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Steel it is very used mainly because is very affordable, versatile and durable. Despite being one of the most durable materials, steel is also good for environment because it is one of the very few materials which is continuously recyclable. Also, because it is made of partially recycled material and it is used in buildings which aim to last very long, the steel structures are pretended to be more cost-effective than other buildings which are made with other materials. All these good things lead to making steel structures very used nowadays. Steel structures have very advantages. Starting from the high strength that the steel provides to the uniformity of it since the steel doesn’t change its properties as appose to concrete. Elasticity is also an advantage and steel undergoes the Hooke’s Law very accurately. Also being very strong and flexible, steel framed structures are great in hurricane or cyclone prone regions. What is the most important thing in steel structures is that they can be prefabricated in large sections.
As everything that is present in our world, even steel structures have their own disadvantages. Being susceptible to corrosion when exposed to air, water and humidity, the structures must be painted periodically. Since it conduct heat, steel has very small resistance against the fire. Steel is a very strong solid and it cannot be mold in any direction and also it is very heavy so it is expensive to transport.
There are some famous steel structures that are very attractive for people for example: Eiffel tower, the Broooklyn Bridge, Burj Kalifa, The Empire State Building etc. All these mentioned buildings (except Brooklyn Bridge) are classified as skyscrapers. This means that structural steel is used for very high structures and this makes the steel one of the most stable and strong material for buildings. Most famous buildings in the world are steel structures. There are buildings that are known for their super heights, sculptures that connect nations, and bridges that span the widest rivers all around the world. Yet, we forget that the most of the world’s iconic structures would not have been possible without steel. Let start with Tapei 101 Tower in Taiwan. The known building is half a kilometer tall and it is proof of strength and longevity of steel. Tapei 101 Tower has 61 elevators and is considered as one of the Seven Wonders of Engineering by the Discovery Channel.
Also the Eiffel Tower is another well-known steel structure. It is the most recognized and the most famous landmark around the world. For some years it was the highest steel structure till the built of Chryslers Building. Since 1889(for the World’s Fair) till these days, this building is a very touristic place Shun Hing Square Tower in China is still the largest steel building holding the record for being constructed at a pace of four floors every 9 years.
The Beijing National Stadium known differently as The Bird’s Nest stadium. It took five year to complete this structure and there are used 42,000 tons of steel. It is known as the largest steel structure in all over the world. Steel structures aren’t only for high building but also for bridges. The most famous are The Brooklyn Bridge was the first steel –wire build in 1869. It took a decade to complete it and it is still at the top 10 list. Another famous bridge is The Sydney Harbour Bridge whose total steelwork weights
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