If the World Trade Center attack had occurred at a busier time, it would have taken occupants four hours to get down the stairs–hours they didn’t have. The solution: emergency elevators. Surprising? They exist in the U.S. only in Las Vegas’s Stratosphere Tower, but experts expect they’ll eventually be a skyscraper requirement. To make elevators fire-safe, shafts are sheathed in concrete, studded with heat sensors, and pressurized to keep out smoke. Cars have heat- and water-resistant electronics. Not in the plans: The Freedom Tower won’t have truly fire-safe elevators, but there will be lifts for rescuers and disabled occupants to use in an emergency.
Take the elevator?!
Fire protection and sensors to gird lifts so that people can exit fast