Absolute return - Revision history

Salix alba: Undid revision 635303123 by 24.131.80.54 this looks the wrong way round the broker will charge the manager interest

2014-11-24T23:38:50Z

Undid revision 635303123 by 24.131.80.54 this looks the wrong way round the broker will charge the manager interest

← Older revision		Revision as of 01:38, 25 November 2014
Line 1:		Line 1:
	~~In [[rock climbing]], an '''anchor''' can be any way of attaching the climber, the rope, or a load to rock, ice, steep dirt, or a building by either permanent or temporary means~~. ~~The goal of an anchor depends on~~ the ~~type of climbing under consideration but usually consists of stopping a fall, or holding a static load.<ref name="freedom">{{cite book \| edition = 7 \| editor = Cox, Steven M. and Kris Fulsaas, ed~~. \| title ~~= [[Mountaineering: The Freedom of the Hills]] \| publisher = The Mountaineers \| isbn = 0-89886-828-9\| location = Seattle \| year = 2003-09}}</ref>~~		Hello. Let me introduce the writer. Her title is Refugia Shryock. North Dakota is exactly where me and my spouse live. To do aerobics is a thing that I'm completely addicted to. Bookkeeping is my profession.<br><br>Look at my site ... over the counter std test ([http://reinodoprazer.com.br/index.php?do=/blog/326/tips-about-how-to-overcome-candidiasis-easily/ see here])

	~~==Types of anchors==~~
	~~[[File:Sanduhr 7062 a.jpg\|thumb\|right\|Natural protection - a slung handle.]]~~
	[[File:Climing anchor.JPG\|thumb\|right\|An artificial climbing anchor composed of a [[Hexcentric\|hex]] and two [[Spring-loaded camming device\|cams]], equalized with [[Sling (climbing equipment)\|slings]].]]
	~~[[File:pickett02.jpg\|thumb\|right\|snow picket]]~~
	Depending on the material being climbed, there are many types of [[protection (climbing)\|protection]] that can be used to construct the anchor, including natural protection such as boulders and trees, or artificial protection such as [[spring-loaded camming device\|cams]], [[nut (climbing)\|nuts]], [[bolt (climbing)\|bolts]] or [[piton]]s.

	~~===Natural anchor===~~
	~~A natural anchor is one that does not require man-made climbing gear. Such anchors may consist of trees, chockstones already lodged in a crack, horns and protrusions, etc.~~

	~~===Artificial anchor===~~
	An artificial anchor consists of man-made climbing gear placed in the rock. Such gear includes [[spring-loaded camming device]]s, [[Nut (climbing)\|aluminum chockstones]], steel expansion bolts, and [[piton]]s

	~~===Belay anchor===~~
	~~A [[belay]] anchor~~ is ~~used as a sole attachment to the cliff face, to support a belay or [[toprope]]~~. Ideally, it should consist of multiple redundant components (natural and/or artificial), none of which are likely to fail, and none of which in the event of failure would cause the entire anchor to fail. Any one component of a good anchor should be able to support the entire system by itself. If these conditions are met, the system will be essentially bombproof.

	~~===Running belay anchor===~~
	~~A [[running belay]] anchor~~ is ~~used as a safeguard in the event of a fall while [[lead climbing]]. The leader~~ and ~~follower climb simultaneously with protection placed in between~~. ~~When the two climbers advance using a running belay, the belay~~ is ~~almost as secure as using~~ a belay device and anchors because if the leader falls, all the slack is already out of the rope and the second is the counterweight to catch the fall. A running belay is used when the risk of using the slow process of pitch climbing is greater than the consequences and/or likelihood of a leader fall.

	~~===Ice anchors===~~
	The snow picket is used as an [[anchor]] in [[mountaineering]]. It is driven into the snow and used to arrest falls. [[Snow pickets]] can also be placed horizontally in snow as a [[deadman (climbing)\|deadman]], which provides a much more secure anchor to abseil on. [[Ice screw]]s can be hand-driven into solid ice and are the equivalent of cams or nuts when [[ice climbing]]. Ice can also be protected using an [[Abalakov thread]] or v-thread. Because of the uncertain holding power of ice protection, it is sometimes clipped into the rope using a load-absorbing sling or [[quickdraw]], designed to reduce the load on protection by extending in case of a fall.

	~~== Attachment to the anchor ==~~

	~~===Indirect===~~
	~~When the rope goes from the climber to the belayer. Most often used under controlled circumstances at climbing walls or when the climber doesn~~'~~t have the weight advantage on the belayer during bottom roped climbs. It is impossible~~ to ~~escape from the system~~.

	~~===Semi-direct===~~
	~~When the rope comes from the climber to the belayer, but the belayer~~ is ~~attached separately to an anchor~~. Often used when multi pitching and the belayer is on a stance. Or when top roping and it is possible that if the climber falls the belayer will be pulled from the stance above the climber. The belayer can, with a little effort then remove themselves from the system if required.
	~~It is essential that the belayer is attached to the anchor via the belay loop~~ at ~~the front of the harness~~. ~~Attaching the belayers harness to the anchor via the back of the harness can cause the harness, when placed under strain, to constrict inwards elongating front to back, rather than side to side~~. ~~This can result in crushed pelvis and serious harm to the belayer~~.

	~~===Direct===~~
	~~When~~ the ~~rope comes from the climber to an anchor. A hanging belay device may be used, although it is common in this instance to just use an [[Italian hitch]]. The belayer is totally free of the system.~~

	~~==Equalization==~~
	[~~[File~~:~~Equalized anchor~~.~~JPG\|thumb\|right\|Two-point equalized anchor, using two trees as protection points~~. ~~The V-angle is shown as the angle formed between the [[Sling (climbing equipment)\|slings]]~~.]]

	Anchor equalization is the process of combining two or more anchors in the build of a single equalized anchor. This is the method used in a redundant belay anchor, as mentioned above. If assembled correctly, the load can be distributed amongst the individual anchors, rather than placing all the load on a single anchor point. This decreases the chance that any of the anchor points will fail, and, if a point does fail, the other(s) should still be able to hold.

	When forming an equalized anchor, it is important to take into consideration the angle formed between the two pieces of protection—the "V-angle". One must try to minimize this angle as much as possible, because the greater the V-angle, the more force will be placed on each piece of protection.
	As shown below, if the V-angle is greater than 120 degrees, the load on each anchor comprising the equalized anchor will actually be greater than the load on the rope connected to the equalized anchor. This is a hazardous situation which makes it worse to use equalization than not at all, and should be avoided.

	~~If the load force (''To load'' in the image at right) is <math>F_{Load}<~~/~~math> and the V-angle is <math>\theta_V<~~/~~math>, then the force on ''each'' anchor is given by:~~

	~~:<math>F_{Anchor} = \frac{ F_{Load} }{ 2 \cos( \theta_V / 2 ) }<~~/~~math>.~~

	~~Assuming the two anchors are "symmetric" in nature.~~

	~~Resulting from this expression, we can deduce:~~
	*At a V-~~angle of 30 degrees, each of the two anchors bear a force of~~ about ~~52% of the original load.~~
	*At 45 degrees, each anchor bears about 54% of the load.
	*At 60 degrees, each anchor bears about 58% of the load.
	*At 90 degrees, each anchor bears about 71% of the load.
	*At 120 degrees, each anchor bears a force equivalent to 100% of the original load. An angle this large should never be used.

	~~For the math on~~ how ~~this equation was derived please see [[Equalization (proof)\|Equalization Proof]].~~

	~~== References ==~~
	~~{{Reflist}}~~
	* Long, John (1993). ''How to ~~Rock Climb: Climbing Anchors''. Chockstone Press, Evergreen, Colorado. ISBN 0~~-~~934641~~-37-4
	* Graydon, Don, and Kurt Hansen, eds. (1997)~~. ''Mountaineering: The Freedom of the Hills'', 6th edn., pp. 143–152. The Mountaineers, Seattle. ISBN 0-89886-427-5~~

	~~{{Climbing-nav}}~~

	~~{{DEFAULTSORT:Anchor (Climbing)}}~~
	~~[[Category:Climbing equipment]]~~
	~~[[Category:Mountaineering equipment]]~~

en>Compfreak7: Filling in 3 references using Reflinks

2013-10-23T13:58:01Z

Filling in 3 references using Reflinks

← Older revision		Revision as of 15:58, 23 October 2013
Line 1:		Line 1:
	~~Nice~~ to ~~meet you~~, my name is ~~Figures Held though I don~~'t ~~truly like becoming known~~ as ~~like~~ that. ~~Hiring~~ is ~~my profession~~. ~~Minnesota has always been his house but his wife wants them~~ to ~~move~~. ~~Body developing~~ is ~~what my family~~ and ~~I appreciate~~.<br><br>~~My web site at home std testing~~ (~~[http:~~//~~Www~~.~~Videoworld~~.~~com/user/SMaloney~~ please ~~click~~ the ~~next document~~])		In [[rock climbing]], an '''anchor''' can be any way of attaching the climber, the rope, or a load to rock, ice, steep dirt, or a building by either permanent or temporary means. The goal of an anchor depends on the type of climbing under consideration but usually consists of stopping a fall, or holding a static load.<ref name="freedom">{{cite book \| edition = 7 \| editor = Cox, Steven M. and Kris Fulsaas, ed. \| title = [[Mountaineering: The Freedom of the Hills]] \| publisher = The Mountaineers \| isbn = 0-89886-828-9\| location = Seattle \| year = 2003-09}}</ref>

			==Types of anchors==
			[[File:Sanduhr 7062 a.jpg\|thumb\|right\|Natural protection - a slung handle.]]
			[[File:Climing anchor.JPG\|thumb\|right\|An artificial climbing anchor composed of a [[Hexcentric\|hex]] and two [[Spring-loaded camming device\|cams]], equalized with [[Sling (climbing equipment)\|slings]].]]
			[[File:pickett02.jpg\|thumb\|right\|snow picket]]
			Depending on the material being climbed, there are many types of [[protection (climbing)\|protection]] that can be used to construct the anchor, including natural protection such as boulders and trees, or artificial protection such as [[spring-loaded camming device\|cams]], [[nut (climbing)\|nuts]], [[bolt (climbing)\|bolts]] or [[piton]]s.

			===Natural anchor===
			A natural anchor is one that does not require man-made climbing gear. Such anchors may consist of trees, chockstones already lodged in a crack, horns and protrusions, etc.

			===Artificial anchor===
			An artificial anchor consists of man-made climbing gear placed in the rock. Such gear includes [[spring-loaded camming device]]s, [[Nut (climbing)\|aluminum chockstones]], steel expansion bolts, and [[piton]]s

			===Belay anchor===
			A [[belay]] anchor is used as a sole attachment to the cliff face, to support a belay or [[toprope]]. Ideally, it should consist of multiple redundant components (natural and/or artificial), none of which are likely to fail, and none of which in the event of failure would cause the entire anchor to fail. Any one component of a good anchor should be able to support the entire system by itself. If these conditions are met, the system will be essentially bombproof.

			===Running belay anchor===
			A [[running belay]] anchor is used as a safeguard in the event of a fall while [[lead climbing]]. The leader and follower climb simultaneously with protection placed in between. When the two climbers advance using a running belay, the belay is almost as secure as using a belay device and anchors because if the leader falls, all the slack is already out of the rope and the second is the counterweight to catch the fall. A running belay is used when the risk of using the slow process of pitch climbing is greater than the consequences and/or likelihood of a leader fall.

			===Ice anchors===
			The snow picket is used as an [[anchor]] in [[mountaineering]]. It is driven into the snow and used to arrest falls. [[Snow pickets]] can also be placed horizontally in snow as a [[deadman (climbing)\|deadman]], which provides a much more secure anchor to abseil on. [[Ice screw]]s can be hand-driven into solid ice and are the equivalent of cams or nuts when [[ice climbing]]. Ice can also be protected using an [[Abalakov thread]] or v-thread. Because of the uncertain holding power of ice protection, it is sometimes clipped into the rope using a load-absorbing sling or [[quickdraw]], designed to reduce the load on protection by extending in case of a fall.

			== Attachment to the anchor ==

			===Indirect===
			When the rope goes from the climber to the belayer. Most often used under controlled circumstances at climbing walls or when the climber doesn't have the weight advantage on the belayer during bottom roped climbs. It is impossible to escape from the system.

			===Semi-direct===
			When the rope comes from the climber to the belayer, but the belayer is attached separately to an anchor. Often used when multi pitching and the belayer is on a stance. Or when top roping and it is possible that if the climber falls the belayer will be pulled from the stance above the climber. The belayer can, with a little effort then remove themselves from the system if required.
			It is essential that the belayer is attached to the anchor via the belay loop at the front of the harness. Attaching the belayers harness to the anchor via the back of the harness can cause the harness, when placed under strain, to constrict inwards elongating front to back, rather than side to side. This can result in crushed pelvis and serious harm to the belayer.

			===Direct===
			When the rope comes from the climber to an anchor. A hanging belay device may be used, although it is common in this instance to just use an [[Italian hitch]]. The belayer is totally free of the system.

			==Equalization==
			[[File:Equalized anchor.JPG\|thumb\|right\|Two-point equalized anchor, using two trees as protection points. The V-angle is shown as the angle formed between the [[Sling (climbing equipment)\|slings]].]]

			Anchor equalization is the process of combining two or more anchors in the build of a single equalized anchor. This is the method used in a redundant belay anchor, as mentioned above. If assembled correctly, the load can be distributed amongst the individual anchors, rather than placing all the load on a single anchor point. This decreases the chance that any of the anchor points will fail, and, if a point does fail, the other(s) should still be able to hold.

			When forming an equalized anchor, it is important to take into consideration the angle formed between the two pieces of protection—the "V-angle". One must try to minimize this angle as much as possible, because the greater the V-angle, the more force will be placed on each piece of protection.
			As shown below, if the V-angle is greater than 120 degrees, the load on each anchor comprising the equalized anchor will actually be greater than the load on the rope connected to the equalized anchor. This is a hazardous situation which makes it worse to use equalization than not at all, and should be avoided.

			If the load force (''To load'' in the image at right) is <math>F_{Load}</math> and the V-angle is <math>\theta_V</math>, then the force on ''each'' anchor is given by:

			:<math>F_{Anchor} = \frac{ F_{Load} }{ 2 \cos( \theta_V / 2 ) }</math>.

			Assuming the two anchors are "symmetric" in nature.

			Resulting from this expression, we can deduce:
			*At a V-angle of 30 degrees, each of the two anchors bear a force of about 52% of the original load.
			*At 45 degrees, each anchor bears about 54% of the load.
			*At 60 degrees, each anchor bears about 58% of the load.
			*At 90 degrees, each anchor bears about 71% of the load.
			*At 120 degrees, each anchor bears a force equivalent to 100% of the original load. An angle this large should never be used.

			For the math on how this equation was derived please see [[Equalization (proof)\|Equalization Proof]].

			== References ==
			{{Reflist}}
			* Long, John (1993). ''How to Rock Climb: Climbing Anchors''. Chockstone Press, Evergreen, Colorado. ISBN 0-934641-37-4
			* Graydon, Don, and Kurt Hansen, eds. (1997). ''Mountaineering: The Freedom of the Hills'', 6th edn., pp. 143–152. The Mountaineers, Seattle. ISBN 0-89886-427-5

			{{Climbing-nav}}

			{{DEFAULTSORT:Anchor (Climbing)}}
			[[Category:Climbing equipment]]
			[[Category:Mountaineering equipment]]

86.130.96.236: /* Short selling */

2012-05-22T20:12:13Z

Short selling

New page

Nice to meet you, my name is Figures Held though I don't truly like becoming known as like that. Hiring is my profession. Minnesota has always been his house but his wife wants them to move. Body developing is what my family and I appreciate.<br><br>My web site at home std testing ([http://Www.Videoworld.com/user/SMaloney please click the next document])