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Tampilkan postingan dengan label lead climbing. Tampilkan semua postingan
Tampilkan postingan dengan label lead climbing. Tampilkan semua postingan

Kamis, 14 Februari 2008

Lead climbing


Lead climbing is a climbing technique used to ascend a route. This technique is predominantly used in rock climbing and involves a lead climber attaching themselves to a length of dynamic (stretchy) climbing rope and ascending a route whilst periodically attaching protection to the face of the route and "clipping in" to it. The lead climber must have another person acting as a belayer. The belayer has multiple roles: holding the rope in the event of a fall, and paying out or taking up rope as the climber moves.

As lead climbing does not require a pre-placed anchor at the top of the route, it is often seen as less restricted than top roping. Also, because a lead climber does not have an anchor point above them whilst climbing, only the limbs and body of the climber are used to effect upward progress. Protective devices are only placed to catch the climber in the event of a fall.

Lead climbing is an advanced technique, and is rarely practiced by novice climbers.

Lead climbing basics

When lead climbing, the lead climber or leader wears a harness tied to one end of a rope. The leader's partner provides the belay, paying out rope as needed, but ready to hold the rope tightly, usually with the aid of a belay device, to catch the leader in the event of a fall. The lead climber ascends the route, periodically placing protection for safety in the event of a fall. The protection can consist of pre-placed bolts and pitons, to which the climber clips quickdraws, or removable protection such as nuts and spring loaded camming devices which are carefully secured by the climber into cracks or other features. Distances between pieces of protection can range from three to forty feet or more, although most often the distance is between six and twelve feet.

At any point, the leader can fall at least twice as far as the distance to the most recently placed protection. If a leader is ten feet above the last piece of protection, a fall will be a minimum of twenty feet. Realistically, the fall would likely include several more feet due to rope elasticity and slack and give in the overall mechanical system. Any time a lead climber approaches twice the height of the last piece of protection, there is danger of a ground fall in which the falling climber hits the ground before the rope goes tight. In such a case, the rope does no good at all. The severity of a fall which is arrested by the climbing rope is measured by the fall factor: the ratio of the distance fallen to the amount of rope between the climber and the belayer. A fall of 20 feet is much more severe (exerts more force on the climber and climbing equipment) if it occurs with 10 feet of rope out (i.e. the climber has placed no protection and falls from 10 feet above the belayer to 10 feet below--a factor 2 fall) than if it occurs 100 feet above the belayer (a fall factor of 0.2), in which case the stretch of the rope more effectively cushions the fall.

Once the leader reaches a suitable spot for anchoring, or runs out of protection (hopefully the former), two things can occur:

1. The climber is lowered to the ground by the belayer or rappels to the ground, removing the pieces of protection on the way down. This is common when sport climbing or climbing short routes.
2. The leader belays the lower climber (the former belayer) up to the anchors. On the way up, the climber cleans (removes) the protection placed by the leader. This is common when climbing multi-pitch routes, where this process is repeated once for each pitch.

Sport climbing generally uses pre-placed protection, while removable protection is more commonly used when traditional climbing. However, it is not uncommon to see routes with both types of protection present when lead climbing.

Lead climbing is done for several reasons. Often, placing a top-rope is not an option because the anchors are not accessible by any means other than climbing. Sport climbing and traditional climbing both utilize lead climbing techniques for practical reasons, as well as stylistic reasons. Climbers may work individual pitches on top-rope, but valid ascents require the climber to lead the pitch.

Types of rock climbing


Rock climbing may be divided into two broad categories: free climbing and aid climbing.

* Free climbing requires the climber use only his/her bodily strength for upward progress. Commonly confused with "free-soloing" which means to climb without a rope. The essence of free climbing is that, although gear may be used to protect a climber in the event of a fall, the actual "climbing" is being done without the help of any artificial device.

* Aid climbing involves using artificial devices placed in the rock to support all or part of the climber's body weight, and is normally practiced on rock formations that lack the necessary natural features suitable for free climbing.

Other kinds of climbing:

* Lead climbing is a method of climbing in which the climber (here called the "leader") climbs a route from the ground up. To protect him/herself, the climber trails a rope which is managed by a belayer who remains on the ground or at an established anchor. As the leader climbs, he/she can either clip the trailed rope through pieces of traditional gear (cams, stoppers), placed in cracks, or clip the rope through gear already in place (bolts, pitons). If a climber falls while leading, he/she cannot comfortably sit back on the rope and be held by the belayer as in toproping (where the rope is anchored above the climber); rather, the leader will fall twice the distance between his/her position and the most recent piece of protection (a cam, stopper, bolt, etc.) that he/she clipped the rope through (assuming this piece of protection holds).
* Traditional Climbing, or "Trad" Climbing. In Trad Climbing, the leader uses mostly removable gear (and the occasional bolt placed on lead) to protect against falls. As in all forms of lead climbing, the climbing team (a leader and follower, or multiple followers) begins at the bottom of a climb and ascends to the top, the leader placing protective devices in the rock as he/she climbs. Once the leader is finished climbing, he/she establishes a belay. The follower then "follows" the route and removes all of the gear placed by the leader. It is important that the leader be proficient at placing Trad (or clean) gear (cams, stoppers, hexes, tri-cams, etc.) because his/her safety depends upon the soundness of each individual gear placement. Placing trad gear on lead can be time-consuming and thus tiring, sometimes making routes feel harder than their rating. Trad climbing is generally practiced according to ethical principles, that dictate only natural gear placements be made. These same ethical principles have driven many to put their lives in danger rather than place a bolt. If the climbers are exceptionally traditional, the leader will immediately lower to the ground or anchor after a fall (rather than continuing on from where he/she is hanging). It is, with perhaps the exception of Free-soloing, the purest form of climbing. A true traditional ascent will leave no trace of its passage.
* Sport Climbing is a type of lead climbing which involves the use of pre-placed permanent bolts for protection. This frees the leader from the need to carry and place traditional gear. The leader merely clips one side of a quickdraw (two carabiners connected by a loop of webbing) into a bolt and the other into the rope. A typical sport route will require the leader to carry between 6 and 12 quickdraws or "draws," one for each bolt in the string of bolts that protect the route. Sport Climbing, in essence, is focused more on the gymnastic aspects of climbing than the aesthetics or adventure. Sport routes are bolted with safety in mind and also because they generally (though not always) ascend faces that are not protectable by any other practical mean. Bolts, however, are not foolproof. The same stringence concerning safety found in Trad. climbing should apply to Sport climbing as well. In the case of a fall, sport climbers often rest on the rope and begin from where they are hanging, called "hang-dogging." Hard sport climbs often require that the climber literally rehearse every single move several times before he/she can complete a clean ascent (without falls).
* Top Roping involves suspending a rope from an anchor located at the top of a short climb. The climber ties into one end of the rope and is belayed by his belayer who manages the other end of the rope. The belayer can belay either from the top or base of the route. This is distinct from Lead climbing where the climber is not safeguarded by a rope attached to an anchor situated at the top of the route.
* Bouldering may be described as climbing short, severe routes on boulders or small outcrops. While safety ropes from above are occasionally used, most boulderers feel that the most ethical form of protection is a bouldering mat or pad similar to those used by gymnasts. In addition, other climbers standing on the ground may "spot" the boulderer, to help safely guide his or her fall.
* Indoor climbing is a form of climbing that can involve bouldering, top roping, and leading in an indoor environment on wood or plastic holds. For most it will be the easiest way to begin the sport.
* Free solo climbing: Usually describes free climbing without a rope or other protective gear. Free solo climbing is distinguished from solo climbing where a climber progressing alone uses a rope and protection devices including a self belay system.

Senin, 03 Desember 2007

lead climbing


lead climbing

Below is a summary of the citieria that we use to assess an individual's ability to climb and belay safely. All participants must be able to do these things to earn and retain the privilege of climbing in our gyms in order to ensure the safety of everyone. Please do not be disappointed if we require you to test multiple times; we are merely attempting to create as safe an environment as we can. We thank you in advance for taking the time and energy to learn safe climbing and belaying technique.

Minimum Requirements for Safe Top-Roped Climbing
Touchstone Climbing will issue a belay card and allow climbers to retain the belaying privileges only if the individual demonstrates the following safety items at all times:

  • All participants must sign a waiver releasing Touchstone Climbing from liability and acknowledging their own personal responsibility for safe climbing.
  • All participants must use UIAA-approved belay devices and harnesses.
  • Belayers must remain attentive and stand while belaying.
  • Harnesses must be snug with belt above hips and tied-in securely with buckle doubled back.
  • Figure 8 follow-through knot must be tied through waist belt and leg loops.
  • Minimum of 6 inch tail on figure 8 follow through knot, with additional safety knot optional.
  • Belay device must be set properly and belay carabiner must be locked.
  • Belaying without dropping/letting go of the brake hand.
  • Switching between belaying and lowering without compromising the brake hand.
  • When lowering, brake hand must not go above 3 o'clock position.

Minimum Requirements for Safe Lead Climbing
All lead climbers and lead belayers must be lead checked by gym staff. The lead test must be on a 5.10b route (or harder) that is unfamiliar to the climber. The reason for this requirement is that only a 5.10b or harder has no rests. We want to ensure that a climber will make the correct safety choices even when fatigued.

  • Belaying
    • Lead belayers must sign into the Lead Check-In Log at the front counter each day.
    • All regular belay rules above must be followed (e.g. harness doubled back, belay hand always on rope, etc.).
    • Belayers must remain attentive to lead climbers at all times and stand while belaying.
    • Belayers must keep minimal slack - rope must not touch ground.
    • Belayer must take the leader fall without losing control and with minimal rope play.
    • Belayer must belay immediately underneath the first clip until climber has clipped at least the 4th quickdraw.
  • Climbing
    • Lead climbers must sign into the Lead Check-In Log at the front counter each day.
    • Leader climbers must bring their own lead ropes, as lead ropes are not provided by the gym.
    • Leader must clip all quickdraws, in order.
    • Leader must clip carabiners in correct direction, without trouble.
    • Lead climbers must clip at a level between their head and waist.
    • Leader must not Z-clip quickdraws.
    • Leader must appear safe.
    • Leader must be willing to take a reasonable fall.