Pix of your crane tie in method

Tony

Tony

Carpal tunnel level member
Location
Lancaster, PA
I'm working on an upcoming webinar on climber tie in on cranes. A pic of a in tree tie in while craning would be great as well as long as you can tell what is going on.

If you could e mail me your highest resolution pictures I would appreciate it. I can only offer you photo credit and my gratitude. Perhaps a beer if we meet face to face in the future.

Please send pix to: keystonetrainingsolutions1@verizon.net

Thanx again in advance,

Tony
 
Just to be clear any crane related tie in above the ball, around the ball, through the ball. What ever crane tie in method you have come up with or crane work while tied in to a tree, another crane, building.

Thanks again,

Tony
 
Bump. I still need pics. Thanks to those who have sent me a few.

I am just trying to get a sampling of what is being used out there so I don't have to schlep on down to a crane shop and ask to use a crane for a photo shoot!

Thanks,

Tony
 
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This is what we use

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Have you thought about some type of pulley to prevent the wear in the shackle. That would fail an inspection at the point it is now.

Not being argumentative. Just putting my thoughts out.
 
I have tried a pulley to see if I like the feel of it and found I didn't like the hitch feel with no friction at all.
I hope I wouldn't fail an inspection for that wear mark, but who knows, I plan on replacing it when it nears half way, even at that point it still would far exceed the strength of the rest of the climbing system. I have been thinking about having the shackle fail tested on a test bed (after I replace it) to see how much strength was lost by the small groove. I am sure even if it was allowed to wear to 50% it would still be stronger then a friction saver
 
I understand the pulley...I had the same issues

As far as the shackle 10% wear is what the standards say and many manufacturers reccommend 5%
 
Wow, I would have never guessed you could wear a groove in steel like that with a climbing line in the normal course of tree/crane work.
 
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Wow, I would have never guessed you could wear a groove in steel like that with a climbing line in the normal course of tree/crane work.

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Yeah, I agree, how does that happen?
 
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I understand the pulley...I had the same issues

As far as the shackle 10% wear is what the standards say and many manufacturers reccommend 5%

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Mark,
I understand where your coming from, 10% wear on a shackle for use in its recommended safe working load, we are talking about shackle with a safe working load of 17,000 lbs, the standard for life support is 5,000 lbs. The small groove actually makes it work better in this application, it looks deeper in the picture then it actually is.
If I did happen to get fined for that I would have the shackle fail tested, I am confident that it would well exceed an absolute breaking strength of 25,000 lbs (safe working load of 5000 lbs )even with the wear, not sure if it would help with the fine or not but I would still give it a try

The groove in this shackle was worn over the past 4 years of daily tree removal off a crane, its kind of amazing what friction will do
 
Dave, I remember seeing your tie in system last summer and thought that the wear on the shackle was perfect.

The concave wear allows the rope to seat fine in the shackle. As far as wear goes, even if it was worn 75% of the way through, we’re talking about a 17,000 lb shackle! That would still give you 4,250 lbs of strength that would be more than enough to climb on, though obviously no one would do that.

Guys, don’t go sighting the ANSI 5400 lb allowable strength for climbing lines or 5000 lb for hardware either, because the minute that you’ve put a splice or knot in a rope, you’ve reduced the strength by 10%-60%.

What’s important is to use common sense and know your gear. This is where an OSHA inspector or a company safety officer could site you though, if they were to just “go by the book”.
 
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Dave,
The concave wear allows the rope to seat fine in the shackle. As far as wear goes, even if it was worn 75% of the way through, we’re talking about a 17,000 lb shackle! That would still give you 4,250 lbs of strength that would be more than enough to climb on, though obviously no one would do that.



[/ QUOTE ]The rope should fit nice in it since thats what wore it in. I dont think it makes the rope work any better with the grove.
75% wear does not mean 75% strength loss. My point was not that it would break at the point it is at. It was that it would fail an inspection.
If you were to use the above #s a 17k shackle new would break at 85k# if that were reduced 75% it would break at 22k#. still above 5K...If your talking tons just insrt ton for #
For the cost of the shackle I would replace it. 5000 hours/4 years. I would say you got your money worth.

Im not trying to be arguementative. Just pointing out the regs. and my opinion.
 
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