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 19, 2012
Rental market pushing service, ‘community’
The Top 25 Giants 300 AEC firms in the Multifamily Sector keep four-legged tenants in mind.
| Jul 19, 2012
AEC firms ready to dive into public projects
But the size of the pool keeps shrinking for the Top 25 AEC firms in the Government Sector.
| Jul 19, 2012
BIM finally starting to pay off for AEC firms
In surveying Giants 300 firms about BIM, we went right for the jugular: Is BIM paying off—through cost savings, higher quality, or client satisfaction? Here’s what they told us.
| Jul 19, 2012
Contractors finally ‘moving off the bottom’
C and CM Agent + PM Giants 300 Firms also taking steps to improve project efficiency.
| Jul 19, 2012
The best states for a construction job
The top anticipated engineering and skilled labor shortages according to a survey of 2,223 construction industry professionals.
| Jul 19, 2012
Suffolk Construction launches subcontractor development series
Professional certificate program to provide core construction management skills to disadvantaged, minority, and women business enterprises.
| Jul 19, 2012
Construction begins on military centers to treat TBI and PTS
First two of several centers to be built in Fort Belvoir, Va. and Camp Lejeune, N.C.
| Jul 18, 2012
U.S. engineering firms set sail for foreign ports
Other E/EA Giants 300 firms are just dipping their toes into foreign waters, still looking for international business but choosing not to establish additional offices.
| Jul 18, 2012
Architecture giants spreading their wings
A/AE Giants 300 rankings reveal firms branching out globally, merging, adding services.
| Jul 18, 2012
Green expert Kats joins GreenWizard as an advisor
Kats' role is to help further expand GreenWizard’s impact in the sustainable construction industry.
