TSLOPE has a pedigree that started with the suite of geotechnical software developed by Dr Robert Pyke and his team in Berkeley, California. This included software for conventional limit equilibrium slope stability analyses.

In 1989 Dr Pyke developed a three dimensional limit equilibrium analysis program (TSLOPE3) for soil and rock slopes, partly in response  to a need for realistic stability analyses of land fills in Southern California.

TAGAsoft has combined the 2D and 3D programs into the new version of TSLOPE.
This has involved a number of significant enhancements:
- user can work in 2D (section mode) or 3D
- tools for creating simple 3D models from 2D section data
- automatic creation of arbitrary 2D sections from a 3D model
- Spencer’s method in 3D with rapid convergence based on force and moment equilibrium
- slope reinforcement can be modelled
- driving water pressures applied
- rock wedges can be added to a 3D project, with analysis as rigid body or 3D columns
- arbitrary 3D failure surfaces can be defined, with analysis in 2D or 3D
- failure surfaces can be limited by layer boundaries
- search for critical failure surfaces in 2D and 3D
- back calculations for all slope cases, to show range of strengths required for limit equilibrium
- calculation of local factors of safety using Ordinary Method, to indicate areas where progressive failure might initiate
- easy file transfer (dxf, SLOPE/W, AGS)

TSLOPE is essential software for design of slopes in soil and rock. It has been designed as a general purpose program for use with:
- slopes with any one of the following: complex geology, variable topography, 3D effects associated with excavation
- land fill design
- open pit mine design

TSLOPE allows users to carry out all types of limit equilibrium slope stability analyses in the one program. The ability to carry out analyses in either 2D or 3D in the same program is a major advance in slope stability software.

For details of the theoretical background to TSLOPE click here: Theoretical Background.

For verification examples and case studies click here: TSLOPE Examples.

For detailed program documentation please click here: User Documentation