Static rope for sport and professional climbers
Unlike dynamic ropes, static ropes have a substantially lower working elongation. This means that they expand due to stress, but only a little. Therefore, static ropes must never be used for securing sports climbers. Even with a fall factor <1 it might cause severe injury. <<
The low elongation of maximum 5% is a really decisive advantage for fixed ropes. The use of pulleys and ascenders is much more convenient and efficient. With a diameter of about 9 mm to 12 mm, most static ropes are either 10.5mm or 11mm thick. Due to their use as fixed ropes, static ropes from manufacturers like Edelrid are often used in longer versions as climbing ropes. Pulleys with 100m, 200m length or longer are not uncommon.
Recommended uses for static ropes
A static rope has a variety of applications. They can be used to safely work at height, for industrial climbing or cutting trees. These are also used for canyoneering, caving and as fixed ropes in high altitude mountaineering. The police, fire and mountain rescue use fixed ropes for their exercises and rescues.
Construction and handling of static ropes
Like climbing ropes, static ropes are usually made of polyamide fibers and are arranged in a sheath core structure. The coat is often very stable and durable. Static ropes for tree surgeons in particular are made with very thick rope sheaths. Static ropes may therefore also be heavier than conventional climbing ropes.
The cable thickness and the low elongation also lead to a different feel. The rope feels more secure than a dynamic climbing rope for alpinists and mountain rescuers. Consequently, it can also be knotted differently. However, for use as a fixed rope, it is unbeatable.