Chapter 2 Truck Company Response, Placement, and Operations Flashcards
What is the biggest single factor in total stopping distance?
Speed
What are the seven steps of visual awareness?
- Know your blind spots
- look ahead
- get the total picture
- constantly move your eyes
- maximize your perimeter space
- allow sufficient following distances
- make sure they know your intended actions
Effective fireground operations center around how many incident commanders?
One
Who should determine the initial placement of apparatus at an incident?
The first-in officer
When comparing the placement of engine and truck companies, which normally offers the most flexibility when spotting to a structure?
Engine companies
What are the two advantages of having responding companies approach an incident from different directions?
The companies will collectively see more sides of the building as well as primary and alternate sources of water
What are three key factors that can affect the ability of an aerial device to reach an objective?
- Setback
- height of the objective
- length of the aerial device
What is the practical definition of maneuverability as pertains to apparatus placement?
Turning radius
Why should an aerial device be spotted to the corner of a building if possible?
to reach two sides,
the aerial device won’t be place over horizontal openings,
the corner is the strong area of construction,
it is out of the potential collapse zone,
and the aerial can be used as a potential defensive exposure protection tool.
What is the definition of target area as pertains to aerial device operations?
The area that can be reached by an aerial device
Who has given the fire service the right-of-way in most cases
state laws
Who can be held accountable for unsafe operation of a fire apparatus?
Driver and department
What 2 factors primarily save time in an actual response?
- Getting to apparatus quickly
2. Knowing your district
If speed is doubled, what happens to perception-reaction distance?
Braking distance?
perception-reaction distance is doubled
Braking distance is 4x
While driving, the “total picture” contains what 3 basic elements that affect judgment and actions?
- vehicles and obstacles
- warning devices
- ability to predict actions and events
As pertains to responding code in an apparatus, what is a Offset Formation?`
a distorted V.
Lead apparatus close to center line,
2nd apparatus to far left or right
3rd apparatus to far left or right, opposite of the 2nd
Where do most accidents involving emergency apparatus occur?
intersections
How much more stopping distance is required to stop on wet concrete as opposed to dry concrete?
35 to 40 percent more stopping distance.
What 2 things make a good driver?
Good attitude
Good judgment
Obstructions such as buildings, hills, heavy brush can reduce siren audibility by how much?
2/3rds
What warning device should not be used in lieu of a siren?
air horn
A lack of initial direction will usually result in what?
freelancing
What does the success of an operation depend on?
Communication
What is a Size-up?
The estimate of a situation made by the officer in charge, through whom it is determined what to do and how to do it.
What should a Size-up include? (5)
Address Observed conditions Initial actions Instructions to incoming companies Requests for other resources
What is apparatus placement dictated by? (2)
Incident priorities
Vehicle function
With moderate setback, how far can a 75 foot Aerial device reach?
The roof of a 4-story building
How high can a 100 foot Aerial device reach?
Roofs of 6 to 8 story buildings
An Aerial device is often “only” considered for use on structures that are how tall?
3 or more stories
As the Angle of Inclination increases between the ground and the aerial device, what happens to the strength of the aerial device?
it increases
On uneven terrain, which side of the aerial device should raised first?
Low side jacks first
With the advent of Maxi brakes, the purpose of chock blocks has switched from what to what?
from preventing the vehicle from rolling to distributing load-carrying capacity across more tire surface
How far should you keep the aerial device from electrical wires?
10 feet
How many feet should be clear behind a truck? Why
30 feet. Ground ladders
Where do you place the aerial ladder when placing to a window or fire escape balcony?
top rung flush with the sill or railing
When approaching an objective on a hill, do you want to be uphill or downhill? Why?
downhill. Increases the angle of Inclination
except when the aerial wont reach the objective.
What can you look for to determine the height of a parapet?
attic vents
rafter tie plates
scuppers
What should be the capabilities of a platform aerial device?
Lift 500 lbs at the tip WHILE flowing 1,000 gpm of water in any position
What should be the objective of extending a ladder over an objective?
extend it far enough to be seen easily from the roof
What does a pinnable waterway let you do?
allows the ladder to be extended without the waterway and monitor, facilitates closer placement of the ladder
How far above an objective should an aerial ladder be placed? Why?
4 to 6 inches
may foster building collapse
may weaken the ladder
NFPA 1904 requires what of new aerial ladders and platforms?
requires all new aerial ladders and platforms to have or exceed a rating of 250 lbs at the tip at full extension and be able to operate in any position
What are the generation of aerial devices?
1st GEN–prior to 1980
2nd GEN–1980 to 1991
3rd GEN 1991 to present
