There is no one definition that characterizes all complex systems due to their greater diversity. Complex pulley systems are characterized by being neither simple nor compound. Compound pulley systems are useful because they can provide greater MA than simple systems for the same number of pulleys, thereby reducing overall friction loss for the same MA. Compound pulley systems are characterized as one simple pulley system pulling on another simple pulley system the traveling pulleys travel towards the anchor at different speeds. The tension in the rope remains the same throughout the pulley system. All pulleys at the anchor side of the system remain stationary. Simple pulley systems are characterized by having one continuous rope flowing back and forth alternately between the pulleys on load and the anchor (or the anchor and the load), and all pulleys at the load side (referred to as traveling pulleys) travel towards the anchor at the same speed. What is the disadvantage or short fall of a mechanical advantage?(the bigger the MA the more rope used to move load a short distance) 3. What is a mechanical advantage? Enables a rescuer to lift a load applying less force than the load itself, but over a longer distance.
Load Sharing Anchor (multi anchors overhand knot to make load pull at certain point) 5. Single Point Anchor (wrap 3 pull 2, basket hitch) 3. Trees, vehicles, rocks, posts, guardrails, etc.
Knots Overhand Figure 8 Figure 8 on Bight Figure 8 follow through Directional Figure 8 Butterfly Bowline with Safety Double sheet Bend with Safety Webbing- Water bend, Overhand Hitches- Munter, Load release Prusik- Double fisherman ' s, 3 wrap D. Litter Harness with 4 steel carabiners bs./44kn C. 4:1 Mechanical Advantage 'W' static kernmantle 99001bs./44kn 9. Pulleys: 2.5" prusik minded, 2" single pulley bs.136kn 7. Rescue 8 with ears: Used for one person self lowers 8093+Ibs./36+kn 6. Carabiners: Steel and Aluminum locking bs./72kn 7000lbs./30kn 5. Prusik Cord: 7mm and 8mm 22001bs./lOkn bs./12kn 3.
Personal equipment- seat harness, the proper level of PPE should be worn by all entry and back-up personal, helmet, gloves, proper boots. Where do we need to use aerial pick-offs? Give examples Equipment: A. Where do we need low angle rescue? Give examples B. Litter operations using the aerial as a means to remove a victim from a elevated incident requires preplanned tactics to overcome the dynamics of the operation. These techniques are usually used by fire departments and mountain rescue teams for over an embankment, or mountain rescue situations. 1 Low Angle Rope Rescue Outline Low angle rescue techniques differ from high angle skills in more rescue personnel at risk on the litter, more tension on the ropes, but less potential for free falls during a major system failure.
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