Ladders Flashcards
Uses of ladders
Rescue - one of the most important uses, often the only way to get people out of two storey buildings.
Access - both above and below.
Ventilation - access ceiling space of roof.
Crawl-board - on fragile roofing or flooring.
Bridging - from one obstacle to another.
Describe a two step ladder
Aluminum 2 step ladder with slip resistant rungs.
Describe little jumbo telescopic ladder
Made from aircaft aluminum with an inner and 2 outers that telescope over the inner and slip resistant rungs.
Used as ‘A’ frame, extension or stairwell ladder.
Working heights:
Storage 1.4m
A frame 1.2 - 2.1m
Extension 2.7 - 4.5m
Describe the 9m extension ladder
Made from aluminum with non-slip ‘D’ rungs, weights 30kg with non-slip feet at the heel of each string.
Extend the sliding section by use of hauling line.
Pawls will engage as you extend, to lower extend until you trip the lowering device then lower with control.
Working heights:
Closed 5.0m
Extended 9.0m
Load rated to 324kg both horizontally and vertically.
3 person max with a 3:1 safety factor.
List the ladder components
Main section Sliding section Head Heel Non-skid feet Strings Rungs Hauling line Pawl Pulley Extension Stops
List ladder terminology
Slip Elevate Under-run Extend Pitch Heel in, Heel out Foot Strike Extend to lower Lower House
Ladder safe working practices
Wear a helmet Check for overhead obstructions Foot whilst partner is on ladder Tie of head of ladder Climb ladders briskly but smoothly
Describe a leg lock
Put your leg through the rung two above where you standing. Use back of knee to steady and foot if possible. Leg lock to the opposite side to where your working.
When to do maintenance checks on ladders
During morning equipment checks
After use at an incident
After drills
