Basically there are two different types of climbing ropes: static and dynamic. Depending on what kind of activity the rope is used they are made with different diameter, elongation, length, impact force… These rope qualities are put through various UIAA tests depending on the type of the rope and what exact qualities should be tested.
The most common climbing rope is 60m long dry rope with 9.8mm – 10.2mm diameter.
The dynamic ropes are made to stretch when weighted which minimizes and absorbs the impact of the fall. This type of ropes are used for climbing and can be also used for rappelling, top-roping and hauling gear.
Static ropes, unlike dynamic, does not stretch and are not designed for climbing. These ropes are usually used for building anchors, hauling loads and rappelling.
Depending of their sizes, both length and width, there are three types of ropes:
- Single Ropes
Single ropes are the most popular and most used ropes. They are suited for multipitch, trad climbing, sport climbing, ice climbing, top-roping. Single ropes are generally between 9.5mm and 11mm in diameter and can vary in length (50m, 60m, 70m).
- Double Ropes
Double ropes are two separate ropes with the same size (usually thinner than the single ropes). They are made to be clipped into the gear separate from each other. This reduces the friction in cases where the protection points are widely spread and reduces impact force. Because of the use of two ropes it is important to use belaying method that enables an independent control of both ropes.
This type of ropes are are designed to be clipped together into each piece of protection, just the same as the signle rope is clipped. Twin ropes are much thinner and are mostly used for alpine rock climbings or climbing on ice or mixed routes.