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
| Nov 22, 2011
New Green Matters Conference examines emerging issues in concrete and sustainability
High-interest topics will be covered in technical seminars, including infrared reflective coatings for heat island mitigation, innovative uses of concrete to provide cooling and stormwater management, environmental benefits of polished concrete, and advancements in functional resilience of architectural concrete.
| Nov 22, 2011
Suffolk Construction selected as contractor for Boston luxury residential tower
Project team breaks ground on 488,000-sf building that will feature world-class amenities.
| Nov 22, 2011
Jones Lang LaSalle completes construction of two new stores in Manhattan
Firm creates new global design standard serving as project manager for Uniglo’s 89,000-sf flagship location and, 64,000-sf store.
| Nov 21, 2011
Mortenson and enXco partnership to build its 19th wind project
The 8,500 acres project will generate140 megawatts of wind power – enough energy to power approximately 39,000 homes.
| Nov 21, 2011
FDH Engineering acquires Energy Solutions
All ESI employees have been merged into FDH’s staff at its St. Louis office.
| Nov 18, 2011
Centre for Interactive Research on Sustainability opens
Designed to exceed LEED Platinum, the Centre for Interactive Research on Sustainability (CIRS) is one of the most innovative and high performance buildings in North America today, demonstrating leading-edge green building design products, technologies, and systems.
| Nov 17, 2011
SmithGroup changes name to SmithGroupJJR
SmithGroup and JJR join brands to become a single, multi-disciplinary company.
| Nov 17, 2011
Campus-wide energy-efficiency program aims to deliver $3.5 million in energy and operational savings
Merced College and Honeywell will use the school’s energy usage statistics to develop a course curriculum on sustainability, and raise awareness among students of the positive impact conservation practices contribute to the community.
