In reply to Moacs:
> (In reply to howlingbaboon)
>
> A bull African elephant weighs up to 6000Kg.
>
> An single sport rope is rated to about 9KN.
>
> So about 1.5, perhaps 2 if a) the safety margin on the rating gives some additional strength and b) the elephant had laid off the pies.
>
The rating of the rope is the max impact force, not it's breaking strain (manufacturers don't give the figures).
Mammut 10.5mm static ropes are rated at 30kN, climbing ropes are likely to be a bit less, so BS would be more like 25kN+.