JLG manlift tips, kill sowrker, in rare accident

A man died yesterday after the boom lift he was working in toppled over after a wheel broke through a manhole cover, in Philadelphia Pennsylvania.

The lift was being used by a man to inspect the steeple of the First Presbyterian Church at 21st and Walnut Streets. The operator was steering the machine, which was telescoped to its full 120ft (37 metres) height, when one of the wheels went over an electrical cable manhole cover which gave way.



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The boom lifts wheel broke through a manhole cover


Witnesses say that the lift, a recent model JLG 1200SJP owned by Interstate Aerials, tilted over, recovered sending the boom the other way it tilted again and the second time went over, with the boom striking a building opposite before landing on a parked utility truck. The operator was wearing a harness and was left suspended from his lanyard.

He was rushed to hospital where he later died from his injuries, a woman passer by was also injured. The falling lift also caused considerable damage to street lights and signs

Editors Comment

This is a very rare type of accident, a boom such as this will sometime recover from such an incident and as long as the operator has a harness on he stands a good change of surviving.

Sadly he clearly had not seen the manhole cover on the ground before going up, or from the platform as he manoeuvred. Checking the ground conditions before driving such a machine from such a height is essential, and will normally prevent such an accident occurring.
 
Those accidents happen more than they think, it may not be a manhole cover everytime, but those machines are so easy to rent any idiot could get one and they do then usually wind up lying next to the rolled machine because they don't think about the ground underneath like the old septic tank or the new foundation.
 
Those lifts are so ridiculously heavy.I have used them on removals a few times now they are a great tool but,cautious probably over cautious around storm drains and such and I haven't yet gotten used to the feeling of driving it at full extension. I came to the conclusion that just because you can drive it at full extension does no mean its safe this is evidence .
 
Re: JLG manlift tips, kill sowrker, in rare accide

A regular tree truck will go though those covers. They seem to be everywhere in the city.
 
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Erik, I believe those types of lifts are designed to be moved at extension. Ive never used one, so Im just speculating.

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Yes a few inches at slow speeds on a concrete floor in a factory. But most people don't think about that.
 
I saw this on every local news channel the other day. pretty sure a spokewoman said the machine weighed 8 or 9 tons??? Try 20 tons! I felt bad, especially when I heard he was only 40 and had a family. Its didn't look like it was fully extended when it went over, of course when the "ground" gives way, that may not matter.
 
Re: JLG manlift tips, kill sowrker, in rare accide

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That's not a manhole cover, it's a plastic cable tv handbox.

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That's what I thought. The man hole is next to that other cover. Plastic or fiberglass?
thinking.gif


I would think the man hole could hold the weight of on of those... I think...
 
Re: JLG manlift tips, kill sowrker, in rare accide

Those boxes are just a molded plastic.
That steel cover next to it looks too small for a confined space, I'm guessing it's just an access for the city utilities like water.
 
Re: JLG manlift tips, kill sowrker, in rare accide

Yeah the 120' I used weighed 46klbs and could put 26klbs on one tire. There is no problem driving at full extention, the problem comes from not inspecting the ground for hazards or changing conditions.


60'+/- of outreach, depending on the weight.
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