Describir: Composite construction in steel and concrete :

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