Quote:
Originally Posted by Treelore  Difficult to say with the info given Q. Few more photos would be helpful. Would be reluctant to tree to ground cable in this situation as it would place excessive forces on cavities that is unnecessary. Is it Municipal? Depending on budget I would be inclined to recommend that you oversee the construction of a steel reinforced covered walkway for the length of the target zone with a cage like roof so people may still enjoy the forest outlook but allow the trees around to fall apart at will. |
What more info do you need Treelore? Absolutely everything about the tree and it's surroundings have been mentioned, if not shown in the pictures...
What kind of "cage" do you suggest? What dimensions are we talking about here? You should be able to calculate the weight and impact force on a free fall with the details I've given. Above all... What would you calculate? Impact of the section above the structural defect? Or would you take the whole tree into account? What form must this steel structure have to take on these kinds of forces? And what sort of beams are necessary to build such a construction?
Do you see any reason why there's further investigation needed? What tools would be needed for such further investigation?
What do you think of deflective cabling? That's cabling wich is meant to guide the tree to a good location in the event of failure.
What do you think if I say we cabled this tree using a non- invasive spider-legged type anchoring position with a total of 32 metric tonne cobra guidance cables (2 double cables of 8tonne each)? Do you think, considering the weight calculation and sheer dimensions of the tree, that I am way off the mark again?
When I did the calculation and the assessment for treeseer on the oak, you were able to tell us that my calculation was way off the mark, with a lot less info. At this point you should be able to tell us the same considering the info you have, wich is way more then what you had on the oak.