Describir: Design of steel structures :

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   /   ||  | / \ ||  |    \\  | || | || | |/\| ||  | / \ || / //---`' 
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   \__ ||   \___//   |  __//   \____//  |_// \_||   \___//   \_____|| 
    -|_||   `---`    |_|`-`     `---`   `-`   `-`   `---`     `----`  
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