Supertall buildings call for creative vertical transportation strategies. Hitachi Ltd. and its Hitachi Elevator Co. Ltd. division have annouced that they will build and install 95 elevators—including two that the manufacturer labels as the "world's fastest"—for the Kohn Pedersen Fox-designed Guangzhou CTF Finance Center, which will be 530 meters (1,738 feet) tall.
The two super-speedy units are designed to ascend at rates of up to 1,200 meters per minute, or about 45 mph, with a rated descent speed of 600 meters per minute. The contract also calls for 23 double-deck models running at up to 540 meters per minute, 13 ultra-high-speed units running at up to 600 meters per minute, and an assortment of medium- and low-speed elevators.)
The fastest elevators will travel a shaft height of 440 meters (from the first to the 95th floor) in about 43 seconds. The design includes a permanent magnet synchronous motor, a compact traction machine (achieved through reducing rope diameters, presumably with the aid of advanced materials), high-capacity inverters, braking materials with high heat resistance (withstanding temperatures exceeding 550°F), and a governor that is designed to control various rated speeds during ascent and descent. Active guide rollers will detect warping in the guide rails and lateral vibration caused by wind pressure, helping to ensure a smoother ride. Hitachi has also devised proprietary air pressure adjustment technology intended to help prevent the common sensation of ear blockage caused by pressure changes.
The upscale mixed-use skyscraper will encompass office, hotel, and residential space, and will be the tallest structure in Guangzhou. A 2016 completion date is planned.
Hitachi's experience with vertical transport for tall buildings includes a unit installed in Tokyo's Kasumigaseki Building in 1968—the world's fastest elevator at the time, at 300 meters per minute. The firm operates a 213-meter-tall research tower specifically for elevator development and testing.
For more, see Hitachi's original release.
Related Stories
| Jul 22, 2013
Top Office Sector Construction Firms [2013 Giants 300 Report]
Turner, Structure Tone, PCL top Building Design+Construction's 2013 ranking of the largest office sector contractors and construction management firms in the U.S.
| Jul 22, 2013
Top Office Sector Engineering Firms [2013 Giants 300 Report]
AECOM, Parsons Brinckerhoff, Jacobs top Building Design+Construction's 2013 ranking of the largest office sector engineering and engineering/architecture firms in the U.S.
| Jul 22, 2013
Top Office Sector Architecture Firms [2013 Giants 300 Report]
Gensler, HOK, Perkins+Will top Building Design+Construction's 2013 ranking of the largest office sector architecture and architecture/engineering firms in the U.S.
| Jul 22, 2013
Market gains encourage better workplace design [2013 Giants 300 Report]
The commercial office sector is finally heating up, led by corporate headquarter and medical office building projects.
| Jul 22, 2013
Top Hotel Construction Firms [2013 Giants 300 Report]
Manhattan Construction, Structure Tone, Lend Lease top Building Design+Construction's 2013 ranking of the largest hotel contractors and construction management firms in the U.S.
| Jul 22, 2013
Top Hotel Architecture Firms [2013 Giants 300 Report]
Gensler, WATG, HKS top Building Design+Construction's 2013 ranking of the largest hotel architecture and architecture/engineering firms in the U.S.
| Jul 22, 2013
Hotel business continues to shine [2013 Giants 300 Report]
Despite some economic stressors, hotel operating fundamentals are poised to remain strong in 2013.
| Jul 22, 2013
Transportation Facility Report [2013 Giants 300 Report]
Building Design+Construction's rankings of design and construction firms with the most revenue from airport terminals and other transportation-related facilities, as reported in the 2013 Giants 300 Report.
| Jul 22, 2013
Convention Center Report [2013 Giants 300 Report]
Building Design+Construction's rankings of design and construction firms with the most revenue from convention center projects, as reported in the 2013 Giants 300 Report.
| Jul 22, 2013
Cultural Facility Report [2013 Giants 300 Report]
Building Design+Construction's rankings of design and construction firms with the most revenue from cultural facility projects, as reported in the 2013 Giants 300 Report.
