TST Long

Question 1

Some of the factors that have a bearing on where to ventilate include:

(10)

p. 300

Answer 1

• Location of fire
• Location of occupants
• Exposures
• Type of construction
• Use of occupancy
• Extent to which fire has progressed
• Condition of the building and its contents
• Existing openings (skylights, monitors)
• Direction and velocity of wind
• Resource availability and capability

Question 2

Mechanical forced ventilation is indicated when:

(6)

p. 303

Answer 2

• Location and sie of fire has been determined
• Building layout not conducive to natural ventilation.
• Natural ventilation slows or becomes inefficient.
• Fire is burning below grade.
• Involved area is large
• Indicated by the building type or fire situation.

Question 3

Before and during vertical ventilation, the following items must be considered:

(11)

p. 346

Answer 3

• Verify attack lines are charged and ready
• Evaluate roof type and condition
• Provide a second egress
• Observe weather
• Note obstructions or dead loads on roof
• Read roof continually
• Locate the seat of the fire
• Use existing roof openings when appropriate
• Enlarge original opening instead of additional holes
• Track elapsed time of incident

Question 4

Features that can be read before stepping onto a roof:

(7)

p. 348

Answer 4

• Age of building
• Type of roof structure
• Location and orientation of supporting members
• Type and condition of roof covering
• Heavy tanks, machinery, solar panels
• Smoke
• Fire

Question 5

Other factors firefighter should look for before stepping onto a roof:

(7)

p.349

Answer 5

• Sagging surface
• Vents that appear tall, from sagging
• Large puddles of water
• Smoke or fire coming from vents
• Heavy dead loads
• Drop-offs due to light wells
• Solar panels

Question 6

High-Ris Fire Operations challenges:

(11)

p. 410

Answer 6

• Limited Access
• Large number of offices or apartments
• Heavy occupant loads
• Falling glass and debris
• Fire spread through shafts
• Locked interior doors
• Low water pressure
• Having to climb an extrordinary number of stairs
• Trapped occupants
• Unfamiliar floor layouts
• Complex systmes - HVAC, elevator, FAP
• Communication problems