Be sure to double check your dunnage

and by the way i'm just repeating the things i've been taught. you can take them or leave them or shove them up your whatever, i don't care. i built cranes for a living. i haven't always had the pleasure of being a tree guy. one day when i figure out this mac i'll post some pics. but then again those are for me and there is no one on here i'm trying to impress
 
Sinko

great post! that is what I was trying to say, cheap chinese crap, without pssing off the Libs around here! the crane was setup wrong, but was definitely overloaded. trouble with guys who are only around boom trucks is they can get away with plywood, improper setups, and other mistakes that wouldn't fly on an AT, crawler, or lattice boom machine.

As for how do you pick 60 tons without 50ton of counterweight? you used to BUILD cranes and your asking this?! that would mean our 60T Grove 3055 AT crane would need to weigh 150K lbs going down the road! 100K for the weights, and 50 or so for the boom & superstructure....!

your math is off by a bit.

3x outrigger spread is minimum. some surfaces we do more! I see hacks around here with boom trucks, setting up on asphalt with ZERO dunnage, just metal pads sitting on the pavement!!! true stupidity and ignorance.
 
by the way i thought about it a little while on the out riggers in or out issue. i think the opp retracted them so he could get of the crane with out busting his whatever. maybe they broke but they are supposed to have keeper pins in them about 1 1/2 inches. the sear required to break those is tremendous.
i was taught that in good shear an A325 3/4" high strength bolt was good for 3 tons before it broke. a 1" bolt 6 tons, so a 7/8" bolt 4 1/2 tons. using this logic we come to the 12 ton min breaking strength for that grade bolt or we can go with crosby and they say a 1 1/2" shackle has a working load of 17 tons so with a safety factor of five in there the pin has a breaking strength of 85 tons or 170,000 lbs. per pin. I'm going with crosby on the strength of this pin. if the pins were in place, i don't think in that situation they would've broke chinese steel or not. thus my non-inebriated conclusion
 
the crane is probably designed without those pins......our outriggers have none, whereas our boom has dbl locking hydro pins on each section.

what kind of cranes did you build? what manufacturer?

how are facts inebriated, but your horse poo isn't ?
 
dude this is what you do every time someone doesn't agree with you. making you a douche in my book. barnhart i didn't put together a lot of large hydros. i mainly built large conventional rigs. 11 320's with sky horses, 2250's with super lift trays, 9310's with and with out sky horses, 11-250's with sky horses, a few 150 ton older lick belts, and a liebeir or two with a lattice boom. what have you built?
 
bb
it was nice talking with you yesterday as well. thanks for all the info on the new small hydros. be safe
jeff
 
[ QUOTE ]
Jeff

It was great talking with you on the phone this afternoon! Your a real good guy with lots of knowledge in the rigging/iron/Crane world.

Be Safe

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bb
it was nice talking with you yesterday as well. thanks for all the info on the new small hydros. be safe
jeff

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[ QUOTE ]
[ QUOTE ]
Jeff

It was great talking with you on the phone this afternoon! Your a real good guy with lots of knowledge in the rigging/iron/Crane world.

Be Safe

[/ QUOTE ]
[ QUOTE ]
bb
it was nice talking with you yesterday as well. thanks for all the info on the new small hydros. be safe
jeff

[/ QUOTE ]
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beerchug.gif


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I know! I was just sitting here thinking "I know both these guys, they're both douches. They would get along just fine face to face!"


SZ
 
Am I missing something in this thread? It's obvious the outriggers were put down fully retracted because the pipes were in the way. Yeah, I guess the crane will go over, I don't think it has a chart for fully retracted outriggers. I don't know who dreamed up the outriggers got pushed back in story, maybe the operator or owner so they won't look so stupid. Looking at the pictures there is no other logical explenation.
 
[ QUOTE ]
Am I missing something in this thread? It's obvious the outriggers were put down fully retracted because the pipes were in the way. Yeah, I guess the crane will go over, I don't think it has a chart for fully retracted outriggers. I don't know who dreamed up the outriggers got pushed back in story, maybe the operator or owner so they won't look so stupid. Looking at the pictures there is no other logical explenation.

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I am NO crane expert, or picture expert, but I find it hard to believe this crane came over, and the geniuses working the site had the idea to put the pads out in the street, and then force the outrigger pistones out of the outriggers.

See the red circles in the attached picture for what i am talking about.
 

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No, they had them out and down on the street side but could'nt get them out on the pick side because of the pipes, so they skipped the out and just put them down. With the outriggers unextended and just down if you swing the boom to that side and extend you'll upset the crane with an unloaded hook, that's probably 30,000 pounds worth of boom. The fully extended outriggers on the street side did them no good with the boom out and extending the opposite direction.
 
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