water mapping in residential structures

Question 1

When the hose stream hits a surface at a 90-degree angle, the water:

Answer 1

It is dispersed in all directions, 360 degrees

Question 2

What factors can negatively impact the distance water travels along the surface?

Answer 2

gravity and friction

Question 3

The heavier an object is and the faster it is moving, the less momentum it has.

Answer 3

false

Question 4

Using a fire service nozzle, what is the most effective way to maximize cooling from the application of water?

Answer 4

Coat as many surfaces in the fire room as possible

Question 5

If you wanted water to be distributed as evenly as possible along the ceiling and sides of the walls, where would you aim your hose stream?

Answer 5

Towards the ceiling at a maximum angle

Question 6

Which of the following factors impact the water distribution in a compartment?

Answer 6

A. Length of hose stream
C. Bale Position

Question 7

When the nozzle bale is opened halfway, it significantly reduces the speed of the water as it exits and causes a lot of turbulence, resulting in the stream breaking up.

Answer 7

true

Question 8

During fire suppression, what should the primary bale position be?

Answer 8

full open bale

Question 9

If you flow water into a window on the second story, the momentum will increase and more water will be distributed horizontally when it hits a surface.

Answer 9

false

Question 10

When presented with a fire venting from a first floor window, using a steep angle off of the ceiling will result in the stream dispersing:

Answer 10

In all directions, coating the ceiling and side walls

Question 11

When presented with fire venteing from a first floor window, what would be the most effective tactic to coat the most surfaces in the room?

Answer 11

Flow a smooth bore or a straight stream at the ceiling and at a steepest angle possible.

Question 13

Upon reaching the intended compartment, the firefighter in the hallway can apply the stream _________ to provide the best water distribution in the compartment before entering.

Answer 13

At a steep angle through doorway and off the ceiling

Question 14

On which floor of this mid-rise structure would the speed of the hose stream be the lowest if an exterior water application is employed from the ground floor via a straight stream.

Answer 14

4th floor

Question 15

When advancing down a hallway and flowing water, which of the following methods leverages the principles of water dispersion to most effectively coat the surfaces of the walls and ceiling along the entire length of the hallway?

Answer 15

Either a wall-celing-wall or O pattern down the hallway towards the fire compartment.

Question 16

During an interior attack of a residential structure, the hose stream will likely impact a surface or obstruction before it exceeds its effective reach.

Answer 16

true