Describir: Foundations of structures

           _    _     _____    _    _      _____    _____     ______  
  ____    | || | ||  /  ___|| | || | ||   / ___//  |  ___||  /_   _// 
 |    \\  | || | || | // __   | || | ||   \___ \\  | ||__    `-| |,-  
 | [] ||  | \\_/ || | \\_\ || | \\_/ ||   /    //  | ||__      | ||   
 |  __//   \____//   \____//   \____//   /____//   |_____||    |_||   
 |_|`-`     `---`     `---`     `---`   `-----`    `-----`     `-`'   
 `-`                                                                  
   ___    
  / _ \\  
 | / \ || 
 | \_/ || 
  \___//  
  `---`