"KONE ULTRAROPE" A CABLE THAT WILL RESHAPE SKYLINES

Of all the physical constraints that dictate our cityscapes, perhaps the most counterintuitive is the elevator cable. Very long standard cables become too heavy to haul, a limitation that restricts the height of buildings. But UltraRope, a new cable with a carbon-fiber core and high-friction coating, could double elevator heights to 3,280 feet. UltraRope weighs 80 percent less than a standard cable, with no loss in strength, and designers are already using it to build higher than ever; with UltraRope, the elevator shafts in the new Kingdom Tower in Jeddah, Saudi Arabia, will reach a record 2,165 feet. The lighter material also helps new buildings reduce energy consumption by up to 45 percent. KONE