Posted Jun 14, 2022, 7:56 PM
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New Yorker for life
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Join Date: Jul 2001
Location: Borough of Jersey
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https://www.americancranesandtranspo...021385.article
Favelle luffers at work on new NYC “landmark”
By Hannah Sundermeyer
13 June 2022
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Rising up from 270 Park Avenue in Midtown Manhattan is the JPMorgan Chase headquarters building. Renderings for the 60-story skyscraper show a gorgeous building with many glamorous amenities. It will be New York City’s largest all-electric tower with net zero operational emissions.
“It is a very high profile project,” said Ritchie Bhaskaranand, vice president/construction manager of NYC Constructors (NYCC).
In bidding the crane work, Bhaskaranand said they needed to consider the steel members, weights and delivery options, plus the building’s large footprint.
“The sheer footprint at ground level is approximately 200 by 400 square feet,” he said. “We looked at all the essentials and determined that four tower cranes would be needed to handle all the lifting for the structural steel tower above the third floor.”
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The four cranes chosen for the job are Favelle Favco M900F-ST H32 models. NYCC purchased two of the cranes from Lomma Cranes and is renting the other two cranes from Lomma Cranes.
“We like Favco cranes because they fit our construction model, plus we have a great relationships with the dealer and the manufacturer,” said Bhaskaranand. “We’ve used Favcos for a long time. We also have the 760 and 440 models in our fleet. I guess you could say we live and breathe Favcos.”
The four cranes at the Park Avenue job are run on diesel, which gives them more power and is a more efficient use of the cranes’ resources.
“We generally choose diesel over electric,” he said. “With most jobsites, you don’t have the power hookup, so to run an electric crane you have to bring in a diesel generator anyway. That’s a very inefficient way to run an electric crane.”
The four cranes were erected in October 2021 thru January 2022. The structural steel part of the project is expected to be completed by the end of 2023.
“Contractually, it should be done by the first quarter of ‘24,” he said.
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Currently, the cranes are working on the 11 mezzanine level of the building setting steel on one of six truss floors.
“The building is at 25 percent of its overall height,” Bhaskaranand said. “The weights of what we are lifting vary. We look at efficiencies to capitalize on the lifting capacity of the cranes. They are working close to each other, so there are times they make critical or tandem picks. We try to bring up the steel in larger sections. It’s more efficient than bringing up in smaller sections.”
NYC Constructors uses a propriety internal jumping system they designed so that the cranes can jump and stay close to the working floor level.
“When tower cranes are free standing and coming up through the building it slows down construction,” Bhaskaranand said. “Large sections of floors cannot be finished. Our system keeps the crane above the turnover floor, so those levels are always 100 percent ready for the concrete per the building design.”
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The M900F-ST H32 models are a new series of luffers that Favelle Favco designed with a reduced tail swing. At a 50-foot boom radius, these cranes will lift 141,000 pounds on two falls of rope or 70,100 pounds at a 110-foot radius on a single fall of rope. With the maximum 241 feet boom, they will lift 87,000 pounds at 40 feet and 16,500 pounds at a radius of 234.6 feet on two falls.
….. As the building rises, the footprint will get more narrow.
“Our plan is to lose two cranes after the 40th floor is erected and then a third after the 55th floor is erected, Bhaskaranand said. “When the building is topped out a derrick will be brought in to take down the last crane.”
For the most part, he said the job has run smoothly. On any project in New York City, there are logistical challenges to work out with transportation officials, transit authorities, DOB and other entities.
“There will always be issues to work through,” he said. “Sometimes we have a problem getting approval quick enough. We just work around these issues to keep the job moving.”
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Last edited by NYguy; Jun 14, 2022 at 8:35 PM.
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