An understanding of mechanical advantage systems — in raising and lower modes — is crucial to all rope rescue technicians. Dealing with Mass and Force is aspects of consequence if not considered during operations. Working with tensioned anchor systems, guying systems, high directionals, load positioning and litter movement all come into play when building mainline systems.
If these are areas of interest to you — or simply areas in your rigging and rope rescue knowledge that you’d like to strengthen — this course is for you.
Unit 1: How Forces Are Generated
Unit 2: Mechanical Advantage and Pulley Systems
Unit 3: Moving Systems
Unit 4: Lowering Systems Low to Mid Angle
Unit 5 Lowering Systems – Mid to Steep Angle
Unit 6: Twin Tension Rope System
Unit 7: Winch & Capstan
Unit 8: Wrap Up
How Forces are Generated and How Best to Analyze the System
So while there are many interchangeable terms systems, what you’ll see here in this course will be what we deem appropriate for our curriculum, but nothing more than that. Having said that, not all systems are equivalent in that a 3:1 MA system in type or configuration, may not be a 3:1 MA inefficiency, meaning theory vs practical. Without further ado, let’s get started!
This course, Mainline (or Rescue Systems) and Operations, will encourage technicians to break down their “work” and thus systems into the following segments. Not every system that is set up will contain every segment. The goal is to create an environment the majority of the most called upon systems are built and analyzed in such a manner that when called upon – there is no guesswork. You know how the system will perform and what to be mindful of should conditions or other factors come into play.
- Twin Tension Systems
- Belay Systems (when not using a TTS)
- Lowering Systems
- Raising Systems and Mechanical Advantage
- Reversing A System
- Knot Pass Through a System
- Analyzing the System
This course is designed as an overview of topics and elements that will be examined in greater detail. As you can imagine, raise and lowering systems, twin (two) tension systems, and mechanical advantage are expansive and deserve their own place within the course lineups.
So let’s jump into “working the plan”… And as with all teaching methods, we’ll endeavor to have as many options and manners of consideration in order to develop the best comprehension… not everyone learns in the same way nor at the same rate.
Mechanical Advantage Theory
Terms and definitions of mechanical advantage systems
Types of pulley systems
How and when to use Long Line MA Systems
How and when to use Block and Tackle Systems
Calculating tension force using the T-Method
Peace on your Days