Impact force

This is the force generated and sustained by the climber at the moment a fall is arrested.
It is transmitted along the length of the rope through the runners and on to the belayer.
It is the capacity of the rope to absorb the energy of the fall which allows the impact force to
be cushioned and thus to diminish its effects.
The choice of rope is thus fundamental.
As a result the quality of a rope in this respect is judged by its capacity to generate a low
impact force and to retain this quality fall after fall.
The maximum impact force:
Is the impact force measured in the hardest conditions, specified in the Standard, of factor
1.77 on the first fall.
It’s this value which is given in the technical characteristics of the rope.