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On This Day | December 30

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2012
Suzhou IFS construction started

Suzhou International Financial Square is a supertall skyscraper in the Suzhou Industrial Park, Jiangsu, located to the east of Jinji Lake. It is a multi-purpose building which includes apartments, hotels and offices. It is also the tallest building in Suzhou.

2012
Line 6 (Beijing Subway) opened

Line 6 of the Beijing Subway is a rapid transit line in Beijing. The line runs from Jin'anqiao in Shijingshan District to Lucheng in Tongzhou District. It serves important residential areas such as Changying, Chaoqing, and Dingfuzhuang, in addition to important commercial and business areas such as Financial Street, Beijing CBD and the sub-administrative center in Tongzhou District. Like Line 7, Line 6 provides relief to the parallel Line 1, which is the second most used subway line in Beijing, after Line 10. Line 6 is the second longest subway line in Beijing. A complete journey from end to end takes about an hour and 25 minutes on a local train and express trains reducing end to end travel time by 7 minutes.

2008
Xiangshan Harbor Bridge construction started

The Xiangshan Harbor Bridge is a large cable-stayed bridge in Ningbo. The bridge carries 6 lanes of traffic between Xiangshan County and Yinzhou District of Ningbo, Zhejiang. The bridge, which was opened in 2012, is one of the largest cable-stayed bridges and one of the tallest in bridges in the world.

2000
Hangzhou Xiaoshan International Airport opened

Hangzhou Xiaoshan International Airport is the principal airport serving Hangzhou, a major city in the Yangtze River Delta region and the capital of Zhejiang Province, China. Hangzhou Xiaoshan International Airport has two terminals, Terminal A and Terminal B. The smaller Terminal A serves all international and regional flights while the larger Terminal B solely handles domestic traffic. Phase One of the airport occupies 7,260 acres (29.4 km2) of land. It has one runway which is 3,600 meters (11,811 ft 0 in) long and 45 meters (147 ft 8 in) wide. Phase Two of the airport expansion project began construction on 8 November 2007. The new runway is 3,400 meters (11,154 ft 10 in) long and 60 meters (196 ft 10 in) wide, which is capable of handling the Airbus A380.

1999
Fritz Leonhardt died

Fritz Leonhardt was a German structural engineer who made major contributions to 20th-century bridge engineering, especially in the development of cable-stayed bridges. His book Bridges: Aesthetics and Design is well known throughout the bridge engineering community.

1850
John Milne was born

John Milne was a British geologist and mining engineer who worked on a horizontal seismograph. 1880, Sir Alfred Ewing, Thomas Gray and John Milne, all British scientists working in Japan, began to study earthquakes following a very large tremor which struck the Yokohama area that year. They founded the Seismological Society of Japan (SSJ). The society funded the invention of seismographs to detect and measure the strength of earthquakes. Although all three men worked as a team on the invention and use of seismographs, John Milne is generally credited with the invention of the horizontal pendulum seismograph in 1880.

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