LPILE — Development History

Selected notable improvements from major releases are highlighted on this page.

LPILE 2018

Incorporate new features including

LPILE 2016

Release cycle for LPILE 2016 extended from year 2016 through 2017. Incorporate new features including

LPILE 2015

Incorporate new features including

LPILE 2013

Release cycle for LPILE 2016 extended from year 2016 through 2017.

LPILE 2012

Starting with LPILE 2012, a new approach for indicating the version and release number of the LPILE that includes three digits. First set of numbers is the calendar year of the release of the program, second set is the fdata file format version, and the third set of numbers indicate the release version of the program since the data file format number was introduced.

LPILE 6 (2010)

Release cycle for LPILE 6 extended from year 2011 through 2012. Highlights from this version include

LPILE Plus 5 (2004)

LPILE Plus 4/4M (2000)

LPILE Plus 3M (1998)

LPILE Plus 3 (1997)

LPILE Plus 2 (1995)

LPILE Plus 1 (1994)

LPILE Plus 1 for MS-DOS (1993)

LPILE 4.0 for MS-DOS (1993)

LPILE 4.0 for MS-DOS (1989)

  • Provides major improvements in user experience and ease-of-use by providing input data editor featuring pull-down menus, input tables, and on-screen help commands.
  • Color graphics for CGA, EGA, and CGA displays added to the output graphics post-processor program.
  • Provides new p-y criteria for vuggy limestone/rock
  • Provides new options for modifying internally-generated p-y curves for group action effects
  • Allows the pile head to be positioned either above or below ground surface
  • LPILE 2.0 for MS-DOS (1987)

    With the introduction of improved graphics hardware for personal compuers such as color graphics mmonitors and an improved processor on IBM AT-class computers, the features for graphical display of computed pile deflection, bending m oment, shear and soil resistance became desirable for engineering software. LPILE 2.0 was introduced in 1987 with a commpanion graphics program. Improvements were also made on the main program and input data editor

    LPILE 1.0 for MS-DOS (1986)

    When the IBM XT personal computer was introduced in 1984, Dr. Lymon C. Reese, the founder of Ensoft, Inc., foresaw the benfits and improvements in analysis and design of pile foundations using improved computer software. The development of LPILE for its first commercial distribution was begun in 1985 and completed in 1986. The general theory and methodology of LPILE 1.0 was similar in features to COM624, which was run on large mainframe computers. LPILE was completely rewritten using a new solver and features were provided for interactive input. LPILE was developed for analyzing single piles and drilled shafts under lateral loading. This version of LPILE was compiled using the IBM Fortran compiler to run on the IBM XT personal computer. LPILE Version 1.0 provided the following key features