Chapter 5

Question 1

Parapet walls incorrect
A. Parapet walls are free standing walls supported from one end- the bottom
B. Steel lintels supporting a parapet wall can expand, twist or buckle due to heat causing a parapet wall to collapse
C. A parapet wall tied together with steel reinforcement rods will collapse in larger sections than a parapet wall without steel reinforcement rods
D. Both the front and back of parapet walls are made of finished brick a glazed with a water resistant coating

Answer 1

D (Ch 5 Pg 29-30) Only the front of parapet walls are made of finished brick a glazed

Question 2

Most dangerous area outside a burning structure is the sidewalk directly in front of the building, and it is even more deadly if the building has a \_\_\_\_\_.
A: Cornice
B: Canopy
C: Marquee
D: Parapet

Answer 2

D

Question 3

Select the choice that Dunn claims to be the most dangerous type of parapet wall.
A: Parapet wall that is constructed as the front wall of a 2 story structure above several large windows
B: Parapet wall that is constructed as the front wall of a 1 story structure above several large windows
C: Parapet wall that is constructed as the front wall of a 1 story structure above one large window
D: A parapet wall that is constructed as the side wall of a 1 story structure above several large windows

Answer 3

B This type of parapet is supported on top of a steel I-beam, which acts as a lintel spanning the big windows below
Chapter 5

Question 4

When does a parapet wall often collapse?
A: During the incipient/growth stage
B: During the fully developed/free burning stage
C: During the overhaul stage
D: When a back-draft occurs

Answer 4

C After the structure has been weakened and partially destroyed by fire and large caliber streams
Chapter 5