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A rock bolt is a long anchor bolt, for stabilizing rock excavations, which may be used in tunnels or rock cuts. It transfers load from the unstable exterior to the confined (and much stronger) interior of the rock mass.
In rock climbing, a bolt is a permanent anchor fixed into a hole drilled in the rock as a form of climbing protection. Most bolts are either self-anchoring expansion bolts or fixed in place with liquid resin. Climbing routes that are bolted are known as sport climbs, and those that do not use (or allow) bolts, are known as traditional climbs.
In rock climbing, an anchor can be any device or method for attaching a climber, rope, or load to a climbing surface—typically rock, ice, steep dirt, or a building—either permanently or temporarily. The intention of an anchor is case-specific but is usually for fall protection, primarily fall arrest and fall restraint.
Bolts are steel 13 mm (0.5 in) expansion bolts are pre-drilled into the rock with a hand drill and tightened with a torque wrench. Some versions use a type of glue to anchor the bolt. [2] [31] Before insertion, a bolt hanger is attached into which carabiners and quickdraws can be clipped. Modern stainless steel bolts last for over a decade but ...
A type of anchor used in soft rock instead of bolts that uses a "baby angle" (piton) hammered into a drilled hole, which some think is better in soft rock than bolts that can crack the rock. [41] [42] drive-by A deadpoint where one arm crosses over the other to reach a hold that is above and to the side. drop knee. Also egyptian. Also knee drop ...
The history of the anchor dates back millennia. The most ancient anchors were probably rocks and many rock anchors have been discovered originating from at least the Bronze Age. [1] Many modern moorings remain reliant upon a large rock as the primary element of their design.
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1960s-era pitons, including: knifeblades, lost arrows, bugaboos, ring angles, and bongs. A piton (/ ˈ p iː t ɒ n /; also called pin or peg) in big wall climbing and in aid climbing is a metal spike (usually steel) that is driven into a crack or seam in the climbing surface using a climbing hammer, and which acts as an anchor for protecting the climber from falling or to assist progress in ...
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