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Technical information

Number of falls

The minimum requirement is 5 falls.

Impact force

In a would receive in a fall.The maximum permitted is 1200 daN for single and twin ropes, and 800 daN for double ropes. These values are the reasonable maximum that the body can withstand without sustaining serious injury.dynamic test we measure the force which is not absorbed by the rope and the impact force the body of a climber.

Shock factor

The shock factor determines the severity of the fall. This factor is obtained by dividing the distance of the fall by the length of rope that took the fall.
Factor 1: 14 m / 7 m
The severity of the fall is directly related to its length, the rubbing to which is it subjected and the effects of protection; so that we can obtain different factors with different consequences for the same height.
Factor 2: 6 m / 3 m
2 (the highest factor possible) If there is protection between the first and second climber, the factor of the fall is greatly reduced.

Construction

Ropes must be made using the core-sheath system, with a central core that accounts for more than 50 % of the sheat.

Elongation with use

Good ropes must balance opposing characteristics. minimum elongation with use, and maximum elongation to reduce the impact force of a fall. These two opposing demands require an equilibrium which we achieve perfectly in the manufacture of ROCA ropes.

Tensile strengh test

This test confirms the tensile strength of a given type of rope by pulling its ends apart until it breaks. Units = 1 daN ~ 1 kg

Sheath slippage

When pulled axially, the sheath and core should not slide apart, but must stay joined.