Photo courtesy Joe Volpe Crews working atop One57 use a mini-crane to assemble a stiff-leg derrick. YouTube Maeda mini-crane works on Baku Flame Towers Project. Related Links: Dangling Crane Was Act of God, Engineers Say Spider Cranes Crawl Into Tight Spaces Bigger is not always better. Such is the case of a small lifting machine, called a mini-crane, that has been advancing rigging and hoisting work needed to replace a large tower crane that partially collapsed in Midtown Manhattan last October during Superstorm Sandy.The unusual work requires crews to cut down, remove and then replace a crane-jib superstructure that is
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.