Have you ever compared the chart to an actual log ..as per the graph ..
Is there a difference given the type of season ?
wet spring/summer
mild wet winter/with a wet spring
Crane tip-over.
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Have you ever compared the chart to an actual log ..as per the graph ..
Is there a difference given the type of season ?
wet spring/summer
mild wet winter/with a wet spring
jomoco
Tree Freak
Try going to this logweight calculator,
http://www.woodweb.com/cgi-bin/calculators/calc.pl?calculator=log_weight
Select Live Oak,
Punch in 32 inches for the small end,
Punch in 36 inches for the big end,
Select a 20 foot length,
And click calculate.
The answer is 11,073 lbs!
jomoco
Thats pretty slick ..now all we need is a Black Berry or I-phone application ..
jomoco
Tree Freak
Careful Hoisty bro!
Yu might learn somethin an start usin a full compliment of CW's, and usin your mainboom for fat trunk wood as a rule too!
Aint we modern?
jomoco:greenchainsaw:
You dont tell me what boom and CW to use to make a lift ..I dont tell you how to cut a tree ..
Fair?
jomoco
Tree Freak
You dont tell me what boom and CW to use to make a lift ..I dont tell you how to cut a tree ..
Fair?
With my life on the line up there?
Not a chance!
I'm a choosy mother. and I choose Jiff!
http://www.youtube.com/watch?v=fQOUEdSp3Pk
jomoco
LOL... Looks like the operator was just try'n to brush you off ...
food for thought ..Pay attention to this one ..it bites..
http://www.youtube.com/watch?v=N8m3-ITXKjg
food for thought ..Pay attention to this one ..it bites..
http://www.youtube.com/watch?v=N8m3-ITXKjg
Quit being a smart ass, jomoco!!
For one, hoister already explained that some cranes have a better chart with the jib on......Also, for that tree, they needed the jib to reach the back picks....
Third, the agreement between the crane and tree co was no doubt to pay for the crane w/o it's full complement of c/w's.
I've already explained what the main problem was, which was the way the climber made the cut.
FWIW, that tree was a valley oak, which is lighter.
And, of course, the log was much much smaller than that.
More like 4000-5500 lb
Yes, do it all the time. I like to be able to estimate the log weight within 10-15%, then tell the crane op how much tension to apply. If correct, the pick gently floats up and away. No shock loading, no worries.
There is quite a variation, throughout the seasons, in wood weight.
As well, with conifers, which is where I have the most experience, the lower 40 feet of the tree can be 20% above the log charts.
Further, redwood or sequoia, especially young, fast growing trees, can vary by huge amounts, from winter to spring and early summer. The charts show redwood at about 48 lb per cubic foot, if I recall correctly. I've weighed a cubic foot of it at 76 lb! same as live oak on the chart, the heaviest wood in the US of EH!!
Gerry Beranek, the guru of big trees, who lives in redwood country, says that there's a huge seasonal variation in the load sizes that can be hauled to the mill. Not so with our Douglas-fir. Yes the weights will be a bit less in winter, but the wood is seldom so heavy that the truck can't be loaded quite high on the bunks.
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treevet
Addicted to ArboristSite
I agree, I meant no animosity toward the op at all, it was the tree man that screwed the pooch here imo. I for one would not even have used a crane on that job. If I use a crane it will be absolutely necessary. I tried to use one on this job but the local crane service is scared of trees. I figure he had an incident similar to this one. I have spoke with him since and explained that I would cut very small pieces and may get to him to help on the next similar job. I ended up doing this job without a crane and it is way worse than that oak.
I don't know Rope....what you're showin here doesn't look that scary. These posts that "I would have just climbed and rigged it without a crane" are all just conjecture. This was a pure crane removal. The opportunity to set up one and the liability and the need to move the material from the rear to the front.
I think you need to find a co with some balls. My favorite 4 ops all have ice water in their veins. One of them won't do any tree work for anyone but me. You don't want a scaredy cat pulling the controls in the seat. Might bounce the headache ball of your noggin.....This....is a crane removal....
Not a climb and rig if it doesn't have to be.
don't care about your noggin enough to protect it a tad?
I kinda thought that in the back of my head RB ....
The chart is a round about ....so given the season and predominant weather ..it would be a little wiser to take smaller bites ..to try and get a better idea of how the tree is weighing out the further you go down the trunk ..
The chart is a round about ....so given the season and predominant weather ..it would be a little wiser to take smaller bites ..to try and get a better idea of how the tree is weighing out the further you go down the trunk ..
ropensaddle
Feel Lucky
I don't know Rope....what you're showin here doesn't look that scary. These posts that "I would have just climbed and rigged it without a crane" are all just conjecture. This was a pure crane removal. The opportunity to set up one and the liability and the need to move the material from the rear to the front.
I think you need to find a co with some balls. My favorite 4 ops all have ice water in their veins. One of them won't do any tree work for anyone but me. You don't want a scaredy cat pulling the controls in the seat. Might bounce the headache ball of your noggin.....This....is a crane removal....
Not a climb and rig if it doesn't have to be.
Ok now view it from this angle and note the 3phaze power lines
Exactly, not that tree, vet! Woulda been a nightmare dragging all that crooked brush around those narrow side yards.
Thats your big kicker right there ..... looks less than 15/20 feet away
Cant speak for your locale ..but I need them covered ,and a hold-off put on the line ..then maintain .my limits of approach ..
Thats an expensive one ..
Cant speak for your locale ..but I need them covered ,and a hold-off put on the line ..then maintain .my limits of approach ..
Thats an expensive one ..
jomoco
Tree Freak
How many lower trunk picks on big oaks do you use a jib to pick RB?
Like maybe zero, nunca, nada as in never?
You've got to take the bloody jib off to travel anyway!
Why not take it off once the tree's brushed down to big wood?
Did they intend to pick the rest of the lower trunk with the jib on too?
Why defend these dopes any longer?
jomoco
ropensaddle
Feel Lucky
Looked like my Mack grapple truck would have got in if it was dry.
That was an impressive tree, rope. I well remember your story!!
Here's a video ya'll will like! Took nearly 5 days for Georgio and his crew to do this 10 foot sequoia. No crane access. What a waste of great wood. But they knew nothing of milling, or had anyone interested in it....They obviously knew how to get the behemoth down!
http://www.youtube.com/watch?v=d63jGiUMli8
Here's a video ya'll will like! Took nearly 5 days for Georgio and his crew to do this 10 foot sequoia. No crane access. What a waste of great wood. But they knew nothing of milling, or had anyone interested in it....They obviously knew how to get the behemoth down!
http://www.youtube.com/watch?v=d63jGiUMli8
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treevet
Addicted to ArboristSite
Ok now view it from this angle and note the 3phaze power lines
Well that certainly adds to the danger factor but they can be matted. I just don't think you can compare a huge decurrent to a telephone excurrent such as this white pine or even a redwood in the complexity of the removal.
