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Commercial Tree Care and Climbing
Load ratings of climbing equipment?
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<blockquote data-quote="pdqdl" data-source="post: 2221249" data-attributes="member: 22041"><p>Ok, I apologize.</p><p></p><p>When I posted earlier about Dan Osman, I got to thinking about his spectacular free-fall jumps and I completely forgot about Moray's 30 foot fall restriction. Sorry about the confusion I may have introduced.</p><p></p><p>Nonetheless, I don't think falling 30 feet on a 300 feet of doubled arborist line would be any fun either. In fact, I'll bet it would hurt a whole bunch. </p><p></p><p>This is a wild guess, since I don't want to take the effort to do the math: That would be falling 10% of the rope distance into an approximate 3% stretch (assuming that you are somewhere near the 20% of breaking strength rating of the rope). Fall 30', stop in 9', putting a force of close to 3000 lbs on a doubled rope. Oooohh, my aching back!</p></blockquote><p></p>
[QUOTE="pdqdl, post: 2221249, member: 22041"] Ok, I apologize. When I posted earlier about Dan Osman, I got to thinking about his spectacular free-fall jumps and I completely forgot about Moray's 30 foot fall restriction. Sorry about the confusion I may have introduced. Nonetheless, I don't think falling 30 feet on a 300 feet of doubled arborist line would be any fun either. In fact, I'll bet it would hurt a whole bunch. This is a wild guess, since I don't want to take the effort to do the math: That would be falling 10% of the rope distance into an approximate 3% stretch (assuming that you are somewhere near the 20% of breaking strength rating of the rope). Fall 30', stop in 9', putting a force of close to 3000 lbs on a doubled rope. Oooohh, my aching back! [/QUOTE]
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