ADAPT-SOG : Post-Tensioned Slab-on-Grade Foundation 3D FEM Design Software

Product Overview

ADAPT-SOG is a complete three-dimensional (3D) Finite Element (FEM) Analysis and Design tool for the analysis and design of post-tensioned foundations slabs on expansive soils.

ADAPT-SOG produces effective, accurate designs with confidence. Other design approaches for post-tension slab-on-grade foundations rely on simplified and approximate methods which largely lead to overly conservative designs. ADAPT-SOG differs by providing an accurate 3D Finite Element Analysis. Unparalleled modeling flexibility allows you to model any foundation configuration, including grade beams, piers, and ribs, as well as plan irregularities, steps in the slab, and varying soil properties. Gravity and Lateral loading can be applied at any location on the slab. Simple modeling tools support the layout of post-tensioning tendons as they will be constructed. The software analyzes the slab and automatically checks allowable stress limits at critical locations. Engineers and lawyers count on ADAPT-SOG to ensure investigative evaluation reports are professional and clear, with sophisticated results output, including deflection contours, graphic displays of soil pressures and concrete stresses. ADAPT-SOG automatically generates post-tension tendon layout drawings for use in construction documents including tendon elongations and drapes.

ADAPT-SOG enables the designer to consistently provide efficient designs in challenging sites with the confidence that the slabs will perform significantly better than designs from other approaches, reducing risk in potential litigation.

  • Applications
  • Residential
  • Light industrial
  • Tennis courts
  • Super flat slabs for warehouses


  • Generates a true three-dimensional solid model of the entire mat foundation and grade beams using its in-built Builder-Modeler and
  • DWG/DXF files, or
  • By using ADAPT's unique and easy-to-use Component Technology to assemble the structure
  • Handles non-rectangular and irregular and complex foundation plans
  • Treats multiple foundation soil properties below the same foundation slab
  • Models steps above and below the mat slab and grade beams
  • Place tendons in beam or slab, straight or profiled in any direction
  • Apply loads of any configuration, anywhere on the slab in addition to the perimeter loading
  • View and examine the solid model to verify the accuracy of the structure's representation
  • Performs a detailed finite element analysis of the entire foundation system and its supporting structure using automatic adaptive meshing, flat shell and frame elements
  • Performs code check and reports the location and amount and length of reinforcement needed
  • Generates highly professional graphical and tabular reports, including plans for tendon layout with elongation
  • Click here for graphic of ADAPT-SOG design process (768k pdf)...
  • Click here to download ADAPT-SOG tutorial (1Mb pdf)...
  • Click here to download ADAPT-SOG sample calculation (270kb pdf)...



    ADAPT SOG Website

Twoplus Soft Co.,Ltd.
42 Twoplus Park, Soi Ladprao 8,
Ladprao Road, Chomphon, 
Chatuchak, Bangkok
10900 Thailand

   02 513 7495, 02 513 7496

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