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

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Text this: Elasto-plastic analysis method for vertically loaded pile considering pile-soil slip