11: TACTICAL VENTILATION
Which inspection hole is made by making a single cut in the roof surface using
a rotary saw, chain saw, or axe? (518) [4.3.12]
a. Box cut
b. Angle cut
c. Triangle cut
d. Kerf cut - ANSWERS-d. Kerf cut
When ventilating flat roofs, the most common openings are: (518) [4.3.12]
a. straight lines.
b. square or rectangular.
c. triangular.
d. circular or oval. - ANSWERS-b. square or rectangular.
When ventilating shingle-covered pitched roofs, always cut the exhaust
openings: (519) [4.3.12]
a. at or very near the lowest point of the roof, when possible.
b. at or very near the highest point of the roof, when possible.
c. near the center of the roof.
d. as close to an egress point as possible. - ANSWERS-b. at or very near the
highest point of the roof, when possible.
When ventilating metal roofs, which type of roof can be sliced open with an
axe, carbide tip chain saw, or rotary saw and peeled back? (519) [4.3.12]
,a. Industrial metal roofs
b. Thin metal roofs
c. Roofs built after 2000
d. Sheet metal roofs - ANSWERS-b. Thin metal roofs
What is the purpose of a trench cut? (520) [4.3.12]
a. Indicate conditions below the roof
b. Create a defensible line ahead of the fire's spread
c. Make conditions on upper floors tenable for firefighters
d. Determine construction features of the roof - ANSWERS-b. Create a
defensible line ahead of the fire's spread
For what situation would an incident commander order a trench cut? (520)
[4.3.12]
a. Structural collapse is likely
b. The main fire is igniting nearby exposures
c. Victims are trapped on upper floors
d. The main fire is too large to extinguish - ANSWERS-d. The main fire is too
large to extinguish
Horizontal ventilation can be employed effectively in a basement if the
basement: (523) [4.3.11]
a. has ground level windows or below ground level windows in wells.
b. consists of one small compartment.
c. consists of a large open plan.
d. has interior stairs. - ANSWERS-a. has ground level windows or below
ground level windows in wells.
, What type of nozzles can be used before ventilation to reduce the risks
associated with ventilating a windowless basement? (523) [4.3.12]
a. Piercing nozzles
b. Combination nozzles
c. Adjustable nozzles
d. Fog nozzles - ANSWERS-a. Piercing nozzles
The feasibility of opening a floor during fire fighting depends on how it was
constructed and: (523) [4.3.12]
a. from what material it was constructed.
b. surrounding furniture.
c. how easily it can be replaced.
d. the value of the floor. - ANSWERS-a. from what material it was constructed.
Fires in windowless buildings usually require ______ ventilation for removal of
smoke. (523) [4.3.12, 4.3.11]
a. hydraulic
b. mechanical
c. natural
d. combination - ANSWERS-b. mechanical
What has an even higher priority in high-rise buildings because they often have
more occupants than other structures? (525) [4.3.11, 4.3.12]
a. Property conservation
b. Incident stabilization
c. Life safety
d. Environmental concerns - ANSWERS-c. Life safety