Describir: The reinforcement of slabs in accordance with a pre-determined field of moments

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