Ventilation

Question 0

Inspection hole

Answer 0

2’x2’x2’

Large triangle: rafter type and orientation

Question 1

Proper placement of blower from door

Answer 1

6-8 ft

Question 2

Smoke indicator hole

Answer 2

Every 10 ft, 3”x3”x3”

Small triangular: I.D. Smoke and fire

Question 3

Kerf cut

Answer 3

3” single cut, width guide bar

Question 4

Standard size of hole on commercial roof

Answer 4

4x8

Question 5

Multiple dwelling

Answer 5

4x8 or 3x10

Question 6

Highest sdfd truck ladder is

Answer 6

105 ft

Question 7

Number of rungs above roof line

Answer 7

6-8 rungs

Question 8

Ventilation

Answer 8

The systematic removal of heat, smoke and fire gases from a structure and replacing fresh air using selected and controlled channels

Question 9

Positive pressure ventilation (ppv)

Answer 9

A technique that forces fresh air into a structure with high volume fans to create a higher pressure inside the building than the outside. By systematically opening doors and windows to channel the pressurized clean air, you can effectively ventilate smoke, heat and gases out of a structure

Question 10

Characteristics of smoke:

Answer 10

Volume, velocity, density and color

Question 11

Smoke volume is an

Answer 11

Indicator of the amount of fuels that are “off gassing” within a given space

Question 12

Velocity is the

Answer 12

Speed and flow characteristics of smoke leaving a building

Question 13

Smoke density is

Answer 13

Indicative of the amount of fuel that is laden within the smoke. The greater the density, the more likely a hostile event like a flashover or rapid fire spread can occur

Question 14

Smoke color can tell the firefighter

Answer 14

Which stage of burning is taking place or where the fire is within the building

Question 15

Tips for ventilating with chainsaw:
1.
2.
3.
4.
5.

Answer 15

Hand and arm straight
Do not stand in hole
Do not cut towards self
Stand on the rafters
Shuffle feet