Forums: Climbing Disciplines: Slacklining:
those stupid multiple lines savin me?
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j-tha-b
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Mar 3, 2004, 7:52 PM
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those stupid multiple lines savin me?
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QUESTION: when setting up a highline i heard people talking about a bunch of lines being taped together but anchored at different tensions. I was wondering how this works. cause it has me stumped. but yeah. ive got one set up but no highlines yet so could somebody explain the whole system so i can at least get the drift. from there i should be able to figger it out. maybe become a statistic in the process. peace out all


overlord


Mar 4, 2004, 12:40 AM
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Re: those stupid multiple lines savin me? [In reply to]
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that is the standard procedure for rigging highlines. you got at least three lines glued together.


sheldonjr


Mar 6, 2004, 11:38 AM
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Re: those stupid multiple lines savin me? [In reply to]
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I think I understand your question...

The forces on a slackline are calculated by the angle of sag when weighted in the middle. To get less sag, (a smaller angle) you need to put more force put on your line. But you wonder, "If all three lines are at the same angle, just taped together... How is it that all three won't bust at the same time?"

Because webbing isn't truely static. Few things are.

The forces applied to your line, in reality, are: The force caused by your weight, PLUS the initial rigging force (tightening your line). Since your backups don't have as much rigging force as the initial line, they're less likely to fail. Not only that but, they'll also be loaded at a steeper angle. REALLY cutting down on the load.

Hopefully this helps, and doesn't totally confuse everyone.


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