General Rigging

Powered Winches and Tripods

Powered Winches and Tripods   We are seeing an interesting collision of techniques: Standard triangular pyramid tripods used for confined space rescue Asymmetrical multi-pods used for technical rope rescue and rope access Powered winches   Confined space operators have long been using symmetrical tripods with frame-mounted manual winches. These are normally set up over a …

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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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Marginal Anchors | Anchor Considerations in Rope Rigging Systems Vol. 2

Marginal anchors in theory create a force out of many, but how should we present this diverse and sometimes controversial concept of anchor construction?  This is an introduction to multiple back-ties and projecting the power of substantial anchors to a single focal point. Marginal anchors are generally considered independent anchors points that would not support …

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Bombproof Anchors | Anchor Considerations in Rope Rescue and Rigging

Excerpt from Anchor Considerations in Rope Rigging Systems Vol. 2 Segment 2 What is a bombproof anchor and what are some methods of rigging anchors? Bombproof anchors can hold it all… but does this principle apply in high directional anchors such as tripods, “A” frames, and gin poles? Questions of this nature are addressed in …

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Force Multipliers and What Are They?

To understand rigging is to understand at least some aspects of trigonometry and vector physics. The knowledge of angles, components, and resultants is synonymous with quality rope rigging. To study vectors is to study the physical qualities of force that has both direction and magnitude. There are two important distinctions we make in quantifying attributes …

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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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A Little Known Tool That Is Making Huge Headway… The Inside 9 Mechanical Advantage System

Over the last year or so I have been trying to up my rigging game with the main focus being “rigging light, rigging quick, rigging solid and rigging efficient”.  I will be the first to admit that all for all of this to happen at the same time it is a special day. I will …

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Highline Anchors Featuring Removable Bolts

This piece is from the RLA course Highline Sections with Tom Woods What we’re going to look at next is the actual anchoring system for the Highline that we’ve just done. It’s a little bit unique setup in that we’ve done all of our anchoring for everything off of removable bolts. Given the area where …

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A Quick Look at Two Tension Rope System and a Dynamic Directional Offset using Two Artificial High Directionals

The Purpose (Vision) We have always encouraged experimentation and creativity when learning.  I do my best to take the advice of people I respect.  The other day I sat in the studio thinking about some unused space we have and decided to build a test piece… a small slot canyon where a hiker needed to …

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