A probabilistic slope stability analysis has been adapted for use on a microcomputer. The analysis uses the Janbu method of slices with geological input provided in the form of the Hoek-Brown rock mass strength criteria. A Monte Carlo simulation allows the results of this analysis to be presented as a probability that the factor of safety for the slope will fall below a critical level. The demonstration program is described for a slope in a Carboniferous limestone quarry at Chipping Sodbury.

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