How big is too big? or, Is there a too big?

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Wow Driver you are one badazz, but you nearly got a terrible surprise. Glad it worked out and no one hurt or equipment damaged. Lesson learned I am sure. Show the clips dude.

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No one was ever in danger, ever. Just to clarify. Could have had blacktop dented and/or some of our equipment damaged and broken ropes.

So many videos to choose from in editing, that one isn't in the top of my list I don't think.

On that subject. Videos of other jobs will be shown soon, I've already scheduled the first one to be released, Monday the 29th.

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Gotcha, did not think you would put your crew or yourself in danger. Alls good X.
 
Wowza. That's way to close for me and expensive equipment. I would have had to move that truck before the cutting started. Everything else looks doable but as you figured out you never really know all of the forces your putting on your gear.
 
Things were probably close to being maxed out. Red oak was extremely heavy that year, heaviest I've ever seen it; that I didn't know at the time, until several deliveries to the mill.

WLL

Load=all parts of a tree

How many of you really know the weight of the tree parts you are rigging? How accurate are your estimates (guesses?) If you are accurate, how long did it take you to gain the ability to know the weights you are rigging?

How much does that tree weigh? If you don't know the answer to the question how can you do the necessary math?

What are we doing to refine our skill/knowledge in this area?

Too bad the mill (sawlogs) doesn't pay by the pound.

If the butt jumped off the other side of the stump would you be shopping for new front running gear for the kboom?
 
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Wowza. That's way to close for me and expensive equipment. I would have had to move that truck before the cutting started.

[/ QUOTE ] YES, me too, I was not myself. I was too tired to care; odd.
 
The way I learned tree weights was working with a crane that showed what the weights were. I would constantly ask my brother, "what was the weight of that one?" (he always the crane op when i needed a rented crane, I would use him)

Then, for several years, I would say something like, "I bet that one was 4,000 lbs" and he would usually reply yeah, pretty much right on, 3,900 lbs. I've been "right on" for quite a few years now and feel good about guessing weights.
Hollow trees are the only ones that get me, they are often more weight than I would guess.
 
Can anybody describe, or direct me to a resource which describes, a method for estimating how much weight a stem can theoretically hold? A number based on tree species, diameter, length of lever, inclination, and other known, quantifiable factors. A number to work from, apply a safety factor to and further adjust based on less quantifiable factors, would be nice.

Do any of you use anything like this in large or critical rigging situations?
 
Interesting subject,
-Structural integrity of tree
-condition of equipment & WLL
-skills of the man on the other end of rope

Those would be my initial 3 questions I would ask myself before making my move
 
Many mentions of rope age,type,landing zone, etc but don't forget about the sling that' catching the whole load, rigging point diameter, crotch conditions below you, swing etc. I haven't made it through all the posts yet so sorry if it's repetition I'll be through them soon.

For wood we have a small cart that works great with 4'-7' logs so if they can lower right onto that with less lifting I know my groundies appreciate that.
 
rockettree said:
Can anybody describe, or direct me to a resource which describes, a method for estimating how much weight a stem can theoretically hold? A number based on tree species, diameter, length of lever, inclination, and other known, quantifiable factors. A number to work from, apply a safety factor to and further adjust based on less quantifiable factors, would be nice.

Do any of you use anything like this in large or critical rigging situations?
Click to expand...

Isn't there a computer program that you input all these variables into, it runs it through it's formula/process and outputs a yeah or nah (or something like that).

If anyone has that program and can tell us about it I think that'd cover things you need to know and how to get to an answer. Just a thought. You'd likely have to have a good working relationship with your green log weight chart. But there's my thoughts.

Remember swl,wll and cycles to failure for yourself, your tree and your gear and if you play within that triangle I say go for it
 
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