General Rigging

8 Defined Rescue Rigging Systems That Will Astonish The Entire Team… By Using Well Define Processes

When we developed ideas into courses, we considered many things.  Yes, we went through the SWOT analysis as well. Know this will get you What, Where, When, and How! Strengths Opportunities Weaknesses Threats I will let you reference this, however we went through all  4 elements before we engineered, designed, went to production and released …

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Vectors, Scalars, and Unit-less Values, Part 1

Full Video is at the bottom A force multiplier is any factor or condition that contributes to the overall stress of a rope system during a dynamic state. Rating this dynamic state or rope movement/stress is best represented as the Dynamic System Safety Factor (DSSF). In other words, what’s our weakest link during the operation …

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Dynamic Directional Offset System Using an A-Frame and Natural High Directional

Over time, we’ve found this style of deflection offset to be really fun. They have their limits, as with any system, but strength (when properly rigged and run) comes easy and we appreciate the versatility it offers. Large gaps or spans are typically the MO for dynamic directionals. We used a standard A-Frame configuration on …

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Petzl Maestro – An Amazing Tool For Technical Rescue Operations

PETZL MAESTRO (Small and Large) is a descender designed for technical rescue operations. It facilitates the manipulation of heavy loads, for lowering or hauling, and may be used in both the primary system or in a back-up belay. This versatility allows rescuers to adapt to any situation they may encounter on the rescue scene. The …

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Static and dynamic tests on the PETZL MAESTRO

The following tests were carried out in laboratories, with new devices and new ropes certified to current standards. Test results are given for information purposes only: they may be different with devices and/or ropes that are worn from use, or with other rope types or models. STATIC TESTS Slow-pull test carried out on different ropes; …

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Comparison between Petzl MAESTRO and PETZL I’D for a rescue using twin tensioned haul lines

MAESTRO and I’D allow for efficient hauling, releasing the lock at any time and a controlled lower of the load. The two devices have different ergonomics and different specifications (working load and efficiency). Hauling The MAESTRO’s efficiency enables effective use of simple pulley systems. If a complex pulley system is needed to increase efficiency, it …

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ANSI Z459.1 ROPE ACCESS AND TWO CONNECTIONS TO A SINGLE POINT

The following is from Loui McCurley/PMI Rope One of the  MYTHS being generated about the new ANSI Z459.1 standard that was recently published as part of the ANSI Z359 Fall Protection Code is that this standard has introduced a prohibition on attaching TWO DESCENDERS to a SINGLE CONNECTION POINT on your harness. Before addressing that …

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Two MAESTRO, I’D or RIG (used in parallel by a single operator)

The MAESTRO, I’D or RIG descenders can be used in parallel in rescue situations, mainly with long rope lengths and smaller rescue teams. This technique enables a single user to simultaneously operate two devices.   Advantages Even sharing of the load on the descenders Reduced potential extension of the system, in case one of the …

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Staggering Your Rigging Anchors Increases Efficiency But At What Cost?

Staggering rigging anchors is a perfect way to spread the mechanical advantage system over a broad area, while at the same time, using the area very efficiently.  The goal is to get as much “throw” as possible and to limit resets.   There are numerous ways to do this and these are only two of the …

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Elements of Rigging – Bombproof Anchors – Anchor Considerations in Rope Rigging Systems

So what is a bombproof anchor much less one using an artificial high directional such as the Arizona Vortex Multipod?  This question appears to stump, confuse and even frustrate many a rescuer and rigger.  When it comes to high directionals, the complexity is even more concerning.  It really shouldn’t though. Bombproof anchors have really two …

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