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	Tower Crane Mishaps

This site is designed for Mr. Thomas Barth.

Early on the morning of Sunday 1st February, around 9am,a Wolff WK122SL tower crane partially collapsed. Fortunately the site was unoccupied at the time and nobody was injured but the results would have been catastrophic had the crane fallen onto a nearby suburban railway line or onto houses which are nearby .60 residents had to be evacuated as a safety measure and the railway line was closed creating commuter chaos.

It is believed that high winds caused the tower crane’s jib to bend and snap, almost completely crushing the operator’s cab as it fell towards the ground. A single pendant connected both to the tower’s main mast and jib did, however, remain intact preventing the entire jib length from crashing down onto the job-site.

Why the crane collapsed focuses on the cranes slew brake. Typically, such cranes are left with free slew to allow the jib to rotate away form the prevailing wind and thus not catch its full force. Unconfirmed reports claimed that the brake had either been left on, or had somehow applied itself or jammed, thus preventing free slew and subjecting the jib to extreme side winds.

Recovery was almost ready to commence on Sunday evening, but then the Health and Safety Executive (HSE) stopped all activity as high winds had come in. These winds did not drop until Friday, but to allow the railway line to reopen, and the evacuated residents back to their homes, the cranes ballast was removed and the main jib secured using a mobile crane on Tuesday evening. On Friday, the jib and the cranes cab were removed, the parts subjected to a full inspection. An official reason is yet to be given and may never be released to the general media, as currently there are over 100 tower cranes at work in Dublin and the public don't want to think that every one of them could fall over!

Ed Fahey

Click on the pictures BELOW to view larger pictures.

	Heavy winds folded a construction crane over a building. The ball of the crane landed on the jail next door. When in doubt; Don't Wip it out!
2 December 2003 in Rotterdam. 1 man killed and 2 wounded. The story go's that several bolts from the Tower crane cranefoot were used and probably they were over-tightened. The crane operator survived but was badly wounded. One man who was working down in the building where the crane fell, died. He had nothing to do with the building site. And he was employed with a crane rental company.
On land or water you have to stay in the load chart see the results of not staying in the load chart on water.

POTAIN tower crane that collapsed on 7th July 2005 at 13:10 local time Hong Kong. The crane operator was killed, but not one public or site workers was hurt, the bottom section of the mast was broken, contributing factors have yet to be established.

Below: This accident happened when the operator was on a cell phone and operating in override mode on the computer. After the accident the crane operator was told to leave his cell phone in his car, and he had to keep his headset on all the time to keep in touch with the signal people and to keep his cab clean. This was too much for him and he quit and found another job in two days. Doesn't management know how much stress they put on this crane operator expecting him to do the right thing?

Below: This accident happened when the operator was on a cell phone and operating in override mode on the computer. After the accident the crane operator was told to leave his cell phone in his car, and he had to keep his headset on all the time to keep in touch with the signal people and to keep his cab clean. This was too much for him and he quit and found another job in two days. Doesn't management know how much stress they put on this crane operator expecting him to do the right thing?

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