Ch 5 Collapse Dangers Of Parapet Walls Flashcards
What can push out the parapet wall during a fire due to expansion? p. 70
Girders
Up to how many times the height of the wall will a collapsing ordinary masonry wall cover with bricks? p. 74
Two times
Which part of the parapet wall can lead to collapse due to bending or twisting when exposed to the heat of the fire? p. 68
Lintel
Which of the following is NOT a correct statement about an explosion occurring inside the building? p. 72
Create minor tremor throughout the structure
Where is the parapet wall broken when a truss roof fails and shifts its weight to the wall? p. 71
Middle
Which part of the parapet wall may collapse when it is tied together with reinforcement rods, but only one
section is unstable? p. 68-69
The entire wall may collapse
Which side of the parapet wall is often constructed of poor materials and unfinished? p. 69
Back
What holds the coping stones in place if not properly maintained? p. 69
Gravity
What is the movie marquee attached to? p. 70
Roof beams
Where is the front, freestanding parapet over a store supported? p. 68
Bottom
What is the first thing the aerial apparatus operator should do when repositioning the apparatus? p. 73
Raise the tip upward
Which statement is NOT correct?
p. 73
Parapet walls are safe from collapse during overhaul
Where is the most dangerous place at a fire with a parapet wall? p. 67
Sidewalk in front of the building
Which type of parapet walls tend to collapse more frequently? p. 67
High, ornate
Which parapet wall will collapse when a roof failure occurs with a wooden truss roof with sloping hip rafters?
p. 71
Front
