This document provides an overview of rope rescue techniques presented by the WPAFB FD. It discusses rope types, knots, anchoring, mechanical advantage systems, and basket operations. Static and dynamic ropes are described along with their strengths and uses. Common rescue knots like the figure eight, clove hitch, and bowline are demonstrated. Proper rope inspection, care, and retirement are covered. Anchoring techniques like pickets and critical angles are explained. Mechanical advantage systems like Z-rigs, block and tackles, and their uses are summarized. Stokes basket operations including packaging and lowering a patient are outlined. Considerations for trauma patients involving blunt force injuries and falls are presented. Personal protective equipment and safety protocols for
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2. Objectives
• Demonstrate the following:
• Knowledge of rope types & strengths
• Tying basic knots
• Knowledge of rope software & hardware
• Knowledge and use of anchoring points
• Constructing mechanical advantage systems
• Basket operations
3. References
• NFPA 1983, Standard on Fire Service Life Safety
Rope and System Components, 2001 Edition
• Rescue Technician Instructor Guide, Department
of Defense Fire Academy
• Fire Service Rescue, Sixth Edition, IFSTA
• NFPA 1670, Standard on Operations and Training
for Technical Rescue Incidents, 1999 ed.
• NFPA 1006, Standard for Rescue Technician
Professional Qualifications, 2001 ed.
• PHTLS, Mosby, Fourth Edition
4. Ropes Used In Rescue
• Static Kern mantle
– Fiber bundles run parallel
– Stretches no more than 20%
– Known as “low-stretch rope”
• Dynamic Kern mantle
– Made of twisted strands
– Stretches as much as 60%
– Known as “high-stretch rope”
6. NFPA Rope Classifications
• Class 1 (Light use) – One person life safety
rope w/ > 300 lbs working strength
• Class 2 (General use) – Two person life safety
rope w/ > 600 lbs working strength
• Note: Life Safety Rope must have an internal
tracer tape indicating compliance
7. Inspection and Care
• Use manufacturer's recommendations
• Inspect by looking and feeling
• New ropes inspected and a rope log created
• Rope should be retired based on experience and good
judgment, used in conjunction with education
• Store IAW manufacturer’s recommendations and to avoid
degradation from the environment
sun, heat, exhaust, acid, hot concrete
• Rope can be washed by hand with a commercial rope
washer or in a laundry machine
8. Basic Rescue Knots
• Overhand Safety Knot
• Used with all other knots
• Water Knot
• Used to join two ends of webbing
• Bowline
• Used as a Rescue Knot or to hoist tools
9. Basic Rescue Knots
• Clove Hitch
• Used secure a rope to an object
• Around an object
• Over an object
• Double Fisherman
• Used to create a prussic hitch
10. Basic Rescue Knots
• Figure Eight Knot
• On a bight – around an object
• Follow through – around an object
• Double loop – for a dual anchor point
• Inline – as a anchor point
12. Associated Software &
Hardware
• Webbing
– Flat or Tubular
– Used in place of or with rope
– Strength
• 1” = 4,500 lbs tensile
• 2” = 6,000 lbs tensile
13. Associated Software &
Hardware
• Harnesses
– Constructed of sewn webbing
– Types:
• NFPA/ANSI Class I – seat style for emergency
escape
• NFPA Class II/ANSI Class IV – seat-style for
rescue
• NFPA/ANSI Class III – full body
– Note: Only full body harnesses should be used when
there is any likelihood that the rescuer will be turned
upside down
14. Associated Software &
Hardware
• Carabiners
• Constructed of steel or aluminum
• Used to connect rope/webbing to objects
• Types & Strengths:
• Steel – 6,700lbs tensile
• Aluminum – 5,500 lbs tensile
• Figure Eights
• Constructed of aluminum
• Used for descent control
• 20,000 lbs tensile
15. Associated Software &
Hardware
• Ascenders
• Constructed of aluminum
• Used for descent control and climbing
• 2,500 lbs tensile
• Pulleys
• Constructed of aluminum
• Used for mechanical advantage systems or change
of directions
• May be single or multi sheave
16. Associated Software &
Hardware
• Prussic cords
• Formed using 6 to 9mm kern mantle rope
• Ends connect using a double fisherman knot
• Used in place of an ascender
• Slings
• Formed from nylon webbing w/ sewn in loops
• Used to secure rope to an anchor point or object
being moved
17. Anchor Points
• Selection
– Fixed object (Railing or I beam)
– Apparatus (Sturdy components)
– “BFR” very big rock
– Picket system (difficult)
– Always have a second/separate anchor point
for the backup line
18. Picket Anchor System
• Each point has an approx. rating of 350 lbs
• Lash from the top of the front picket to the
bottom of the next one working backwards
19. Anchor Points
• Types:
– Single point
• Tensionless hitch
• Wrap 3 - Pull 2
• Figure eight follow through
• Commercial straps
• Never use a girth hitch
21. Anchor Point Critical Angles
•For safety, 90 degrees is the maximum preferred angle, 120 degrees should NEVER be
exceeded
•Any angle in an anchor system will increase the loading on anchors and other element of
the system
•Factors for the angle formed by the legs of the anchor in a two point anchor system
30 degrees = 0.52
60 degrees = 0.58
90 degrees = 0.71
120 degrees = 1
150 degrees = 1.94
180 degrees = 12
22. Redirect Critical Angles
• The greater the angle of the re-direct, the less the force exerted on it
• Never <90 degrees
• Should be >120 degrees
Factors for the angle of the re-direct
150 degrees = 0.52
120 degrees = 1
90 degrees = 1.4
60 degrees = 1.73
0 degrees = 2
24. Fall Factors
Fall Factor = the distance fallen divided by
the length of rope used to arrest the fall
A fall factor of .25 is preferred
Fall factor = 20 feet of fall / 10 feet of rope
Fall factor = 10 feet of fall / 10 feet of rope
25. Mechanical Advantage
Systems
• Mechanical Advantage – the relationship
between how much load can be moved, to the
amount of force it takes to move it
• Simple – 2-1, 3-1 (modified Z-rig), 4-1 (block
& tackle), 5-1 (modified Z-rig)
• Compound – using two simple systems together
multiply the advantage (3-1 & 3-1 = 9-1)
• The two most used systems are the 3-1 (modified
Z-rig) and the 4-1 (block & tackle)
31. Stokes Basket
Secure the victim with webbing harnesses
Lash the basket from the bottom to the top
with webbing or rope
32. Basket Lowers
• Used when a victim is injured or unwilling
to perform a pick-off
• Requires teamwork and practice
• Victim needs to be packaged
• Lowering device should be a “general use”
brake bar rack for any two person load
33. Basket Lowers
Safety factors
• Higher weight loads and complexities
• System safety checks
• 3 person checks (1 being the Safety Officer)
• More people involved
basket tenders, edge tenders, brake operators, belayer,
team leader, haul captain, safety officer
Position of basket for lower
• Horizontal
• Vertical
34. Basket Lowers
Single line lower with a belay
• One main line, one belay line for litter
• One litter tender
• Advantage: simpler rope work and brake
management
35. Basket Lowers
Double line lower
• May simplify rigging
• Makes using a second tender easier
• Beneficial when it’s necessary to negotiate litter through
obstacles or confined spaces
• Allows easy changeover from horizontal to vertical
37. Basket Lowers
Tag lines - preferred over tenders
To position litter in a confined space
Prevent snagging on overhangs
Holds litter away from the wall
Stops spinning in free-hanging operations
Helps get the litter over the edge
38. Patient Care - Trauma
Laws of Energy
Newton’s first law of motion – A body at rest will remain
at rest and a body in motion will remain in motion unless
acted upon by some outside force. Examples: the ground or
gravity etc…
Newton’s law of conservation of energy – Energy cannot
be created or destroyed but can be changed in form. Types
of energy: mechanical, thermal, electrical & chemical.
Examples: Transfer of energy during a car accident.
39. Patient Care - Trauma
Kinetic energy is a function of an objects weight/ mass and
speed/velocity
KE=M/2 x V2
Examples: 150lbs @ 30 mph = 67,500 KE units
160lbs @ 30 mph = 72,000 KE units
150lbs @ 40 mph = 120,000 KE units
Velocity/speed increases the production of KE more
then mass
40. Blunt Trauma injuries
Two forces involved:
shear (tearing)
compression
Both result from one organ or object
changing speed faster then another organ or
object
41. Blunt Trauma injuries
Body system injuries
Head
Neck
Direct in-line compression – crushes the vertebrae
Hyperextension – from neutral backwards
Hyperflexion – from neutral forwards
Lateral flexion – side to side
Rotation
42. Blunt Trauma injuries
Body system injuries
Thorax – The sternum receives the initial energy
exchange and the internal organs continue to move until
they strike the inside of the chest cavity.
Aortic tear (partial or complete)
80% die on scene
1/3 of remaining 20 % die in either 6 hrs, 24 hrs or 72+ hrs
Pneumothorax (tension)
Flail chest – 2 or more broke ribs in 2 or more locations
Cardiac contusion
Lung contusion
43. Blunt Trauma injuries
Body system injuries
Abdomen
Kidneys, spleen, small and large intestines
Liver - The Ligamentum Teres (remnant of the
uterine vessels) attaches to the anterior
abdominal wall at the umbilicus and to the left
lobe of the liver
Pelvic injuries
Diaphragm
44. Falls
Height of fall (including the patients’ height)
Velocity increases with height
Landing surface
Compressibility (ability to deform by energy transfer)
What hit first?
Feet – Bilateral heel bone, ankle or distal Tabular/fibula fractures
Legs - After the feet stop, the legs absorb the energy = knee, femur
and hip fractures
Spine – Flexion causes compression fractures to the thoracic and
lumbar area from weight of head and torso
Hands – bilateral wrist fractures
Head (shallow diving injury) – All the weight from the moving
torso, pelvis and legs are focused on the head and cervical spine,
compressing and fracturing the c-spine.
45. Safety Essentials
Personnel Protective Equipment
Fall protection for all personnel working in
elevated positions
Redundancy
Safety Checks
Safety Officer
46. Practical Exercises
Station 1 - Knots and anchoring to objects
• Have each student tie the following knots with safety knot
– Water knot
– Bowline
– Clove Hitch
– Clove Hitch around an object
– Clove hitch over an object
– Split clove hitch
– Figure Eight family
• Figure Eight - on a bight
• Figure Eight - follow through
• Figure Eight - double loop
• Figure Eight - inline
– Double fisherman
• Have each student demonstrate the following methods of anchoring to an object
– Single point with rope and webbing
– Tensionless with rope
– Multiple points
• NOTE: The knot tying and anchoring can be done in conjunction with one
another.
47. Practical Exercises
Station 2 - Constructing mechanical advantage systems
• Divide the students into groups of no more than three
or four and have each group demonstrate reeving each
of the following using both prussic cords and ascenders
– Z-rig
– 4-1
• Have the students demonstrate using the Z-rig to move
an object
48. Practical Exercises
Station 3 – Patient packaging
• Stokes Basket
– Construct harness with webbing
– Lash patient into basket
• Miller Half-back
– Secure patient using all straps provided