70-Ton Crane Crashes into House

I have found that, if you take the largest diameter of the pic and use that to calculate on the green log chart, that it will compensate nicely for taper and in most instances, save the extreme, foliage and branching.

That coupled with a conservative view of capabilities and as Classic said experience. However, I will qualify that "good" experience is best.
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Tony
 
Chris, one thing that I try to do is look at the tree in terms of what I can carry and put into the chipper. I figure a good gauge is 100 lb (I know I probably cant lift that and put it into the chipper my self but over estimating is better than the other way). Then I just start to count the limbs. 100, 200, 400. I only use this on limby stuff with the GWLC for the wood piece. Sometimes if I am unsure about if I could drag a limb to the chipper, it automatically gets counted as 200lb. I know we have all dragged enough brush in our days to have an idea of what we can pull. When in dought, add more to the estimate. We should never be cutting the "well Im not quite sure" piece. Thats how cranes go over. And as always a second set of qualified eyes is always helpful (the homeowner does not count
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Chris, one thing that I try to do is look at the tree in terms of what I can carry and put into the chipper...

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I sort of do the same for the lateral limbs. I then consider the parent stem seporate from the laterals and add the two together.
 
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