- 3D Geotechnical Finite Element Analysis

RS3 is a 3D finite element analysis program for modelling slopes, tunnel and support design, surface and underground excavations, foundation design, embankments, consolidation, groundwater seepage and more. With fully-automated Shear Strength Reduction, you can use RS3 for advanced slope stability analysis on the most complex 3D models.

RS3 is designed for 3D analysis of geotechnical structures for civil and mining applications. Applicable for both rock and soil, RS3 is a general-purpose finite element analysis program for underground excavations, tunnel and support design, surface excavation, foundation design, embankments, consolidation, groundwater seepage and more. The newest features in RS3 include dynamic analysis and automatic shear strength reduction.

Three-dimensional model geometry is built with CAD tools or by importing 3D files such as DXFs.

RS3 offers complete flexibility for staging of excavations, support installation, loading and all other modeling aspects. Models with up to several hundred different stages can be analyzed with RS3.

After the analysis is computed, RS3 offers numerous options for viewing and displaying results in 2D and 3D (e.g. displacements, pore water pressure, stresses, strains, flow vectors). You can contour results on excavation surfaces or user-defined viewing planes, plot results along any lines, plot detailed support forces and displacements, and plot differential results between stages. Results and images can be exported and customized for presentations and reports.


  • Create 3D models with CAD tools
  • Multiple excavations
  • Interactive geometry entry
  • Vertex/object snapping
  • One-click material assignment
  • Import 3D .dxf, .dwg, .obj, .stl, .step, .iges, .tin, .asc, .xyz files
  • Import from Examine
  • Export planar section to RS2, Slide2
  • Right-click editing shortcuts
  • Interactive sidebar
  • Interactive staging timeline
  • Tunnel profile tool
  • Define soil profile with boreholes


  • 3D tetrahedral mesh
  • 4-noded or 10-noded elements
  • One-click mesh generation
  • Graded meshing
  • Uniform meshing
  • Check/define mesh quality
  • Define mesh refinement region


  • Soil or rock
  • Elastic or plastic
  • Multiple materials
  • Mohr-Coulomb, Hoek-Brown, Drucker-Prager, Generalized Hoek-Brown, Cam-Clay, Modified Cam-Clay, Discrete Functions, Mohr-Coulomb with Cap material models
  • Softening hardening model
  • Staged material properties
  • Datum-dependent properties
  • Import from RocData
  • Linear isotropic, transversely isotropic, orthotropic, Duncan-Chang Hyperbolic, non-linear isotropic, custom
  • User-defined material models library, including ChSoil, CySoil, Harding Soil and Hardening Soil with Small Strain Stiffness


  • 3D finite element seepage analysis
  • Steady state or transient
  • Staged groundwater
  • Material permeability functions
  • Discharge sections
  • Piezometric lines
  • Pore pressure point set
  • Coupled/uncoupled analysis
  • Add water surface by location 
  • Add pore water pressure point set by location


  • Bolts
  • Liners
  • Beams
  • Forepoles/piles
  • Staged support installation
  • Bolt types – end anchored, fully bonded, cable bolts, Swellex, split-set, tiebacks
  • Composite liners with interface elements
  • Elastic or plastic
  • Peak/residual strength


  • Parallel 64-bit processing
  • Fully optimized
  • Direct or iterative solver
  • Coupled stress/pore pressure using Biot theory

Far-field Stress

  • Constant stress field
  • Gravity stress field
  • Stress field per material

Finite Element Slope Stability

  • Automated FE slope stability using shear strength reduction (SSR) method
  • Define SSR include area
  • Define SSR exclude area
  • Documentation including verification models and tutorials


  • Point load
  • Line load
  • Distributed load
  • Ponded water load
  • Staged loading
  • Springs
  • Seismic loading
  • Dynamic analysis

Data Interpretation

  • 2D/3D view
  • Plot contours on horizontal, vertical or arbitrary planes
  • Plot contours on boundaries
  • View stress, displacement contours
  • Effective stress, pore pressure contours
  • Contour user-defined data
  • Deformation vectors
  • Groundwater discharge vectors
  • Display deformations to userdefined scale
  • Query and graph material, support data
  • Show values directly on model
  • Highlight yielded material and support elements
  • Display isosurfaces
  • Data tips for any object
  • Annotation and dimensioning tool kit
  • Export to Excel
  • Export image files

  • Dams
  • Embankments
  • Excavations
  • Groundwater
  • Mining
  • Retaining Walls
  • Rock Slopes
  • Settlement
  • Soil Slopes
  • Tunnels