Ch7 Ladder Company Operations Flashcards
What three basic tools will be required at almost all structure fires?
Forcible entry bar, flathead axe, and some type of hook or pole.
What does LOVERS U stand for?
L-Laddering O-Overhaul V-Ventilation E-forcible Entry R-Rescue S-Search U-control of Utilities
What is the single most important factor affecting ladder selection?
Length
NFPA requires how many feet of ground ladders?
168’
What is the nested length of a 2 section 35’ ladder?
20’
What is the estimated distance from floor to floor of a residential building?
9’
What is the estimated distance from floor to floor of a commercial building?
12’
Average windowsill height is how far above the floor, and the average window is how tall?
Windowsill 3’ from the floor with windows being an average of 4’ tall.
What is the proper climbing angle for a portable ladder?
About 70 degrees
At a 70 degree angle, about 6% of a ladders total length is lost. The remaining 94% is called what?
The working length
A 13’ reach is required to reach what floors windowsill?
2nd
How do you estimate the proper distance away from the building to place the butt of your ladder to gain the proper climbing angle?
Estimated working height divided by 4.
When venting a window from a ladder, where do you place the tip of the ladder?
Even with the top of the window frame on the upwind side.
If entering or exiting through a window, where do you place the tip of the ladder?
Just at or below the windowsill.
What does NFPA 1932 require on each section of aluminum and fiberglass ladders?
Heat indicating labels.
At what temperature do the heat indicating labels on ladders change color?
300 degrees
Why is the design load of firefighting ladders 750 lbs?
Because it usually takes two firefighters to remove a single unconscious person. 250 lbs per person.
What is the narrowest width our ground ladders can be?
16”
A platform attached to a boom with a built in waterway and a side less escape ladder is known as a what?
Tower ladder
When raising an aerial to the roof, how far should the ladder extend above the level of the roof?
At least 5 rungs.
How far should the ladder itself remain out from the building?
1”-2”
How far should you keep aerials away from wires?
10’
When placing a platform to the roof, with no parapet wall, where should it be placed?
Place the basket over the building so that it is just resting on the roof.
When placing a platform to the roof of a building with a parapet wall of moderate height (3-6 ft), where should it be places?
Place the top rail of the platform basket just slightly above the top of the parapet.
When placing a platform to the roof of a building with an unusually high parapet wall, over 6 ft, where should you place the platform?
It is best to relocate the platform.
When positioning platforms for rescue, how should you spot?
With the basket inline with the victim.
When positioning aerial ladders for rescue, how should you spot?
With the turntable in line with the victim.
What is the width of most aerial ladders?
20”-24”
Why should you place the tip of the aerial ladder just below the windowsill?
To leave most of the window free for access.
The amount of surface area that may be physically contacted by an aerial device is the definition of what?
Scrub area.
What is the 15-sec. 2-min rule?
If a firefighter can leave his bare hand on the surface for 15-20 seconds without undue discomfort, there is no immediate need to open the wall. That same firefighter rechecks that spot in 2 minutes. If it feels the same or is hotter, open the wall.
What 5 senses do you use during post control overhaul?
Sight, hearing, touch, smell, common sense.
What is the NFPA standard for use, maintenance, and service testing for fire dept ground ladders?
NFPA 1932
After raising a ground ladder to the proper height, what do you do with the halyard?
Tie it to the bed section to prevent retraction of the ladder.
What color of ash from normal class A combustibles is still hot enough on the surface to reignite?
White or grey
At what temperature does human skin begin to develop burns?
120 degrees F
At what temperature do common combustibles begin to ignite?
400 degrees F
What is the least used sense in overhaul?
Smell
Where is the best position for a FF to be standing when he begins to pull ceiling?
In the doorway of the room, incase the entire ceiling comes down.
When does salvage begin?
The moment of arrival.
