# Geotechnical analysis, from slope to tunnel

Slope stability, foundation design, retaining walls, tunnel linings and pavements — numerical rigor for critical infrastructure, from 2D limit analysis to 3D FEM.

Canonical page: https://www.ramcadds.com/solutions/infrastructure-geotechnical

## Which product does what

Numerical engines for the hard problems, task programs for the everyday ones, pavement and marine tools alongside.

### Numerical analysis engines

- **PLAXIS 2D** — 2D finite element analysis for deformation, stability and groundwater flow — excavations, embankments, tunnels, consolidation.  
  https://www.ramcadds.com/products/plaxis-2d
- **PLAXIS 3D** — Full 3D finite element analysis for soil-structure interaction — pile groups, deep excavations, complex geometry.  
  https://www.ramcadds.com/products/plaxis-3d
- **OPTUM G2** — 2D limit analysis with rigorous upper and lower bounds — slope stability and bearing capacity.  
  https://www.ramcadds.com/products/optum-g2
- **OPTUM G3** — 3D limit analysis and FEA — stability, deformation and consolidation for complex foundations and slopes.  
  https://www.ramcadds.com/products/optum-g3
- **CESAR LCPC** — General-purpose FEA for tunnelling and staged construction — coupling mechanics, groundwater flow, heat and dynamics.  
  https://www.ramcadds.com/products/cesar-lcpc

### Task-based design programs

- **GEO5** — Task-based programs for retaining walls, foundations, slopes and settlement — submittal-grade reports to your code.  
  https://www.ramcadds.com/products/geo5
- **C-TUNNEL** — Tunnel lining pre-design by convergence-confinement — exports to CESAR 2D for detailed analysis.  
  https://www.ramcadds.com/products/c-tunnel

### Pavement and marine

- **ALIZE LCPC** — Mechanistic-empirical pavement design — fatigue and rutting checks per the French LCPC method.  
  https://www.ramcadds.com/products/alize-lcpc
- **cgFLOAT** — Dynamic analysis of floating marinas, breakwaters and pontoon bridges — wave-induced motions and mooring loads.  
  https://www.ramcadds.com/products/cgfloat
- **cgWindWaves** — Wind-generated wave computation — significant height, period and spectra for coastal design.  
  https://www.ramcadds.com/products/cgwindwaves

## Where it is used

### Slope Stability & Excavation Analysis

Factors of safety for slopes, embankments and staged excavations — limit equilibrium, strength reduction FEM and rigorous bound methods.

### Tunneling & Underground Construction

Sequential excavation, lining installation and ground-support interaction with time-dependent soil behavior and pore pressure dissipation.

Product: https://www.ramcadds.com/products/plaxis

### Geotechnical Monitoring & Back-Analysis

Field monitoring data integrated with numerical models for parameter back-analysis on active construction sites.

### Pavement & Marine Infrastructure

Flexible and rigid pavements with multi-layer analysis, plus floating structure stability and wind-generated wave loads for marine projects.

## Talk to us

Ready to put numerical rigor behind your next project?

Contact: https://www.ramcadds.com/contact
Full reference: https://www.ramcadds.com/llms-full.txt