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

Warnings

  • Read the technical notice before viewing the following techniques.
  • It is important to fully understand the information provided in the technical notice before using this complementary information
  • Mastering these techniques requires training.
  • Consult a professional before attempting to perform these techniques on your own.

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.