A 250 tonne five axle All Terrain crane overturned in Everett, on the north side of Seattle, Washington yesterday, while working on a construction project at the town's Mall.
The incident appears to be related to one of the front outriggers, which either punched through the ground or was not extended, however, the other outriggers were set on large steel pads, so one imagines they all were. The crane, a new looking Grove GMK 5250XL - owned by local company Ford Crane, tipped forward and dumped its counterweight which seems to have travelled down the deck to the retracted outrigger. What caused the initial overturn is not clear at this point.
The impact of the boom on the building set off the sprinkler system, which automatically alerted the local fire department which arrived soon afterwords. Two men working inside the building were injured, one was treated at the scene, while the other was taken to hospital with non-life threatening injuries. The crane operator escaped injury.
The Washington State Department of Labor and Industry is investigating the incident. photos courtesey of Everett Fire Department
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