Book 29 Truck Operation Manual

Question 1

According to Book 29,
effective ventilation will accomplish
what four main objectives?

Answer 1

1. Save lives
2. Assist in FF access
3. Control horizontal spread of fire
4. Reduce the possibility of flashover
   and backdraft.

Question 2

If heat, smoke, and fire gases
are not released during a fire, they will accumulate at the highest point of the structure and begin to bank down and spread laterally. This process is
generally known as _________.

Answer 2

Mushrooming

Question 3

A condition where all the
contents of a room are heated to their ignition temperature is ___________.

Answer 3

Flashover

Question 4

In a confined area, when the
structures contents reach their ignition temperature and there is not significant oxygen to support combustion, a very dangerous condition known as _______ exists when air is introduced to the
environment.

Answer 4

Backdraft

Question 5

According to Book 29, what is
the key to safe and effective roof
ventilation?

Answer 5

Knowledge of rafter type
and rafter direction

Question 6

When operating on a
lightweight truss roof, when shall
ventilation operations be conducted directly over the fire?

Answer 6

Never

Question 7

On roofs sheathed with
plywood, the “Head Cut” is made how?

Answer 7

Perpendicular to the rafters

Question 8

what are two types of ventilation holes?

Answer 8

Heat Hole (offensive), and
strip ventilation (defensive)

Question 9

what are two types of ventilation holes?

Answer 9

Heat Hole (offensive), and
strip ventilation (defensive)

Question 10

According to Book 29, what
direction are “dice” cuts made?

Answer 10

Parallel to the rafters