Flashcards in Chapter 12 Deck (107)
Ground Ladders are carried on...
All pumpers and aerial ladders
How many FFs does it take to carry and raise into position?
Besides access to upper stories and roofs, what else can ground ladders be used to reach?
storm drains, confined spaces, and pits
Design, construction, and testing specifications for fire service ground ladders are contained in which NFPA?
NFPA 1931 require folding ladders to be able to support how many lbs?
NFPA 1931 requires that single, roof, combination, and extension ladders must be able to support how many lbs?
Standard on use, maintenance, and service testing our contained in which NFPA?
What is a beam?
main structural member supporting the rungs and rung blocks
What is the bed section?
lowest and widest section of an extension ladder maintaining constant contact with the ground
What is the butt?
bottom end of ladder placed on the ground
What are the butt spurs?
metal plates/spikes, or cleats attached to the butt end of ground ladder beams
What is the fly section?
upper section of extension
What are the foot pads?
swivel plates attached to the butt of the ladder
What are the guides?
wood, metal strips, slots, or channels guiding the fly section while being raised
What is a halyard?
rope or cable used for hoisting and lowering the fly sections of an extension ladder
What is the purpose of the heat sensor label?
helps indicate that the ladder has been exposed to a sufficient degree of heat
What are the hooks?
curved devices near the top end of roof ladders securing the ladder to the roof
What are the pawls? (dogs)
used to hold the fly section in place after it has been extended
What are the protection plates?
strips of metal attached at chaffing points of the ladder
What is the pulley?
grooved wheel through which the halyard is drawn on
What are the rails?
two lengthwise members of a trussed ladder
What are the rungs?
cross members that provide the foothold
What are the stops?
wooden or metal pieces preventing the fly section from being extended too far
What are the tie rods?
metal rods located beneath the rungs on a wood ladder
What is the tip?
very top of the ladder
What is the truss block?
spacers between the rails of a trussed ladder
What are fire service ground ladders made of?
metal, wood, or fiberglass
Which is the most common used ladder in the fire service?
What is the oldest material used for fire service ground ladders?