Crews are installing dunnage for a new crane that will lift the pieces of the 408-ft-tall spire atop One World Trade Center in lower Manhattan. The primary steel structure of the future 1,776-ft-tall office building is topped out at 1,368 ft—the height of the taller of the original twin 110-story towers. The erection of the structural-steel spire will rank the skyscraper as the tallest building in the Western Hemisphere when it is completed in early 2014.