Ladders Flashcards
What types of ladders does the Ventura County Fire Protection District utilize?
Aluminum folding ladders, roof ladders, extension ladders, aerial ladders
Aerial ladders are used to access areas that portable ground ladders cannot reach.
What is the material used for the aluminum ladders by DuoSafety?
6061 T6 Aluminum
What is the duty rating of the aluminum ladders?
750 lb Duty Rating
At what temperature do the heat sensors on the ladders change color?
300 degrees
What is the rung spacing on the aluminum ladders?
14” on center
What is the diameter of the rungs on the aluminum ladders?
1.25 inches
How many serrations are there per rung on the aluminum ladders?
20 serrations
What is the optimal climbing angle for ladders?
75 degrees
What is the minimum climbing angle for ladders?
68 degrees
What is the minimum number of rungs over the roof line recommended?
3 rungs minimum, 5-7 preferred, 7 maximum
What should be the distance from the top of the ladder to electrical lines?
10ft
True or False: A 14’ extension ladder can be thrown by 1 firefighter.
True
What is the reach of a fully extended aerial ladder?
105’, effective reach of 7 stories
What weight does a 10-foot attic ladder have?
16 pounds
What is the rated weight capacity of a 10-foot attic ladder?
300 lbs
Fill in the blank: Ladders should be cleaned and inspected after every _______.
use
What should be inspected for damage on the ladders?
Loose or cracked rungs, hairline fractures in beams, damaged lock mechanisms, condition of pulleys and halyard, condition of heat sensors
How often should paraffin wax be applied to sliding surfaces on ladders?
Every 3 months
What cleaning method is not recommended for ladders?
Use of power tools
What is the purpose of the 4-digit county ID on ladders?
Identification
What is the maximum weight a 20-foot roof ladder can support?
1 firefighter at the tip
What type of ladder weighs 129 pounds?
35 Foot Extension - 3 Section Solid Beam
What is the beam width of a 24-foot extension ladder?
3.25 inches
What is the closed length of a 35-foot extension ladder - 2 Section Truss?
20 feet
What should be done if a ladder needs to be sanded?
Use wet/dry type paper no coarser than 400 grit
True or False: Ladders must pass a hardness test if the heat sensor is turned, damaged, or missing.
True
What is the purpose of the 1-inch yellow tape on ladders?
Indicates balance point
What is the recommended method to remove old paraffin wax from ladders?
Medium steel wool
What should be used to lubricate pulleys and lock assembly pivot points?
White lithium grease
What is the rung wall thickness?
.065 Inches
