Why the 8 kN impact force for half ropes? - Petzl Luxembourg
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Why the 8 kN impact force for half ropes?

Warnings

  • Carefully read the Instructions for Use used in this technical advice before consulting the advice itself. You must have already read and understood the information in the Instructions for Use to be able to understand this supplementary information.
  • Mastering these techniques requires specific training. Work with a professional to confirm your ability to perform these techniques safely and independently before attempting them unsupervised.
  • We provide examples of techniques related to your activity. There may be others that we do not describe here.

The impact force of 8 kN comes from the max. deceleration sustainable by the human body of 15 G,  

or 8 kN for a 55 kg mass.