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
| Feb 5, 2013
8 eye-popping wood building projects
From 100-foot roof spans to novel reclaimed wood installations, the winners of the 2013 National Wood Design Awards push the envelope in wood design.
| Feb 3, 2013
Electronic surveying improves accuracy on BIM-driven hospital project
A mechanical contractor combines an electronic surveying tool with a BIM model to make significant productivity gains in a large-scale hospital project.
| Jan 30, 2013
Design Firm Little Expands Durham Interiors Studio
Both Benner and Byers have expertise in market sectors such as corporate, retail, hospitality, healthcare, research /technology, critical facilities, civic and education.
| Jan 22, 2013
Midwestern Construction Company Acquires Local Architecture Firm
St. Charles, Ill.-based design/build and construction firm acquires architecture firm.
| Jan 17, 2013
Thornton Tomasetti Founding Principal Thornton receives ASCE Lifetime Achievement Award
The OPAL Lifetime Achievement Award is given to civil engineers who “represent a model of achievement to which future generations of engineers aspire to match or exceed.”
| Jan 16, 2013
2013 40 Under 40 application process now open
Building Design+Construction's 40 Under 40 is open to AEC professionals from around the globe.
