Hudson Yards Mobile Crane Assembling Tower Crane - GOR-171838--cE19

Mobile crane in foreground lifting and hosting metal frame sections of tower into place which will become a tower crane.

Tower Cranes and skyscraper under construction in Hudson Yards.

Tower cranes arrive at the construction site on 10 to 12 tractor-trailer rigs. The crew uses a mobile crane to assemble the jib and the machinery section, and places these horizontal members on a 40-foot mast that consists of two mast sections. The mobile crane then adds the counterweights.

The mast rises from this firm foundation. The mast is a large, triangulated lattice structure, typically 10 feet (3.2 meters) square. The triangulated structure gives the mast the strength to remain upright.

To rise to its maximum height, the crane grows itself one mast section at a time! The crew uses a top climber or climbing frame that fits between the slewing unit and the top of the mast.

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Contained in galleries: Working 10) Tower Rigging Cranes and Platforms, Architecture 01) - Exterior - Interior

Mobile crane in foreground lifting and hosting metal frame sections of tower into place which will become a tower crane.<br />
<br />
Tower Cranes and skyscraper under construction in Hudson Yards. <br />
<br />
Tower cranes arrive at the construction site on 10 to 12 tractor-trailer rigs. The crew uses a mobile crane to assemble the jib and the machinery section, and places these horizontal members on a 40-foot mast that consists of two mast sections. The mobile crane then adds the counterweights.<br />
<br />
The mast rises from this firm foundation. The mast is a large, triangulated lattice structure, typically 10 feet (3.2 meters) square. The triangulated structure gives the mast the strength to remain upright.<br />
<br />
To rise to its maximum height, the crane grows itself one mast section at a time! The crew uses a top climber or climbing frame that fits between the slewing unit and the top of the mast.