Crane tip-over.

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green log weight chart....don't leave home without it.......ANSI Z133.1/5.7.7

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
 
Thats pretty slick ..now all we need is a Black Berry or I-phone application ..

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:
 
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 ..:chainsaw:

Fair?:)
 
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:

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.
 
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


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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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.
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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....
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Not a climb and rig if it doesn't have to be.
 
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 ..
 
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....
attachment.php


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
007.jpg
 
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 ..
 
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

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
 
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
 
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Ok now view it from this angle and note the 3phaze power lines
007.jpg

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.
 

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