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

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