201-07 Collapse During Structural Firefighting Operations

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Questions and Answers

Which of the following factors can contribute to an increase in structural collapse during firefighting operations?

  • The use of lightweight construction materials
  • The availability of water
  • The age of the building (correct)
  • The presence of firefighters

What are some possible warning signs of a building collapse?

  • Bulging walls (correct)
  • Missing mortar
  • Leaning doors
  • Excessive smoke

In which type of construction is concrete the primary collapse danger?

  • Type I construction (correct)
  • Type II construction
  • Type III construction
  • Type IV construction

What can happen to heated concrete ceilings in reinforced concrete buildings?

<p>They can spall (D)</p> Signup and view all the answers

What is the primary collapse danger in a noncombustible/limited combustible building?

<p>Truss roof cave in (B)</p> Signup and view all the answers

What can happen to heated concrete floors in steel skeleton buildings?

<p>They can crack or sag (D)</p> Signup and view all the answers

Which type of construction is most likely to cause severe damage to surrounding buildings when it collapses?

<p>Type IV construction (C)</p> Signup and view all the answers

What is the primary collapse hazard of a wood frame building?

<p>Combustible bearing walls (C)</p> Signup and view all the answers

How can masonry walls collapse?

<p>All of the above (D)</p> Signup and view all the answers

What is the leading cause of firefighter deaths in collapse events?

<p>Wooden floor collapse (D)</p> Signup and view all the answers

Which type of ceiling is considered the most dangerous?

<p>Suspended 'drop' type ceilings (B)</p> Signup and view all the answers

What can cause a stairway to fail?

<p>Both fire weakening and additional weight of firefighters (B)</p> Signup and view all the answers

Which type of roof collapse is more likely to occur in a newer building with steel bar joist construction?

<p>Flat roof collapse (A)</p> Signup and view all the answers

What should firefighters check for when examining fire escapes?

<p>All of the above (D)</p> Signup and view all the answers

Which type of roof collapse is more likely to occur when fire enters the space between the built-up roof and the original roof?

<p>Flat roof collapse (C)</p> Signup and view all the answers

What should firefighters do if bolts are rusted or missing on a fire escape?

<p>Consider another means of accessing or exiting the building (B)</p> Signup and view all the answers

What should firefighters do if treads are rusted or missing on a fire escape?

<p>Consider another means of accessing or exiting the building (A)</p> Signup and view all the answers

What should firefighters do if fire is impinging a truss roof?

<p>Change tactics (C)</p> Signup and view all the answers

What should firefighters do if the fire is not directly under the roof in the attic of a peaked roof?

<p>Assume the structural elements are being attacked and not operate on the roof (B)</p> Signup and view all the answers

What should firefighters do if the roof is connected to the supporting walls in an unrestrained beam resting on a girder?

<p>Walk near the parapet wall (D)</p> Signup and view all the answers

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