A lot less because, if the Eiffel Tower was built again with the current steel, it would be three or four times lighter. .
Average density of steel is 7,850kg/ m³, it could seem dense but, if we compare it with other materials such as iron or concrete, it is much lighter. What is more, the Millau viaduct, which has been the longest bridge in the world since 2005, i s made of 36 tons of steel.. If it had been made of concrete, it would have weighed 120,000 tons.
When we talked about resistance, we weren’t just talking about the capacity of bearing weight. Since steel is used in nuclear power plants, it is prepared to resist approximately 300 degrees and 200 atmospheres of pressure during 40 years. .
As you see, steel is a material with numerous benefits.
What do you think about these curious characteristics about steel?