Ok, the webpage I referred to get the fall factor of 2.3 was incorrect. 2 is the max that can be achieved. But my point still remains, after correcting for the 2.3 back to say 1.8, you end up with a safety margin of 9. I weigh about 100kg, not 80kg, so that will cut my safety margin and if I was doing a recue, that margin would be further cut by 50%. Potentially you could have an extremely low safety margin.
I fully admit that the likely hood of a rope braking is low during a fall, but the potential does exist, particularly if the rope is not well maintained and regularly inspected. |