Searching for info on distributing forces...

T

treeajnin

Hey guys,

As I am getting more experience doing tree removals now and especially after seeing the great work guys are doing with the new X-Rigging rings. I'm hoping to learn how to better distribute forces. Ive never really set more than 2 blocks in a tree for a removal just because its a pain. And unfortunaly dont have any veterans to learn from at the moment as they quit haha.

Im starting to see ways in my head to add more points to distribute these forces and create situations where I can make a bigger cut.

Id like to supplement my knowledge a little more before i break a rigging point.

Anyone know good reputable sources to learn more about this? (videos,good pictures etc.?)

Always looking to learn more thanks.
 
Treeajnin,

Set as many blocks or rings as it takes. When you get it down, you'll see that the time it takes to set up your rigging will pay off by the size of the wood you can remove with each cut. You'll also become quicker at setting them up over time. Dispersing the load and working at safe limits is what it's all about, if you have the room and the personnel to properly handle what you cut.

Once you start to dial in an understanding of the capabilities of all the various rigging gear available to us, you get more and more creative with it, and suddenly find you're accomplishing things with less effort and often faster. Obviously safety is key, but setting blocks as you move through a crown is all part of a good rigging/felling plan. As you work the crown, you'll often be able to work backwards through the path you took to set them, and what used to be a PITA will just have you grinning.

When I reflect on the work that I did with my crew today and compare it to my first day of tree work, it blows me away.

Take a look at 'The Art & Science of Practical Rigging' (EDIT). It's a great resource. There are also numerous threads right here on the Buzz that are loaded with info. You just need to figure out the search feature of the website, or browse manually and look for interesting titles with lots of replies/pages (unless they are because of some derailment).
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[ QUOTE ]
ASPR'n is from ISA. Pete Donzelli wrote it.

General Fundamentals is Gerry's book.

Both of them should be on every riggers shelf...after they're read of course ;)

[/ QUOTE ]

My Bad! Thanks for the correction, Tom.
 
It might be worth getting a book on statics/ dynamics. An entry level engineering class student would sell it extremely cheap I'm sure and it is pretty easy to follow. This will explain how to calculate everything exactly, giving you a good idea of what to roughly guestimate in the field.
 
There's a quick shot of the three points used on this tree, right at the beginning of this vid:
http://www.youtube.com/watch?v=64zfL2LkYzc

If you use true blue (sampson), you can combine natural crotch and blocks, shackles, X-rings etc.. often works well to set the main block right at the point needed to take the top out, then use satellite points, either NC or blocks etc around the tree as needed.. not the case in the above vid.. Though I don;t often cut with a pole saw, I do like using them for setting and tying rigging lines..
 
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