Describir: La construction rationnelle d'aires de couchage dans les étables et porcheries.

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