1. Close the system
To “close” the system, knots must be tied in each free strand of rope so that a rappeler cannot rappel off either end of the rope. If either strand passes through the rappel device, the rappel is compromised (unless both strands are secured somewhere else: see “pre-rigged rappelling". Before tossing the ropes down the cliff to rappel, tie a double overhand, or a “stopper” knot, in each strand with at least 18 inches of tail.
2. Backup the rappel
Without a proper backup, if the rappeler loses control of the break strands, they compromise the rappel. These situations could include being hit by rockfall, getting stung by insects, passing out or having a medical emergency, forgetting there is no backup and letting go of the break strands, or a number of other unforeseen circumstances. For these reasons, best practice is to use a friction hitch backup, or “third hand,” to provide an added degree of safety for the rappeler. The friction hitch slides freely and grips the rope when not being tended by the rappeler, so it protects the climber in the event they let go of the break strands. Friction hitches are created using “prusiks,” which are typically made from accessory cord. We like 5mm cord cut to 3 feet 7 inches and tied with a double fisherman's knot!
3. Middle-mark the rope
Many modern ropes come with a “middle-mark,” usually one or two black stripes in the middle of the rope to signify its location. This mark is useful for rappelling because it ensures there is an equal amount of rope in each strand. The rappeler will not be able to get down unless both strands reach the ground or next anchor station, which may not happen if the strands are unequal. Best practice is to find the middle mark while setting up a rappel and ensure it is directly at the anchor before starting to rappel. Even with the middle mark in the proper location, it is still possible to come up short of the ground or next anchors if the rope is too short, which illustrates the importance of closing the system with stopper knots so that you can’t fall the remaining distance.
Many modern ropes come with a “middle-mark,” usually one or two black stripes in the middle of the rope to signify its location. This mark is useful for rappelling because it ensures there is an equal amount of rope in each strand. The rappeler will not be able to get down unless both strands reach the ground or next anchor station, which may not happen if the strands are unequal. Best practice is to find the middle mark while setting up a rappel and ensure it is directly at the anchor before starting to rappel. Even with the middle mark in the proper location, it is still possible to come up short of the ground or next anchors if the rope is too short, which illustrates the importance of closing the system with stopper knots so that you can’t fall the remaining distance.
Many middle marks on ropes we’ve had significantly faded with age and usage. We suggest purchasing a bi-pattern rope, like the Icon 9.1 from Bluewater. Bi-pattern ropes greatly facilitate finding the middle of the rope quickly and accurately. It is much easier to see rather than a simple black mark, especially while zipping rope through an anchor.
As mentioned, rappelling is one of the more dangerous aspects of climbing due to the need of fully relying on your system. Seek professional instruction to learn the ins and outs of descending from height, and refer back to this article for a refresher. See you out there!