Why was the Empire State Building made of steel?

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Why was the Empire State Building made of steel?


Strength-Steel is very strong
Flexibility-Ability to flex in the wind
Cost-Inexpensive and fast to build; prefab construction Concrete, a possible alternative, has less compressive strength than steel.
The bottom support structure of the empire state building would consist of a large percentage of solid concrete simply to support the weight of the building.
It is made of steel girders and also reinforced concrete is used at the bottom.
Another point is concrete has high compressive strength and low tensile strength.
Learn more at
www.onlinecivil.co.cc
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