Describir: The theory and practice of reinforced concrete.

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