“One of the cranes was operating a vibratory hammer, and it had an issue, and it caused the crane to collapse across both sides of the old Tappan Zee Bridge,” said New York Gov. Andrew Cuomo ...

The agency said the the vibratory hammer crews were using to extract and pre-position a partially driven pile came loose unexpectedly and that the capacity of the crane was lower than required.

A crane collapsed on the Tappan Zee Bridge in New York on Tuesday, injuring two workers and three motorists — but not hitting any cars. The crane was working on the new, replacement bridge ...

You have to anticipate that failure is possible.” The Manitowoc crane was holding in place a vibratory hammer that drives piles into the Hudson River bottom. It was forced to operate in a narrow ...

"The crane holds up a vibratory hammer. The hammer weighs 121,000 pounds and it vibrates the pile into the mud," he said. "It's a routine task that we performed thousands of times out here." ...

PKF has relied on a crane-suspended vibratory hammer with leaders since being founded in 1969. Breaking with tradition on a megaproject by switching to a pile driving rig might seem risky ...

Using the tabs, the hammer lifts the foundation from where ... crews to manually position the foundation using one or more cranes and guiding cables. With Solo-Driver, the excavator and vibratory ...