World's Greatest Steel Structures

1. Chaotianmen Bridge

The continuous steel truss arch bridge with tie girders has a height of 142 m (466 ft) from middle supports to arch top, main span of 552 m (1,811 ft) and a total length of 1,741 m (5,712 ft). It carries 6 lanes in two ways and a pedestrian lane on each side on the upper deck, and dual light rails in the middle and 2 traffic lanes on each side on the lower deck.

2. Beijing National Stadium

 

Located at the Olympic Green, the stadium cost US$428 million. Which was built in a short span of 5 years for The olympic 2008. With a huge capacity of 91,000. Steel used for the whole structure is around 1,10,000 tons which was completely made in china.Twenty-four trussed columns encase the inner bowl, each one weighing 1,000 tons.

3. Eiffel Tower

The tower is 324 metres (1,063 ft) tall, about the same height as an 81-storey building. Its base is square, 125 metres (410 ft) on a side. During its construction, the Eiffel Tower surpassed the Washington Monument to assume the title of the tallest man-made structure in the world.
Steel used for Eiffel tower is around 10,100 tons.

4. Walt Disney Concert Hall, Los Angeles, USA

Most of the buildings’ exterior is designed in stainless steel with a matte finish. Still, some parts of the building had highly-polished mirror-like panels that caused problems for the nearby buildings. The sun reflections overheated the surface of the nearby buildings, causing issues to the air conditioning systems. The panels were eventually dulled without major changes in the original design.

5. Sydney Harbour Bridge

This through arch bridge in Sydney carries rail, car, bike and pedestrian traffic from Sydney Central Business District to the North Shore and backward for 1,149 m (3,770 feet). The locals nicknamed the bridge “The Coat Hanger”, due to its main piece of design, the arch.

The Sydney Harbor Bridge currently holds two world records: it is the widest long-span bridge and the tallest steel arch bridge, being 130 meters/440 feet above the water level. The amazing arch spans over 503 meters (1,650 feet) and on hot days the structure can expand in height with more than 18 cm (7.1 inches). The bridge was inaugurated in March 1932 and along with the Sydney Opera House is now one of Australia’s worldwide known landmarks.

6. Willis Tower, Chicago, USA

Willis Tower, formerly known as the Sears Tower, is the tallest building in United States. Right after its completion, from 1974 to 1998, it was also the tallest building in the world; today it still holds a remaining record – the sixth tallest freestanding structure on the planet.
The building was designed by Bruce Graham and Fazlur Khan, as nine square steel tubes, clustered in a 3×3 matrix. The nine tubes would rise together up to the 50th floor, when the northwest and southeast tubes end; at the 67th floor the northeast and southwest tubes end; at the 90th floor the north, east, and south tubes end and the remaining west and center tube continue up to the 108th floor.
The whole module structure is based on huge steel columns that support the whole frame. The black belts on the tower represent louvers that allow ventilation for the integrated system and also serve as the tower’s belt trusses. Willis Tower has 108 stories and it is 442 meters (1,451 feet) high and continues to be one of the greatest corporate buildings in the world.

7. The Empire State Building

Built in 1931 with its stylish art deco tower, the Empire State Building is a 103 story skyscraper that stood as the tallest building in the world for over 40 years. It took over from the Chrysler Building and held that distinction until 1973 when it was overtaken by the Sears (now Willis) Tower in Chicago. The steel frame alone weighs 57,000 tons. Amazingly for its time, it only took 13 months to build.

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