Crane tip-over.
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treevet
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I am still buying into that theory. Esp. if the choke (single) was on the side of the holding wood which would have closed the cut, pinched the bar and likely almost had to uproot the tree before breaking. Maybe even it was off a little from the holding wood and that would hold a lot until it finally and suddenly busted causing a coiling upward of the boom, then a downward bending of the boom exacerbated by the temporarily free falling log until the boom stopped moving with the piece.
treevet
Addicted to ArboristSite
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Just thought I might add to my last post as an afterthought.....maybe you have learned a little on the tree side of the operation as well because I have done hundreds of craners and witnessed many as well and in every case it has ALWAYS been the ("ignorant") TREEMAN that ENGINEERED the removal not the CO.
oldirty
Addicted to ArboristSite
ok. you guys almost lost me on this thread with all that math stuff but coming back to it with some new pics and from my past experience.....
i'm staying with the idea it got cranked right off the stem.
either that or the climber got his saw so thoroughly pinched the crane op had to pull off some sort of magic trick to free the saw he ended up with his boom tip in no mans land and lost it.
jomoco you dead on with that being a horse#### cut. look at that little sliver left on the stem. you'd think if he was booming over that part it wouldve snapped under the pressure but its still there which leads me to think that was his first cut. then he came from the other side and as he was finishing (not to the boom which is amazing in of itself) the cut popped from too much cable or boom up.
anyway i'd love to read the report.
good thread boys.
btw snap cuts are over rated. i ride the ball 8 hrs a day 6 days a week and i can count on 1 hand the amount of snap cuts i make a week. might not be more than a couple fingers even.
hey treevet. i am one of those 5%ers bro.
stay safe out there.
i'm staying with the idea it got cranked right off the stem.
either that or the climber got his saw so thoroughly pinched the crane op had to pull off some sort of magic trick to free the saw he ended up with his boom tip in no mans land and lost it.
jomoco you dead on with that being a horse#### cut. look at that little sliver left on the stem. you'd think if he was booming over that part it wouldve snapped under the pressure but its still there which leads me to think that was his first cut. then he came from the other side and as he was finishing (not to the boom which is amazing in of itself) the cut popped from too much cable or boom up.
anyway i'd love to read the report.
good thread boys.
btw snap cuts are over rated. i ride the ball 8 hrs a day 6 days a week and i can count on 1 hand the amount of snap cuts i make a week. might not be more than a couple fingers even.
hey treevet. i am one of those 5%ers bro.
stay safe out there.
treevet
Addicted to ArboristSite
already knew that od
ropensaddle
Feel Lucky
You seen "Saw for Hire " to did ya ?
I know Im an operator ,,its my choosen profession ..not a "tree guy"...ok Arborist..
I was gonna leave this thread be when i saw it intially ..and take a "leave it to there ignorance attitude"..
But
I felt that if I could lend some knowledge..offer some expertise ..hopfully a few would get it and the arborist and operator could work together to make the work place a safer one ..and a more enjoyable experience in the work place ..after all its only a job ..and we all have a family
Theres been guys that have posted with an open mind,and hopfully learned something in the end ...all and all thanks for putting up with me ..
To my own humbling ..I found out that arborist are not as ignorant as i first thought ..and want to understand ..if one would take this message board as the demographic..
theres enough knowledge here to make an inccident like the one that started this thread ..a very rare occurance in the future..
Ok I am no crane operator but here is what I still don't understand. Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
Ok so some turf damage ,wow; now that's just horrendous
As always, Rope, you got that right. I was thinking the same thing when I saw that jib extending 40-50 feet out into the back yard with no obstructions.
I suspect that in the final analysis, they rigged the heavy log to pull away from the house with a small jump, not realizing that they were already close to the limits of their crane. When the load swung away from the house, the boom deflected, the load and momentum was too great, and down it went.
It doesn't look to me like they needed a crane at all, except to maybe sweat less or never touch the lawn.
I suspect that in the final analysis, they rigged the heavy log to pull away from the house with a small jump, not realizing that they were already close to the limits of their crane. When the load swung away from the house, the boom deflected, the load and momentum was too great, and down it went.
It doesn't look to me like they needed a crane at all, except to maybe sweat less or never touch the lawn.
treeslayer
Addicted to ArboristSite
Ok I am no crane operator but here is what I still don't understand. Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
You can't hurt dirt.
Ok I am no crane operator but here is what I still don't understand. Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
Im no arborist but I also dont understand :Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
Ok so some turf damage ,wow; now that's just horrendousNot to be smart but ..it's the arborist's work ..I can suggest that ..but its his dime.
Yup can say i did ..really like the loggsplitter's in here ..have to build my own soon ..
As long as you guys dont try and pull this with me ....Im fine
http://www.dailymail.co.uk/news/wor...ing-bush-gardener-brought-CRANE-mow-lawn.html
treevet
Addicted to ArboristSite
treevet
Addicted to ArboristSite
Im no arborist but I also dont understand :Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
Not to be smart but ..it's the arborist's work ..I can suggest that ..but its his dime.
You saying you don't see any blame on the crane op's side?
It was my opinion that the treeman engineers the job. Not to say the c o does not have veto power on the picks. Not what is picked but rather how much is picked. The c o is also gonna ultimately decide where to set up but the treeman is gonna try to control this as well.
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Don't worry this operator isnt going home with nothing ..as it sits now OSHA inspector's have a mandate to find all infraction's and charge accordingly
I saw ine right of the hop ..the operator is responsible for securing the area around the crane with caution tape ....Its the generals responsibility to tape the area and post the applicable warning signs..for sure I know two fines are coming..to the operator here ..his crane and the site he's in in general ..In other words ..the fall radius of the crane ..360 from the pin should have been taped of ..But we're nice guys ... and things like the caution tape we let go ..but its ours to pay when the pen meets the paper ..
As far as the incident itself ..well ,...for sure something will be drawn up ..I dont want to speculate on that ..He's gonna need a good lawyer depending on whats decided in the end ..
MHO ..75% of that incident belongs to Reliable crane : they did not exercise diligence in arranging the job... and were to worried about its competitor's picking up the work ..They should have sent a 175 ..or walked away ..let the next guy make the evening news ..
..the other 25% to the operator and the tree man ..
Its possible they didn't get a street permit to sit the crane up in that cul-de-sac..pay duty officer's and signage at the entrance ..that wont be OSHA that will be the local cop's..
There's a possibility of dozens of fine here ....
then the bills ..the ambulance ,fire department,cops ,can all submit a bill to one or all the contractor's for coming out..
Your right ..the op does have veto power ..but the estimation of the weights to an extent ..I'm at the tree man's mercy.
To be honest Id feel better if the climber had a tape to measure the diameter ..then translate that into something i can relate to my load charts ..
you know
Pine 42lb/cuft
birch 44lb/cuft
oak 59lb/cuft
and so on ..
Its only a cylinder for the most part a tree ..Pi x Dia x lenght adjust for taper .. time's the unit weight ..but you knew that ..imsure you did ..
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Well if that's all you've learned then maybe you can learn to build the best one.
Boo Ya !! ...
She spilts both way's ..?
treevet
Addicted to ArboristSite
splits on both sides, self propelled, has a loglift, can buy a conveyor extension, has a 4 way split. splits fall into the well and bye bye. Wish I bought one instead of my Timberwolf stuff. Made this little pile of firewood and then some.
treevet
Addicted to ArboristSite
green log weight chart....don't leave home without it.......ANSI Z133.1/5.7.7
treevet
Addicted to ArboristSite
How much a for bush Chord ??? LOL...Geez ..wish i had that in the back yard ...
This may be up for sale soon. City shut the poor guy down.
ropensaddle
Feel Lucky
Im no arborist but I also dont understand :Why was the spar not merely felled then cut to the desired log and hoisted out? It would have been easier,safer and if it was too heavy it could be set down no shock at all. There was plenty of room to fell that spar.
Not to be smart but ..it's the arborist's work ..I can suggest that ..but its his dime.
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.
