PLPAK is a series of

3 main packages and 4 free tools. The packages are the [ Single-Floor (Basic) Package ], the [ Advanced Single-Floor (Foundation) Package ], and the [ Multiple-Floor (Fixed Base) Package ]. The free tools are the [ Post-Tension Tool ], the [ Design Tool ], the [ 3D Viewer (OpenGL) Tool ], and the [ Dynamic Tool ]. You can combine the main packages and the free tools to fit your needs. For more information, please refer to [ What to buy ].

Please note that the PLPAK is based on the boundary element solution for slabs and the finite element solution for vertical elements which makes the PLPAK a unique software in gaining the advantages of both methods.


The 3 Main Packages


This package is used to model and carry out structural analysis of single floor slab over columns, walls, beams and cores. Also, it can model footing over continuous area Winkler springs.

To check when to buy this package, please refer to [ What to buy ].


This package inherits single-floor package features plus advanced modelling and analysis features of soil and piles. Soil can be modelled as elastic half space. Also, the pile-pile interaction or the pile-soil-pile interaction can be taken into consideration.

To check when to buy this package, please refer to [ What to buy ].


This package inherits single-floor package features plus analyzing tall building over fixed base.
Note : Autodesk Revit is required. (The building is first modelled using Autodesk Revit as commonly carried out by engineers, and then analyzed using the Multiple-Floor Package; hence designed using the Design tool or the Post-Tension tool. Finally, back to Autodesk Revit for viewing reinforcement details, BOQs, etc.)

To check when to buy this package, please refer to [ What to buy ].


The 4 Free Tools


This tool is used to analyze and design post-tensioned slabs. It could be linked with any package. Cables could be drawn in PLPAK GUI or imported from cad file. Also, cables could be exported to Autodesk Revit.


This tool is used to design based on ACI, EN and ECP codes. Check punching for irregular columns including warping effects. Check deflection for irregular spans. Export calculation sheets to excel and detailing to CAD or Autodesk Revit.


This tool is used to visualize single-floor, multiple-floor or vertical elements results in 3D view. Also, it is linked to Design tool for the design of vertical elements.


This tool is used to analyze tall buildings in time history or free vibration.
Note : Autodesk Revit is required