Ladders Flashcards
What are the dimensions of the 9m ladder?
Ext length 9m Closed length 5.3m Weight 56k 550mm width Depth 185mm
Where is the 9m ladder mounted?
On a beam gantry on the roof of the appliance
What is the AAD and what is it for?
Automatic Arrester Device (found on 9m and 13.5m ladders)
The AAD will operate when the extending line has been released and the extended portion of the ladder is about to fall uncontrollably.
What are the double action automatic pawls?
Found on the 9m and 13.5m ladders. They lock the ladder into position to keep the required height
What are the dimensions of the 13.5m ladder?
102 - 113kg
6m closed length
Width 800mm
Depth 320mm
What are the dimensions of the triple extension ladder?
Weight 24.6k 6m extended length 2.4m closed length 410mm width 162mm depth
What are the dimensions of the roof ladder? (JCDD 31)
Weight 16kg 5.4m extended length 3.2m folded length 327mm width 360mm depth
Ladders are carried on all appliances to enable fire crews to gain access to buildings and structures during an incident. What are other uses for ladders?
Step ladder
Replacing collapsed staircases
A stretcher
Construction of a dam
Terminology - extend
To raise an extending section
Terminology - extend to lower
To clear the pawls
Terminology- heel in / heel out
Move the heel of the ladder in a controlled fashion into or away from the building
Terminology - house
To retract an extending section / to reduce the overall length of a ladder
Terminology - pitch
To erect a ladder against a building
Terminology - slip
To remove a ladder from an appliance
What JCDD regulations does the 13.5m ladder comply with?
JCDD 12
What JCDD regulations does the 9m ladder comply with?
JCDD 37
What JCDD regulation does the triple extension ladder comply with?
JCDD 32
What JCDD regulation does the roof ladder comply with?
JCDD 31
What is the correct term for the extending line of a ladder?
Halyard
On the 9 & 13.5m ladders, what locks the ladder in position to maintain the required height?
Double action automatic pawls
What is the correct sequence of orders when making up the 13.5m ladder with a straight pitch?
Head out
Extend to lower
Well lower
Well pawls
When pitching a ladder what distance must the heel of the ladder be from the building?
1/3 of the working height
How many parts does a roof ladder consist of?
2
What is used on the 13.5m ladder to keep it vertical?
Plumbing jack
What are the fundamentals when pitching a ladder?
Head should be 3-5 rounds above the window sill
Heel 1/3 of the working height away from the building
Reasonably straight with the heel/feet secure
Should be pitched all the way either left or right if the sill
What material are ladders made from?
Aluminium alloy
