Crane slings?

[treevet]

they are only as good as after your last pick so what good is once a year?

 

[arboristdenmark]

Agree. But if your slings should collapse and they aren't labelled / annually certified by an approved test institute here in Denmark, you will be in deep trouble - and the insurance will probably not cover.
Still, the gear should be inspected every day


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[rymancm]

Every crane operator I have worked with has provided slings. These operators are rigging experts who do it every day and usually have a wide selection of slings to suit different jobs. We have lifted everything from single branches to 20,000 lb. trees in one piece so there's no way I am going to try to stock all the different slings for all the different scenarios. We mostly use flat slings rated to 8,000 lbs SWL choked and we inspect them continually. I have used choker cables and they are too stiff and heavy to be practical for everyday use. Think about 10 trees, 4 picks per tree. That's a lot of wrestling for the climber. I would not even consider using chains. We try to avoid using multiple slings and balancers but sometimes it's necessary with hardwoods. Still, it's better to use a big ass crane and take bigger pieces that are bottom-heavy and less prone to flipping over. Of course that means you need a bigger drop zone. This is off the subject, but EVERYONE on our crew has a helmet radio on the same frequency as the crane operator so we are all in communication. This is critical for safety and efficiency. Again, with a big crane the climber is often far enough from the crane that he/she and the operator can't even see each other. How you going to do that without a radio?

 

[treevet]

been done for years and years and years...with a mid man or even 2. Obv. headsets are way better.

I ALWAYS use my own chokers, even with subs. If a 5,6 thousand piece is riding over my head I am gonna KNOW what is holding it. I am gonna know it has not been abused.

ps. EVERYBODY flips a piece now and then. If you say you haven't...you either are a liar, or you haven't done a lick of tree/crane work. You just always play worse case scenario like in everything else you do.

Sometimes if you choke too high your choke point may not be strong enough and if you cut too low you may be going out of chart. That is the reality of tree/crane work which is dif. than anyother crane work.

 

[rymancm]

ps. EVERYBODY flips a piece now and then. If you say you haven't...you either are a liar, or you haven't done a lick of tree/crane work. You just always play worse case scenario like in everything else you do.

Sometimes if you choke too high your choke point may not be strong enough and if you cut too low you may be going out of chart. That is the reality of tree/crane work which is dif. than anyother crane work.

Absolutely. I've done it more than once. Just that with a bigger crane you can cut lower without going off the chart, thereby reducing the risk of flipping pieces. But sure, it still happens sometimes.

 

[treevet]

Absolutely. I've done it more than once. Just that with a bigger crane you can cut lower without going off the chart, thereby reducing the risk of flipping pieces. But sure, it still happens sometimes.

True, But often with a bigger crane you have to set up farther away negating the advantage somewhat....with a non driveway crushing crane. Flipping a piece if it just flies away sideways is no biggy cause the butt is going away from you anyway, unless there are hotties under it ofcourse or some other target. But I hate picking pieces that are leaning away from the crane and you are standing it up first. Real dangerous imo for the climber. If that piece flips it could get messy.
Also if the butt falls of the stem while standing up it is in your lap and if you are lanyarded in you cannot escape.

 

[no tree to big]

This is what we use not sure if they are approved for overhead lifting but the company has never had one come loose

we don't generally take epic size pieces since our crane is not too big.

We do a lot of single choker pics very few with 2 these cables are easy on the climber

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[MasterBlaster]

If I was forced to use chains, those chains would mysteriously disappear toot sweet.