chapter 14 copyright © 2007 thomson delmar learning 14.1 ladders
TRANSCRIPT
CHAPTER
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14.1Copyright © 2007 Thomson Delmar Learning
Ladders
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14.2Copyright © 2007 Thomson Delmar Learning
Objectives (1 of 3)
• Name the parts of a ladder.• Describe the many functions for which a
ladder can be used. • Name the different types of mounted
ladder apparatus.• Describe the function of the different types
of ground ladders.• Describe the care of ladders.
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14.3Copyright © 2007 Thomson Delmar Learning
Objectives (2 of 3)
• Cite maintenance, cleaning, and inspection functions of ladders.
• Exhibit ladder operation safety.• Name different types of ladder uses.• Describe the ladder selection process.• Describe the concepts behind different
ladder-raising techniques.
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14.4Copyright © 2007 Thomson Delmar Learning
Objectives (3 of 3)
• Cite safety concerns of ladders and their use.
• Demonstrate skills associated with ladders.
• Describe fundamentals of ladder placement.
• Determine how far away from a building a ladder should be placed.
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14.5Copyright © 2007 Thomson Delmar Learning
Introduction
• Ladders are used for many purposes besides providing access to elevated locations.
• Ladders were originally constructed from wood; now truss type beams are used.– Truss construction allows for stronger and
lighter ladders.
• Continuous advances allow for ladders of various sizes and uses to be developed.
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14.6Copyright © 2007 Thomson Delmar Learning
Ladder Terminology (1 of 2)
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14.7Copyright © 2007 Thomson Delmar Learning
Ladder Terminology (2 of 2)
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Ladder Companies• Apparatus carrying ladders and other devices,
tools, and personnel
• Tower ladders and articulating boom ladders
• Ladder company tasks include:• Forcible entry• Search and rescue• Roof access• Ventilation
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14.9Copyright © 2007 Thomson Delmar Learning
Aerial Ladder (1 of 2)
• Apparatus-mounted ladder reaching 100’-110’
• Designed so various sections slide out from one another
• Bed attached to a turntable
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Aerial Ladder (2 of 2)
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Tower Ladder
• A telescopic boom with mounted basket
• Helpful to remove many victims
• Very versatile piece of equipment
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Articulating Boom Ladder
• Uses basket with articulating booms
• Capable of placing bucket into hard to reach places
• Also known as snorkel ladder
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Types of Ground or Portable Ladders
• Straight • Extension • Roof or hook• Folding • A-frame combination• Pompier
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Straight Ladder
• A fixed length ladder
• Range from 12’ to 20’
• Can usually be carried and raised by one person
• Used for access, ventilation and escapes
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Extension Ladder
• Two or more ladders operating as a unit.
• May have two or more fly ladders.
• Halyard used for extending ladders.
• Ladders over 40 feet have stay poles.
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14.16Copyright © 2007 Thomson Delmar Learning
Roof Ladder
• Straight ladder with retractable hooks at tip
• Used when operating on a sloped roof
• Hooks placed over the ridge of roof
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14.17Copyright © 2007 Thomson Delmar Learning
Folding (Attic) Ladder
• Enables access into narrow and confined spaces
• Length of 8’ to 16’• Collapsible feature• Ideal ladder to reach
sprinkler shutoff
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14.18Copyright © 2007 Thomson Delmar Learning
A-Frame Combination Ladder
• Can be used in various configurations.
• Fly ladder can be manually raised.
• Can be used as step ladder.
• Works well in tight places.
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Pompier Ladder
• No longer an approved ladder
• Was used as hanging ladder to climb up
• Ladder raised manually to window levels
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Maintenance, Cleaning, and Inspection
• Fire service ladders warrant special attention.• NFPA 1931
– Ladder needing repair must be taken out of service.
– Detailed maintenance records should be kept of required inspections.
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Cleaning Ladders
• Dirt and grime can negatively affect ladder operation.
• During cleaning, ladders should be inspected closely.
• Follow manufacturer’s recommendations on cleaning.
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Ladder Safety (1 of 2)
• Use common sense.• Overloading ladder limits is the most common
cause of ladder-related injuries.• Ladder placement is a critical element.• Ladders should not be in front of lower floor
window or door.• Use of correct ladder is important.
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14.23Copyright © 2007 Thomson Delmar Learning
Ladder Safety (2 of 2)
• Be careful of overhead wires.
• Always keep three limbs in touch with the ladder.
• Always have someone butt the ladder.
• Always use a safety belt or leg lock when working off a ladder.
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14.24Copyright © 2007 Thomson Delmar Learning
Ladder Uses (1 of 2)
• Used primarily for climbing• Can provide a path to heights• Can be used to descend or as a bridge• Commonly used for rescue• Provides stability while working on sloped
roof• Can be used to remove glass
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14.25Copyright © 2007 Thomson Delmar Learning
Ladder Uses (2 of 2)
• Can be used to support weight.• Water can be applied from a ground ladder.• May reach areas where apparatus
mounted appliances may not reach.• Can serve as an exterior work platform.
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Ladder Selection Considerations
• Ground conditions• Height needed• Purpose• Slope of ground• Accessibility of
location
• Available personnel• Overhead
considerations• Raising space
considerations• Stability
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14.27Copyright © 2007 Thomson Delmar Learning
Raising Skills—Concepts
• Heel of ladder must be a certain distance from the building for stability.
• Safest climbing angle is about 75 degrees.
• Prior to climbing, determine proper distance for ladder from building.
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Raising Ladders
• Two-person raise
• One-person raise
• Beam raise
• Rung raise
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14.29Copyright © 2007 Thomson Delmar Learning
Special Uses
• Removal of numerous victims
• Chute with a tarp• Over a fence• Elevated hose
stream• Portable pool
• Barrier• Supporting of falling
sign• Forcible entry• Hoist point• Ventilation fan
supports
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14.30Copyright © 2007 Thomson Delmar Learning
Multiple Victim Removal
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14.31Copyright © 2007 Thomson Delmar Learning
Chute with a Tarp
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Climbing Over a Fence
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Portable Pool
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Ladder as a Barrier
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Ventilation Fan Support
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Ladder Safety
• Electrical lines• Climbing path• Overhead obstructions
• Uneven ground• Ladder load• Working off a ladder
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Miscellaneous Points• Ladder storage
• Apparatus ladder storage
• Ladder apparatus parking
• Ladder painting
• Certification and testing procedures
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Ladder Skills (1 of 3)
• Suitcase carry
• Shoulder carry
• Flat carry
• Single
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Ladder Skills (2 of 3)
• Carrying victims
• Two-person raises– Rung raise– Beam raise
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Ladder Skills (3 of 3)
• Fly extension raise
• One-person raise
• Leg lock
• Carrying tools
• Mounting/dismounting
• Roof ladder deployment
• Hoisting ladders by rope
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14.41Copyright © 2007 Thomson Delmar Learning
Summary
• Ladders have many applications.
• Different types of ladders are designed for specific uses.
• New designs are always being developed.
• Must use common sense.
• Maintenance duties, inspection, and documenting results are important.