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Originally Posted by quercus  By not seeing the surrounding area of this tree, I'd suggest large concrete blocks placed at a distance from the tree that is larger then 1.5 times the crown spread. Estimating the size of the tree, I think they'll have to be somewhere between 25 to 30 metric tonnes of weight. |
That much, eh?
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Are there any other trees that may come in handy as an anchor point?
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No.
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Placement of cables is also discussable. What will the main purpose be? holding the crown on the tree untill it eventually collapses of will you let nature have it's way and deflect it away from the house in case of a structural failure?
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Yes, plus the thought is that a cable would lessen movement and thus lessen the likelihood of failure.
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Reducing that windload could be accomplished by deadwooding, and crown opening on the inside.
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The crown is very open already, due to the loss of the 6 branches. I deadwooded it yesterday.
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Could you take some more pics of the wound and of the tree and it's surroundings?
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Yes that pic of the wound was crappy; I will try again with morning light.
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What is your budget on this? very very important on this one.
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Not infinite, but the tree is of high value.
Ekka I hear what you are saying about the guys pulling "off heave" and that is a concern. I'm not sure what the tautness should be, or whether using two guys would alleviate or exacerbate that concern. O and ps I linked the client to this thread.