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You are reading the online version of the LimitState:GEO manual, which is also available as a pdf.
LimitState:GEO Manual
VERSION 2.0
LimitState Ltd
Introduction and Quickstart
Introduction
General Description
Program Features
LimitState:GEO Terminology
About LimitState
Using Help
System Requirements
Program Limits
Contact Details
Getting Started
Installation and Licensing
Starting LimitState:GEO
Guidance Available in this Manual
Quick Start Tutorial
Introduction
Getting Started
Solving a Problem
Viewing Mechanism Deformation
Viewing Shear and Normal Stresses
Zooming In and Out
Trying Different Problems and Parameter Sets
The Property Editor
Solving Collapse Problems Driven by Soil Self Weight
Modelling Layered Soils
Conclusion
Wizards
Introduction
Using a New Project Wizard
Theory
Discontinuity Layout Optimization
Introduction
Limit Analysis and Limit Equilibrium
DLO: How Does it Work?
Model components
Material Models
Representation of Water Pressures
Seismic loading
Soil Reinforcement
Limit Analysis: Advantages and Limitations
Introduction
Simplicity
Stress states in yielding and non-yielding zones
Strain compatibility
Non-associativity
Kinematic Constraints
Modelling
Generic principles
Model Definition and Solver
Adequacy Factor and Factors of Safety
Use of Partial Factors
Specific applications
Introduction
Example problems
Modelling slope stability problems
Modelling soil reinforcement
Soil reinforcement predefined types
Modelling seismic loads
Solution Accuracy
Adapting plane strain results to 3D
Troubleshooting
User Guide
Introduction to the User Guide
The Graphical Interface
Introduction
Title Bar
Menu Bar
Toolbars
Materials Explorer
Viewer Pane
Property Editor
Geometry Editor
Output Pane
Status Bar
Calculator
Specifying the Problem Geometry
Terminology
Setting the Units
Starting with an Empty Project
Starting with a DXF Imported Geometry
Construction Lines
Drawing Functions
Selecting Objects
Snapping to Other Objects
Modifying the Geometry
Undo/Redo
Editing Geometry Object Properties
Setting the Analysis Mode
Short and Long term stability
Translational and rotational solution mode
Setting Material Properties
Material Types
Assigning a Material to a Solid or a Boundary
Standard Mohr-Coulomb Material
Derived Mohr-Coulomb Material
Cutoff Material
Rigid
Setting Soil/Material Unit Weight
Engineered Element
Creating and Deleting User Defined Materials
Exporting and Importing Materials
Setting Boundary Conditions
Setting Applied Loads
Specifying Boundary Loads
Specifying Self Weight Loading
Adequacy Factors
Favourable/Unfavourable Setting
Setting the Water Regime
Introduction
Drawing the Water Table
Clearing the Water Table
Enabling the Water Table
Use of an
Value
Setting seismic parameters
Analysis
Overview
The Solver
Analysis Settings
Analysis Results
Post-Analysis Functions
Animation
Slip-lines
Pressure distributions
Report Output
Viewing the Report Output
Customizing the Header or Footer
Opening and Saving Projects
Opening and Saving Projects
Auto-recovery files
Scenario Manager and Partial Factors
Introduction
Specification of Partial Factors for a Single Scenario
Specification of Long and Short Term Analysis Mode
Specifiying Multiple Scenarios
Exporting and Importing Scenarios
Solving with Multiple Scenarios
Appendices
Verification
Verification tests
Academic papers
Menu and Toolbar Reference
General
Menus
Toolbars
Context Menus
Accessing Example Files
Derivation of Theory
Work done by cohesion by rotation of a log spiral
Benchmark Solutions
Introduction
Simple soil nail in retaining wall (undrained)
Frequently Asked Questions
References
© LimitState Ltd 2009
All rights reserved. No parts of this work may be reproduced in any form without the written permission
of LimitState Ltd.
While every precaution has been taken in the preparation of this document, LimitState Ltd assumes no
responsibility for errors or omissions. LimitState Ltd will not be liable for any loss or damage of any kind,
including, without limitation, indirect or consequential loss (including loss of profits) arising out of the
use of or inability to use this document and/or accompanying software for any reason.
This document is provided as a guide to the use of the software. It is not a substitute for standard references or engineering knowledge. The user is assumed to be conversant with standard engineering terminology and codes of practice. It is the responsibility of the user to validate the software for the applications for which it is to be used.