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
International Report [2013 Giants 300 Report]
Building Design+Construction's rankings of design and construction firms with the most revenue from international projects, as reported in the 2013 Giants 300 Report.
| Jul 19, 2013
Top BIM Construction Firms [2013 Giants 300 Report]
Turner, Clark Group, DPR top Building Design+Construction's 2013 ranking of the contractors and construction management firms with the most revenue from BIM-driven projects.
| Jul 19, 2013
Top BIM Engineering Firms [2013 Giants 300 Report]
Jacobs, URS, SAIC top Building Design+Construction's 2013 ranking of the engineering and engineering/architecture firms with the most revenue from BIM-driven projects.
| Jul 19, 2013
Top BIM Architecture Firms [2013 Giants 300 Report]
Gensler, HOK, HDR top Building Design+Construction's 2013 ranking of the architecture and architecture/engineering firms with the most revenue from BIM-driven projects.
| Jul 19, 2013
BIM 2.0: AEC firms share their vision for the great leap forward in BIM/VDC implementation [2013 Giants 300 Report]
We reached out to dozens of AEC firms that made our annual BIM Giants lists and asked one simple question: What does BIM 2.0 look like to you? Here’s what they had to offer.
| Jul 19, 2013
Reconstruction Sector Construction Firms [2013 Giants 300 Report]
Structure Tone, DPR, Gilbane top Building Design+Construction's 2013 ranking of the largest reconstruction contractor and construction management firms in the U.S.
| Jul 19, 2013
Reconstruction Sector Engineering Firms [2013 Giants 300 Report]
URS, STV, Wiss Janney Elstner top Building Design+Construction's 2013 ranking of the largest reconstruction engineering and engineering/architecture firms in the U.S.
| Jul 19, 2013
Reconstruction Sector Architecture Firms [2013 Giants 300 Report]
Stantec, HOK, HDR top Building Design+Construction's 2013 ranking of the largest reconstruction architecture and architecture/engineering firms in the U.S.
| Jul 19, 2013
Best in brick: 7 stunning building façades made with brick [slideshow]
The Brick Industry Association named the winners of its 2013 Brick in Architecture Awards. Here are seven winning projects that caught our eye.
| Jul 19, 2013
Construction lags other sectors, but momentum is building: JLL report
Although the construction recovery continues to lag other sectors as well as the overall U.S. economy, the industry is finally seeing a rebound. Commercial real estate giant Jones Lang LaSalle recently released its Summer 2013 Construction Highlights report, which found that there are some sectors (such as energy and high-tech) driving demand for construction, while a few major cities are starting to record increased levels of speculative office building developments.
