Work Photos

Took me longer to type the question than for you to answer it. Thanks for the sling info.


I believe he mentioned 11,000lbs on the cable. The first piece came off a little heavier than he predicted, which likely led him to be conservative. We were also trying to keep the pieces a consistent size at the end while keeping the 10' stump. Ended up with about a 3' length to get the final height that weighed 3,000lbs. The previous two picks were 5000 and 5500
You’re welcome! 11k sounds reasonable, I’ve never worked with a 50 ton. We use a 40 and 45 regularly which both pull about 10k, and rarely a 70 if we need bigger, which pulls 13,500 I believe. We used a 55 a couple years ago, but don’t really like that company, and I don’t remember what it could pull.

Sizing the pieces like that makes good sense, and that big heavy piece in the middle would mix things up too for sure.
 
I have the same suspicion. I'll run those Ultrex slings by him. Any chance you have a pic or video of a large pick with them that I could show him? Sometimes seeing is believing.
I can’t find anything where you can see the slings well, but here’s a pick we took with just one sling; we took the whole top in one pick that came in at 9980 lbs. Our line pull was 10,000…
 

Attachments

  • 9DD76FEF-F032-4FF3-8C40-41B5AC134FB4.jpeg
    9DD76FEF-F032-4FF3-8C40-41B5AC134FB4.jpeg
    797.4 KB · Views: 31
The customer sent me some photos she took of the job I just posted, and wrote this on the local facebook 'Rant and Rave' group:

A big Rave to 27RMT0N of 27RMT0N Tree Service for his expert work in removing a very large dead fir tree from my property. I was a bit nervous about having to take this tree down, but 27RMT0N kept me involved and informed every step of the way and then proceeded to take down the tree quickly and with great skill. Even though the tree was close to my neighbor's home, not a branch or twig fell on their property and my neighbors even called me afterwards to tell me how impressed they were because 27RMT0N took the time to walk them through the process as well in order to reassure them.
27RMT0N also chipped up all of the branches and kindly cut the trunk into firewood for me, stacking it all into a neat pile. He then proceeded to use a blower on the lawn and on my deck and voila' no more dead tree, just a beautiful snag that he cleverly trimmed up in order to encourage the decay process for the local birds. If you need to consult someone about any type of tree work, do yourself a big favor and get in touch with 27RMT0N. His combination of experience and creativity made all of the difference. Thank you, 27RMT0N!

We can just pretend she calls me '27RMT0N', but to be honest I can't even remember my username :p

00 fir back 09.jpg

00 fir back 10.jpg
 
I can’t find anything where you can see the slings well, but here’s a pick we took with just one sling; we took the whole top in one pick that came in at 9980 lbs. Our line pull was 10,000…
Couple of questions. And I should add that I'm fairly new to crane work, only about a dozen climbs or so.

The rope slings, I've never used those, only the flat webbing slings either choked through the eye or shackled. If I understand correctly you should never knot them, only use hitches. Correct? I'm assuming the timber hitch is likely preferred for this task?


Also in the above picture, what's the consequences if that piece was 20lbs heavier or if it was misjudged and was even heavier (additional 500lbs) ? I'm guessing by the diameter of the crane cable that a SWL has already been considered when rating your cable at 10,000 and mine at 11,000. Making the cable at least 5-10X stronger than that rating.
 
Couple of questions. And I should add that I'm fairly new to crane work, only about a dozen climbs or so.

The rope slings, I've never used those, only the flat webbing slings either choked through the eye or shackled. If I understand correctly you should never knot them, only use hitches. Correct? I'm assuming the timber hitch is likely preferred for this task?


Also in the above picture, what's the consequences if that piece was 20lbs heavier or if it was misjudged and was even heavier (additional 500lbs) ? I'm guessing by the diameter of the crane cable that a SWL has already been considered when rating your cable at 10,000 and mine at 11,000. Making the cable at least 5-10X stronger than that rating.
Sure, happy to answer!

With the rope slings, we typically use a running bowline for most picks, although some of us use a clove hitch backed up with two half hitches, or some climbers I’ve worked with prefer a reverse cow hitch. Personally, I would not use a timber hitch, as it can slip out if it’s unloaded and reloaded, so to me it’s not trustworthy enough to lift things.

In the picture above, if the weight had been 20 lbs more, or even 500 more, about the only consequences would be the crane load alarm going off, as we would be over the rated line pull. We were well within radius for the weight, limited only by the line pull. (meaning we could pick up far more weight if we had a block rigged on the cable. We would never take a chance on a pick that close to the crane capacity.)

I believe the cable on a crane is rated for use at 1/3 of minimum break strength; steel cable has a lower safety factor than synthetic if my memory is correct. I could be wrong on that though, I don’t remember for certain. Maximum rated line pull is not based on the capacity of the cable though, it’s based on the capacity of the winch on the outermost layer of cable.
 
A big day of big felling. Bare wooded property, a section being cleared for a home and orchard. The customer also has his own tractor and excavator, so no cleanup for me, just laying down big trees. He also has access to an 8' double-powerhead chainsaw mill, large bandsaw mill and kiln, so hopefully a lot of this material is going to be milled and utilized.

8 hours of felling and limbing mostly big doug and grand firs with a 28" 500i and 36" 661, some dead or dying, some a bit scary, some big leaners and a few healthy ones. I actually did a lot of the limbing with my new Ti540 battery saw which did great, can't wait for the climber version to finally arrive. Stumps left high for something for heavy equipment to grab on.

0 big 01.jpg

0 big 02.jpg

0 big 03.jpg

0 big 04.jpg

0 big 05.jpg

0 big 06.jpg

0 big 07.jpg

0 big 08.jpg

 

New threads New posts

Kask Stihl NORTHEASTERN Arborists Wesspur TreeStuff.com Teufelberger Westminster X-Rigging Teufelberger
Back
Top Bottom