinklers and FDCs are not yet operational
d. High fuel loads
Answer:
Sprinklers and FDCs are not yet operational???
Q: When should firefighters begin considering the potential that a building will collapse?
Select one:
a. Immediately upon arrival at the incident
b. Once the fire reaches the fully involved stage
c. Once the fire reaches the growth stage
d. During preincident surveys and size-up
Answer:
During preincident surveys and size-up
Q: What is a concern about lath and plaster during a fire?
Select one:
a. Stretches when heated
b. Conceals hidden fires and adds fuel to the fire
c. Shows signs of spalling when exposed to fire
d. Releases toxic gases when heated
Answer:
Conceals hidden fires and adds fuel to the fire
Q: How can water from fire suppression affect a building’s structural stability?
Select one:
a. Water adds weight, but does not add stress to the structure.
b. Water weight added from suppression can cause floors to collapse.
c. Water has a positive impact on stability since it reduces the structure’s fuel load.
d. Water has minimal effect on a structure’s stability.
Answer:
Water weight added from suppression can cause floors to collapse.
Q: In which stage of fire development does structural collapse become likely due to the
weakened state of structural members and buildup of water?
Select one:
a. Fully developed
b. Growth
c. Decay
d. Incipient
Answer:
Decay
Q: What is an indicator of structural collapse?
Select one:
a. Absence of reinforcing tie rods
b. Smoke movement through windows
c. Fire in the incipient stage
d. Distorted structural members
Answer:
Distorted structural members
Q: When should a collapse zone be established at a structure fire?
Select one:
a. Once a defensive strategy is adopted
b. After mutual aid is requested
c. Before cordoning off the hot, warm, and cold zones
d. As soon as interior operations begin
Answer:
Once a defensive strategy is adopted
Q: Which type of building material is used to protect other materials because its moisture
content gives it excellent heat resistance?
Select one:
a. Lath and plaster
b. Reinforced steel
c. Reinforced concrete
d. Gypsum wallboard
Answer:
Gypsum wallboard
Q: Once it is determined that collapse is imminent,:
Select one:
a. the collapse zone should be cleared as soon as possible.
b. the primary search must be completed, and then the building should be evacuated.
c. the interior crews should remain working until they recover all victims.
d. everyone who is not directly related in suppression or rescue must leave the collapse zone.
Answer:
the collapse zone should be cleared as soon as possible
Q: Which factor is likely to affect the speed with which a steel structural member fails under
fire conditions?
Select one:
a. Exposure to foam extinguishing agents
b. Where the steel is located in the structure
c. Age
d. Size
Answer:
Size
Q: Little or no water runoff from the interior of the structure can be an indicator that:
Select one:
a. the structure is retaining water and at risk of collapse.
b. the structure is stable, because the fire has been put out.
c. fire suppression was not effective.
d. fire suppression was effective.
Answer:
the structure is retaining water and at risk of collapse.
Q: Traditionally, how large is the collapse zone?
Select one:
a. 1½ times the width of the structure
b. 2½ times the width of the structure
c. 2½ times the height of the structure
d. 1½ times the height of the structure
Answer:
1½ times the height of the structure
Q: How does the size of a wooden structural member affect how it reacts to fire?
Select one:
a. Heavy timbers remain strong even after exposure to direct flame.
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