Climbing ropes is essential pieces of equipment because climbing ropes absorbs energy during a fall. When a person falls, the climbing rope stretch to absorb the impact, and this stretching prevents the impact from causing injury to the persons or damage to the climbing gear. Not all climbing ropes are the same because different climbing ropes is designed for different climbing environments.
Some climbing ropes are thin and lightweight for alpine climbing, but thin climbing ropes may wear down quick if the climbing ropes encounter sharp rocks. Other climbing ropes are thick and heavy for gym climbing, but thick climbing ropes are more durables and can withstand more abrasion. You must choose a climbing rope based on strength rating and diameter, and you can use comparison charts to see how different climbing ropes perform.
How to choose and care for climbing ropes
Strength in a climbing rope is measured by the number of falls a climbing rope can hold and the amount of impact force a climbing rope transmits to the climber. International standards, such as those set by the UIAA, require that a climbing rope must be able to withstand a specific number of falls before the climbing rope fail. For example, dropping an 80kg mass in a controlled fall tests a climbing rope to see how the climbing rope react.
A climbing rope must hold at least five such falls, and the peak force must remain below 12kN because a peak force above 12kN can cause injury to a person’s body or to the climbing anchor. Thinner climbing ropes often have lower impact force, which is better for a person’s body, but thinner climbing ropes may not be able to handle as many falls as thicker climbing ropes. A 10mm climbing rope may handle twelve falls, but a 10mm climbing rope will hit harder than an 8.7mm climbing rope because the 10mm climbing rope transmit more force.
There are three main types of climbing rope systems, which are single ropes, half ropes, and twin ropes. Single ropes are used by clipping the single rope into every piece of protection, and single ropes are typically between 8.5mm and 11mm in diameter. Half ropes are thinner than single ropes, and half ropes are often used to reduce rope drag because a person can alternate clips between two half ropes.
Twin ropes are the lightest type of climbing rope, and you must clip twin ropes together through every piece of protection. You should choose a single rope for sport climbing because single ropes are simple to use, but you should choose a half rope system for traditional climbing because half ropes reduces rope drag. The diameter of a climbing rope determines the weight of the climbing rope and the lifespan of the climbing rope.
Climbing ropes with a diameter under 9mm are very light, but climbing ropes under 9mm require careful handling because climbing ropes under 9mm are easily damaged by abrasion. Climbing ropes with a diameter between 9mm and 9.5mm are common for everyday sport climbing and traditional climbing because climbing ropes in this size range are durable and easy to handle. Climbing ropes with a diameter between 9.5mm and 10mm are good for gym climbing because thicker climbing ropes can withstand many falls.
Climbing ropes with a diameter over 10mm are used for big wall climbing because thick climbing ropes are very durable and can handle heavy load. Water affects how a climbing rope functions because water make a climbing rope stiff and heavy. Dry-treated climbing ropes use a coating so that the climbing ropes repel water, and dry-treated climbing ropes absorb less than 5% of their weight in water.
If a climbing rope absorbs water, the climbing rope become heavy and the climbing rope loses strength. You should use dry-treated climbing ropes for alpine climbing because alpine climbing often involves water or ice, but you dont need to use dry-treated climbing ropes for gym climbing because gym climbing is usually done in dry environment. A climbing rope consists of four main parts, which are the sheath, the kern, the middle mark, and the end whippings.
The sheath is the outer part of the climbing rope that protects the core from dirt and sharp edges. The kern is the inner part of the climbing rope that handle most of the load, and the kern provides the elastic stretch. The middle mark is a piece of colored thread that helps a person identify the center of the climbing rope, and the end whippings are used to seal the end of the climbing rope.
You must maintain your climbing rope to ensure the climbing rope remains safe to use. You should coil the climbing rope in a butterfly style to prevent the climbing rope from twisting, and you should wash the climbing rope gently with water. You should store the climbing rope away from ultraviolet light because ultraviolet light can damage the climbing rope.
You must retire a climbing rope after a factor-2 fall because a factor-2 fall creates maximum force that can damage the internal structure of the climbing rope. You should also retire a climbing rope if you see fuzz on the sheat, lumps in the core, or if the climbing rope feel stiff. Finally, you should retire a climbing rope if the climbing rope is ten years old, because climbing ropes lose their strength over time.
