Let’s continue with our pulley discussion. We have here a confined space rig, what I like to call it. It’s unique in that we have a tripod, and anybody who’s been around these things know they’re susceptible to tipping over, so it’s important, if you’re going to do something like this, that you have equal forces …
A Confined Space Rig: Anchors, Pulleys And The Haul Field in Rope Rigging Systems Read More »
Two Tension Rope Systems Background: As a rescue community, it is accepted as best practice to employ a two-rope system in order to best protect life safety. Most traditionally up to this point the dedicated main dedicated belay (DMDB) has been common practice. This employs a technique in which the full amount of the load …
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Thank You | The Foundations of Rescue & Rigging Anchor Systems eBook Read More »
I thought this was a super quick illustration to show how observation and proximity make a difference. The question, here is what is the mechanical advantage difference between a “ground hauler” or that of the “load hauler”. The significance is found in the frame of reference… the applied force to the input is what defines …
Mechanical Advantage: 2:1 or 3:1? – RLA Partner Richard Delaney of RopeLab Read More »
Determining mechanical advantage using the T-Method is really the guiding method to determine the “ideal mechanical advantage” or IMA. However, note… this method doesn’t take into consideration the friction problems or coefficient of rope bending or turning on metal. So what is mechanical advantage? Mechanical Advantage Definition 1 “A force created through mechanical means including, …
Go 0 to 60 In Your Understanding of Mechanical Advantage Read More »
I want to thank Steve Crandall for his work Rigging Rescue Concepts, from which some of this article is derived from. Grab his book here… Considered by many as advanced operations because highlines deviate in many ways from standard rope rescue rigging practices, building and using highlines requires a clear understanding of sound rigging principles …
A Quick Overview and Essential Checklists of Highline Systems Read More »
Fast Fours Mechanical Advantage System The Fast Fours is a simple variation on a standard set-of-fours. The difference is that the far end of the rope is not terminated on the becket of a pulley. Instead it is run through another progress capture pulley. This means that an operator can either pull on both ends …
Friction… It’s gravity’s most powerful accomplice. But do you know how to leverage it to your advantage? There is nothing more important than people’s lives hooked onto the rescue line, Technicians included! Rope rescue requires rigging skills to either move or hold things in place. As simple as this sounds, a complete working knowledge of …
Free 4-Part Video Mini Course: Managing Highline Mechanical Advantage Featuring These Top Instructors: Pat Rhodes on English & Norwegian Reeve Line Richard Delaney on Mechanical advantage & Edge Friction Learn How to Rig Highlines with Absolute Confidence!
This course covers the basic physics that apply to roping systems. This course should enable technicians to develop a deeper understanding and a sound approach to problem-solving. Considering force and tension as vectors and finding creative ways to apply these in the field makes it so much easier to define resultants and calculate mechanical advantage …
Advanced Rigging Physics: Vectors & Mechanical Advantage (Trailer)-Richard Delaney Read More »
