Climbing ropes typically consist of a core (kern) of long twisted fibres and an outer sheath (mantle) of woven coloured fibres (hence the term kernmantle construction). The core provides about 80% of the tensile strength, while the sheath is a durable layer that protects the core and gives the rope desirable handling characteristics. The ropes used for climbing can be divided into two classes: dynamic ropes and static ropes.
Dynamic ropes have a certain amount of elasticity and are usually used as belay ropes. When a climber falls, the rope stretches, reducing the maximum force experienced by both the climber and his equipment. Static ropes are much less elastic, and are usually used in anchoring systems. They are also used for abseiling (rappeling) as they reduce bounciness and make it easier for a person to descend.
Dynamic ropes have a certain amount of elasticity and are usually used as belay ropes. When a climber falls, the rope stretches, reducing the maximum force experienced by both the climber and his equipment. Static ropes are much less elastic, and are usually used in anchoring systems. They are also used for abseiling (rappeling) as they reduce bounciness and make it easier for a person to descend.
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