June 10th, 2017

OptumG2 is a comprehensive finite element program for geotechnical stability and deformation analysis

Optum’s modern graphical user interface ensures an intuitive and efficient workflow. The computational core builds on state-of-the-art numerical algorithms that lead to an unprecedented efficiency and robustness – independent of the complexity of the model.

Compute upper and lower bounds on bearing capacities or safety factors to obtain a rigorous and accurate estimate of the exact solution.
 The OptumG2 graphical user interface is based on modern concepts of human-computer interaction ensuring an efficient and intuitive workflow.
 OptumG2 contains both simple and advanced constitutive models for soil and rock including Mohr-Coulomb, Hoek-Brown, Modified Cam Clay, and EMC.


Slope stability analysis using OptumG2


Interesting features about OptumG2


Limit Analysis

Limit analysis provides an efficient means of assessing the bearing capacity of geostructures directly without the need for exhaustive load-displacement analysis.


Mesh Adaptivity

All analyses come with the option of using automatic adaptive mesh refinement. This allows for a high degree of accuracy at a moderate computational effort.


Strength Reduction

Strength reduction analysis involves a reduction of the material parameters until failure occurs. The resulting reduction factor may be interpreted as the factor of safety.


Initial Stress Analysis

Geostatic stresses are determined in an efficient and rigorous manner using this analysis which is unique to OptumG2.


Staged Construction

Staged construction comes with a high degree of flexibility and any changes to material, geometry, etc, between stages are specified in an ad hoc manner.


Elastoplastic Analysis

Elastoplastic analysis can be carried out in an efficient and robust manner using the dedicated algorithms implemented in OptumG2.


Design Approaches

OptumG2 includes user-friendly functionality for automatic application of partial factors according to the various Design Approaches of Eurocode 7.


Accurate Soil and Rock Models

OptumG2 comes with both simple and advanced constitutive models for soil and rock including Mohr-Coulomb, Hoek-Brown, Modified Cam Clay, and EMC.



Bearing capacity of shallow foundations using OptumG2



OptumG3 is packed with all the great features you know from OptumG2, but now in 3D – making your design-work easier than ever.

OptumG3 is the first ever commercial 3D geotechnical Finite Element Limit Analysis program.  The program comes as a full packages including solid modelling, automatic adaptive re-meshing and unseen speed and robustness. For the first time ever geotechnical engineers can fast and safely calculate bearing capacities for 3D structures. With a unique and patent pending finite element technology user’s will be able to calculate bearing capacities in few minutes on a standard laptop PC. 


OptumG3 is packed full of features! Here you see few of them:

  • Efficient and robust algorithms
  • Command line version
  • Cad import & export
  • Adaptive mesh refinement
  • Upper and Lower bounds


Introduction to OptumG3:




CIRCULAR FOUNDATION      Duration: 21:49


SHALLOW FOUNDATION         Duration: 11:18


SKIRTED FOUNDATION      Duration: 18:11




Optum software is easy to learn – even by people with little or none Finite Element experience

Optum can save you and your company hours of work – keep focus on design not numerics

Optum solves your problem fast and reliable – for any geometry regardless of complexity.


Learn more about Optum software!


December 8th, 2019

Software dedicated to parametric modelling of 2D Tunnels

C-TUNNEL is a professional software dedicated to the finite element analysis of 2D tunnels. Based on the kernel CESAR, it has been developed to provide tunnel engineers quick pre-design reports. Integrating parametric studies, it helps to the understanding of the tunnel project boundaries.

Why to Choose C-Tunnel?

  • Most efficient tool for tunnel engineer 
  • Quick & reliable  FEA model generation ( using CESAR)
  • Reliable results for the design
  • Parametric studies
  • Automatic report
  • Can be exported to CESAR 2D for any complex modifications. 
  • From modelling to design to reports generation in few minutes!!!

C-Tunnel Presentation



June 9th, 2017

PLAXIS 2D is The most used software for geotech applications


PLAXIS 2D is a powerful and user friendly finite element package intended for two-dimensional analysis of deformation and stability in geotechnical engineering and rock mechanics. PLAXIS is used worldwide by top engineering companies and institutions in the civil and geotechnical engineering industry. Applications range from excavations, embankment and foundations to tunnelling, mining and reservoir geomechanics.

One package, many applications

PLAXIS is equipped with a broad range of advanced features to model a diverse range of geotechnical problems, all from within a single integrated software package.

The most efficient tool for geotechnical modelling

PLAXIS uses predefined structural elements and loading types in a CAD-like environment. This empowers the user with fast and efficient model creation, allowing more time to interpret the results.


PLAXIS 2D Showreel: Dams & Embankments

PLAXIS 3D is the most easy and robust tool  to model complex geometry of soil and structures.

PLAXIS 3D is a powerful and user friendly finite element package intended for three-dimensional analysis of deformation and stability in geotechnical engineering and rock mechanics. PLAXIS is used worldwide by top engineering companies and institutions in the civil and geotechnical engineering industry. Applications range from excavations, embankments and foundations to tunnelling, mining and reservoir geomechanics.

The most advanced tool on the market

PLAXIS 3D has advanced features to tackle modelling challenges in the most complex geotechnical projects, that cannot be solved with PLAXIS 2D.

Complex modelling made easy

Finite element modelling in full 3D has never been easier with a range of CAD-like drawing tools and extrude, intersect, combine and array operations. It’s almost like sculpting.


Plaxis 3D Showreel: Dams & Embankments


6 Reasons to choose Plaxis



The result of calculations and simulations is reliable and reproducible. PLAXIS is the industry standard for geotechnical design, that is why many challenging projects have been realised with PLAXIS.

Advanced Soil Models

Many advanced soil models are pre-installed in order to represent e.g. non-linear, stress and time-dependent behaviour of soil and rock masses. You can also add your own (user defined) soil models.

User Friendly

The self-explanatory, easy to use software interface allows a smooth workflow and eases the use for both beginners as well as experts in the field of geotechnical finite element modelling.

Customer Support and Services

Our Customer Support and Services teams consisting of geotechnical experts, embodies our commitment to you. They take responsibility, care about your problem and will always come with a solution.

Cost effective

The software pays for itself before the end of your first project. Every subsequent project delivers additional ROI.


The ratio of the useful work performed to the total time expended is maximal.



June 10th, 2017

CESAR-LCPC: FEA Software for Civil, Tunnel and Geotechnical Engineering

CESAR-LCPC is a Finite Element software dedicated to stability and deformation analysis. Its modern graphical user interface ensures an intuitive and efficient workflow for 2D as well as 3D modelling. Its scientific background and up-to-date numerical algorithms bring added value to engineers for a better analysis of a large scope of projects in Civil Engineering.



CESAR 2D or 3D is an easy-to-use program for various geotechnical projects.

Major contractors and consultants in civil engineering chose CESAR-LCPC for its unique capabilities to analyse the staged construction of geotechnical structures, to capture the soil-structure interaction and to accurately predict soil stability and settlements.

The user-friendly interface guides the user throughout the specification of the construction stages. Complex geotechnical phenomena can thus be solved with CESAR-LCPC: non-linear soil behaviour, soil-structure interaction, hydraulic conditions, dynamics.


CESARv-LCPC v6 – 3D Embankment works and stability analysis



CESAR-LCPC has been used in many important tunnel projects (Groene Hart tunnel, Subway of Cairo, Channel tunnel…).

It is renowned for its capabilities to model projects from simple geometries (plane strain or axisymmetric analysis) to complex 3D intersections with applications of tunnelling methods (cut-and-cover, TBM, NATM…).

CESAR offers a wide and detailed set of features for modelling various aspects of tunnel engineering: construction process, lining setup, long-term effects, hydraulic loads, thermal loads…

The convergence-confinement method is proposed in a parametric and didactic way through a specific tool in C-TUNNEL, software dedicated for “draft” projects of tunnels.


CESAR-LCPC version 6 – Tubes Intersection


As a classic finite element program, CESAR is equipped with standard features for structural analysis: beams and shell elements, springs and other links, various types of loads, static and dynamic analysis algorithms…

CESAR proposes several constitutive models dedicated to the modelling of concrete (parabolic criterion, Willam-Warnke…) or masonry (homogenization, …).

More CESAR is fitted to analyse the concrete behaviour in service or ultimate conditions. Specific modules, named TEXO & MEXO, have also been developed to enable modelling of the early age concrete behaviour. TEXO serves to compute both the temperature and degree of hydration fields, used to express the material’s state of hardening. These results are then input in the MEXO module in order to determine the displacement and stress fields, in the aim of predicting the risk of cracking at early age.