Climb020 said:A general rule of thumb is 10% of hardwood to be safe to climb but also differs by species as well as other things.
when i first read the title i assumed impossible spots, yea unsafe to climb if you got wires there you got some chance of equipment, yea do not climb, more info would be good, who is da client? why is the tree stll standing? , whats the power company say will they assist? who is involved in this debate about climbing this thing, what #s are out there on this, are any #s accepted at this timewoodchux said:
Unless Woodchux is a complete moron, the thread is a joke. Even with a safe tie in, there's no way this tree is safe to climb. It's ready to implode on itself just standing there. One good chomp from an ant and it's comming down. A woodchuck wouldn't even climb this thing.Climb020 said:A general rule of thumb is 10% of hardwood to be safe to climb but also differs by species as well as other things.
diltree said:I would climb this with hopes of prunning and restoring this tree. Ofcourse it would be a gaffless climb, I would never want to create any wounds in my Restoration attempt. The rule of thumb is 10%, so I should be ok climbing up the tree, and with over 10% of sapwood remaining the tree should bounce back with plenty of new growth next spring.:monkey:
Ha, ha sweet response!!diltree said:I would climb this with hopes of prunning and restoring this tree. Ofcourse it would be a gaffless climb, I would never want to create any wounds in my Restoration attempt. The rule of thumb is 10%, so I should be ok climbing up the tree, and with over 10% of sapwood remaining the tree should bounce back with plenty of new growth next spring.:monkey:
Very funny, actually some ISA cert. people on this site would believe this. Where exactly does one draw the line? Where does the desire to preserve horribly compromised trees stop and the desire to preserve human life kick in? I remember this 10% "rule" from an earlier talk here about removing hazard trees around powerlines, can't remember the poster. Stop the insanity. On a related note, it will be intersting to see how many "safe" trees in the PNW now get cut down, after so many of thier "safe' brothers came smashing down onto powerlines, houses, cars etc recently. Now even treehuggers have the fear, the news has been full of nasty tree stuff, good, and good for business as well.diltree said:I would climb this with hopes of prunning and restoring this tree. Ofcourse it would be a gaffless climb, I would never want to create any wounds in my Restoration attempt. The rule of thumb is 10%, so I should be ok climbing up the tree, and with over 10% of sapwood remaining the tree should bounce back with plenty of new growth next spring.:monkey:
adkranger said:hollow Silver Maple in a municipal zoo, 14" DBH.
After down measured 1.5" of healthy wood around the complete circumference, rest air space.
I'll pass.Climb020 said:If you are too incompetant to do the job then pass it on.
Ekka said:14" DBH = 7" radius
1.5"/7" = 21% wall thickness, now imagine 10%! Then chuck in a crack, hollow and decay...
Good advice, just did that to illustrate the numbers for others.
Climb020 said:"The table below shows the minumum wood thickness that constitutes a 50% strength loss. When using this table, remember to subtract the bark thickness from both the diamter measurements (D-tape value minus two times the bark thickness). Stregnth loss will be greater (trunk weaker) if there are cracks, cavity opening or other weakening factors. In those cases, the thickness of sound wood for a given trunk diamter will need to be greater than the values listed for it to be climbable.
Diameter of Stem/limb * Thickness of sound wood *
10" 1"
20" 2"
30" 3"
40" 4"
50" 5"
*Not including bark"
If you still do not agree with what I have said then go and take up your case with TCIA being you must be more educated then the indiviuals that work there.
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