Courtesy of Adrian Smith + Gordon Gill Architecture If all goes as planned, the Kingdom Tower, which will be the future world's tallest building, will contain the world's most lightweight elevator system. Related Links: KONE's High-Rise Elevator System Called Breakthrough Technology Designers Apply Lessons from World's Tallest Tower to Improve Future 'Megatallest' KONE Corp. has won the contract for the vertical transportation in Kingdom Tower, a multi-use building that is planned for a record height of 1 kilometer. For the tower, under way near Jeddah, KONE plans to install its lightweight hoisting system, called UltraRope, which it introduced last year.If
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.