How does heat affect masonry?
Select one:
a. Bricks may experience spalling when they are heated.
b. Bricks will crumble after minimal exposure to heat and flame.
c. Stones and concrete will crumble after exposure to direct flame.
d. Stones and concrete may experience spalling when they are he...
Ch 16 IFSTA questions with correct answers
How does heat affect masonry?
Select one:
a. Bricks may experience spalling when they are heated.
b. Bricks will crumble after minimal exposure to heat and flame.
c. Stones and concrete will crumble after exposure to direct flame.
d. Stones and concrete may experience spalling when they are heated. - Answer Stones and concrete may experience spalling when they are heated.
When establishing collapse zones,:
Select one:
a. the IC should wait to cordon the zones off until an offensive strategy has been adopted.
b. interior crews should be allowed to finish tasks before exiting the structure.
c. apparatus must not be positioned in the collapse zone.
d. the size of the collapse zone depends on the width of the building. - Answer apparatus must not be positioned in the collapse zone.
Why can abandoned buildings pose great danger of fire and collapse?
Select one:
a. The interior may be gutted and altered.
b. The interior may be compartmentalized.
c. The exterior may be made of lightweight components.
d. The exterior may be covered with flammable materials. - Answer The interior may be gutted and altered. Which building material can potentially be harmful to firefighters because it contains a glue called urea formaldehyde that gives off a hazardous gas when it is heated?
Select one:
a. Plywood
b. Mineral wool
c. Particle board
d. Cellulose - Answer Particle board
How do a building's contents affect fire growth and structural collapse?
Select one:
a. Contents can retain water and increase the stress on structural members.
b. Contents burn more slowly than structural members, so it takes longer for the fire to grow.
c. Contents help distribute the weight in the building evenly, which adds structural stability.
d. Contents create barriers that help block fire spread. - Answer Contents can retain water and increase the stress on structural members.
What should take place immediately after the collapse zone is cleared?
Select one:
a. Personnel return to the staging area
b. After-action report
c. Size-up
d. Personnel accountability report - Answer Personnel accountability report
How does reinforced concrete react to exposure to fire?
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