Results 101 to 120 of 146
Thread: I Fell 106 Feet. And Lived.
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12-16-2008, 08:51 PM #101Originally Posted by trackrunner
Depends of course. Usually I do the Stone Knot, then as the last person pull it out and either block it then, or rap double. Depends depends depends...
Tom
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12-16-2008 08:51 PM # ADS
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12-16-2008, 08:57 PM #102
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12-16-2008, 09:04 PM #103
Put them behind a picture, and then tell the landlord when you leave that the picture looks so nice on that wall he can keep it. I use the banister on the stairs or open a door and use the door knobs they seem to work ok. i tried to place a couple of bolts above the headboard in my bedroom but my wife did not approve. She did not see the humor in this idea.
Mark
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12-16-2008, 09:05 PM #104Originally Posted by ratagonia
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12-16-2008, 10:22 PM #105Originally Posted by ratagonia
The pictures are very helpful - thanks!
Don and Mark: my husband mounted anchors, similar to Tom's pictures, on a piece of 2" x 10" board about 20" long. The board is heavier and does not move freely. Also, it's easy to use sitting on the floor and it's easy to store.
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12-16-2008, 10:58 PM #106
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12-17-2008, 05:58 PM #107Originally Posted by ratagoniaLife is Good
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12-18-2008, 09:12 AM #108Originally Posted by Don
I'd practice during commercials when watching tv. In the car while waiting to pick the kids up form something or other. While sitting in the lobby waiting for an appointment, yada, yada.....
It worked for me....
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12-19-2008, 01:27 PM #109
Is this what you did?
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12-19-2008, 01:53 PM #110
No, it was like Tom's picture except Tom's picture of the double biner block as two ropes tied together. We had one 200' rope that we double blocked. The anchor (bolts, webbing and rapide) was as shown or very close to what was shown in Tom's picture.
Life is Good
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12-19-2008, 02:39 PM #111
gotcha, disregard my previous posts then.
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12-20-2008, 12:29 PM #112Originally Posted by Iceaxe
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12-20-2008, 01:39 PM #113Originally Posted by nonot
What are the forces in the cross-piece? Are there parts of the system vulnerable to that kind of force.
PART of the American Death Triangle is the cross-piece adding loads to the anchors. Another significant part is the (large) included angle of the triangle vectoring in larger loads to the anchors.
But in any case, applying understanding to the loads involved (I hope) is of higher interest than applying rote rules. I recommend it.
If the bolts are new, modern and well-placed, they are capable of holding 5000 lbs each in shear. The rope, webbing, chains and rings are capable of holding quite a bit too. If the chain comes down at a 45 degree angle, and you have 2 - 200 lbers on rappel, the load on the chain is 1.414* 200 lbs or around 280 lbs. Perhaps a doubling or trippling for the dynamic nature of the load... plus a 1/2 factor for the knot or the rope crossing a ring - still well within the capability of components.
If the bolts are old and crappy, then you should do everything you can to minimize loading. Simulrapping on old crappy bolts, even with 100 lb boy scouts is not recommended. Properly rigging old crappy bolts to minimize vectoring additions is highly recommend. Removing old carrpy bolts and replacing with a decent natural anchor is highly recommended, or, in certain areas, replacing with a new, shiny, well-placed bolt anchor may be appropriate.
To honor greater understanding...
Tom
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12-21-2008, 06:46 AM #114
..
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12-21-2008, 08:05 AM #115
To keep this in perspective....................
My comment was ZNP backcountry rangers only use a double fisherman.
I think it is a good bend and should be used where appropriate.
IMO the last rap in Pine Cr. with 2 ropes IS appropriate.(ymmv)
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12-22-2008, 10:01 AM #116Originally Posted by TuckerLife is Good
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12-22-2008, 10:54 AM #117Originally Posted by Scott Card
There was a death in Zion a couple years ago attributed to this creep. Climber on Angels Landing, rapping at night, a long rappel that the rope just barely reached - the rope crept, and one side no longer reached the ledge, rappeller went off the end.
Be careful out there (mostly a driving admonition, at the moment)...
Tom
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12-22-2008, 11:04 AM #118Originally Posted by ratagonia
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12-22-2008, 02:06 PM #119
..
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12-22-2008, 02:32 PM #120Originally Posted by Iceaxe
- well-liked, experienced and highly respected climber from Salt Lake
- solo'd Prodigal Son. Accident occured near the top, maybe even on the top pitch.
- happened at night.
- theorized that rope creep was the problem.
- was rapping two different cords, and the pitch was not too much shorter than the length of the rope.
My memory - ha!!!
T
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