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| | #1 (permalink) |
| Sappling Join Date: Jan 2008 Location: South Africa
Posts: 5
| Ekka i saw your vidoe clip of the resistograph. Now can you tell me is how much did you pay for that nifty tool ? And perhaps a place where you can buy them from like a online store. I spend a lot of time just looking at pics of them and no body can help me. |
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| | #2 (permalink) |
| Admin - Dip Arb & Hort Join Date: Jan 2007 Location: Brisbane
Posts: 7,767
| That was a demo in a park, I dont own it but you can buy them from here. Resistograph :: IML,Inc. Fujikura Europe | Speciality | Products | Decay Detection http://www.iml.de/ There's a 300mm version or 500mm version. One idea is that if trees are OK to 30% wall thickness then you dont need to drill much further than that 30%. So a 300mm deep hole into a 2000mm (2m) dia tree would suffice.
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| | #3 (permalink) |
| Over mature heritage tree Join Date: Jun 2007 Location: Sydney
Posts: 501
| In my experience,though limited, the value of resistograph testing is questionable due to variation of readings from large hollows to severly decayed heartwood. I have seen trees condemned that could have remained for many years and trees deemed safe that have failed shortly thereafter. My opinion is resistograph is a useful tool, used in conjunction with educated and experienced Visual Tree Assessment, not a sole diagnostic tool or process in it's own right. But I may be wrong!
__________________ Heightmaster |
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