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slackline failure
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linvillelover


Mar 10, 2008, 10:49 AM
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Registered: Oct 18, 2006
Posts: 43

slackline failure
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Do?, and how/ where do slacklines break?

my guess is that single strand of webbing is 4600 lbs breaking strength,

the singler locker on either end connecting to the anchor webbing is well over 4600 lbs strong. and the webbing doubled and wrapped around the tree on either end and clipped to the biner is at least 4x the individual strand strength, minus a little for the bend over the biner.

this leaves me to think the point of failure will be the clove hitch on the non pulley/ friction end of the line.

this is better than a biner flying with the broken portion, but how violently does this webbing break under tension?

is someone going to lose an arm when the webbing slingshots back?


am i wrong for worrying


kyleshea


Mar 10, 2008, 10:59 AM
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Registered: Dec 21, 2006
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Re: [linvillelover] slackline failure [In reply to]
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linvillelover wrote:
Do?, and how/ where do slacklines break?

my guess is that single strand of webbing is 4600 lbs breaking strength,

the singler locker on either end connecting to the anchor webbing is well over 4600 lbs strong. and the webbing doubled and wrapped around the tree on either end and clipped to the biner is at least 4x the individual strand strength, minus a little for the bend over the biner.

this leaves me to think the point of failure will be the clove hitch on the non pulley/ friction end of the line.

this is better than a biner flying with the broken portion, but how violently does this webbing break under tension?

is someone going to lose an arm when the webbing slingshots back?


am i wrong for worrying

broke a piece of webbing once, had a small hole in it and it finally snapped. didnt replace it originally due to laziness. it was a 20 meter line under tension, and although i was not on the recieving end of the webbing slap, it wasnt too bad. wouldnt expect it to break unless the webbing is compomised though.
also seen a biner snap on a line that had been under tension for a couple of months. it was a brand new locker when the line was rigged. luckily nobody got impaled by that one. back your system up and regularly inspect for problems. i do, now.


Partner slacklinejoe


Mar 10, 2008, 6:16 PM
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Re: [linvillelover] slackline failure [In reply to]
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Yes slacklines do break. The most common culprit I see are:
Extreme tri-loaded carabiners
Carabiners where the gates aren't shut
Webbing that gets heavily abraded from insufficent padding

For a typical line where it is not mounted permanently, UV, dirt and such are insignificant the big ones to watch for are abrasion or nylon on nylon melting. That said, incorrect usage of carabiners can result in far more spectacular failures but that can easily be avoided.


richardvg03


Mar 12, 2008, 6:46 AM
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Registered: Apr 13, 2007
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Re: [linvillelover] slackline failure [In reply to]
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My line popped on me while I was standing on it... the only thing that happen was i fell 2 feet to the ground and landed perfectly on my feet...


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