Chapter 5: Ground Ladders Flashcards
Ground ladders maybe need it for any or all of the following
- Gaining access two outside of burning building
- Reaching lockboxes
- Reaching windows
- Accessing roofs
The following are the most common types of ground that is currently in use
- Single (straight) ladders
- Roof ladders
- Folding (attic) Ladders
- Extension ladders
- Combination ladders
Prior to selecting and positioning ground ladders a number of factors should be considered. The most critical factors are?
- primary objectives (rescue, window, or roof access)
- Fire size and location
- Current and expected fire behavior
The ideal climbing angle for ground ladder is__degrees from horizontal
75 degrees
Angle is less than 75°, the distance between personnel on the ladders should?
Be increased
The keys to safe and effective ladder handling are?
Fitness, technique, and practice both individually and as a team
To develop and maintain sufficient upper body strength firefighters must participate in a weight training program with elements of the following
- Hands (grip strength)
- Arms (Lifting,pushing/pulling)
- Shoulders (overhead lifting, pushing/pulling)
- Upper and lower back (overall stability)
Adequate upper body strength is needed to properly handle
Ground ladders
If a fire department chooses to use a non-standard technique for handling ladders, the technique should be?
Thoroughly tested under controlled circumstances before being used on the fire ground.
Ladders position for Rescue should be placed_______with the window and slightly below the seal.
Mid-line
Ladder position for VENTILATION should be placed on the________side of the window.
Windward
While vertical ventilation is not the only reason for using ladders to access the roof of a burning building, it is the most frequent. Other reasons for using ladders to access roofs are?
- Performing rescues from rooftops
- Checking for spot fires
- protecting the structure
- Gaining a high advantage when applying water to a fire in an adjacent building
In the absence of an aerial device, ground ladders are the primary means of gaining access to the roof of a structure up to____stories in Height.
Four stories
_________ are constructed using A-frame ladders to channel water from upper floors out of the structure.
Water chutes
_______ can be kept off the bottom of a water source doing drafting using ground ladders.
Intake strainers
Using bridging the width of the gap should not be more than______the length of the available ladder.
One third
How many rungs above a parepet or roof should a ladder be?
3 to 5 rungs
How far from a building the butt or base of the ladder must be place to create the ideal climb in angle?
The proper distance can be determined by dividing the used length of the ladder by four.
What is the used length of a ladder?
The vertical distance above the ground with a ladder contacts the building
Firefighters should use enough_____to safely handle the ladder selected.
Personnel
What should firefighters check for before raising any ladder?
Electrical wires in other overhead obstructions
Extend ladders to a maximum of___foot above metal railings.
One foot
Do not use ground ladders to?
Break windows
Tie ladders to secure _________ to prevent unwanted movement.
Anchor points
A minimum of___firefighters are required to raise a pole ladder.
4
Ladder placement for ventilation.
The tip of the ladder should be even with the upper portion of the window.
If a ladder is to be used for entry or rescue through a window the ladder tip is usually placed?
On the midline of the window and slightly below the sill.
If the window opening is wide enough to permit the ladder tip to project into it and still allow room beside it to facilitate entry/exit and rescue, the ladder can be place so that it extends?
2 to 3 rungs into the window opening.
What ladder placement can be use by firefighters who need to climb in and out of Narrow windows or direct hose streams into them.
The ladder tip should be even with the upper portion of the window, and placed on the windward side.
Ladder should be placed to upper floors and the roof not only to provide access, But also to provide a?
A secondary means of egress
Creating a ventilation opening in the roof of a burning building is often the safest way to mitigate potential Backdraft conditions and may prevent a?
Flash over from occurring
In the absence of an aerial device,_____Are the primary means of gaining access to the roof of structures up to four stories in height
Ground ladders
