Describir: Elements of reinforced concrete

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