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Topic Date User

Slackline - fatigue effects on biners? 15-Jun-2010 At 8:50:41 PM alg

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On 15/06/2010 mikllaw wrote:
>I think the loads might be much higher, if I wasn't jet lagged I'd work
>it out, but I saw some bolts that a slackline had been clipped to, looked
>more like 10 kN at a guess.
>
>If the angle in the slackline is 170 degrees, the multiplication is about
>12. There isn't much dynamic laoding (the stretch in the system takes care
>of that) so lets assume your bodyweight plus a bit of dynamic load = 1
>kN, that's 12 kN straight off.

Yeah, i calculated 2.8kN for a 100kg person with a 10degree sag in the line. The dynamic load all depends on how far you assume it to give, if a 100kg person jumps and lands with stiff legs (which they probably won't) and the line only gives 30cm the load could be up around 15kN.
considering the bolts you saw i might just buy some steel biners though...

cheers