Describir: Continuous frames of reinforced concrete

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