meanwhile....in Hong Kong

[theXman]

Good golly, looks like I need to draw this.

 

[Daniel]

I never thought it sounded like the groundie was screaming and still do not. the screaming always was timed with the chainsaw bashing on the climber.

It looks that way, but there is an extra scream.. maybe it was the climber screaming... even so screams can mean startled, scared, or just hit, but not necessarily hurt. It sure looked like he wasn't hurt by the way he was looking down. He was concerned about what was going on on the ground.. We've all been there.. that's not what you do when you've been hurt.

 

[theXman]

It looks that way, but there is an extra scream.. maybe it was the climber screaming... even so screams can mean startled, scared, or just hit, but not necessarily hurt. It sure looked like he wasn't hurt by the way he was looking down. He was concerned about what was going on on the ground.. We've all been there.. that's not what you do when you've been hurt.

okay. I thought he was bent over in pain not looking down. Doesn't matter. Just really seemed evident to me that screams went perfectly with the smacks and groundmans voice was higher pitch, seemed to match climber. I'm going to do a drawing this weekend I hope. Good learning oportunity for all of us and I want to make sure what we are talking about is clear to readers.

 

[sherwood7]

The end of the lowering line looks to be anchored to a lowering device which was not located on the base of the tree being removed. Thus when the top hit it it introduced force into the system much like a tag line for pulling a tree over. Not a 2:1, the speed line comparison was much better. This combined with the rigging failing introduced a whole lot of shaking. Of course redirects on the trunk would have got that leg of line out of the way. Accident may have been much worse if the lowering line would have held. The leverage may have broken the stem at a lower defect or cause the tree to up root. Not sure, easy to second guess without being there. But that's the way it looked

 

[TreeLogic]

check out the smoke, dust, mist, whatever it is, right where (and at the time) the sling or rope snaps...

at the 38 second mark

 

[Adkpk]

My thinking is, if it is the groudie screaming it's because he is agony over the suffering of the climber and not because he is suffering himself. As for the climber, it's just all wrong. Sh

okay. I thought he was bent over in pain not looking down. Doesn't matter. Just really seemed evident to me that screams went perfectly with the smacks and groundmans voice was higher pitch, seemed to match climber. I'm going to do a drawing this weekend I hope. Good learning oportunity for all of us and I want to make sure what we are talking about is clear to readers.

If that guy isn't in pain he is made of steal.

 

[Tony]

Umm I think your math is off, if you have 2 parts of line both holding an equal load then you have a 2:1 load on the block( or in this case a rigging thimble), however if both those parts of line are attached to the load (which would be the case if the friction pinched the line between the load and the tree) then you have a 1:1.

So the case here was simply shock loading on poor rigging equipment it had nothing to do with the load line being pinched even for a second.

Yes, 1:1, but in the direction of fall, slowing/stoping any run the ground person may have put in.

Tony

 

[classictruckman]

I understand that, that's what I meant by poor rigging and shock loading. I just wanted to clarify that the force on the block (or lack there of) was not multiplied simply by the line being pinched, it was divided.

 

[Tony]

I understand that, that's what I meant by poor rigging and shock loading. I just wanted to clarify that the force on the block (or lack there of) was not multiplied simply by the line being pinched, it was divided.

Yup, I am with you. Stupid plan anyway you dice it!

Tony