Terrasol 2026 Geotechnical Engineering Suite – Comprehensive Software Suite for Geotechnical Design and Structural Analysis

Terrasol develops and commercialises a suite of specialised geotechnical calculation software packages . The Terrasol 2026 suite includes the following products, each addressing a specific domain of geotechnical engineering:

Software Primary Application
Foxta V5 Foundation design (shallow, deep, and mixed foundations)
Talren V6 Slope stability analysis of earth structures
K-Rea V6 Retaining wall and diaphragm wall design
Slake Soil liquefaction analysis
Scage Structural calculations for geotechnical elements
Straticad AutoCAD-based geotechnical and structural drafting

Primary Users

The Terrasol 2026 geotechnical software suite is designed for geotechnical engineers, civil engineers, structural designers, and geologists working on infrastructure, foundations, and underground projects. It serves professionals who:

  • Perform slope stability analysis and earthwork design using advanced limit equilibrium methods

  • Design shallow, deep, and mixed foundations for buildings, bridges, and industrial structures

  • Analyze retaining walls and diaphragm walls for excavation support and soil retention

  • Evaluate soil liquefaction potential for seismic risk assessment

  • Carry out structural calculations for geotechnical elements and soil-structure interaction

The software suite is developed and marketed by Terrasol (Groupe Setec) , a French geotechnical engineering consultancy with over 105 employees—including 90 engineers and geotechnical experts . The company, led by Fahd Cuira (DG) and Hervé Le Bissonnais (DGD), acts as a reference player in all areas of geotechnical engineering in France and internationally

 

Key Features & Capabilities

Foxta V5 – Foundation Design

Foxta is Terrasol’s flagship foundation design software, with version 5 being a major release introduced in mid-2026 . Key features include:

  • 3D Semi-Deep Foundation Calculation: Advanced 3D modelling and analysis of semi-deep foundations 

  • Advanced p-y Laws: Enhanced p-y curves for deep foundation calculations, improving soil-structure interaction modelling 

  • Stability Diagrams: Dedicated stability diagrams for footings on rigid inclusions 

  • Explicit Compressed Surface Calculation: 3D calculation of the compressed surface area of rafts under 3D loading 

  • Mixed Foundations Module: New dedicated module for mixed foundation design 

  • Seismic Foundation Module: New dedicated module for foundation design under seismic conditions 

Talren V6 – Slope Stability

Talren is Terrasol’s flagship slope stability software for analysing the stability of earth structures. Version 6 includes:

  • Limit Equilibrium Methods: Advanced limit equilibrium analysis for slope stability

  • Stratified Soil Modelling: Full integration of complex soil stratigraphy

  • Reinforcement Analysis: Modelling of soil reinforcement elements

K-Rea V6 – Retaining Structures

K-Rea is dedicated to the design and analysis of retaining screens and diaphragm walls. Version 6 provides:

  • Wall Analysis: Comprehensive analysis of retaining walls under various loading conditions

  • Excavation Support: Design tools for temporary and permanent excavation support systems

  • Soil-Structure Interaction: Advanced modelling of interaction between soil and retaining elements

Slake – Soil Liquefaction

Slake is a specialised tool for evaluating soil liquefaction potential, essential for seismic risk assessment in earthquake-prone regions.

Scage – Structural Calculations

Scage is a structural calculation software designed specifically for geotechnical-related structural elements.

Straticad – Geotechnical Drafting

Straticad is a CAD-based drafting tool designed for geotechnical and structural applications. Version 3.14 is compatible with all major CAD platforms:

  • AutoCAD® versions 2012 to 2026 

  • BricsCAD Pro® versions 2012 to 2026 

  • ZWCAD+ Pro® versions 2012 to 2026 

  • GstarCAD Std® versions 2017 to 2026 

What’s New in Terrasol 2026

The 2026 update introduces significant enhancements across the software suite, with Foxta V5 being the highlight:

Foxta V5 (Major Release – Mid-2026)

Version 5 of Foxta represents a major leap forward in foundation design capabilities :

  • Semi-Deep Foundations in 3D: New 3D modelling capability for semi-deep foundations

  • Advanced p-y Laws: Enhanced p-y laws for more accurate deep foundation analysis

  • Stability Diagrams: New stability diagram functionality for footings on rigid inclusions

  • Explicit Compressed Surface: 3D calculation of the compressed surface area under rafts

  • Mixed Foundations Module: Dedicated module for combined foundation systems

  • Seismic Module: New module for foundations under seismic conditions