Chapter 6 Ground Ladders Flashcards
Why is it important to select carefully when purchasing ground ladders?
The types of ground ladders you purchase will affect fireground operations for 15 years or more
What is the NFPA recommended minimum for ground ladders carried by truck companies?
115 ft.
What two primary factors affect the maintenance of any ladder?
Frequency of use and
Adherence to NFPA 1932
According to the Consumer Product Safety Commission, what type of ground ladder is commonly associated with electrocutions?
Metal ground ladders
Why should ladders be properly spotted or shifted into the correct position before being raised?
Ladders are more easily and safely maneuvered on the ground. Additional movement of a vertical ladder increases the chance of losing stability and striking overhead obstructions
What are the two basic methods of raising ground ladders?
Flat and beam raise
What is the proper climbing angle for a ladder?
Approximately 70 degrees
What is the minimum number of ladders that should be placed to a building
Two
How can personnel extend their horizontal reach while working from a ladder?
Reposition the ladder, or lock in to the ladder with one leg
When laddering a fire escape, how far should the top of the ladder extend above the railing
Maximum of one foot
Metal ground ladders can suddently fail from loss of annealing when exposed to heat or flame as low as ____ degrees F.
200 Degrees
According to NFPA 1932, how often should ground ladders be visually inspected?
Monthly and after each use
How often should you inspect the varnish on wooden ladders?
When should you redo the varnish?
Inspect varnish every 6 months
redo annually—sooner if evidence of damage
What are the average service lines (120-240 volt) to a single-family home commonly insulated with?
Material rated at 600 volts
When raising ground ladders, what ladders should generally be raised 1st?
the largest ladder, requiring the most personnel
