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FF 22 Exam 5 / Midterm ( Ch. 16-19 )(Ch. 20-22) Questions and Correct Answers the Latest Update $13.49   Add to cart

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FF 22 Exam 5 / Midterm ( Ch. 16-19 )(Ch. 20-22) Questions and Correct Answers the Latest Update

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Which building materials is the most common in North America & is the main component of many structural assemblies? Wood When masonry components like brick and stone are exposed to fire and high temperatures ; There is little effect on the masonry The effect of heat & fire on metal depends ...

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  • November 12, 2024
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FF 22 Exam 5 / Midterm ( Ch. 16-19 )(Ch.
20-22) Questions and Correct Answers the
Latest Update
Which building materials is the most common in North America & is the main component of

many structural assemblies?

✓ Wood



When masonry components like brick and stone are exposed to fire and high temperatures ;

✓ There is little effect on the masonry



The effect of heat & fire on metal depends on the ?

✓ Type of metal and whether or not it is covered.



What is the primary material used for structural support in the construction of large buildings ?

✓ Steel



Due to its high water content,______ has excellent heat-resistant and fire-retardant

properties.

✓ Gypsum



Which building material is not typically used for structural support ?

✓ Glass



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Which type of building material can be highly combustible & produce toxic gasses when

exposed to fire ?

✓ Engineered wood products



In a _____ building, structural collapse is unlikely but will usually be localized instead of

structure wide if it does occur

✓ Type I



Fires in the ____ stage do not generate sufficient heat or flame to cause unprotected steel or

wood frame buildings to collapse.

✓ Incipient



Contents of a building :

✓ Can cause collapse more rapidly due to added dead weight.



Which is an indicator of structural instability or impending structural collapse :

✓ Sagging, spongy roof



When should collapse zones be established ?

✓ When there is an indication that the structure has been weakened by prolonged exposure
to fire or heat



What should interior crews do first when structural collapse is likely or imminent ?


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✓ Exit the building and inform command.



Which is a true statement about factors that affect the fire spread ?

✓ Open floor plans and less compartmentation may contribute to fire spread.



Other than fire suppression, which fire-ground activity can greatly affect a structure's chance

of collapse?

✓ Overhaul



Which type of building material is affected by size & moisture content during fire conditions ?

✓ Wood



How does the size of a wooden structural member affect how it reacts to fire?

✓ Heavy timbers remain strong even after exposed to direct flame.



How does heat affect masonry ?

✓ Stones and concrete may experience spalling when they are heated.



Cast iron may crack or shatter when it is:

✓ rapidly cooled with water.



When heated, steel structural members tend to :




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✓ elongate and push walls outward



Which factor is likely to affect the speed with which a steel structural member fails under fire

conditions ?

✓ Size



How does reinforced concrete react when exposed to fire ?

✓ It performs well, but can lose strength through spalling



Which type of building material is used to protect other materials because it's moisture content

gives it excellent heat resistance ?

✓ Gypsum wallboard



What is a concern about lath & plaster during a fire ?

✓ Conceals hidden fires and adds fuel to the fire



Which statement describes how glass will react under fire conditions ?

✓ Heated glass may crack when water is applied.



Which type of building material can produce toxic gases & rapidly deteriorate under fire

conditions ?

✓ Oriented Strand Board (OSB)




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