Search Results for: mechanical advantage

Team Rescue Techniques For Hauling and Lowering

Excerpt from Gear In Use 2: Techncial Rescue All maneuvers must be done on two independent rope systems. These two systems can work in parallel (two haul lines) or separately (work rope and belay rope).   Gear Within This Learning Lesson Petzl Maestro Petzl Jag System Petzl RollClip Petzl Rescucender  1. Examples of hauling with […]

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From John Morton for ITRS: What if Trees Had Ratings in kN? Tree Anchor "Ratings" Based on Wind Loading

From John Morton for ITRS: Tree Anchor “Ratings” Based on Wind Loading

What if trees had ratings? What an amazing concept. John Morton, an engineer-scientist-visionary-technician, has been doing canopy studies for years and knows how they are affected by wind. Trees, whether alone or in community, are all influenced by wind and all have a certain “wind rating” to them. When SAR members show up on scene, and

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Team Rescue Techniques for Hauling and Lowering with Petzl Maestro

All maneuvers must be done on two independent rope systems. These two systems can work in parallel (two haul lines) or separately (work rope and belay rope). 1. Examples of hauling with work rope and belay rope. All hauling and positioning forces are concentrated on the work rope. The belay rope is set up and

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Richard Delaney, founder of RopeLab

Mini Course Sneak Peek: Conversations in Rigging with Richard Delaney

Richard Delaney, the founder of RopeLab and curator of Rope Test Lab, brings you the essential rigging concepts in this Rigging Lab Academy mini course. Anchors, mechanical-advantage calculations, friction and managing edge trauma, and skate-blocks are all discussed in this mini course, which is available for free for all members of Rigging Lab Academy.

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