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| | #1 (permalink) |
| Eric Frei Administrator - Brisbane L5 (Dip) Hort Cert III Arb + some Join Date: Jan 2007 Location: Brisbane
Posts: 6,869
| The term barber chair or barber chairing in tree work refers to the slabbing up of timber when doing the back cut (when felling a tree) resulting in a very dangerous out of control situation. It can also occur on large limbs in trees. i've attached a tree felling power point file, ppt, which is around 3mb with felling techniques and it shows what goes on although I disagree a little that a "dutchman" is the cause. The predominant cause is forward leaner, species and too narrow a gob on the scarf. http://www.treeworld.info/manualuplo...arberchair.ppt The guys down Victoria Australia fell huge eucs called Mountain Ash (eucalyptus regnans) which is prone to barber chairing. Some methods to overcome barber chairing is strapping the timber above the cut, bore cutting your back cut setting up the hinge then coming out the back of the tree opposite to the normal back cut ... sometime done with a strap release. Of course there's the "fish cut" which I've never tried which is also supposed to help prevent the barber chair. ![]()
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| | #2 (permalink) |
| Mature tree Join Date: Nov 2007 Location: hiding
Posts: 386
| ash here are the main culprits. their straight grain and sizeare the main reasons. if your saw is dull and you dont bore cut the result is that the tree falls faster than you are able to cut it. you try to stay there and keep cutting when finally the section of hing is too big to snap and too small to hold the weight of the tree in its increasingly horizontal position........it splits up the trunk... when the tree hits the canopy forces the trunk sometimes backwards over the stump. when i first started out we were cuttingon a flat. the trees had no leans. I fell several large ash that consistantly chaired. the reason was.....however you lookat it.....either the fact that i didnt bore cut or my saw was dull{not allowing me to keep up with fall. |
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| | #3 (permalink) |
| Semi-mature vigorous tree Join Date: Nov 2007 Location: Parramatta. nsw. Australia.
Posts: 219
| You're right about those straight grains. A bloke here in Blacktown had his throat cut a few years back doing a Poplar. His son stuck his finger in the vein till the paramedics came. |
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| | #4 (permalink) |
| PDF King & Arborist Extrodinaire Join Date: Feb 2007 Location: Townsville Nth Queensland & Gold Coast Sth Queensland
Posts: 1,645
| Hopefully some of you will find this site useful Dutch Push in 1 side of Face Kenny can be a little hard to understand sometimes with the words he uses but the animation of the baberchair is very good.
__________________ Sean ![]() Trees are poems that earth writes upon the sky, We fell them down and turn them into paper, That we may record our emptiness. - Kahlil Gibran |
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| | #5 (permalink) |
| The Tree World Bandit Join Date: Oct 2007 Location: Lancaster, Ca
Posts: 1,254
| That's actually pretty interesting. I like where he says "This is how people get Killed Dead!" The frames move too quickly to read the text and keep up with whats happening though, I had to keep refreshing the page and catching up.
__________________ Ken Fessia I.T.S.A. Tree Service (661) 916-4703 |
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