International Technical Rescue Symposium

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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rigging learning blog

From Stephen Attaway for ITRS: Track Lines and Guiding Lines: Forces Based on Point Loads in a Catenary

In Track Lines and Guiding Lines: Forces Based on Point Loads in a Catenary, Stephen Attaway says, “The scope of this paper is limited to providing a better understanding of how to predict sag, tension, forces, and possible hazards.” This research was originally presented at the International Technical Rescue Symposium (ITRS) in November of 2013,

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From Larry Walters for ITRS: Modern Day Belay Testing

From Larry Walters for ITRS: Modern Day Belay Testing

The CMC MPD has literally changed the way riggers have thought about “systems”.  The lightning rod idea, first envisioned by Kirk Mauthner of Basecamp Innovations, was a work in progress for many years. Once prototypes were completed, the risks heightened! Would teams and personal embrace or reject the concept. Well, the answer was a resounding YES! Sure, it

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