By Laurie Goldman and Sander Goldman
Posted 05.06.2005 at 6:00 pm 0 Comments
Few people on the floors above where the planes hit the twin towers survived, in part because the stairs, sheathed only in drywall, were severely damaged. In the Freedom Tower, stairs will be housed in concrete enclosures within the central core, creating what SOM architect Carl Galioto calls "a core within the core." The stairs will be pressurized to push out smoke.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.