Working lowering ropes are used for the heavy loads and are irreplaceable when rigging log sections. Due to the high loads that have to be handled, a lowering rope is usually thicker than a climbing rope and must be durable and abrasion-resistant. The rope construction is supple, making the ropes easy to knot but at the same time strong and robust. Often release ropes have spliced eyes and end connections at the ends of the rope. These ropes are not approved for use by people, but are only suitable for loads. Some drain ropes even have approval according to the EU Machinery Directive 2006/42/EC for use in connection with winches.