The project involved hoisting a 116.5 ton (105.6 t) gas “scrubber,” which was 109 ft. (33 m) long and 19.5 ft. (5.9 m) in diameter, from a barge docked on the Detroit River to the dock on Zug Island.

JJ Curran, a Detroit, Michigan-based crane rental and lifting service, recently was called upon to help with a massive lifting job at the city docks. The project involved hoisting a 116.5 ton (105.6 t) gas "scrubber," which was 109 ft. (33 m) long and 19.5 ft. (5.9 m) in diameter, from a barge docked on the Detroit River to the dock on Zug Island. Once landed on Zug Island, it would be transported to its final destination at the steel mill. The scrubber will be set vertically in position at the mill during a plant-wide shutdown this coming spring.

Knowing the details of the lift called for machines with versatility and heavy lifting capacities, JJ Curran deployed its Grove GMK6300L and GMK6400 all-terrain cranes to ensure the job got done with ease. Both machines were purchased from the Riverdale, Illinois-based Manitowoc dealer Walter Payton Power Equipment (WPPE).

"The weight of the scrubber and 75 ft. distance from the center of the barge to the landing spot were definitely the biggest challenges," said Chad McComas, crane operator and field engineer at JJ Curran. "An additional challenge was the 2 mph current of the Detroit River. We had to make the lift off the barge that was in the river. The GMK6400 needed to handle 54 tons at 60 ft. radius, and the GMK6300L had to hoist the 49-ton scrubber at a 55 ft. radius. The two GMKs handled the task flawlessly."

For more information, visit www.manitowoc.com­.

This story also appears on Crane Equipment Guide.

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